Journal of the Korean Academy of Pediatric Dentistry 2005;32(3):557-568.
Published online August 31, 2005.
WEAR AND CHEMICAL DEGRADATION OF ESTHETIC RESTORATIVE MATERIALS
Kyu-Ho Yang, Eun-Young Choi, Nam-Ki Choi, Seon-Mi Kim
Department of Pediatric Dentistry, College of Dentistry, Chonnam National University, Dental Research Institute 
차세대 레진 개발을 위한 광중합형 복합레진의 화학적 분해와 마모에 관한 연구
양규호, 최은영, 최남기, 김선미
전남대학교 치과대학 소아치과학교실 및 치의학 연구소
Correspondence:  Kyu-Ho Yang,  Tel: 062-220-5476, Email: hellopedo@hanmail.net
Abstract
The aim of this study was to evaluate the resistance to degradation and to compare the wear resistance characteristics of four esthetic restorative materials in an alkaline solution(0.1N NaOH). The brands studied were MetafilCX(Sun medical, Japan) Solitaire 2(Heraeus Kulzer, USA), Composan LCM(Promedica, Germany), DenFil(Vericom, Korea). The results were as follows: 1. The mass loss of each brand was 0.74~7.94% and highest value in Metafil(7.94±0.39%). 2. The sequence of the degree of degradation layer depth was in descending order by Metafil, Solitaire 2, DenFil, Composan LCM. There were significant differences between Metafil and the others(p<0.05). 3. The sequence of the Si loss was in descending order by Metafil, Solitaire 2, Composan LCM, DenFil. There were significant differences among the materials(p<0.05). 4. On SEM, destruction of bonding between matrix and filler and on CLSM, the depth of degradation layer of specimen surface was observed. 5. The sequence of maximum wear depth was in descending order by Metafil, Solitaire 2, Composan LCM and DenFil. There were significant differences among the materials(p<0.05). 6. The correlation coefficient between Si loss and degradation layer depth (r=0.491, p<0.05) and Vicker's hardness number and maximum wear depth (r=-0.942, p<0.05) were relatively high. These results indicate that hydrolytic degradation and wear may consider as a evaluation factors of composite resins.
Key Words: Composite resin, Wear, Hydrolytic degradation


ABOUT
BROWSE ARTICLES
EDITORIAL POLICY
FOR CONTRIBUTORS
Editorial Office
Seoul National University, Dental Hospital, B1-166 101, Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
Tel: +82-70-4145-8875    Fax: +82-2-745-8875    E-mail: info@kapd.org                

Copyright © 2024 by Korean Academy of Pediatric Dentistry.

Developed in M2PI

Close layer
prev next