Results: 3070

Immunohistochemical analysis of FoxP3+ regulatory T cells in lower lip squamous cell carcinomas

Braz. oral res. (Online); 30 (1), 2016
Abstract: The aim of this study was to determine the number of FoxP3+ regulatory T (Treg) cells in the microenvironment of lower lip squamous cell carcinomas (LLSCCs) and to correlate the findings with clinicopathological parameters (tumor size/extent, regional lymph node metastasis, clinical stage, and ...

Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols

Braz. oral res. (Online); 30 (1), 2016
Abstract: Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but i...

Root filling bond strength using reciprocating file-matched single-cones with different sealers

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of the present study was to evaluate the bond strength (BS) of root canal fillings to root dentin using the reciprocating file-matched single-cone or lateral compaction techniques with resin-based and calcium-silicate-based sealers. Maxillary canine roots were prepared and filled using o...

Volume of sealer in the apical region of teeth filled by different techniques: a micro-CT analysis

Braz. oral res. (Online); 30 (1), 2016
Abstract The volume of sealer in the apical 1 mm of teeth filled using different techniques was evaluated by micro-commuted tomography (micro-CT). Sixty-four maxillary central incisors were prepared using NiTi rotary instruments. Teeth were randomly distributed into four groups according to root canal se...

Effect of root canal filling techniques on the bond strength of epoxy resin-based sealers

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study was to evaluate the effects of different root canal filling techniques on the bond strength of epoxy resin-based sealers. Sixty single-rooted canines were prepared using ProTaper (F5) and divided into the following groups based on the root filling technique: Lateral Compact...

Effect of filling technique on the bond strength of methacrylate and silorane-based composite restorations

Braz. oral res. (Online); 30 (1), 2016
Abstract The bond strength of methacrylate (Z350, 3M ESPE) and silorane (P90, 3M ESPE) restorations, using different cavity filling techniques, was investigated. Cavities (6 × 3 × 3) in bovine teeth were filled using bulk, oblique, or horizontal increments. A push-out test was carried out after 24 h. D...

Erosion and abrasion-inhibiting in situ effect of the Euclea natalensis plant of African regions

Braz. oral res. (Online); 30 (1), 2016
Abstract This study evaluated the effect of Euclea natalensis gel on the reduction of erosive wear with or without abrasion, in enamel and dentin. During two five-day experimental crossover phases, volunteers (n = 10) wore palatal devices containing human enamel and dentin blocks (E = 8 and D = 8). The g...

Enamel and dentine demineralization by a combination of starch and sucrose in a biofilm - caries model

Braz. oral res. (Online); 30 (1), 2016
Abstract Sucrose is the most cariogenic dietary carbohydrate and starch is considered non-cariogenic for enamel and moderately cariogenic for dentine. However, the cariogenicity of the combination of starch and sucrose remains unclear. The aim of this study was to evaluate the effect of this combination ...

Six-month color change and water sorption of 9 new-generation flowable composites in 6 staining solutions

Braz. oral res. (Online); 30 (1), 2016
Abstract Color match and water sorption are two factors that affect restorative materials. Discoloration is essential in the lifespan of restorations. The aim of this study was to evaluate color change and water sorption of nine flowable composites at multiple time points over 6 months. 60 samples of eac...

Drying protocol influence on the bond strength and apical sealing of three different endodontic sealers

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study was to evaluate the influence of drying protocols (DP) on the apical sealing (AS) and on the bond strength (BS) of teeth filled with different sealers. The root canals of one hundred and fifty-six roots of maxillary canines were prepared with Reciproc rotary files (R50). Th...