Adhesion to dentin with and without smear layer under varying degrees of wetness.
The bond strengths of glass ionomer cements to prepared dentin ranged between 2.1 and 4.7 MPa for all test conditions and did not appear to be adversely affected by the presence of fluid under physiologic pressure or by the presence or absence of a smear layer. On the other hand, the resin dentin adhesive was adversely affected by the presence of moisture (1 +/- 1.3 MPa when the tubules were full of fluid and under pressure; 9.4 +/- 10.6 MPa when the tubules were full of fluid but not under pressure; and 18.3 +/- 7.6 MPa when the tubules were empty.
Mitchem
J C
JC
Department of Dental Materials Science, Oregon Health Sciences University, School of Dentistry, Portland.
Gronas
D G
DG
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D000269:Adhesives / Q000737:chemistry*; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods; D003738:Dental Cements / Q000737:chemistry; D003782:Dental Pulp / Q000502:physiology; D003799:Dental Stress Analysis; D003804:Dentin / Q000502:physiology / Q000648:ultrastructure; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D011312:Pressure; D019279:Resin Cements; D016369:Smear Layer; D013314:Stress, Mechanical; D014867:Water
D000180:Acrylic Resins; D000269:Adhesives; D003188:Composite Resins; D003738:Dental Cements; D005899:Glass Ionomer Cements; D019279:Resin Cements; D014867:Water; C048711:P-30 composite resin; C006903:carbopol 940; C041330:Scotchbond