Restorative Dentistry & Endodontics

Research Articles

In-office dental bleaching with violet light emitting diode: bleaching efficacy and pulpal temperature rise: Brunna Katyuscia de Almeida Guanaes, Talyta Neves Duarte, Gisele Maria Correr, Marina da Rosa Kaizer, Carla Castiglia Gonzaga; Restor Dent Endod 2022;47(1):e7. Published online February 3, 2022; DOI: https://doi.org/10.5395/rde.2022.47.e7

Objectives

This study evaluated the bleaching efficacy of different in-office protocols associated with violet light emitting diode (V-LED), and measured the pulpal temperature rise caused by V-LED with or without gel application.

Materials and Methods

Bovine incisors were distributed in 4 groups (n = 10): VL – V-LED; HP – 35% hydrogen peroxide (control); HYB – hybrid protocol, V-LED applied without gel for 10 irradiation cycles followed by V-LED applied with gel for another 10 irradiation cycles; and HPVL – gel and V-LED applied for 20 irradiation cycles. Three bleaching sessions were performed with 7-day intervals. Bleaching efficacy was evaluated with $ΔEab*$ , ΔE₀₀ and ΔWI_D. Data were recorded at baseline, 7, 14, 21 and 70 days. For pulpal temperature rise, thermocouples were placed inside the pulp chamber of human incisors. To determine intrapulpal temperature, the teeth were irradiated with V-LED with or without application of bleaching gel. Color difference data were analyzed by 2-way repeated measures ANOVA and Tukey’s test. Pulpal temperature was analyzed by t-test (α = 5%).

Results

VL exhibited lower color ( $ΔEab*$ and ΔE₀₀) and whiteness changes (ΔWI_D) than the other groups. HPVL presented higher color change values than HYB. HYB and HPVL showed not different ΔWI_D values; and HP showed the highest whiteness changes at all times. There were significant differences comparing ΔT with gel (8.9°C) and without gel application (7.2°C).

Conclusions

HPLV was more efficient than HYB. The 2 protocols with VL showed similar results to control. Gel application combined with VL promoted higher pulpal temperature than to the no gel group.

Citations

Citations to this article as recorded by

Effect of antioxidant on tooth sensitivity after bleaching
Mohamed Nabil, Mostafa Mohamed Hasan, Eman Abd Elghany Shebl
Journal of Esthetic and Restorative Dentistry.2024; 36(3): 429. CrossRef
In-office Bleaching Activated With Violet LED: Effect on Pulpal and Tooth Temperature and Pulp Viability
NR Carlos, RT Basting, KR Kantovitz, ES Bronze-Uhle, PN Lisboa Filho, V Cavalli, RT Basting
Operative Dentistry.2024; 49(3): 262. CrossRef
Low and high hydrogen peroxide concentrations of in-office dental bleaching associated with violet light: an in vitro study
Isabela Souza Vardasca, Michael Willian Favoreto, Mylena de Araujo Regis, Taynara de Souza Carneiro, Emanuel Adriano Hul, Christiane Philippini Ferreira Borges, Alessandra Reis, Alessandro D. Loguercio, Carlos Francci
Clinical Oral Investigations.2024;[Epub] CrossRef
Bleaching efficacy of in-office bleaching with violet light using low-concentration hydrogen peroxide nanoparticulate photocatalyst gel: A randomized controlled trial
Gustavo Garcia Castro, Palena Araújo Pinto, Michael Willian Favoreto, Alessandra Reis, Maria Viviana-Mora, Rita de Cássia Mendonça de Miranda, Andres Felipe Milan Cardenas, Alessandro D. Loguercio, Rudys Rodolfo de Jesus Tavarez
Photodiagnosis and Photodynamic Therapy.2024; 50: 104410. CrossRef
Continuous vs fractionated violet LED light protocols for dental bleaching: Evaluations of color change and temperature of the dental pulp and buccal surface
Mayanna Pacheco Trindade Najar, Luciana Hilel Rangel Barbosa, Natália Russo Carlos, Fabiana Mantovani Gomes França, Cecilia Pedroso Turssi, Waldemir Francisco Vieira-Junior, Roberta Tarkany Basting
Photodiagnosis and Photodynamic Therapy.2023; 42: 103631. CrossRef
Improved esthetic efficacy and reduced cytotoxicity are achieved with a violet LED irradiation of manganese oxide-enriched bleaching gels
Marlon Ferreira Dias, Beatriz Voss Martins, Rafael Antonio de Oliveira Ribeiro, Josimeri Hebling, Carlos Alberto de Souza Costa
Lasers in Medical Science.2022;[Epub] CrossRef

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Comparison of the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium rotary files at body temperature: Mustafa Gündoğar, Gülşah Uslu, Taha Özyürek, Gianluca Plotino; Restor Dent Endod 2020;45(3):e37. Published online June 22, 2020; DOI: https://doi.org/10.5395/rde.2020.45.e37

Abstract PDF PubReader ePub

Objectives

This study aims to compare the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium (NiTi) rotary files at body temperature.

Materials and Methods

In total, 80 VDW.ROTATE (25/0.04), TruNatomy (26/0.04), 2Shape (25/0.04), and HyFlex CM (25/0.04) NiTi rotary files (n = 20 in each group) were subjected to static cyclic fatigue testing at body temperature (37°C) in stainless-steel artificial canals prepared according to the size and taper of the instruments until fracture occurred. The number of cycles to fracture (NCF) was calculated, and the lengths of the fractured fragments were measured. The data were statistically analyzed using a 1-way analysis of variance and post hoc Tamhane tests at the 5% significance level (p < 0.05).

Results

There were significant differences in the cyclic fatigue resistance among the groups (p < 0.05), with the highest to lowest NCF values of the files as follows: VDW.ROTATE, HyFlex CM, 2Shape, and TruNatomy. There was no significant difference in the lengths of the fractured fragments among the groups. The scanning electron microscope images of the files revealed typical characteristics of fracture due to cyclic fatigue.

Conclusions

The VDW.ROTATE files had the highest cyclic fatigue resistance, and the TruNatomy and 2Shape files had the lowest cyclic fatigue resistance in artificial canals at body temperature.

Citations

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Comparative Evaluation of Efficiency of Different Endodontic File Systems; Protaper Universal, MTWO, Protaper Next, Trunatomy, I-Race in Terms of Remaining Dentin Thickness: An In vitro CBCT Analysis
Anju Retnakaran, Faisal M. A. Gaffoor, Rethi Gopakumar, C Sabari Girish, N. C Sajeena, N Gokul Krishna
Journal of Pharmacy and Bioallied Sciences.2024; 16(Suppl 2): S1409. CrossRef
Analysis of Cutting Capacity, Surface Finishing, and Mechanical Properties of NiTi Instruments 25/.04: ROTATE and LOGIC 2
Ridalton Carlos de Morais, Juliana Delatorre Bronzato, Adriana de-Jesus-Soares, Marcos Frozoni, Victor Talarico Leal Vieira
Journal of Endodontics.2024; 50(7): 982. CrossRef
Effect of Temperature on the Cyclic Fatigue Resistance and Phase Transformation Behavior of Three Different NiTi Endodontic Instruments
Esra İrem Yi̇ği̇t, İrem Çetinkaya
Cureus.2024;[Epub] CrossRef
In Vitro Evaluation of the Dynamic Cyclic Fatigue Resistance of a New TruNatomy Glider File after Different Cycles of Use
Lorena Ferreira Rego, Juliana Delatorre Bronzato, Alana Pinto Carôso Souza, Adriana de-Jesus-Soares, Marcos Frozoni
Journal of Endodontics.2024; 50(5): 619. CrossRef
Effect of Sodium Hypochlorite and Hypochlorous Acid Solutions on the Cyclic Fatigue Resistance of Waveonegold, K3XF and Hyflex-EDM: A Study of Metallurgical Properties
D. A. Bozkurt, M. Akman, H. B. Karadag, Z. Ovalioglu, Ö.Küçük Keleş
Strength of Materials.2023; 55(1): 191. CrossRef
Effectiveness of conservative instrumentation in root canal disinfection
Sıla Nur Usta, Carmen Solana, Matilde Ruiz-Linares, Pilar Baca, Carmen María Ferrer-Luque, Monica Cabeo, Maria Teresa Arias-Moliz
Clinical Oral Investigations.2023; 27(6): 3181. CrossRef
Cyclic fatigue resistance of different nickel‐titanium instruments in single and double curvature at room and body temperatures: A laboratory study
Giusy Rita Maria La Rosa, Maria Laura Leotta, Francesco Saverio Canova, Virginia Rosy Romeo, Gabriele Cervino, Luigi Generali, Eugenio Pedullà
Australian Endodontic Journal.2023; 49(3): 592. CrossRef
Influence of NiTi Wire Diameter on Cyclic and Torsional Fatigue Resistance of Different Heat-Treated Endodontic Instruments
Eugenio Pedullà, Francesco Saverio Canova, Giusy Rita Maria La Rosa, Alfred Naaman, Franck Diemer, Luigi Generali, Walid Nehme
Materials.2022; 15(19): 6568. CrossRef
Impact of Different Access Cavity Designs and Ni–Ti Files on the Elimination of Enterococcus faecalis from the Root Canal System: An In Vitro Study
Gizem Andac, Atakan Kalender, Buket Baddal, Fatma Basmaci
Applied Sciences.2022; 12(4): 2049. CrossRef
Comparison of canal transportations and centering ability of rotary instrument systems with different heat-treated NiTi alloys: An in vitro CBCT study
Mukadder İnci BAŞER KOLCU, Gülter Devrim KAKİ
Turkish Journal of Health Science and Life.2022; 5(2): 81. CrossRef
Comparative evaluation of cutting efficiency, cyclic fatigue, corrosion resistance, and autoclave cycle effects of three different file systems: An in-vitro micro-CT and metallurgy analysis
KondasV Venkatesh, EldhoJ Varghese
Journal of International Oral Health.2022; 14(6): 551. CrossRef
Influence of different heat treatments and temperatures on the cyclic fatigue resistance of endodontic instruments with the same design
Walid Nehme, Alfred Naaman, Franck Diemer, Maria Laura Leotta, Giusy Rita Maria La Rosa, Eugenio Pedullà
Clinical Oral Investigations.2022; 27(4): 1793. CrossRef
Analysis of cyclic fatigue resistance of ProTaper Universal and ProTaper Next rotary instruments
Nenad Stosic, Jelena Popovic, Marija Andjelkovic-Apostolovic, Aleksandar Mitic, Radomir Barac, Marija Nikolic, Marko Igic
Stomatoloski glasnik Srbije.2022; 69(3): 109. CrossRef
Influência do hipoclorito de sódio na resistência à fadiga cíclica em instrumentos rotatórios endodônticos de memória controlada de NiTi: uma avaliação experimental
Marcelo Leite MESQUITA, Carlos Eduardo da Silveira BUENO, Alexandre Sigrist DE MARTIN, Rina Andrea PELEGRINE, Carlos Eduardo FONTANA
Revista de Odontologia da UNESP.2022;[Epub] CrossRef
Comparison of Cyclic Fatigue Resistance of Novel TruNatomy Files with Conventional Endodontic Files: An In Vitro SEM Study
Sabari Murugesan, Vinoth Kumar, Bharath Naga Reddy, Syed Nahid Basheer, Rajeswary Kumar, Saravanan Selvaraj
The Journal of Contemporary Dental Practice.2022; 22(11): 1243. CrossRef
Cyclic Fatigue of TruNatomy Nickel-Titanium Rotary Instrument in Single and Double Curvature Canals: A Comparative Study
Sarah A Rashid, Hikmet A AI-Gharrawi
World Journal of Dentistry.2021; 12(1): 28. CrossRef

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Effect of hydrofluoric acid-based etchant at an elevated temperature on the bond strength and surface topography of Y-TZP ceramics: Mi-Kyung Yu, Myung-Jin Lim, Noo-Ri Na, Kwang-Won Lee; Restor Dent Endod 2020;45(1):e6. Published online December 3, 2019; DOI: https://doi.org/10.5395/rde.2020.45.e6

Abstract PDF PubReader ePub

Objectives

This study investigated the effects of a hydrofluoric acid (HA; solution of hydrogen fluoride [HF] in water)-based smart etching (SE) solution at an elevated temperature on yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramics in terms of bond strength and morphological changes.

Materials and Methods

Eighty sintered Y-TZP specimens were prepared for shear bond strength (SBS) testing. The bonding surface of the Y-TZP specimens was treated with 37% phosphoric acid etching at 20°C–25°C, 4% HA etching at 20°C–25°C, or HA-based SE at 70°C–80°C. In all groups, zirconia primers were applied to the bonding surface of Y-TZP. For each group, 2 types of resin cement (with or without methacryloyloxydecyl dihydrogen phosphate [MDP]) were used. SBS testing was performed. Topographic changes of the etched Y-TZP surface were analyzed using scanning electron microscopy and atomic force microscopy. The results were analyzed and compared using 2-way analysis of variance.

Results

Regardless of the type of resin cement, the highest bond strength was measured in the SE group, with significant differences compared to the other groups (p < 0.05). In all groups, MDP-containing resin cement yielded significantly higher bond strength values than MDP-free resin cement (p < 0.05). It was also shown that the Y-TZP surface was etched by the SE solution, causing a large change in the surface topography.

Conclusions

Bond strength significantly improved when a heated HA-based SE solution was applied to the Y-TZP surface, and the etched Y-TZP surface was more irregular and had higher surface roughness.

Citations

Citations to this article as recorded by

Evaluation of Different Surface Roughening Techniques on Clear Aligner Attachments Bonded to Monolithic Zirconia: In Vitro Study
Nehal F Albelasy, Ahmad M Hafez, Abdullah S Alhunayni
The Journal of Contemporary Dental Practice.2025; 25(12): 1104. CrossRef
Effect of Acid Surface Treatments on the Shear Bond Strength of Metal Bracket to Zirconia Ceramics
Punchanit Wongrachit, Bancha Samruajbenjakun, Boonlert Kukiattrakoon, Tanapat Jearanai, Supontep Teerakanok, Pannapat Chanmanee
Ceramics.2024; 7(2): 689. CrossRef
Exploring Zirconia Adhesion: Pre and Postsintering Physical Surface Treatment, Chemical Treatment, and Cement Interactions
Flávia Gonçalves, Mirko Dennys Ayala-Perez, Francisco Carlos dos Santos Reis, Walter Gomes Miranda-Júnior, Letícia Cristina Cidreira Boaro, Heng Bo Jiang
BioMed Research International.2024;[Epub] CrossRef
Evaluation of zirconia surfaces and shear bond strength after acid–etching with ultrasonic vibration
Xiaozhen Zhang, Hepeng Nie, Jiaxin Lv, Shanshan Yuan, Juan Wang, Kunzhan Cai, Jin Wu, Qingqing Zhang, Chunbo Tang
Materials Research Express.2024; 11(2): 025401. CrossRef
Effects of Surface-Etching Systems on the Shear Bond Strength of Dual-Polymerized Resin Cement and Zirconia
Sang-Hyun Kim, Kyung Chul Oh, Hong-Seok Moon
Materials.2024; 17(13): 3096. CrossRef
Zirconia bond strength durability following artificial aging: A systematic review and meta-analysis of in vitro studies
Athanasios E. Rigos, Katia Sarafidou, Eleana Kontonasaki
Japanese Dental Science Review.2023; 59: 138. CrossRef
Y-TZP Physicochemical Properties Conditioned with ZrO2 and SiO2 Nanofilms and Bond Strength to Dual Resin Cement
Ricardo Faria Ribeiro, Danilo Flamini Oliveira, Camila Bussola Tovani, Ana Paula Ramos, Ana Flavia Sanches Borges, Adriana Claudia Lapria Faria, Rossana Pereira de Almeida, Renata Cristina Silveira Rodrigues
Materials.2022; 15(22): 7905. CrossRef
Effect of the nanofilm-coated zirconia ceramic on resin cement bond strength
Viviane Maria Gonçalves de Figueiredo, Alecsandro de Moura Silva, Marcos Massi, Argemiro Soares da Silva Sobrinho, José Renato Cavalcanti de Queiroz, João Paulo Barros Machado, Renata Falchete do Prado, Lafayette Nogueira Junior
Journal of Dental Research, Dental Clinics, Dental Prospects.2022; 16(3): 170. CrossRef
Change of phase transformation and bond strength of Y-TZP with various hydrofluoric acid etching
Mi-Kyung Yu, Eun-Jin Oh, Myung-Jin Lim, Kwang-Won Lee
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Changes in Bond Strength and Topography for Y-TZP Etched with Hydrofluoric Acid Depending on Concentration and Temperature Conditions
Hyo-Eun Kim, Myung-Jin Lim, Mi-Kyung Yu, Kwang-Won Lee
Medicina.2020; 56(11): 568. CrossRef
Do different sintering conditions influence bond strength between the resin cements and a currently used esthetic zirconia?
Fatma Ayse Sanal, Hamiyet Kilinc
Journal of Adhesion Science and Technology.2020; 34(16): 1809. CrossRef

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The effect of preheating resin composites on surface hardness: a systematic review and meta-analysis: Ali A. Elkaffas, Radwa I. Eltoukhy, Salwa A. Elnegoly, Salah H. Mahmoud; Restor Dent Endod 2019;44(4):e41. Published online October 29, 2019; DOI: https://doi.org/10.5395/rde.2019.44.e41

Abstract PDF PubReader ePub

Objectives

This paper presents a systematic review and meta-analysis of the effect of preheating on the hardness of nanofilled, nanoceramic, nanohybrid, and microhybrid resin composites.

Materials and Methods

An electronic search of papers on MEDLINE/PubMed, ScienceDirect, and EBSCOhost was performed. Only in vitro studies were included. Non-English studies, case reports, clinical trials, and review articles were excluded. A meta-analysis of the reviewed studies was conducted to quantify differences in the microhardness of the Z250 microhybrid resin composite using the Comprehensive Meta-Analysis software.

Results

Only 13 studies met the inclusion criteria for this systematic review. The meta-analysis showed that there were significant differences between the non-preheated and preheated modes for both the top and bottom surfaces of the specimens (p < 0.05). The microhardness of the Z250 resin composite on the top surface in the preheated mode (78.1 ± 2.9) was higher than in the non-preheated mode (67.4 ± 4.0; p < 0.001). Moreover, the microhardness of the Z250 resin composite on the bottom surface in the preheated mode (71.8 ± 3.8) was higher than in the non-preheated mode (57.5 ± 5.7, p < 0.001).

Conclusions

Although the results reported in the reviewed studies showed great variability, sufficient scientific evidence was found to support the hypothesis that preheating can improve the hardness of resin composites.

Citations

Citations to this article as recorded by

Influence of preheating and water storage on the color, whiteness, and translucency of modern resin‐based composites
Corina Mirela Prodan, Cristina Gasparik, Javier Ruiz‐López, Diana Dudea
Journal of Esthetic and Restorative Dentistry.2025; 37(2): 533. CrossRef
Effects of pre-heating on physical–mechanical–chemical properties of contemporary resin composites
Thamires Bueno, Nivien Masoud, Anna Akkus, Italo Silva, Karen McPherson, Adilson Yoshio Furuse, Fabio Rizzante
Odontology.2025; 113(1): 135. CrossRef
Clinical performance of different bulk‐fill composite resin systems in classIIcavities: A 2‐year randomized clinical trial
Badria Goda, Kareem Hamdi, Radwa I. Eltoukhy, Ashraf I. Ali, Salah Hasab Mahmoud
Journal of Esthetic and Restorative Dentistry.2024; 36(8): 1122. CrossRef
Comparative evaluation of microleakage in Class II cavities restored with snowplow technique using flowable or preheated packable bulk-fill composite resin as gingival increment by dye extraction method: An in vitro study
M. A. Ranjini, V. Geetha, B. Vedavathi, H. K. Ashok, Akshata J. Airsang, S. Swathi
Journal of Conservative Dentistry and Endodontics.2024; 27(11): 1158. CrossRef
Influence of Light‐Curing Time and Increment Thickness on the Properties of Bulk Fill Composite Resins With Distinct Application Systems
Carlos Rocha Gomes Torres, Taiana Paola Prado, Daniele Mara da Silva Ávila, Cesar Rogério Pucci, Alessandra Bühler Borges, Heng Bo Jiang
International Journal of Dentistry.2024;[Epub] CrossRef
Last Generation Bis-GMA Free Composite For Indirect Posterior Restorations: A Case Report
M. Delgado
Endodontics Today.2024; 21(4): 305. CrossRef
The clinical performance of dental resin composite repeatedly preheated: A randomized controlled clinical trial
Mahmoud Elkady, Safaa Abdelhakim, Mona Riad
Journal of Dentistry.2024; 144: 104940. CrossRef
Preheating effect on microhardness and depth of cure of three bulk-fill composite resins: An in vitro study
Aashna Sunil Sahetia, Divya Rupesh Jain, Padmaja Panditrao Sirsat, Meenal N. Gulve, Swapnil J. Kolhe, Surbhi P. Patel
Endodontology.2024;[Epub] CrossRef
Evaluation of Shear Bond Strength of Lithium Disilicate Veneers Using Pre-heated Resin Composite With Two Conventional Resin Cements: An In Vitro Study
Ghalia Akyle, Hassan Achour
Cureus.2024;[Epub] CrossRef
Effect of Glass Fiber Reinforcement on Marginal Microleakage in Class II Composite Restorations: An In Vitro Pilot Study
Csaba Dudás, Emánuel Kardos, Melinda Székely, Lea Ádám, Zsuzsanna Bardocz-Veres, Evelyn Szőllősi, Kinga Mária Jánosi, Bernadette Kerekes-Máthé
Dentistry Journal.2024; 12(12): 410. CrossRef
Effect of preheating on the physicochemical properties and bond strength of composite resins utilized as dental cements: An in vitro study
Carolina Carramilo Raposo, Luanna Marinho Sereno Nery, Edilausson Moreno Carvalho, Paulo Vitor Campos Ferreira, Diego Machado Ardenghi, José Bauer, Darlon Martins Lima
The Journal of Prosthetic Dentistry.2023; 129(1): 229.e1. CrossRef
Examining the Impact of Preheating on the Fracture Toughness and Microhardness of Composite Resin: A Systematic Review
Jay Bhopatkar, Anuja Ikhar, Manoj Chandak, Aditya Patel, Paridhi Agrawal
Cureus.2023;[Epub] CrossRef
In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins
Jhonn Luis Bernaldo-Faustino, Julissa Amparo Dulanto-Vargas, Kilder Maynor Carranza-Samanez, Carlos A. Munoz-Viveros
International Journal of Dentistry.2023; 2023: 1. CrossRef
Efecto del precalentamiento en la microdureza superficial de seis resinas compuestas
Gloria Cristina Moreno Abello, Kavhas Castro, Paula Alejandra Ovalle Barrera, Paula Bernal, Laura Catalina Lara Hernández
Universitas Odontologica.2023;[Epub] CrossRef
Wear and Color Stability of Preheated Bulk-fill and Conventional Resin Composites
AA Abdulmajeed, AA Suliman, BJ Selivany, A Altitinchi, TA Sulaiman
Operative Dentistry.2022; 47(5): 585. CrossRef
Comparison of Mechanical Properties of a Self-Adhesive Composite Cement and a Heated Composite Material
Anastazja Skapska, Zenon Komorek, Mariusz Cierech, Elzbieta Mierzwinska-Nastalska
Polymers.2022; 14(13): 2686. CrossRef
Effects of ionizing radiation on surface properties of current restorative dental materials
Débora Michelle Gonçalves de Amorim, Aretha Heitor Veríssimo, Anne Kaline Claudino Ribeiro, Rodrigo Othávio de Assunção e Souza, Isauremi Vieira de Assunção, Marilia Regalado Galvão Rabelo Caldas, Boniek Castillo Dutra Borges
Journal of Materials Science: Materials in Medicine.2021;[Epub] CrossRef
Quality assessment tools used in systematic reviews of in vitro studies: A systematic review
Linh Tran, Dao Ngoc Hien Tam, Abdelrahman Elshafay, Thao Dang, Kenji Hirayama, Nguyen Tien Huy
BMC Medical Research Methodology.2021;[Epub] CrossRef
Preheated composite: Innovative approach for aesthetic restoration
Reema N Asani, Vandana J Gade, Kalyani G Umale, Rachana Gawande, Rohit R Amburle, Raksha R Kusumbe, Purva P Kale, Priya R Kosare
Archives of Dental Research.2021; 11(2): 103. CrossRef

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Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation: Ra'fat I. Farah; Restor Dent Endod 2019;44(1):e3. Published online December 24, 2018; DOI: https://doi.org/10.5395/rde.2019.44.e3

Abstract PDF PubReader ePub

Objectives

It was the aim of this study to evaluate the effect of cooling water temperature on the temperature changes in the pulp chamber and at the handpiece head during high-speed tooth preparation using an electric handpiece.

Materials and Methods

Twenty-eight intact human molars received a standardized occlusal preparation for 60 seconds using a diamond bur in an electric handpiece, and one of four treatments were applied that varied in the temperature of cooling water applied (control, with no cooling water, 10°C, 23°C, and 35°C). The temperature changes in the pulp chamber and at the handpiece head were recorded using K-type thermocouples connected to a digital thermometer.

Results

The average temperature changes within the pulp chamber and at the handpiece head during preparation increased substantially when no cooling water was applied (6.8°C and 11.0°C, respectively), but decreased significantly when cooling water was added. The most substantial drop in temperature occurred with 10°C water (−16.3°C and −10.2ºC), but reductions were also seen at 23°C (−8.6°C and −4.9°C). With 35°C cooling water, temperatures increased slightly, but still remained lower than the no cooling water group (1.6°C and 6.7ºC).

Conclusions

The temperature changes in the pulp chamber and at the handpiece head were above harmful thresholds when tooth preparation was performed without cooling water. However, cooling water of all temperatures prevented harmful critical temperature changes even though water at 35°C raised temperatures slightly above baseline.

Citations

Citations to this article as recorded by

The Effect of Water Coolant and Bur Type on Pulp Temperature When Removing Tooth Structure and Restorative Dental Materials
C Mafrici, M Kingston, R Grice, PV Abbott
Operative Dentistry.2024; 49(1): 91. CrossRef
A Finite Element Method Study on a Simulation of the Thermal Behaviour of Four Methods for the Restoration of Class II Cavities
Adela Nicoleta Staicu, Mihaela Jana Țuculină, Cristian Niky Cumpătă, Ana Maria Rîcă, Maria Cristina Beznă, Dragoș Laurențiu Popa, Alexandru Dan Popescu, Oana Andreea Diaconu
Journal of Functional Biomaterials.2024; 15(4): 86. CrossRef
In vitro comparison of guide planes for removable partial dentures prepared with CAD-CAM-assisted templates, guiding rod templates, and freehand
Ni Cheng, Hai Yu, Wenxi Shan, Jiang Wu
Journal of Dentistry.2024; 149: 105322. CrossRef
Comparison of antimicrobial efficacy of different disinfectants on the biofilm formation in dental unit water systems using dip slide and conventional methods: A pilot study
Pelin Özmen, Hilal Erdoğan, Aslıhan Güngördü, Bülent Pişkin, Funda Kont Çobankara, Serdar Sütcü, Nesrin Şahin
Microscopy Research and Technique.2024; 87(6): 1241. CrossRef
Analysis of the Pulpal Blood Flow Microdynamics during Prosthetic Tooth Preparation Using Diamond Burs with Different Degrees of Wear
Edmond Ciora, Mariana Miron, Diana Lungeanu, Andreea Igna, Anca Jivanescu
Dentistry Journal.2024; 12(6): 178. CrossRef
Bacterial contamination potential of personal protective equipment itself in dental aerosol-producing treatments
Madline Priska Gund, Jusef Naim, Stefan Rupf, Barbara Gärtner, Matthias Hannig
Odontology.2024; 112(2): 309. CrossRef
Patient satisfaction before and after occlusal adjustment using a visual analog scale
Ha-Rim Lee, Sun-Haeng Lee, Gyeong-Je Lee
Oral Biology Research.2023; 47(1): 8. CrossRef
Heat generated during dental treatments affecting intrapulpal temperature: a review
Xin Er Lau, Xiaoyun Liu, Helene Chua, Wendy Jingwen Wang, Maykon Dias, Joanne Jung Eun Choi
Clinical Oral Investigations.2023; 27(5): 2277. CrossRef
“The effect of diode laser 940 nm and 445 nm on the rise in temperature of a pulp simulating material: in vitro study”
Basant Bahaaeldin, Ola Ibrahim Fahmy, Amira Zoghaby, Rene Franzen
Lasers in Dental Science.2023; 7(3): 147. CrossRef
Evaluation of the Pulp Chamber Temperature during Tooth Veneer Preparation Using Burs with Different Degrees of Wear—A Preliminary In Vitro Study
Edmond Ciora, Mariana Miron, Daliana Bojoga, Diana Lungeanu, Anca Jivanescu
Dentistry Journal.2023; 11(8): 197. CrossRef
Effect of spray air settings of speed-increasing contra-angle handpieces on intrapulpal temperatures, drilling times, and coolant spray pattern
Edina Lempel, József Szalma
Clinical Oral Investigations.2022; 26(1): 523. CrossRef
Preparing guiding planes for removable partial dentures: an in vitro comparison between assisted CAD-CAM template procedure and freehand preparation
Hefei Bai, Hongqiang Ye, Hu Chen, Yong Wang, Yongsheng Zhou, Yuchun Sun
Journal of Dentistry.2022; 123: 104166. CrossRef
Yeni Tip Koronavirüs (COVID-19) Salgınının Diş Hekimlerinin Tedavi Kliniği Düzeni Üzerine Etkisi
Onur Altuğ SAKALLI, Sedanur SAKALLI, Aleyna Öykü AKBAŞAK, Selim ERKUT
ADO Klinik Bilimler Dergisi.2022; 11(2): 140. CrossRef
Aerosol suppression from a handpiece using viscoelastic solution in confined dental office
Yong Il Kim, Seongpil An, Jungwoo Huh, Yang-Soo Kim, Jihye Heo, In-Seok Song, Alexander L. Yarin, Sam S. Yoon
Physics of Fluids.2022;[Epub] CrossRef
Coronavirus Disease (COVID-19) Transmission through Aerosols in Restorative and Endodontic Practice
Ambar W. Raut, Priyatama V. Meshram, Radha A. Raut
Annals of African Medicine.2022; 21(1): 1. CrossRef
Redefining aerosol in dentistry during COVID-19 pandemic
Kanupriya Rathore, HarshvardhanSingh Rathore, Pranshu Singh, Pravin Kumar
Dental Research Journal.2022; 19(1): 53. CrossRef
Different grinding speeds affect induced regeneration capacity of human treated dentin matrix
Min Li, Sen Yang, Jinlin Song, Tiwei Fu, Panpan Liang, Zhi Gao, Jing Tang, Lijuan Guo
Journal of Biomedical Materials Research Part B: Applied Biomaterials.2022; 110(4): 755. CrossRef
In Vivo Pulp Temperature Changes During Class V Cavity Preparation and Resin Composite Restoration in Premolars
DC Zarpellon, P Runnacles, C Maucoski, DJ Gross, U Coelho, FA Rueggeberg, CAG Arrais
Operative Dentistry.2021; 46(4): 374. CrossRef
In vivo evaluation of the virucidal efficacy of chlorhexidine and povidone-iodine mouthwashes against salivary SARS-CoV-2. A randomized-controlled clinical trial
Rola Elzein, Fadi Abdel-Sater, Soha Fakhreddine, Pierre Abi Hanna, Rita Feghali, Hassan Hamad, Fouad Ayoub
Journal of Evidence Based Dental Practice.2021; 21(3): 101584. CrossRef
Possible transmission of Covid-19 & precautions in a dental setting: A review
Sonali Gholap, Amit Mani, Shubhangi Mani, Shivani Sachdeva, Jasleen Kaur Sodhi, Hiral Vora
IP International Journal of Periodontology and Implantology.2021; 6(2): 98. CrossRef
An Evaluation of Two Systems for the Management of the Microbiological Quality of Water in Dental Unit Waterlines: Hygowater® and IGN Calbénium®
Damien Offner, Anne-Marie Musset
International Journal of Environmental Research and Public Health.2021; 18(10): 5477. CrossRef
Restoration of dental services after COVID-19: The fallow time determination with laser light scattering
Xiujie Li, Cheuk Ming Mak, Kuen Wai Ma, Hai Ming Wong
Sustainable Cities and Society.2021; 74: 103134. CrossRef
Possible aerosol transmission of COVID-19 and special precautions in dentistry
Zi-yu Ge, Lu-ming Yang, Jia-jia Xia, Xiao-hui Fu, Yan-zhen Zhang
Journal of Zhejiang University-SCIENCE B.2020; 21(5): 361. CrossRef
Yeni Koronavirüs Salgını ve Diş Hekimliği Tedavileri Üzerine Etkileri
Elif Ballıkaya, Gülce Esentürk, Gizem Erbaş Ünverdi, Zafer Cehreli
Hacettepe University Faculty of Health Sciences Journal.2020; 7(2): 92. CrossRef

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Plugger temperature of cordless heat carriers according to the time elapsed: Hoon-Sang Chang, Se-Hee Park, Kyung-Mo Cho, Jin-Woo Kim; Restor Dent Endod 2018;43(1):e12. Published online February 7, 2018; DOI: https://doi.org/10.5395/rde.2018.43.e12

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Objective

The purpose of this study was to measure the temperature of the plugger tip of 3 cordless heat carriers set at 200°C.

Materials and Methods

Pluggers of the same taper (0.06, 0.08, 0.10) and similar tip sizes (sizes of 50 and 55) from 3 cordless heat carriers, namely SuperEndo-α² (B & L Biotech), Friendo (DXM), and Dia-Pen (Diadent), were used and an electric heat carrier, System B (SybronEndo), was used as the control. The plugger tips were covered with customized copper sleeves, heated for 10 seconds, and the temperature was recorded with a computerized measurement system attached to a K-type thermometer at room temperature (n = 10). The data were analyzed with 2-way analysis of variance at a 5% level of significance.

Results

The peak temperature of the plugger tips was significantly affected by the plugger taper and by the heat carrier brand (p < 0.05). The peak temperature of the plugger tips was between 177°C and 325°C. The temperature peaked at 207°C–231°C for the 0.06 taper pluggers, 195°C–313°C for the 0.08 taper pluggers, and 177°C–325°C for the 0.10 taper pluggers. Only 5 of the 12 plugger tips showed a temperature of 200°C ± 10°C. The time required to reach the highest temperature or 200°C ± 10°C was at least 4 seconds.

Conclusion

When using cordless heat carriers, clinicians should pay attention to the temperature setting and to the activation time needed to reach the intended temperature of the pluggers.

Citations

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Comparative Analysis of Temperature Variation with Three Continuous Wave Obturation Systems in Endodontics: An In Vitro Study
Jesús Mena-Álvarez, Maria Ruiz-Barrio, Norberto Quispe-López, Ana de Pedro-Muñoz, Cristina Rico-Romano
Applied Sciences.2022; 12(12): 6229. CrossRef
Effect of Heat Softening versus Ultrasonic Removal of Root-End Gutta-Percha on the Quality of Root-End Preparation for Endodontic Microsurgery
Zhiting Ling, Ziting Zheng, Yuting Zeng, Lifang Jiang, Yuan Wu, Buling Wu, Wenjuan Yan, Lavinia C. Ardelean
Scanning.2021; 2021: 1. CrossRef

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Temperature changes under demineralized dentin during polymerization of three resin-based restorative materials using QTH and LED units: Sayed-Mostafa Mousavinasab, Maryam Khoroushi, Mohammadreza Moharreri, Mohammad Atai; Restor Dent Endod 2014;39(3):155-163. Published online May 13, 2014; DOI: https://doi.org/10.5395/rde.2014.39.3.155

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Objectives

Light-curing of resin-based materials (RBMs) increases the pulp chamber temperature, with detrimental effects on the vital pulp. This in vitro study compared the temperature rise under demineralized human tooth dentin during light-curing and the degrees of conversion (DCs) of three different RBMs using quartz tungsten halogen (QTH) and light-emitting diode (LED) units (LCUs).

Materials and Methods

Demineralized and non-demineralized dentin disks were prepared from 120 extracted human mandibular molars. The temperature rise under the dentin disks (n = 12) during the light-curing of three RBMs, i.e. an Ormocer-based composite resin (Ceram. X, Dentsply DeTrey), a low-shrinkage silorane-based composite (Filtek P90, 3M ESPE), and a giomer (Beautifil II, Shofu GmbH), was measured with a K-type thermocouple wire. The DCs of the materials were investigated using Fourier transform infrared spectroscopy.

Results

The temperature rise under the demineralized dentin disks was higher than that under the non-demineralized dentin disks during the polymerization of all restorative materials (p < 0.05). Filtek P90 induced higher temperature rise during polymerization than Ceram.X and Beautifil II under demineralized dentin (p < 0.05). The temperature rise under demineralized dentin during Filtek P90 polymerization exceeded the threshold value (5.5℃), with no significant differences between the DCs of the test materials (p > 0.05).

Conclusions

Although there were no significant differences in the DCs, the temperature rise under demineralized dentin disks for the silorane-based composite was higher than that for dimethacrylate-based restorative materials, particularly with QTH LCU.

Citations

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Effect of Shade and Light Curing Mode on the Degree of Conversion of Silorane-Based and Methacrylate-Based Resin Composites
Sayed-Mostafa Mousavinasab, Mohammad Atai, Negar Salehi, Arman Salehi
SSRN Electronic Journal.2024;[Epub] CrossRef
Pulp chamber temperature rise in light-cure bonding of brackets with and without primer, in intact versus restored teeth
Gabriela Cenci SCHMITZ, Fernanda de Souza HENKIN, Mauricio MEZOMO, Mariana MARQUEZAN, Gabriela BONACINA, Maximiliano Schünke GOMES, Eduardo Martinelli Santayana de LIMA
Dental Press Journal of Orthodontics.2023;[Epub] CrossRef
In Vivo Pulp Temperature Changes During Class V Cavity Preparation and Resin Composite Restoration in Premolars
DC Zarpellon, P Runnacles, C Maucoski, DJ Gross, U Coelho, FA Rueggeberg, CAG Arrais
Operative Dentistry.2021; 46(4): 374. CrossRef

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Basic Research

The evaluation of periodontal ligament cells of rat teeth after low-temperature preservation under high pressure: Jin-Ho Chung, Jin Kim, Seong-Ho Choi, Eui-Seong Kim, Jiyong Park, Seung-Jong Lee; J Korean Acad Conserv Dent 2010;35(4):285-294. Published online July 31, 2010; DOI: https://doi.org/10.5395/JKACD.2010.35.4.285

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The purpose of this study was to evaluate the viability of periodontal ligament cells of rat teeth after low-temperature preservation under high pressure by means of MTT assay, WST-1 assay. 12 teeth of Sprague-Dawley white female rats of 4 week-old were used for each group.

Both side of the first and second maxillary molars were extracted as atraumatically as possible under tiletamine anesthesia. The experimental groups were group 1 (Immediate extraction), group 2 (Slow freezing under pressure of 3 MPa), group 3 (Slow freezing under pressure of 2 MPa), group 4 (Slow freezing under no additional pressure), group 5 (Rapid freezing in liquid nitrogen under pressure of 2 MPa), group 6 (Rapid freezing in liquid nitrogen under no additional pressure), group 7 (low-temperature preservation at 0℃ under pressure of 2 MPa), group 8 (low-temperature preservation at 0℃ under no additional pressure), group 9 (low-temperature preservation at -5℃ under pressure of 90 MPa). F-medium and 10% DMSO were used as preservation medium and cryo-protectant. For cryo-preservation groups, thawing was performed in 37℃ water bath, then MTT assay, WST-1 assay were processed. One way ANOVA and Tukey HSD method were performed at the 95% level of confidence. The values of optical density obtained by MTT assay and WST-1 were divided by the values of eosin staining for tissue volume standardization.

In both MTT and WST-1 assay, group 7 (0℃/2 MPa) showed higher viability of periodontal ligament cells than other group (2-6, 8) and this was statistically significant (p < 0.05), but showed lower viability than group 1, immediate extraction group (no statistical significance).

By the results of this study, low-temperature preservation at 0℃ under pressure of 2 MPa suggest the possibility for long term preservation of teeth.

Citations

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Evaluation of the Viability of Rat Periodontal Ligament Cells after Storing at 0℃/2 MPa Condition up to One Week: In Vivo MTT Method
Sun Mi Jang, Sin-Yeon Cho, Eui-Seong Kim, Il-Young Jung, Seung Jong Lee
Journal of Korean Dental Science.2016; 9(1): 1. CrossRef

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Original Articles

Comparative analysis of various corrosive environmental conditions for NiTi rotary files: Ji-Wan Yum, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim; J Korean Acad Conserv Dent 2008;33(4):377-388. Published online July 31, 2008; DOI: https://doi.org/10.5395/JKACD.2008.33.4.377

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The aim of the present study is to compare the corrosion tendency using two kinds of NiTi files in the various environmental conditions through the visual examination and electrochemical analysis. ProTaper Universal S2, 21 mm (Dentsply Maillefer, Ballaigues, Switzerland) and Hero 642, 0.06 tapers, size 25, 21 mm (Micromega, Besancon, France) rotary instruments were tested. The instruments were randomly divided into eighteen groups (n = 5) by the immersion temperature, the type of solution, the brand of NiTi rotary instrument and the presence of mechanical loading. Each file was examined at various magnifications using Scanning Electron Microscope (JEOL, Akishima, Tokyo, Japan) equipped with energy dispersive X-ray microanalysis (EDX). EDX was used to determine the components of the endodontic file alloy in corroded and noncorroded areas. The corrosion resistance of unused and used NiTi files after repeated uses in the human teeth was evaluated electrochemically by potentiodynamic polarization test using a potentiostat (Applied Corrosion Monitoring, Cark-in-Cartmel, UK).

Solution temperature and chloride ion concentration may affect on passivity of NiTi files. Under the conditions of this in vitro study, the corrosion resistance is slightly increased after clinical use.

Citations

Citations to this article as recorded by

Comparing Cyclic Fatigue Resistance and Free Recovery Transformation Temperature of NiTi Endodontic Single-File Systems Using a Novel Testing Setup
Emad Youssef, Holger Jungbluth, Søren Jepsen, Manfred Gruener, Christoph Bourauel
Materials.2024; 17(3): 566. CrossRef
The Determination of the Corrosion Rates of Rotary Ni-Ti Instruments in Various Irrigation Solutions
Tolga Özcan, Bade Sonat, Meltem Dartar Öztan, Fatma Basmaci, Umut Aksoy
Cyprus Journal of Medical Sciences.2023; 8(2): 136. CrossRef
A Nonlinear Probabilistic Pitting Corrosion Model of Ni–Ti Alloy Immersed in Shallow Seawater
Špiro Ivošević, Gyöngyi Vastag, Nataša Kovač, Peter Majerič, Rebeka Rudolf
Micromachines.2022; 13(7): 1031. CrossRef
Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment
Tatiana Dias Costa, Elison da Fonseca e Silva, Paula Liparini Caetano, Marcio José da Silva Campos, Leandro Marques Resende, André Guimarães Machado, Antônio Márcio Resende do Carmo
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Effect of Sodium Hypochlorite, EDTA, and Chitosan Solution on Corrosion and Quantity of Extruded Nickel Ions Using Two Rotary Instruments (In Vitro)
Eltica Oktavia, Trimurni Abidin
World Journal of Dentistry.2019; 10(3): 207. CrossRef

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Measurement of thermal expansion characteristic of root canal filling materials: Gutta-percha and Resilon: Kyung-A Jeon, In-Bog Lee, Kwang-Shik Bae, Woo-Cheol Lee, Seung-Ho Baek; J Korean Acad Conserv Dent 2006;31(5):344-351. Published online September 30, 2006; DOI: https://doi.org/10.5395/JKACD.2006.31.5.344

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The purpose of this study was to evaluate the thermal expansion characteristics of injectable thermoplasticized gutta-perchas and a Resilon. The materials investigated are Obtura gutta-percha, Diadent gutta-percha, E&Q Gutta-percha Bar and Epiphany (Resilon).

The temperature at the heating chamber orifice of an Obtura II syringe and the extruded gutta-percha from the tip of both 23- and 20-gauge needle was determined using a Digital thermometer. A cylindrical ceramic mold was fabricated for thermal expansion test, which was 27 mm long, with an internal bore diameter of 3 mm and an outer diameter of 10 mm. The mold was filled with each experimental material and barrel ends were closed with two ceramic plunger. The samples in ceramic molds were heated in a dilatometer over the temperature range from 25℃ to 75℃. From the change of specimen length as a function of temperature, the coefficients of thermal expansion were determined.

There was no statistical difference between four materials in the thermal expansion in the range from 35℃ to 55℃ (p > 0.05). However, Obtura Gutta-percha showed smaller thermal expansion than Diadent and Metadent ones from 35℃ to 75℃ (p < 0.05). The thermal expansion of Epiphany was similar to those of the other gutta-percha groups.

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Analysis of temperature rise on the surface of buchanan plugger using thermocouple: Jin-Suk Cho, Yun-Chan Hwang, Sun-Ho Kim, In-Nam Hwang, Bo-Young Choi, Young-Jin Jeong, Woo-Nam Juhng, Won-Mann Oh; J Korean Acad Conserv Dent 2003;28(4):334-340. Published online July 31, 2003; DOI: https://doi.org/10.5395/JKACD.2003.28.4.334

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This study was performed to evaluate the actual temperature rise on the surface of Buchanan plugger using thermocouple. The heat carrier system 'System B Heatsource' (Model 1005, Analytic Technologies, Redmond, WA, USA) and the Buchanan pluggers of F, FM, M and ML sizes are used for this study. The temperature was set to 200℃ on digital display and the power level on it was set to 10. Five thermocouples were placed in direct contact with the surface of each size of Buchanan's pluggers at 1 mm increments from the tip to the 4 mm length of shank. The heat control spring was touched for 5 seconds, and the temperature rise on the surface of the pluggers were measured at 1 sec intervals for more than 5 seconds with an accuracy of 0.01 using Data Logger. The data were statistically analyzed by one-way ANOVA.

The results were as follows.

The position at which the temperature peaked was approximately at 1~2 mm far from the tip of Buchanan plugger (p<0.01).

The peak temperature was 215.25±2.28℃ in F plugger, 185.94±2.19℃ in FM plugger, 169.51±9.12℃ in M plugger, and 160.79±1.27℃ in ML plugger and the peak temperature was highest in F plugger and followed by, in descending order, FM plugger, M plugger. ML plugger showed the lowest peak temperature (p<0.01).

The temperature on the pluggers was decreased with the increase of touching time.

This results suggest that the actual temperature on the surface of the pluggers does not correlate well with the temperature set on digital display. Heat concentrates around the tip. The larger plugger reveals lower temperature rise relatively.

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