Restorative Dentistry & Endodontics

A step towards international society: Byeong-Hoon Cho; Restor Dent Endod 2012;37(1):1-1. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.1

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Effects of matrix metallproteinases on dentin bonding and strategies to increase durability of dentin adhesion: Jung-Hyun Lee, Juhea Chang, Ho-Hyun Son; Restor Dent Endod 2012;37(1):2-8. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.2

The limited durability of resin-dentin bonds severely compromises the longevity of composite resin restorations. Resin-dentin bond degradation might occur via degradation of water-rich and resin sparse collagen matrices by host-derived matrix metalloproteinases (MMPs). This review article provides overview of current knowledge of the role of MMPs in dentin matrix degradation and four experimental strategies for extending the longevity of resin-dentin bonds. They include: (1) the use of broad-spectrum inhibitors of MMPs, (2) the use of cross-linking agents for silencing the activities of MMPs, (3) ethanol wet-bonding with hydrophobic resin, (4) biomimetic remineralization of water-filled collagen matrix. A combination of these strategies will be able to overcome the limitations in resin-dentin adhesion.

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Remineralization Effects of Silver Fluoride, Silver Diamine Fluoride, and Sodium Fluoride Varnish
Jihyeon Lee, Hwalim Lee, Jongsoo Kim, Joonhaeng Lee, Jongbin Kim, Jisun Shin, Miran Han
International Journal of Clinical Preventive Dentistry.2024; 20(1): 19. CrossRef

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Effect of different chlorhexidine application times on microtensile bond strength to dentin in Class I cavities: Hyun-Jung Kang, Ho-Jin Moon, Dong-Hoon Shin; Restor Dent Endod 2012;37(1):9-15. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.9

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Objectives

This study evaluated the effect of 2% chlorhexidine digluconate (CHX) with different application times on microtensile bonds strength (MTBS) to dentin in class I cavities and intended to search for ideal application time for a simplified bonding protocol.

Materials and Methods

Flat dentinal surfaces with class I cavities (4 mm × 4 mm × 2 mm) in 40 molar teeth were bonded with etch-and-rinse adhesive system, Adper Single Bond 2 (3M ESPE) after: (1) etching only as a control group; (2) etching + CHX 5 sec + rinsing; (3) etching + CHX 15 sec + rinsing; (4) etching + CHX 30 sec + rinsing; and (5) etching + CHX 60 sec + rinsing. Resin composite was built-up with Z-250 (3M ESPE) using a bulk method and polymerized for 40 sec. For each condition, half of the specimens were immediately submitted to MTBS test and the rest of them were assigned to thermocycling of 10,000 cycles between 5℃ and 55℃ before testing. The data were analyzed using two-way ANOVA, at a significance level of 95%.

Results

There was no significant difference in bond strength between CHX pre-treated group and control group at the immediate testing period. After thermocycling, all groups showed reduced bond strength irrespective of the CHX use. However, groups treated with CHX maintained significantly higher MTBS than control group (p < 0.05). In addition, CHX application time did not have any significant influence on the bond strength among groups treated with CHX.

Conclusion

Application of 2% CHX for a short time period (5 sec) after etching with 37% phosphoric acid may be sufficient to preserve dentin bond strength.

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Effect of nonthermal atmospheric plasma application at different time intervals on the dentinal shear bond strength pretreated with 2% chlorhexidine as cavity disinfectant: An in vitro study
Roopadevi Garlapati, Nagesh Bolla, Gali Praveen Kumar, Mayana Aameena Banu, Bandlapally Sreenivasa Guptha Anila, Shaik Afreen Kamal
Journal of Conservative Dentistry and Endodontics.2024; 27(7): 769. CrossRef
Comparative evaluation ofEmblica officinalisas an etchant and an MMP inhibitor with orthophosphoric acid and chlorhexidine on the microshear bond strength of composite resin: anex vivostudy
Divya Sangeetha Rajkumar, Annapoorna Ballagere Mariswamy
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Effect of Cavity Disinfectants on Adhesion to Primary Teeth—A Systematic Review
Ana Coelho, Inês Amaro, Ana Apolónio, Anabela Paula, José Saraiva, Manuel Marques Ferreira, Carlos Miguel Marto, Eunice Carrilho
International Journal of Molecular Sciences.2021; 22(9): 4398. CrossRef
Effect of Different Matrix Metalloproteinase Inhibitors on Shear Bond Strength of Composite Attached to Primary Teeth Dentin
Najmeh Mohammadi, Zahra Parsaie, Dana Jafarpour, Fatemeh Bizolm
European Journal of General Dentistry.2020; 9(03): 147. CrossRef

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Effect of fluoride concentration in pH 4.3 and pH 7.0 supersaturated solutions on the crystal growth of hydroxyapatite: Haneol Shin, Sung-Ho Park, Jeong-Won Park, Chan-Young Lee; Restor Dent Endod 2012;37(1):16-23. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.16

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Objectives

Present study was undertaken to investigate the crystal growth onto synthetic hydroxyapatite (HA) seeds in pH 4.3 and pH 7.0 supersaturated solutions with different fluoride concentrations.

Materials and Methods

8 groups of pH 4.3 and 7.0 calcium phosphate supersaturated solutions were prepared with different fluoride concentrations (0, 1, 2 and 4 ppm). Calcium phosphate precipitates yield crystal growth onto the HA seed surface while solutions flow. For evaluation of crystallizing process, the changes of Ca²⁺, PO₄^3-, F^- concentrations of the inlet and outlet solutions were determined. The recovered solid samples were weighed to assess the amount of minerals precipitated, and finally determined their composition to deduce characteristics of crystals.

Results

During the seeded crystal growth, there were significantly more consumption of Ca²⁺, PO₄^3-, F^- in pH 4.3 solutions than pH 7.0 (p < 0.05). As fluoride concentration increased in pH 4.3 solution, Ca²⁺, PO₄^3-, F^- consumption in experimental solutions, weight increment of HA seed, and fluoride ratio in crystallized samples were increased. There were significant differences among the groups (p < 0.05). But in pH 7.0 solution, these phenomena were not significant. In pH 7.0 solutions, analyses of crystallized samples showed higher Ca/P ratio in higher fluoride concentration. There were significant differences among the groups (p < 0.05). But in pH 4.3 solution, there were not significant differences in Ca/P ratio.

Conclusions

Crystal growth in pH 4.3 solutions was superior to that in pH 7.0 solutions. In pH 4.3 solutions, crystal growth increased with showed in higher fluoride concentration up to 4 ppm.

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Qualitative analysis on crystal growth of synthetic hydroxyapatite influenced by fluoride concentration
Sumi Kang, Jeong Taeg Seo, Sung-Ho Park, Il Young Jung, Chan Young Lee, Jeong-Won Park
Archives of Oral Biology.2019; 104: 52. CrossRef

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Effects of canal enlargement and irrigation needle depth on the cleaning of the root canal system at 3 mm from the apex: Ho-Jin Moon, Chan-Ui Hong; Restor Dent Endod 2012;37(1):24-28. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.24

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Objectives

The aim of this study was to test the hypothesis, that the effectiveness of irrigation in removing smear layer in the apical third of root canal system is dependent on the depth of placement of the irrigation needle into the root canal and the enlargement size of the canal.

Materials and Methods

Eighty sound human lower incisors were divided into eight groups according to the enlargement size (#25, #30, #35 and #40) and the needle penetration depth (3 mm from working length, WL-3 mm and 9 mm from working length, WL-9 mm). Each canal was enlarged to working length with Profile.06 Rotary Ni-Ti files and irrigated with 5.25% NaOCl. Then, each canal received a final irrigation with 3 mL of 3% EDTA for 4 min, followed by 5 mL of 5.25% NaOCl at different level (WL-3 mm and WL-9 mm) from working length. Each specimen was prepared for the scanning electron microscope (SEM). Photographs of the 3mm area from the apical constriction of each canal with a magnification of ×250, ×500, ×1,000, ×2,500 were taken for the final evaluation.

Results

Removal of smear layer in WL-3 mm group showed a significantly different effect when the canal was enlarged to larger than #30. There was a significant difference in removing apical smear layer between the needle penetration depth of WL-3 mm and WL-9 mm.

Conclusions

Removal of smear layer from the apical portion of root canals was effectively accomplished with apical instrumentation to #35/40 06 taper file and 3 mm needle penetration from the working length.

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Numerical Evaluation of Flow Pattern for Root Canal Irrigation Including icrobubbles
Joon Hyun Kim, Chan U Lee, Inwhan Lee, Jaeyong Sung
Journal of the Korean Society of Manufacturing Technology Engineers.2023; 32(5): 251. CrossRef

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Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations: Sang-Mi Yun, Lorena Karanxha, Hee-Jin Kim, Sung-Ho Jung, Su-Jung Park, Kyung-San Min; Restor Dent Endod 2012;37(1):29-33. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.29

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Objectives

The purpose of this study was to evaluate the microleakage of 4 temporary materials in teeth with Class II-type endodontic access preparations by using a glucose penetration model.

Materials and Methods

Glucose reaction test was performed to rule out the presence of any reaction between glucose and temporary material. Class II-type endodontic access preparations were made in extracted human premolars with a single root (n = 10). Each experimental group was restored with Caviton (GC), Spacer (Vericom), IRM (Dentsply-Caulk), or Fuji II(GC). Microleakage of four materials used as temporary restorative materials was evaluated by using a glucose penetration model. Data were analyzed by the one-way analysis of variance followed by a multiple-comparison Tukey test. The interface between materials and tooth were examined under a scanning electron microscope (SEM).

Results

There was no significant reaction between glucose and temporary materials used in this study. Microleakage was significantly lower for Caviton and Spacer than for Fuji II and IRM. SEM observation showed more intimate adaptation of tooth-restoration interfaces in Caviton and Spacer than in IRM and Fuji II.

Conclusions

Compared to IRM and Fuji II, Caviton and Spacer can be considered better temporary sealing materials in Class II-type endodontic access cavities.

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Comparative Evaluation of Sealing Ability, Water Absorption, and Solubility of Three Temporary Restorative Materials: An in vitro Study
AR Prabhakar, N Shantha Rani
International Journal of Clinical Pediatric Dentistry.2017; 10(2): 136. CrossRef
Sealing Ability of Three Different Materials Used as Retrograde Filling
Ji-Hoon Park, Seung-Bok Kang, Yong-Hoon Choi, Ji-Hyun Bae
Journal of Korean Dental Science.2012; 5(2): 60. CrossRef

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Morphological evaluation during in vitro chondrogenesis of dental pulp stromal cells: Choo-Ryung Chung, Ha-Na Kim, Yeul Park, Min-Jeong Kim, Young-Ju Oh, Su-Jung Shin, Yoon-Jeong Choi, Kyung-Ho Kim; Restor Dent Endod 2012;37(1):34-40. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.34

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Objectives

The aim was to confirm the stem cell-like properties of the dental pulp stromal cells and to evaluate the morphologic changes during in vitro chondrogenesis.

Materials and Methods

Stromal cells were outgrown from the dental pulp tissue of the premolars. Surface markers were investigated and cell proliferation rate was compared to other mesenchymal stem cells. Multipotency of the pulp cells was confirmed by inducing osteogenesis, adipogenesis and chondrogenesis. The morphologic changes in the chondrogenic pellet during the 21 day of induction were evaluated under light microscope and transmission electron microscope. TUNEL assay was used to evaluate apoptosis within the chondrogenic pellets.

Results

Pulp cells were CD90, 105 positive and CD31, 34 negative. They showed similar proliferation rate to other stem cells. Pulp cells differentiated to osteogenic, adipogenic and chondrogenic tissues. During chondrogenesis, 3-dimensional pellet was created with multi-layers, hypertrophic chondrocyte-like cells and cartilage-like extracellular matrix. However, cell morphology became irregular and apoptotic cells were increased after 7 day of chondrogenic induction.

Conclusions

Pulp cells indicated mesenchymal stem cell-like characteristics. During the in vitro chondrogenesis, cellular activity was superior during the earlier phase (within 7 day) of differentiation.

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Local myogenic pulp‐derived cell injection enhances craniofacial muscle regeneration in vivo
J. E. Jung, M. J. Song, S. Shin, Y. J. Choi, K. H. Kim, C. J. Chung
Orthodontics & Craniofacial Research.2017; 20(1): 35. CrossRef
Immune Tolerance of Human Dental Pulp-Derived Mesenchymal Stem Cells Mediated by CD4+CD25+ FoxP3+ Regulatory T-Cells and Induced by TGF-β1 and IL-10
Jong Won Hong, Jung Hyun Lim, Chooryung J. Chung, Tae Jo Kang, Tae Yeon Kim, Young Seok Kim, Tae Suk Roh, Dae Hyun Lew
Yonsei Medical Journal.2017; 58(5): 1031. CrossRef
In vitrocharacterization of human dental pulp stem cells isolated by three different methods
Ji-Hyun Jang, Hyeon-Woo Lee, Kyu Min Cho, Hee-Woong Shin, Mo Kwan Kang, Sang Hyuk Park, Euiseong Kim
Restorative Dentistry & Endodontics.2016; 41(4): 283. CrossRef
Effects of two fast-setting calcium-silicate cements on cell viability and angiogenic factor release in human pulp-derived cells
Chooryung J. Chung, Euiseong Kim, Minju Song, Jeong-Won Park, Su-Jung Shin
Odontology.2016; 104(2): 143. CrossRef
A Simplified Method for the Aspiration of Bone Marrow from Patients Undergoing Hip and Knee Joint Replacement for Isolating Mesenchymal Stem Cells andIn VitroChondrogenesis
Subhash C. Juneja, Sowmya Viswanathan, Milan Ganguly, Christian Veillette
Bone Marrow Research.2016; 2016: 1. CrossRef
Local Injection of Pulp Cells Enhances Wound Healing during the Initial Proliferative Phase through the Stimulation of Host Angiogenesis
Hyungjoo Yang, Sujung Shin, Jhiweon Ahn, YoonJeong Choi, Kyung-Ho Kim, Chooryung J. Chung
Journal of Endodontics.2013; 39(6): 788. CrossRef

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Evaluation of internal adaptation of dental adhesive restorations using micro-CT: Oh-Hyun Kwon, Sung-Ho Park; Restor Dent Endod 2012;37(1):41-49. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.41

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Objectives

The internal adaptation of composite restorations with or without resin modified glass ionomer cement (RMGIC) was analyzed non-destructively using Microcomputed tomography (micro-CT).

Materials and Methods

Thirty intact human teeth were used. The specimens were divided into 3 groups. In the control group, the cavities were etched with 10% phosphoric acid for 15 sec. Composite resin was filled into the cavity without adhesive. In group 1, light cured glass ionomer cement (GIC, Fuji II LC, GC) was applied as a base. The cavities were then etched, bonded, light cured and filled with composites. In group 2, the cavities were then etched, bonded, light cured and filled with composites without base application. They were immersed in a 25% silver nitrate solution. Micro-CT was performed before and after mechanical loading. One-way ANOVA with Duncan analysis was used to compare the internal adaptation between the groups before or after loading. A paired t-test was used to compare internal adaptation before and after mechanical loading. All statistical inferences were made within the 95% confidence interval.

Results

The silver nitrate solution successfully penetrated into the dentinal tubules from the pulp spaces, and infiltrated into the gap between restoration and pulpal floor. Group 2 showed a lower adaptation than the control group and group 1 (p < 0.05). There was no significant difference between the control group and group 1. For all groups, there was a significant difference between before and after mechanical loading (p < 0.05).

Conclusions

The internal adaptation before and after loading was better when composites were bonded to tooth using adhesive than composites based with RMGIC.

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Micro-computed tomography in preventive and restorative dental research: A review
Mehrsima Ghavami-Lahiji, Reza Tayefeh Davalloo, Gelareh Tajziehchi, Paria Shams
Imaging Science in Dentistry.2021; 51(4): 341. CrossRef
Gaps at the interface between dentine and self‐adhesive resin cement in post‐endodontic restorations quantified in 3D by phase contrast‐enhanced micro‐CT
A. P. Soares, K. Bitter, A. Lagrange, A. Rack, H. Shemesh, P. Zaslansky
International Endodontic Journal.2020; 53(3): 392. CrossRef
Hard X-ray phase-contrast-enhanced micro-CT for quantifying interfaces within brittle dense root-filling-restored human teeth
Ana Prates Soares, Uwe Blunck, Kerstin Bitter, Sebastian Paris, Alexander Rack, Paul Zaslansky
Journal of Synchrotron Radiation.2020; 27(4): 1015. CrossRef
Comparison of micro-CT and conventional dye penetration for microleakage assessment after different aging conditions
Rayssa Ferreira Zanatta, Annette Wiegand, Christian Dullin, Alessandra Bühler Borges, Carlos Rocha Gomes Torres, Marta Rizk
International Journal of Adhesion and Adhesives.2019; 89: 161. CrossRef
Comparison of Internal Adaptation of Bulk-fill and Increment-fill Resin Composite Materials
FS Alqudaihi, NB Cook, KE Diefenderfer, MC Bottino, JA Platt
Operative Dentistry.2019; 44(1): E32. CrossRef
Polymerization shrinkage assessment of dental resin composites: a literature review
Dalia Kaisarly, Moataz El Gezawi
Odontology.2016; 104(3): 257. CrossRef
Non-destructive evaluation of an internal adaptation of resin composite restoration with swept-source optical coherence tomography and micro-CT
Seung-Hoon Han, Alireza Sadr, Junji Tagami, Sung-Ho Park
Dental Materials.2016; 32(1): e1. CrossRef
Micro-CT evaluation of internal adaptation in resin fillings with different dentin adhesives
Seung-Hoon Han, Sung-Ho Park
Restorative Dentistry & Endodontics.2014; 39(1): 24. CrossRef

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Endodontic management of a maxillary lateral incisor with dens invaginatus and external root irregularity using cone-beam computed tomography: Young-Jun Lim, Sook-Hyun Nam, Sung-Ho Jung, Dong-Ryul Shin, Su-Jung Shin, Kyung-San Min; Restor Dent Endod 2012;37(1):50-53. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.50

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Cone-beam computed tomography (CBCT) is a useful diagnostic tool for identification of both internal and external root configurations. This case report describes the endodontic management of a lateral incisor with both dens invaginatus and external root irregularity by using CBCT. Nonsurgical endodontic retreatment was performed on the lateral incisor with dens invaginatus. A perforation through the dens invaginatus and external concavity was repaired using mineral trioxide aggregate. After 18 mon of follow-up, there were no clinical symptoms. Recall radiographs appeared normal and showed healing of the periapical pathosis. The understanding of both internal root canal configuration and external root irregularity using CBCT can ensure predictable and successful results.

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Cone-beam computed tomography for assessment of dens invaginatus in the Polish population
T. Katarzyna Różyło, Ingrid Różyło-Kalinowska, Magdalena Piskórz
Oral Radiology.2018; 34(2): 136. CrossRef
Nonsurgical Endodontic Management of a Molar-Incisor Malformation-affected Mandibular First Molar: A Case Report
Wonyoung Yue, Euiseong Kim
Journal of Endodontics.2016; 42(4): 664. CrossRef
Three-year follow-up: Healing of a large periapical lesion related to a maxillary central incisor and two canalled lateral incisor after a single visit root canal treatment
Abu Mostafa Ammar
Journal of Dentistry and Oral Hygiene.2015; 7(4): 40. CrossRef
Dilemmas pertaining to three canals in the mesiobuccal root of a maxillary second molar: a case report
Ankit Arora, Shashi Rashmi Acharya, Muliya Vidya Saraswathi, Padmaja Sharma, Amber Ather
Restorative Dentistry & Endodontics.2013; 38(3): 172. CrossRef
Management of root canal perforation by using cone-beam computed tomography
Kyung-San Min
Restorative Dentistry & Endodontics.2013; 38(1): 55. CrossRef
Endodontic treatment of maxillary lateral incisors with anatomical variations
Moon-Hwan Lee, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim
Restorative Dentistry & Endodontics.2013; 38(4): 253. CrossRef

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An embouchure aid for saxophone player: Ho-Jin Moon; Restor Dent Endod 2012;37(1):54-60. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.54

Abstract PDF PubReader ePub: This study aims to introduce the method that can relieve vibrating forces to oral environment by making an embouchure aid. Thin plastic crown forms were fabricated to prevent tooth abrasion and irritation to lip mucosa for the saxophone player. After application to the player, the most comfort form was chosen and delivered to 3 professional saxophone players. After 5 mon, the players responded to the survey. This embouchure aid did not disturb playing and gave comfort to lower lip. In general, the players preferred thin soft type and thought it caused little effect on sound. Far too little attention has been paid to the problems encountered by single-reed wind instrumentalist who suffer from tooth abrasion and irritation to lip mucosa. The embouchure aid not only prevent tooth damage but also diminish the discomfort of tight embouchure.

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Pulp necrosis following luxated injury to teeth in a patient with uncontrolled type II diabetes mellitus: a case report: Haneol Shin, Seung-Jong Lee, Il-Young Jung, Chan-Young Lee; Restor Dent Endod 2012;37(1):61-65. Published online March 2, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.61

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Patients with diabetes mellitus show delayed wound healing and increased susceptibility to infection. Therefore, the effects of diabetes on pulpal and periodontal healing should be taken into consideration when treating diabetic dental traumatized patients. This case presents the treatment for dental traumatized 20 yr old female with uncontrolled type II diabetes. The traumatized upper central incisors had showed pulpal healing in early days. However, 7 mon after the trauma, the teeth had been diagnosed with pulp necrosis with apical abscess. Eventually, non surgical root canal treatment on the teeth had been performed.

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Effects of diabetes mellitus on dental pulp: A systematic review of in vivo and in vitro studies
Rafaella Milla Nunes Pimenta, Alexandre Henrique dos Reis‐Prado, Sabrina de Castro Oliveira, Juliana Goto, Leopoldo Cosme‐Silva, Luciano Tavares Angelo Cintra, Francine Benetti
Oral Diseases.2024; 30(2): 100. CrossRef

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Success and failure of endodontic microsurgery: Minju Song, Euiseong Kim; Restor Dent Endod 2012;37(1):66-66. Published online February 4, 2012; DOI: https://doi.org/10.5395/rde.2012.37.1.66

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