Restorative Dentistry & Endodontics

Hyun-Jung Ko

3 Articles

Evaluation of the rat tissue reaction to experimental new resin cement and mineral trioxide aggregate cement: Won-Kyung Yang, Hyun-Jung Ko, Mi-Ri Kim; Restor Dent Endod 2012;37(4):194-200. Published online November 21, 2012; DOI: https://doi.org/10.5395/rde.2012.37.4.194

Objectives

New resin cement (NRC) has been developed as a root repairing material and the material is composed of organic resin matrix and inorganic powders. The aim of this study was to compare the rat subcutaneous tissue response to NRC and mineral trioxide aggregate (MTA) cement and to investigate the tissue toxicity of both materials.

Materials and Methods

Sixty rats received two polyethylene tube-implants in dorsal subcutaneous regions, MTA and NRC specimens. Twenty rats were sacrificed respectively at 1, 4 and 8 wk after implantation and sectioned to 5 µm thickness and stained with Hematoxylin-Eosin (H-E) or von-Kossa staining. The condition of tissue adjacent to the implanted materials and the extent of inflammation to each implant were evaluated by two examiners who were unaware of the type of implanted materials in the tissues. Data were statistically analyzed with paired t-test (p < 0.05).

Results

In specimens implanted with both NRC and MTA, severe inflammatory reactions were present at one wk, which decreased with time. At eighth wk, MTA implanted tissue showed mild inflammatory reaction, while there were moderate inflammatory reactions in NRC implanted tissue, respectively. In NRC group, von-Kossa staining showed more calcification materials than MTA group at eighth wk.

Conclusions

It was concluded that the calcium reservoir capability of NRC may contribute to mineralization of the tissues.

Citations

Citations to this article as recorded by

Biomineralization of three calcium silicate-based cements after implantation in rat subcutaneous tissue
Ranjdar Mahmood Talabani, Balkees Taha Garib, Reza Masaeli, Kavosh Zandsalimi, Farinaz Ketabat
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Genotoxicity of root canal sealers: a literature review
Fábio Miguel dos Santos Costa, Maria Helena Fernandes, Silvia Regina Batistuzzo de Medeiros
Clinical Oral Investigations.2020; 24(10): 3347. CrossRef
Marginal adaptation, solubility and biocompatibility of TheraCal LC compared with MTA-angelus and biodentine as a furcation perforation repair material
M. A. Alazrag, A. M. Abu-Seida, K. M. El-Batouty, S. H. El Ashry
BMC Oral Health.2020;[Epub] CrossRef
Evaluation in vivo of biocompatibility of differents resin-modified cements for bonding orthodontic bands
JANAINA A. MESQUITA, ROGÉRIO LACERDA-SANTOS, GÊISA A.M. SAMPAIO, GUSTAVO P. GODOY, CASSIANO F.W. NONAKA, POLLIANNA M. ALVES
Anais da Academia Brasileira de Ciências.2017; 89(3 suppl): 2433. CrossRef
A preliminary report on histological outcome of pulpotomy with endodontic biomaterials vs calcium hydroxide
Ali Nosrat, Ali Peimani, Saeed Asgary
Restorative Dentistry & Endodontics.2013; 38(4): 227. CrossRef
Biocompatibility of root-end filling materials: recent update
Payal Saxena, Saurabh Kumar Gupta, Vilas Newaskar
Restorative Dentistry & Endodontics.2013; 38(3): 119. CrossRef

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Accuracy of Root ZX in teeth with simulated root perforation in the presence of gel or liquid type endodontic irrigant: Hyeong-Soon Shin, Won-Kyung Yang, Mi-Ri Kim, Hyun-Jung Ko, Kyung-Mo Cho, Se-Hee Park, Jin-Woo Kim; Restor Dent Endod 2012;37(3):149-154. Published online August 29, 2012; DOI: https://doi.org/10.5395/rde.2012.37.3.149

Abstract PDF PubReader ePub

Objectives

To evaluate the accuracy of the Root ZX in teeth with simulated root perforation in the presence of gel or liquid type endodontic irrigants, such as saline, 5.25% sodium hypochlorite (NaOCl), 2% chlorhexidine liquid, 2% chlorhexidine gel, and RC-Prep, and also to determine the electrical conductivities of these endodontic irrigants.

Materials and Methods

A root perforation was simulated on twenty freshly extracted teeth by means of a small perforation made on the proximal surface of the root at 4 mm from the anatomic apex. Root ZX was used to locate root perforation and measure the electronic working lengths. The results obtained were compared with the actual working length (AWL) and the actual location of perforations (AP), allowing tolerances of 0.5 or 1.0 mm. Measurements within these limits were considered as acceptable. Chi-square test or the Fisher's exact test was used to evaluate significance. Electrical conductivities of each irrigant were also measured with an electrical conductivity tester.

Results

The accuracies of the Root ZX in perforated teeth were significantly different between liquid types (saline, NaOCl) and gel types (chlorhexidine gel, RC-Prep). The accuracies of electronic working lengths in perforated teeth were higher in gel types than in liquid types. The accuracy in locating root perforation was higher in liquid types than gel types. 5.25% NaOCl had the highest electrical conductivity, whereas 2% chlorhexidine gel and RC-Prep gel had the lowest electrical conductivities among the five irrigants.

Conclusions

Different canal irrigants with different electrical conductivities may affect the accuracy of the Root ZX in perforated teeth.

Citations

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Effect of Different Electroconductive Root Canal Irrigations on the Accuracy of Different Apex Locators: An In Vitro Comparative Study
Eman M. Yahya, Ashraf S. Alchalabi, Emad Farhan Alkhalidi
Journal of International Society of Preventive and Community Dentistry.2024; 14(3): 211. CrossRef
The precision of radiographic and electronic working length estimation methods in endodontics: A systematic review of clinical studies
Anithakumari Rangappa, Buvaneshwari Arul, Jayalakshmi Somasundaram, Velmurugan Natanasabapathy
Endodontology.2024;[Epub] CrossRef
Comparative evaluation of the accuracy of electronic apex locators and cone-beam computed tomography in detection of root canal perforation and working length during endodontic retreatment
Simay Koç, Hatice Harorlı, Alper Kuştarcı
BMC Oral Health.2024;[Epub] CrossRef
Comparative Accuracy and Reliability of Three Electronic Apex Locators in Determining the Apical Constriction of Molar Canals: A Micro-CT Evaluation
Reem M. Barakat, Rahaf A. Almohareb, Arwa O. Alharbi, Asma Alhazmi, Reem Alomar
Journal of Clinical Medicine.2024; 13(17): 5199. CrossRef
Accuracy of the integrated electronic apex locator in locating simulated perforation under various irrigating solutions in an in vitro study
Chintan Joshi, Surabhi Joshi, Urooj Desai, Sweety Thumar, Aashray Patel, Ankita Khunt
Brazilian Journal of Oral Sciences.2024; 23: e241118. CrossRef
The Accuracy of Different Apex Locator Systems in Detecting Root Perforations in the Presence of Different Irrigation Solutions
Oğuz Burhan Çetinkaya, Emre Çulha, Uğur Aydın
European Journal of Therapeutics.2023; 30(1): 39. CrossRef
In Vitro Comparison of the Accuracy of Cone-Beam Computed Tomography Scanning and Electronic Apex Locators in Detection of Simulated Root Perforations in Different Localizations
Hatice Harorlı, Simay Koç, Alper Kuştarcı
Journal of Endodontics.2023; 49(12): 1676. CrossRef
Accuracy of different electronic apex locators in determination of minimum Root perforation diameter
Simay Koç, Alper Kuştarcı, Kürşat Er
Australian Endodontic Journal.2023; 49(S1): 179. CrossRef
The influence of MTAD and QMix on the accuracy of electronic apex locator in locating simulated perforations
A Dumani, AA Ates, CS Ucan, S Yilmaz, I Unal, O Yoldas
Nigerian Journal of Clinical Practice.2022; 25(3): 281. CrossRef
Synthesis and evaluation of grafted xanthan gum as a drug carrier in developing lornoxicam gel formulations
SandipAshok Murtale, PrakashS Goudanavar, NRaghavendra Naveen, WalaaF Alsanie, Majid Alhomrani, AbdulhakeemS Alamri, SyedMohammed Basheeruddin Asdaq, MdKhalid Anwer, Nagaraja Sreeharsha, MazenAl Gharsan, Santosh Fattepur
Pharmacognosy Magazine.2022;[Epub] CrossRef
KOMBİNE İRRİGASYON SOLÜSYONLARININ ELEKTRİKSEL İLETKENLİĞİNİN KARŞILAŞTIRILMASI
Ayşin DUMANİ, Şehnaz YILMAZ, Oğuz YOLDAŞ, Güray KILINÇÇEKER
Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi.2022; : 1. CrossRef
Accuracy of electronic apex locator in the presence of different irrigating solutions
Padmanabh Jha, Vineeta Nikhil, Shalya Raj, Rohit Ravinder, Preeti Mishra
Endodontology.2021; 33(4): 232. CrossRef
Comparative Evaluation of Accuracy of Different Apex Locators: Propex IQ, Raypex 6, Root ZX, and Apex ID with CBCT and Periapical Radiograph—In Vitro Study
Okba Mahmoud, Mawada Hassan Awad Abdelmagied, Ahmad Hisham Dandashi, Bakr Nssaief Jasim, Hussam Alddin Tawfik Kayali, Saaid Al Shehadat, Luca Testarelli
International Journal of Dentistry.2021; 2021: 1. CrossRef
Evaluation of Temperature Increase From Joule Heat in Numerical Tooth Model by Applying 500 kHz Current for Apical Periodontitis Treatment—Effect of Applied Voltage and Tooth Conductivity
Hiroo Tarao, Masatake Akutagawa, Takahiro Emoto, Amane Takei, Hiromichi Yumoto, Toshihiko Tominaga, Toshitaka Ikehara, Yosuke Kinouchi
Bioelectromagnetics.2021; 42(3): 224. CrossRef
Confort visual en oficinas, factor temporal en la evaluación de deslumbramiento
J. Yamin, A. Pattini, E. Colombo
Informes de la Construcción.2020; 72(557): e329. CrossRef
The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators
Ewa Marek, Ryta Łagocka, Katarzyna Kot, Krzysztof Woźniak, Mariusz Lipski
BMC Oral Health.2020;[Epub] CrossRef
Efficiency of an integrated apex locator in determining working length in various irrigating solutions: An in vivo study
RakeshReddy Chukka, MalatiDevi Bellam, NarenderReddy Marukala, Sainath Dinapadu, NareshKumar Konda, Jithender Nagilla
Journal of Pharmacy And Bioallied Sciences.2020; 12(5): 410. CrossRef
Accuracy of two electronic apex locators in locating root perforations in curved canals in dry and wet conditions: A comparative in vitro study
MonishaParshotam Khatri, SheetalB Ghivari, Madhu Pujar, Reshma Faras, Pallavi Gopeshetti, Amulya Vanti
Dental Research Journal.2019; 16(6): 407. CrossRef
Consistency of electronic measurements of endodontic working length when using multiple devices from the same manufacturer—an in vitro study
Franziska Haupt, M Hülsmann
Clinical Oral Investigations.2018; 22(9): 3107. CrossRef
The Influence of Various Irrigants on the Accuracy of 2 Electronic Apex Locators in Locating Simulated Root Perforations
Demet Altunbaş, Alper Kuştarcı, Mustafa Toyoğlu
Journal of Endodontics.2017; 43(3): 439. CrossRef
Accuracy and Repeatability of 3 Apex Locators in Locating Root Canal Perforations: An Ex Vivo Study
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Journal of Endodontics.2014; 40(8): 1241. CrossRef

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Apical microleakage of MTA with 4-META/MMA & TBB resin as a root-end filling material: Jin-Cheol Kim, Mi-Ri Kim, Hyun-Jung Ko, Won-Kyung Yang; J Korean Acad Conserv Dent 2009;34(4):371-376. Published online July 31, 2009; DOI: https://doi.org/10.5395/JKACD.2009.34.4.371

Abstract PDF PubReader ePub

We evaluated in vitro microleakage of Mineral Trioxide Aggregate (MTA) powder with 4-methacryloxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resin as a retrograde filling material by using methylene blue dye method.

Fifty-two single rooted, extracted teeth were instrumented and obturated with gutta percha and AH plus sealer. The apical 3mm of each root was resected and 3mm deep ultrasonic root end preparation was done. External surface of roots was coated with nail varnish. Prepared teeth were randomly divided into five groups; Negative control: completely covered with nail varnish; Positive control: coated with nail varnish except for apical foramen; Group 1 (retrofilled with Portland cement); Group 2 (retrofilled with MTA); Group 3 (retrofilled with MTA powder mixed with 4-META/MMA & TBB resin). Immediately after completion of root-end filling, all specimens were submerged in methylene blue dye for 72 hours in 37℃ incubator. The roots were longitudinally sectioned and measured for extent of dye penetration by three different examiners under microscope (×10). The results were statistically analyzed using one way ANOVA and Turkey's HSD test. No leakage was evident in negative control and complete leakage in positive control group. Group 3 showed significantly less leakage than group 1 and 2 (p < 0.01). There was no significant difference between group 1 and 2 (p > 0.01).

It was concluded that MTA powder with 4-META/MMA & TBB resin was excellent in reducing initial apical microleakage.

Citations

Citations to this article as recorded by

Characteristics of novel root-end filling material using epoxy resin and Portland cement
Sang-Jin Lee, Jin Chung, Hee-Sam Na, Eun-Joo Park, Hyo-Jin Jeon, Hyeon-Cheol Kim
Clinical Oral Investigations.2013; 17(3): 1009. 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
Physical properties of novel composite using Portland cement for retro-filling material
Sang-Jin Lee, Ok-In Cho, Jiwan Yum, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
Journal of Korean Academy of Conservative Dentistry.2010; 35(6): 445. CrossRef

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