ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00971.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00972.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

The development of an adhesion system for bonding dental composites to dentin and enamel is reviewed. Building on findings concerning adhesion to enamel, a field pioneered by Dr. Michael Buonocore and others, Dr. R.L. Bowen and his colleagues at the Paffenbarger Research Center, National Institute of Standards and Technology, began addressing and solving problems associated with (1) silicate cements and unfilled resins, (2) bonding in an aqueous environment, and (3) the development of an adhesion system for both dentin and enamel that could withstand various stresses. Although commercial products based on this adhesion system are currently available in the dental materials marketplace, experimentation continues, focusing on the synthesis of potentially better component analogs, the optimization of the individual components, and on improved storage stability and ease of synthesis.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00973.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Five different dentin adhesives were evaluated under various experimental conditions (using different restorative materials, placement techniques, and specimen storage). A silver‐staining technique was used to detect microleakage. Pentra Bond II was less effective than Tenure in prevention of marginal leakage, but similar to Scotchbond 2 and Glum

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00974.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

A laboratory study was conducted to determine the shear bond strength to dentin of etched and silane‐treated Dicor castable ceramic glass using a resin cement and newer generation adhesive systems. scanning electron microscopy (SEW examinations were also completed to evaluate the failure sites. The mean shear bond strength of the control (resin cement only, no adhesive system) was 2.1 ± 1.2 MPa. The shear bond strength values determjned for the adhesive systems and resin cement are as follows: Prisma Universal Bond 2, 18.7 ± 2.9; XR Primer/XR Bond, 16.9 ± 6.4: Scotchbond 2, 15.8 ± 6.2; Tenure Solution. 15.4 ± 4.5; and Gluma, 14.8 ± 5.5 MPa. SEM examinations of the debonded specimens attached with prisms Universal Bond 2 and Tenure Solution showed a complex failure pattern with cohesive failure in the glass ceramic material and adhesive failure between the resin cement and the etched and silane‐treated glass surface. The debonding pattern of specimens attached with XR Primer/XR Bond. Scotchbond 2 and Gluma were primarily adhesive between the dentin and resin materials. The results of thfs study support the use of an adhesive system in conjunction with a resin cement for placement of Dim castable ceramic res

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00975.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Bleaching with 35 percent hydrogen peroxide causes enamel surface changes, which result in lower bond strengths of composite resin. Although a previous SEM study showed that home bleaching with 10 percent carbamide peroxide does not cause such surface changes, the results of our study indicate that carbamide peroxide bleaching reduces the shear bond strength of composite to etched enamel. Removal of surface enamel, however, restores bond strengths to normal levels.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00976.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

This study investigated the surface microhardness of five basing materials with four varnishes applied to them. Ten Plexiglass molds with 7‐mm diameter holes were prepared. Basing materials of Cavitec, Life, Ketac Bond, TimeLine, and Cavalite were placed in the molds to produce 20 samples each. Copalite, Universal, Contact, and Barrier varnishes were applied to the top and bottom surfaces of the base material samples at 1 hour and 24 hours. After air drying, the surface microhardness of the samples was tested with a Micromet II microhardness tester. The surface microhardness of all the basing materials tested was reduced when varnishes were applied to them. Contact and Barrier reduced surface microhardness value more than Copalite and Universa

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00977.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

The bond strengths of dentinal bonding systems to dentin and the microleakage at the dentinal bonding system to dentin interface are often determined in laboratory studies prior to the clinical evaluation of these systems. The shear bond strengths of some of the third generation dentinal bonding systems to dentin and the microleakage at the dentinal bonding system to dentin interface are discussed. In addition, the shear bond strengths of fluoride‐containing liners/bases and the fluoride release from these systems are evaluate

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00978.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00979.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY