ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00692.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Selection of appropriate finishing and polishing devices is critical to the optimal appearance and longevity of composite resin restoratives. This report compares the effectiveness of three specific finishing and polishing systems when used to prepare the surfaces of composite restorative materials provided by the respective manufacturers. Profilometer surface roughness analyses were conducted at two separate laboratories to cross‐correlate numerical smoothness data in this study. Statistically significant differences in mean surface roughness were found between various finishing system/composite resin pairings. Surprisingly, a hybrid composite resin finished and polished with its respective finishing/polishing system gave a significantly smoother surface than a microfill composite surface prepared with its corresponding sequentially coated abrasive disc system. This finding was corroborated at a second site using a separate methodology for profilometer analysi

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00693.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

The bite‐forming technique of posterior composite restoration is presented. Before preparation, the tooth surface is coated with a separating varnish. The occlusal anatomy of self‐cured composite is bite formed by bare opposing teeth. Subsequent finishing is considerably simplified by the ability to peel excess composite from the varnished tooth surface. Finishing and detailing are further simplified by use of top‐cut and top‐safe superfine diamond points. A “free matrix” is used for Class II r

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00694.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Indirect porcelain veneers are often the ideal restoration for intrinsically stained teeth. This article details a step‐by‐step procedure for esthetically restoring discolored teeth. Porcelain laminate veneers are often indicated when teeth bleaching or direct composite bonding procedures cannot provide the desired esthetic result. Veneers are more appealing to many patients than full coverage crowns because of the more conservative tooth preparation required. If technique details are followed meticulously and cases are appropriately selected, porcelain veneers are not only durable but also promote marvelous gingival health and may be the most esthetic anterior dental restorat

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00695.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Thermocycling is widely used in the evaluation of dentin bonding agents. The purpose of this study was to determine the effect of increasing thermocycling times on the shear bond strength of composite resin to dentin using a NTG‐GMA/BPDM‐type bonding agent. Fifty human molar teeth were ground fiat on the buccal surface into dentin (600 grit). Ten specimens were prepared for each thermocycling group of 100,500,1000,2000, and 4000 cycles. The adhesive agent was applied to the dentin according to the manufacturer's instructions. A cyclindrical‐shaped matrix was used to form the composite resin that was light cured to the treated dentin surface for 60 seconds. Thermocycling was started after 24 hours of storage in deionized water at 37°C. Shear bond strengths were determined with an Instron universal testing machine at a cross‐head speed of 0.5 mm per minute. The bond strengths in megapascals (MPa) were: 100 cycles 18.1 (± 5.2) MPa, 500 cycles 19.4 (± 4.0) MPa, 1000 cycles 16.5 (± 2.9), 2000 cycles 14.6 (± 5.1), and 4000 cycles 19.9 (± 3.2) MPa. When this data was subjected to an ANOVA, no significant difference was found betwe

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00696.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

The purpose of this scanning electron microscope study was to observe the interface between dentin and amalgam utilizing various adhesive resin cements. The adhesive resin materials used in this study were Imperva Dual, Geristore, and Panavia. The scanning electron micrographs revealed that bonds were established between amalgam, adhesive resins, and dentin.

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00697.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Compared to full crown temporization, direct autocured resin provisional technique for intracoronal onlay preparations is more complicated and less predictable. Clinical concerns include possible pulpal irritation, extra chair time for contouring proximal and marginal excess, and a critically short time constraint to remove the curing resin in the “rubbery stage” to avoid distortion or “locking” into the preparation. A two‐step direct technique using two new light‐cured provisional resins addresses these problems. First, a light‐cured, elastic resin is condensed against the internal preparation walls and confined within a wedged metal matrix band. Then, using a clear template matrix, the elastic foundation is overlaid with a strong and esthetic light‐cured pr

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00698.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Thisin vitrostudy investigates the use of reciprocal‐action instrumentation for polishing composite resin restorative materials. Electron photomicrographs were made of surfaces of a microfilled and a hybrid composite resin restorative material polished by various reciprocal‐action polishing procedures, including several types of polishing pastes used with nonabrasive plastic tips. The best polish on the microfilled composite resin restorative material tested was produced by ending with 3‐μ diamond polishing paste. The best polish on the hybrid composite resin restorative material tested was produced by ending with 0.5‐μ diamond polishing paste. The surfaces produced were comparable to those produced by polish

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00699.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00700.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:1496-4155    

DOI:10.1111/j.1708-8240.1992.tb00704.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY