Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Matrix Bands”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 307 records · Page 17Linked to original sources
PubMedDate not supplied

Dental amalgam: success or failure?

A review of recent literature suggests that reasons for amalgam failure can generally be identified and avoided. These include: retentive failure, marginal breakdown, fracture of the tooth or restoration, reasons for sensitivity, poor surface characteristics, and contributions to periodontal disease. Materials themselves are least often the source of problems; rather, most of the failures can be attributed to lack of attention to detail in cavity preparation and handling of the materials.

Dental Amalgam↗
PubMed1992

Effect of matrix systems and polymerization techniques on microleakage of Class II resin composite restorations.

This study investigated the effect of different sized light curing tips (2 mm and 11 mm) with curing techniques associated with different matrix systems (Mylar with reflective wedge and metal with wooden wedge) on microleakage of a posterior resin composite material (P-50) placed using a bonding agent (Scotchbond 2). Eighty Class II mesial and distal slot preparations (40 with enamel gingival margins and 40 with dentin gingival margins) were randomly divided into four equal groups: 1) metal matrix, large tip; 2) Mylar matrix, light emitting wedge, large tip; 3) Mylar matrix, light emitting wedge, small tip; 4) metal matrix, small tip. Three-way ANOVA indicated no statistical differences among groups using small and large curing tips. The results showed significantly more leakage (alpha = 0.05) in the dentin gingival cavosurface margin groups than the enamel cavosurface margin groups. The results also showed significantly greater leakage in the polymerization procedures associated with the metal matrix groups (alpha = 0.05) compared to polymerization procedures associated with the Mylar matrix groups.

Analysis of Variance↗
PubMed1992

Composite resin veneers: a new technique.

A new technique for the fabrication of composite resin direct veneers is presented. In this technique, a transparent acrylic resin matrix is fabricated before preparation of the facial surface of the tooth, to allow the adequate reproduction of contour, shape, and surface texture originally exhibited by the tooth. Advantages, as well as limitations, of the procedure are also presented.

Acrylic Resins↗
PubMed2004

Marginal integrity of self- and total-etching adhesives in two different application protocols.

PURPOSE: The aim of this study was to evaluate the marginal integrity of four self-etching adhesives (Prompt L-Pop III, Resulcin Aqua Prime & MonoBond N, AC Bond, AC Bond + Desensitizer) and three total-etch adhesives (Opti-Bond FL, Excite, Gluma Comfort Bond) in two different application protocols. MATERIALS AND METHODS: Standardized MOD cavities (n = 40) were prepared in 280 extracted human teeth (one cervical margin in cementum, one in enamel). In one application protocol, the adhesive was applied prior to placement of the Tofflemire matrix (n = 20); in the other, the metal matrix was placed first (n = 20). Light curing was carried out from the occlusal aspect. After thermocycling (5000 times, 5 degrees C and 55 degrees C), specimens were immersed in 2% methylene blue for 10 s. Then the median percentages of dye-penetrated margins (surface analysis) were determined separately for the cervical cementum, cervical enamel, and lateral enamel margins of the proximal boxes. RESULTS: At the cervical cementum margins, statistically significantly worse results were obtained for all adhesives when the matrix system was placed prior to application of the adhesive. In the cervical enamel margins, OptiBond FL, Gluma Comfort Bond, and Prompt L-Pop III performed significantly better when the adhesive was applied prior to the matrix. On lateral enamel margins, only OptiBond FL and Resulcin Aqua Prime showed significantly less dye penetration if the matrix was placed first. CONCLUSION: Most of the total-etch materials produced marginal integrity significantly superior to that of the majority of the self-etching materials. Due to a significant influence of the application protocol on marginal integrity, it is strongly recommended to apply the adhesive system before placement of the matrix.

Benzoates↗
PubMed2004

Direct posterior resin composite restorations: considerations on finishing/polishing. Clinical procedures.

In spite of advances in materials and techniques for direct posterior composite restorations, some problems remain, such as occlusal wear rate, marginal breakdown, and marked operator technique sensitivity. To enhance longevity of these restorations, finishing and polishing procedures are commonly indicated. Although these procedures offer advantages, they also have some drawbacks, such as higher marginal breakdown and increased susceptibility to wear following finishing procedures. Faced with the disadvantages brought by finishing and polishing procedures, it seems reasonable to try and find a technique to omit them. This paper presents clinical cases exhibiting a restorative technique that prevents, or at least reduces, the need for instrumentation of the restoration. In cases when finishing procedures are necessary, the restorations should be sealed with a specific resinous agent to impart new strength to the instrumented surface and improve marginal integrity. In addition, the suggested technique promotes a better occlusal anatomy than that attained with the traditional technique.

Acid Etching, Dental↗
PubMedDate not supplied

Technique on restoring sub-gingival cervical lesion.

This article outlines an atraumatic isolation approach and a conservative instrumentation sequence, followed by use of a highly viscous, rapid-setting, capsulated glass ionomer cement to manage a difficult deep proximal-cervical Class V lesion.

Aged↗
PubMedDate not supplied

Polytetrafluoroethylene (PTFE) tape as a matrix in operative dentistry.

A method for using PTFE tape as a matrix to prevent the etching and/or bonding of adjacent tooth structure was presented. This technique is simple, quick and inexpensive. PFTE tape in the form of plumber's tape is readily available at any hardware store. Despite manufacturers' varying thicknesses of PTFE tape, it can be stretched, yielding a matrix thinner than other matrix systems. The tape will also adhere and conform to adjacent tooth structure, offering the operator an unhindered access to perform sculpting of the restorative material.

Composite Resins↗
PubMedDate not supplied

Establishing proximal contacts with pre-polymerized composite inserts.

A technique of restoring Class II posterior restorations with resin-based composite and a pre-polymerized composite insert was presented. This technique is intended to aid the practitioner in obtaining tight, broad, proximal contacts without having to purchase special instruments or materials. This method is not time-consuming, nor technically difficult. Another benefit of this technique is that it reduces the total amount of volumetric shrinkage of restorative material inside the cavity preparation, as the composite insert is pre-polymerized before placement.

Adult↗
PubMed2005

Building custom shells for conservative tooth reconstruction: an elegant strategy.

This article, focused around case presentations, follows the natural progression/exploration of a single idea about dealing with the Class II (approximal lesion) composite restoration. The gradual development of this idea and the integration of a concept from one case to the next may have certain educational value. Hopefully it will show the potential for further experimentation and inspire a fresh mentality in using and handling the main line of conservative restorative materials today, ie, resin composites.

Bicuspid↗