Journal of the Korean Academy of Pediatric Dentistry 2009;36(3):440-447.
Published online August 31, 2009.
MICROHARDNESS AND SURFACE ROUGHNESS OF SEALANT AND FLOWABLE COMPOSITE RESINS
Kyu-Ho Yang, Nam-Ki Choi, Seon-Mi Kim, Ji-Eun Choi
Department of Pediatric Dentistry, School of Dentistry, Chonnam National University and Dental Research Institute and second stage of BK 21 
치면열구전색제와 유동성 복합 레진의 미세 경도 및 표면 조도의 비교
양규호, 최남기, 김선미, 최지은
전남대학교 치의학전문대학원 소아치과학교실, 치의학연구소 및 BK21 사업단
Correspondence:  Kyu-Ho Yang,  Tel: 062-530-5668, Email: hellopedo@hanmail.net
Received: 23 June 2009   • Accepted: 8 July 2009
Abstract
This study was performed to compare the wear resistance of sealant and flowable resins for analyzing the effect of flowable resin as a sealant in preventive resin restorations. Specimens were made and Vicker's hardness number and surface roughness were measured. SEM observations of the polished and abraded surfaces were established. Kruskal-Wallis rank test and Mann-Whitney U test at the significant level of α=0.05 were used. The following results were obtained: 1. The microhardness was decreased among groups in following order: Z350 (3M ESPE, U.S.A), Estelite (Tokuyama Dental, Japan) and Ultraseal (Ultradent, U.S.A). There were significant differences in all groups (p<0.0001). 2. The surface roughness was decreased among groups in following order: Ultraseal XT plus, Palfique Estelite LV and Filtek Z350 flowable. However, there is no statistically significant differences in roughness among Estellite, Z350 and Ultraseal at the significance level of α=0.05, with p=0.116 3. SEM observation of the unworn and worn surfaces revealed the qualitative differences in the wear appearance among groups. The results in this study indicate that flowable resin is better than sealant in aspect of physical properties.
Key Words: Flowable resin, Sealant, Microhardness, Surface roughness


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