Effects of metallic or translucent matrices for Class II composite restorations: 4-year clinical follow-up findings.

This study evaluated the performance of composite restorations placed with two matrix and wedge systems 4 years after placement. In a split-mouth design, 23 patients were selected and received at least two class II restorations, one with metallic matrix and wooden wedge and the other with polyester matrix and reflective wedge. One dentist placed the 109 restorations, and all cavities were restored using Single Bond and P-60 (3M ESPE) according to the manufacturer's instructions.

Stem cells: therapeutic potential in dentistry.

Aim: The aim of this paper is to present a review and discussion of the current status of stem cell research with regard to tooth generation.

Background: Stem cells have been isolated from the pulp tissue of both deciduous and permanent teeth as well as from the periodontal ligament. Dental pulp stem cells demonstrate the capacity to form a dentin pulp-like complex in immunocompromised mice.

Buccal cells submitted to three different storage conditions before DNA extraction.

This study evaluated quantitatively and qualitatively the effect of the storage time of samples before the application of the cell lysis solution (CLS) for extracting DNA from buccal cells (BC). BC from the upper and lower gutter region were collected from 5 volunteers using special cytobrushes (Gentra), totaling 3 collections for each individual. In the control group (n=10), CLS was applied soon after BC collection.

Surface roughness and enamel loss with two microabrasion techniques.

Aim: The aim of this study was to evaluate and compare the surface roughness and enamel loss produced by two microabrasion techniques.

Methods And Materials: Bovine teeth were selected and an area was delimited for microabrasion techniques. Surface roughness was determined before and after treatment using a digital profilometer.

Class II composite restorations with metallic and translucent matrices: 2-year follow-up findings.

Objective: The aim of this randomized, clinical study was to evaluate the performance of composite restorations placed with two matrix and wedge systems after a 2-year follow-up.

Methods: Twenty-three patients were selected, and received at least two Class II restorations, one with metallic matrix and wooden wedge and other with polyester matrix and reflective wedge. One dentist placed all the 109 restorations.