Bond strengths to superficial, intermediate and deep dentin in vivo with four dentin bonding systems.
The shear bond strength of four dentin bonding systems which remove or modify the smear layer were measured in vivo in dog canine and molar teeth as a function of dentin depth. Dentin bond strengths were higher with cuspid teeth compared to molar teeth. Most bonding systems gave higher bonds to superficial dentin and progressively lower bond strengths deeper dentin. The highest bond strengths were obtained with Clearfil Liner Bond, followed by Superbond C&B, Scotchbond 2 and Tenure. The former two bonding systems achieved shear bond strengths to cuspids that were > 10 MPa regardless of dentin depth while the latter two systems produced bond strengths < 10 MPa. In molars, the same ranking of bonding systems was noted but the value that separated the high from the low bonds was 5 MPa.
Pashley
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Department of Oral Diagnosis and Patient Services, Medical College of Georgia, Augusta.
Tao
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Matthews
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Pashley
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DH
D000704:Analysis of Variance; D000818:Animals; D001896:Boron Compounds; D003188:Composite Resins; D003481:Cuspid; D001840:Dental Bonding; D003804:Dentin / Q000033:anatomy & histology*; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents; D004285:Dogs; D005260:Female; D008297:Male; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates; D008963:Molar; D019279:Resin Cements; D013718:Tensile Strength
D001896:Boron Compounds; C029849:Clearfil Bonding Agent; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; C067788:scotchbond 2; C074811:Tenure adhesive; C049495:Super-bond