Bond strength and Interface characterization of different multimode adhesives to dentin using different tools
Eman Nasser Ahmed Diab;
Abstract
This in vitro study was performed to evaluate the effect of, different tools and storage time on the bond strength and interface characterization of different multimode adhesives.
A total of 240 bovine mandibular permanent incisors were used for SBS testing.The labial surfaces were wet ground on a lab trimmer to expose a flat dentin surface approximately 6-8 mm in diameter, which is sufficient for SBS testingref.The prepared surfaces were then placed on double-faced adhesive tapes fixed on a glass slab. Polyvinyl chloride rings of 22mm diameter were placed on the double-faced adhesive tapes surrounding the tooth. Fast-set chemical cured acrylic resin was poured inside each ring and left to harden.The specimens were randomly divided into three main groups according to type of adhesive used (n= 80) and each group was further divided into four groups according to tool used (n=20) (600 grit silicon carbide paper, fine finishing stone, medium finishing stone, 245 carbide bur ). Each group was further divided into two subgroups (n =10) according to the storage time (24 hours and 6 months storage).Theuniversal testing machine was used for the evaluatin of bond strength.
Shear bond strength results showed that Tools type and adhesive had a significant effect on the shear bond strength (P=0.0001). On the other hand the water storage had no significant effect on the bond strength.(P=185).
Resin/dentin interfaces were observed using SEM operated at 30 kV and photographs were taken at a magnification of 1500x.
Under the circumstances of this study, the following conclusions could be suggested:-
1. Chemical formulation of various adhesives has no statistically significant effect on the bonding profile.
2. The storage time insignificantly affected the bonding profile.
3. Abrasive modality for dentin substrate directly affected the bonding status than cutting did.
4. Screening illustration for the resin dentin interface seems to be highly beneficial for dentin infrastructure surface configuration.
A total of 240 bovine mandibular permanent incisors were used for SBS testing.The labial surfaces were wet ground on a lab trimmer to expose a flat dentin surface approximately 6-8 mm in diameter, which is sufficient for SBS testingref.The prepared surfaces were then placed on double-faced adhesive tapes fixed on a glass slab. Polyvinyl chloride rings of 22mm diameter were placed on the double-faced adhesive tapes surrounding the tooth. Fast-set chemical cured acrylic resin was poured inside each ring and left to harden.The specimens were randomly divided into three main groups according to type of adhesive used (n= 80) and each group was further divided into four groups according to tool used (n=20) (600 grit silicon carbide paper, fine finishing stone, medium finishing stone, 245 carbide bur ). Each group was further divided into two subgroups (n =10) according to the storage time (24 hours and 6 months storage).Theuniversal testing machine was used for the evaluatin of bond strength.
Shear bond strength results showed that Tools type and adhesive had a significant effect on the shear bond strength (P=0.0001). On the other hand the water storage had no significant effect on the bond strength.(P=185).
Resin/dentin interfaces were observed using SEM operated at 30 kV and photographs were taken at a magnification of 1500x.
Under the circumstances of this study, the following conclusions could be suggested:-
1. Chemical formulation of various adhesives has no statistically significant effect on the bonding profile.
2. The storage time insignificantly affected the bonding profile.
3. Abrasive modality for dentin substrate directly affected the bonding status than cutting did.
4. Screening illustration for the resin dentin interface seems to be highly beneficial for dentin infrastructure surface configuration.
Other data
| Title | Bond strength and Interface characterization of different multimode adhesives to dentin using different tools | Other Titles | قوة الربط للمواد اللاصقة متعددة المعالجة والسطح البيني بين العاج السني واللاصق الراتنجي للعاج السني باستخدام أدوات مختلفة | Authors | Eman Nasser Ahmed Diab | Issue Date | 2015 |
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