Interfacial Evaluation of CAD/CAM Resin Inlays on the Cavity Floor Using Swept-source Optical Coherence Tomography

Seung Hoon Han, Yasushi Shimada, Alireza Sadr, Junji Tagami, Sung Eun Yang

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The first objective of this study was to determine whether the luting material used for computer-aided design and computer-aided manufacture resin nanoceramic inlays affected interfacial adaptation. The second objective was to investigate whether application of a universal dentin adhesive before cementation affected interfacial adaptation. The final objective was to compare the inlay-side and dentin-side interfaces in the cement space. Methods and Materials: Seventy-four class I cavities were prepared on extracted human third molars. Cavities were optically scanned, and resin nanoceramic inlays were milled using Lava Ultimate blocks (3M ESPE). For the control groups, the fabricated inlays were cemented using Panavia V5 (Kuraray Noritake) or FujiCem 2 (GC). For the experimental groups, the teeth were randomly divided into groups I and II. Group I contained four subgroups using different luting materials; in all subgroups, the inlays were cemented and dual cured without pretreatment. Group II contained six subgroups in which inlays were cemented and dual cured after application of a universal dentin adhesive. After thermocycling, interfacial adaptation was measured using swept-source optical coherence tomography (SS-OCT) imaging and statistically compared among groups. Results: Interfacial adaptation was different depending on the luting material used (p,0.05). After application of a universal adhesive, some subgroups showed improved interfacial adaptation (p,0.05). In the comparison of inlay-side and dentin-side interfaces, no difference was found in interfacial adaptation (p.0.05). Conclusions: Interfacial adaptation for resin nanoceramic inlays differed with luting material. For some self-adhesive cements, application of a universal adhesive before cementation improved interfacial adaptation.

Original languageEnglish
Pages (from-to)664-676
Number of pages13
JournalOperative dentistry
Volume45
Issue number6
DOIs
Publication statusPublished - Dec 2020

ASJC Scopus subject areas

  • Dentistry(all)

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