Lipopolysaccharide penetration analysis of two different resin cement systems to dentin and ceramic surface

Won-Jang Jin; Yeon-Jee Yoo; Jeong-Kil Park; Deog-Gyu Seo

doi:10.1016/j.jds.2022.12.013

Lipopolysaccharide penetration analysis of two different resin cement systems to dentin and ceramic surface

J Dent Sci. 2023 Oct;18(4):1740-1746. doi: 10.1016/j.jds.2022.12.013. Epub 2023 Jan 3.

Authors

Won-Jang Jin¹, Yeon-Jee Yoo², Jeong-Kil Park³, Deog-Gyu Seo¹

Affiliations

¹ Department of Conservative Dentistry, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea.
² Department of Comprehensive Treatment Centre, Seoul National University Dental Hospital, Seoul, Republic of Korea.
³ Department of Conservative Dentistry, Dental and Life Science Institute, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Republic of Korea.

Abstract

Background/purpose: One of the challenges in adhesive ceramic restorations is deterioration of tooth-cement-ceramic interfaces. This study was to quantitatively investigate lipopolysaccharide (LPS) penetration through adhesive ceramic restorations.

Materials and methods: Standardized holes were formed on ceramic (IPS Empress CAD, Ivoclar Vivadent) and human dentin discs. Prepared discs were randomly assigned to experimental groups (n = 6/group): SC, self-adhesive resin cement (SmartCem 2, Dentsply Sirona) bonded to ceramic discs; ST, self-adhesive resin cement bonded to dentin discs; VC, etch-and-rinse resin cement (Variolink II, Ivoclar Vivadent AG) bonded to ceramic discs; VT, etch-and-rinse resin cement bonded to dentin discs. The specimens underwent thermocycling (10,000 cycles; 5-55 °C) then LPS penetration test until 5-weeks. A mixed effect analysis using R statistical language was performed for data analysis.

Results: Dentin and ceramic bonded with etch-and-rinse resin cements (groups VT and VC) showed significantly less penetration than those with self-adhesive resin cement (groups ST and SC) (P < 0.05). ST showed significantly lower penetration than SC (P < 0.05), that showed similar penetration with positive control (P > 0.05). VC showed minimal penetration during observed time of period (P < 0.05). Scanning electron microscope observations showed different interfacial characteristics among the groups.

Conclusion: Within the limitation of this study, etch-and-rinse resin cement showed less LPS penetration than self-adhesive resin cement on both ceramic and dentin surfaces.

Keywords: Ceramic; Dentin; Lipopolysaccharide penetration; Self-adhesive resin cement.