Morphological Characteristics of Self-Etch Adhesives Bonding to Non-Carious Cervical Sclerotic Dentin

Abstract

The objective of this study was to observe the morphological characteristics of self-etch adhesives bonding to non-carious cervical sclerotic dentin using Confocal Laser Scanning Microscope (CLSM). Thirty human premolars with buccal non-carious cervical sclerotic lesions were selected, and artificially prepared wedge-shaped lesion was made in lingual surface of this tooth. The dentin lesions were bonding with one-step self-etch adhesive (XENO III and G-Bond Plus) and two-step self-etch adhesive (Clearfil SE Bond) according to the manufacturer's instruction, respectively. The bonding adhesive component was labeled with 0.1 wt.% Rhodamine B Isothiocyanate. The hybrid layer and resin tags of resin-dentin interface were observed using CLSM. Statistical analysis showed that there were significant differences between non-carious sclerotic dentin and normal dentin in the thickness of hybrid layer and length of resin tags (p < 0.05). The self-etch adhesives significantly affected the hybrid layer thickness and resin tags length between resin and normal dentin interface (p < 0.05), while for resin-sclerotic dentin interface, no significant difference was observed (p > 0.05). The sclerotic dentin presented thinner hybrid layer and shorter resin tags than the normal dentin. There were similar morphological characteristics of resin-sclerotic dentin interface using one-step and two-step self-etch adhesives.

An 18‐Month Randomized Controlled Clinical Trial Evaluating the Clinical Success of IPS e.max Conventional Crowns and Endocrowns in Extensively Restored Molars

“…Therefore, the clinical decision between an endocrown or conventional crown depends on the selected fabrication method to ensure it achieves an optimal fit, in addition to other factors like pulp chamber depth and operative steps. Mostafavi et al 2022), and quality and quantity of the remaining dentine substrate (Yu and Wang 2014; Kwong 2002; Karakaya et al 2008).…”

“…This conclusion is based on the Location of Failure, in which the adhesive failure was observed at the dentin-cement interface, indicating a challenge in achieving adequate adhesion to the available substrate. Multiple studies (Yu and Wang 2014;Kwong 2002;Karakaya et al 2008) have consistently demonstrated that bond strengths to sclerotic dentin are significantly lower than to normal dentin, with morphological analyses revealing thinner hybrid layers and shorter resin tags. Also, it was reported that bond strengths to pulp chamber floor dentin are significantly lower than to other regions of the tooth according to several studies (Akagawa et al 2002;Kaptan et al 2019).…”

An 18‐Month Randomized Controlled Clinical Trial Evaluating the Clinical Success of IPS e.max Conventional Crowns and Endocrowns in Extensively Restored Molars

“…Therefore, the clinical decision between an endocrown or conventional crown depends on the selected fabrication method to ensure it achieves an optimal fit, in addition to other factors like pulp chamber depth and operative steps. Mostafavi et al 2022), and quality and quantity of the remaining dentine substrate (Yu and Wang 2014; Kwong 2002; Karakaya et al 2008).…”

“…This conclusion is based on the Location of Failure, in which the adhesive failure was observed at the dentin-cement interface, indicating a challenge in achieving adequate adhesion to the available substrate. Multiple studies (Yu and Wang 2014;Kwong 2002;Karakaya et al 2008) have consistently demonstrated that bond strengths to sclerotic dentin are significantly lower than to normal dentin, with morphological analyses revealing thinner hybrid layers and shorter resin tags. Also, it was reported that bond strengths to pulp chamber floor dentin are significantly lower than to other regions of the tooth according to several studies (Akagawa et al 2002;Kaptan et al 2019).…”

An 18‐Month Randomized Controlled Clinical Trial Evaluating the Clinical Success of IPS e.max Conventional Crowns and Endocrowns in Extensively Restored Molars

“…Therefore, the clinical decision between an endocrown or conventional crown depends on the selected fabrication method to ensure it achieves an optimal fit, in addition to other factors like pulp chamber depth and operative steps. Mostafavi et al 2022), and quality and quantity of the remaining dentine substrate (Yu and Wang 2014; Kwong 2002; Karakaya et al 2008).…”

“…This conclusion is based on the Location of Failure, in which the adhesive failure was observed at the dentin-cement interface, indicating a challenge in achieving adequate adhesion to the available substrate. Multiple studies (Yu and Wang 2014;Kwong 2002;Karakaya et al 2008) have consistently demonstrated that bond strengths to sclerotic dentin are significantly lower than to normal dentin, with morphological analyses revealing thinner hybrid layers and shorter resin tags. Also, it was reported that bond strengths to pulp chamber floor dentin are significantly lower than to other regions of the tooth according to several studies (Akagawa et al 2002;Kaptan et al 2019).…”

An 18‐Month Randomized Controlled Clinical Trial Evaluating the Clinical Success of IPS e.max Conventional Crowns and Endocrowns in Extensively Restored Molars

“…Therefore, the clinical decision between an endocrown or conventional crown depends on the selected fabrication method to ensure it achieves an optimal fit, in addition to other factors like pulp chamber depth and operative steps. Mostafavi et al 2022), and quality and quantity of the remaining dentine substrate (Yu and Wang 2014; Kwong 2002; Karakaya et al 2008).…”

“…This conclusion is based on the Location of Failure, in which the adhesive failure was observed at the dentin-cement interface, indicating a challenge in achieving adequate adhesion to the available substrate. Multiple studies (Yu and Wang 2014;Kwong 2002;Karakaya et al 2008) have consistently demonstrated that bond strengths to sclerotic dentin are significantly lower than to normal dentin, with morphological analyses revealing thinner hybrid layers and shorter resin tags. Also, it was reported that bond strengths to pulp chamber floor dentin are significantly lower than to other regions of the tooth according to several studies (Akagawa et al 2002;Kaptan et al 2019).…”