The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study

Objective. The aim of this study was to monitor the behavior of interfacial gaps formed under different bonded polymeric restorations before and after thermocycling (TC), using swept-source optical coherence tomography (SS-OCT) and confirming the obtained findings with confocal laser scanning micros...

Full description

Bibliographic Details
Main Authors: T. A. Bakhsh, A. Turkistani
Format: Article
Language:English
Published: Hindawi Limited 2021-01-01
Series:BioMed Research International
Online Access:http://dx.doi.org/10.1155/2021/5578539
id doaj-67f3925ebcbe433caafe21029590bd8a
record_format Article
spelling doaj-67f3925ebcbe433caafe21029590bd8a2021-06-21T02:25:07ZengHindawi LimitedBioMed Research International2314-61412021-01-01202110.1155/2021/5578539The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT StudyT. A. Bakhsh0A. Turkistani1Department of Restorative DentistryDepartment of Restorative DentistryObjective. The aim of this study was to monitor the behavior of interfacial gaps formed under different bonded polymeric restorations before and after thermocycling (TC), using swept-source optical coherence tomography (SS-OCT) and confirming the obtained findings with confocal laser scanning microscopy (CLSM). Materials and Methods. Cylindrical class I cavities were prepared in twenty noncarious human premolar teeth (1.5 mm depth×3.5 mm diameter) and divided randomly into two groups: TS and SN, according to the adhesive system (n=10). In the TS group, one-step self-etch adhesive Clearfil Tri-S Bond Plus (Kuraray Noritake Dental, Japan) was used, followed by composite restoration using Estelite Sigma Quick (Tokuyama Dental, Japan). In the SN group, the cavities were restored with the two-step self-etch/composite silorane-based resin restoration system (3M ESPE, USA). All specimens were restored in bulk filling technique and cured in accordance with the manufacturers’ instructions. Both groups were imaged under SS-OCT after 24 h and recorded as controls. Then, each group was subjected to thermal challenge using the TC machine (5–55°C) and B-scans were recorded at different TC intervals (2600, 5200, and 10000). In order to confirm the SS-OCT findings, additional specimens were prepared, scanned, and sectioned for CLSM observation. Results. B-scans demonstrated white clusters at the tooth-resin interface that corresponded to the gap location on CLSM images. The TS group showed significantly less gap formation than the SN group before and after TC (p<0.001). Conclusions. An optimal composite adaptation can be achieved when the bonded restoration comprises a combination of an adhesive containing 10-MDP monomer and a considerable highly filled composite.http://dx.doi.org/10.1155/2021/5578539
collection DOAJ
language English
format Article
sources DOAJ
author T. A. Bakhsh
A. Turkistani
spellingShingle T. A. Bakhsh
A. Turkistani
The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
BioMed Research International
author_facet T. A. Bakhsh
A. Turkistani
author_sort T. A. Bakhsh
title The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
title_short The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
title_full The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
title_fullStr The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
title_full_unstemmed The Effect of Thermocycling on Interfacial Bonding Stability of Self-Etch Adhesives: OCT Study
title_sort effect of thermocycling on interfacial bonding stability of self-etch adhesives: oct study
publisher Hindawi Limited
series BioMed Research International
issn 2314-6141
publishDate 2021-01-01
description Objective. The aim of this study was to monitor the behavior of interfacial gaps formed under different bonded polymeric restorations before and after thermocycling (TC), using swept-source optical coherence tomography (SS-OCT) and confirming the obtained findings with confocal laser scanning microscopy (CLSM). Materials and Methods. Cylindrical class I cavities were prepared in twenty noncarious human premolar teeth (1.5 mm depth×3.5 mm diameter) and divided randomly into two groups: TS and SN, according to the adhesive system (n=10). In the TS group, one-step self-etch adhesive Clearfil Tri-S Bond Plus (Kuraray Noritake Dental, Japan) was used, followed by composite restoration using Estelite Sigma Quick (Tokuyama Dental, Japan). In the SN group, the cavities were restored with the two-step self-etch/composite silorane-based resin restoration system (3M ESPE, USA). All specimens were restored in bulk filling technique and cured in accordance with the manufacturers’ instructions. Both groups were imaged under SS-OCT after 24 h and recorded as controls. Then, each group was subjected to thermal challenge using the TC machine (5–55°C) and B-scans were recorded at different TC intervals (2600, 5200, and 10000). In order to confirm the SS-OCT findings, additional specimens were prepared, scanned, and sectioned for CLSM observation. Results. B-scans demonstrated white clusters at the tooth-resin interface that corresponded to the gap location on CLSM images. The TS group showed significantly less gap formation than the SN group before and after TC (p<0.001). Conclusions. An optimal composite adaptation can be achieved when the bonded restoration comprises a combination of an adhesive containing 10-MDP monomer and a considerable highly filled composite.
url http://dx.doi.org/10.1155/2021/5578539
work_keys_str_mv AT tabakhsh theeffectofthermocyclingoninterfacialbondingstabilityofselfetchadhesivesoctstudy
AT aturkistani theeffectofthermocyclingoninterfacialbondingstabilityofselfetchadhesivesoctstudy
AT tabakhsh effectofthermocyclingoninterfacialbondingstabilityofselfetchadhesivesoctstudy
AT aturkistani effectofthermocyclingoninterfacialbondingstabilityofselfetchadhesivesoctstudy
_version_ 1721369233905942528