ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00806.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Beautiful, healthy gingival tissue is achievable with full coverage restorations that are biologically compatible. The restorations must meet the following requirements: (1) respect for the marginal gingiva by proper preparation of the tooth and the use of a soft tissue model; (2) careful subgingival depth placement; (3) proper subgingival and supragingival contours of the temporary and final restorations; (4) healthy gingiva prior to placement of final restorations; (5) marginal integrity; and (6) polished bonding interface.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00807.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

The current challenge in adhesive dentistry is to develop dentin bonding systems that will reproducibly achieve high bond strengths similar to those obtained between resins and acid‐etched enamel. Some of the limitations of dentin as a bonding substrate are that it changes its structure as it is prepared deeper, it is difficult to dry, and its smear layer is weak. Further, it is difficult to avoid contaminating proximal boxes with blood. Such contamination lowers dentin bond strengths to very low values. Decontamination of such dentin must be done prior to resin placement. The forces of polymerization contraction depend, in part, on the shape of cavities and how they are filled. Bulk filling of class I cavities can lead to conditions in which the forces of polymerization contraction exceed dentin bond strength with some materials and locations. The future development of resin systems that do not shrink on polymerization would eliminate many current problems in adhesive dentistr

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00808.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

The benefits to the patient of the removal of tooth deposits is well documented. Should such removal provide the additional effect of “whitening” the tooth surface, an additional cosmetic benefit would be provided. This study documents that a Citroxain‐containing dentifrice provides all of these ben

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00809.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

An analysis by scanning electron microscopy was undertaken to investigate the effects of bleaching on enamel‐cementum surface morphology. Teeth were investigated in five groups: control; vital bleached for 5, 15, and 30 days; and 37 percent phosphoric acid gel etched for 20 seconds. Only the gel‐etched group exhibited etching patterns. Shade change in vital bleached teeth was noted in the group vital bleached for 30 d

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00810.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

A case is presented that focuses on the diagnosis, treatment plan, and preparation for reshaping tooth contours with direct resin materials.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00811.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

This article reviews six dentin bonding agents with regard to composition of the individual components of each of the systems. Adhesion mechanisms are discussed relative to the chemical compounds mediating the bond. Adjunctly, inspection of the bonding sites between the different adhesives and human dentin by scanning electron microscopy elucidates the bonds formed as far as detail reproduction as an indicator for wetting ability or mechanical interlocking.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00812.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

A preliminary study and hypothesis of the etiology of root caries is presented with appropriate data suggesting that biodental engineering factors (BEF) be introduced into the equation that is generally accepted in the formation of all caries. Principally, because of the rapid progression and location of root caries, BEF in addition to bacterial plaque and suitable substrate contribute to the development of these unique lesions. The dominant and most significant factors recognized by bioengineers are tooth flexure, stress concentration, stress corrosion, and piezoelectricity. All of these factors interplay during the dynamics of occlusal activity causing the loss of tooth substance. A new and revised model is being presented that provides a basis for the etiology of root caries.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00813.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.tb00814.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY