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...
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Online Access: | http://dx.doi.org/10.1155/2021/5578539 |
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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 |
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