Effect of surface sealant on surface roughness of dental composite with different surface roughness
10.14368/jdras.2023.39.4.195
- Author:
Dong-Ah SHIN
1
;
Seon-Ju JIN
;
Kkot-Byeol BAE
;
In-Nam HWANG
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Publication Type:Original Article
- From:Journal of Dental Rehabilitation and Applied Science
2023;39(4):195-203
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:This study aimed to evaluate the influence of surface sealants on the surface roughness of composite resins.
Materials and Methods:The study used microfilled composite resin (Metafil CX, Sun Medical Co.) and hybrid composite resin (Aelite™ LS posterior, Bisco). Sixty specimens (8 mm in diameter and 4 mm in height) of each composite resin type were prepared and divided into 3 groups. Each specimen was ground with 600, 1000, and 2000-grit sandpaper. The Surface roughness (Ra) values were measured using a surface roughness tester (SJ-301, Mytutoyo) before and after surface sealant application. Surface sealants, BisCover™ LV (Bisco), Optiguard® (Kerr), and Seal-n-Shine™ (Pulpdent), were applied to the specimens, as instructed and observed by scanning electron microscope (JSM-7500, JEOL) and atomic force microscope (MultiMode IV, Veeco Instruments).
Results:Specimens ground with 600-grit sandpaper coated with surface sealants exhibited significantly lower Ra values than the untreated group (P < 0.05).Specimens ground with 1000 and 2000-grit sandpaper showed statistically no difference. There was no significant difference in surface roughness among BisCover™ LV, Optiguard®, and Seal-n-Shine™. SEM and AFM revealed remarkably decreased microdefects on the surfaces of composite resins after surface sealant application.
Conclusion:Surface sealants can influence surface roughness when applied on the rough surface of composite resins but not on highly polished composite resins.
