摘要:

Phosphoric acid etching of dentin is critically reexamined in view of current adhesive resin development. Research and clinical experience both suggest that “total etch,” the simultaneous etching of dentin and enamel, is a rational protocol with many modern adhesive res

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00796.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.tb00795.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

This study investigated the shear bond strength of a new 4‐META adhesive cement (C&B‐Metabond) to dentin and Ni‐Cr‐Be alloy (Rexillium III). Fifteen human molar teeth had dentin bonding sites prepared by grinding away the enamel on a water‐cooled abrasive wheel to a 600 grit. Fifteen metal alloy specimens were cast, ground to a 600 grit, and air abraded with 50 micron alumina. The 4‐META cement was applied to the dentin and metal in accordance with the manufacturer's instructions. After 24 hours in water at 37° C, the shear bond strengths were recorded. The mean bond strength to dentin and the metal alloy was 20.1

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00797.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

A recently introduced porcelain repair system utilizing 4‐META (Etch‐Free Primer with C&B‐Metabond) was evaluated for bond strength to porcelain. This system purportedly eliminates hydrofluoric acid‐etching and silane pretreatment. Forty porcelain specimens were prepared and treated with the 4‐META repair system. A resin cylinder was bonded to the treated porcelain surface. Twenty of the specimens were tested after 24 hours while the other 20 were tested after thermocy‐cling (800 cycles at 6° C to 60° C). The mean bond strengths were: 24 hours 17.4 MPa (±4.8), thermocycled 19.1 MPa (±7). Cohesive failure of the porcelain occurred in all of the specimens, both the 24 hour and the thermocycled. These bond strengths compare favorably with or exceed those of other porcelain repair systems tested i

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00798.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Due to the stresses resulting from biomechanical loading forces exerted on the teeth (static, as in swallowing and clenching or cyclic, as in chewing), both enamel and dentin can chip or break away. This loss of tooth substance, which shall be termedAbfraction, is dependent on the magnitude, duration, direction, frequency, and location of the forces. These abfractive lesions are caused by flexure and ultimate material fatigue of susceptible teeth at locations away from the point of loading. Clinical observation of a variety of enamel and dentin lesions due to the shapes, sizes, loci, and frequency warrants a new and distinct classification.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00799.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Current methods for bonding composite resins rely upon the etching of enamel to attain a bond that is strong enough to resist polymerization shrinkage and decrease the amount of marginal microleakage. Previously, modification of cavity designs have been evaluated that have enhanced retention. However, all these cavity designs have utilized methods to increase the surface area of enamel to bond thus resulting in a stronger enamel bond. Thisin vifrostudy evaluated the effect of one cavity design modification when the restoration is placed entirely on cemental surfaces and relied on only cementum and dentin.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00800.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

All porcelain restorations, especially intra‐ and extracoronal restorations, have become an accepted treatment modality for the esthetic restoration of posterior teeth. One problem with these restorations is the limited ability to modify the porcelain when a proximal contact is not present or there is an open margin. Using a low‐fusing porcelain in a glazing oven, practitioners can easily accomplish such modifications during the try‐in and cementation appointment for porcelain inlays. This technique eliminates the need for returning the porcelain inlay to the laboratory for modification and a second patient visit to complete the restoration. This paper describes an in‐office procedure for modifying porcelain restorations and a scanning electron micrographic evaluation of the etched porcelain surface after using this modification te

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00801.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

In special cases, white enamel discoloration can be simulated using bonded resin materials. This paper describes a method of using bright white visible light‐polymerized resin sealant material as an enamel bonding agent, which is overlayed with composite resin to enhance wear resistance of the restoratio

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00802.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.tb00803.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

Glass ionomer restorative cement offers the clinician an alternative to bonded composite resin for restoration of certain lesions in primary teeth. This article details a step‐by‐step procedure for restoration of a smooth surface carious lesion in a primary incisor using an encapsulated glass ionomer restorative material and reviews advantages and limitations of the cement. A light‐hardened glass ionomer liner/base that has proven useful as an enamel and dentin restorative is also desc

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1991.tb00804.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY