The composite posterior and sylvian gyri of the canine temporal cortex show cytoarchitectonic features of poorly differentiated isocortex. Quantitative evaluation of connections examined with retrogradely transported fluorescent tracers indicated that both gyri received strong thalamic projections from the medial geniculate body (MG) and the lateromedial-suprageniculate (LM-Sg) complex, and a w...

the aim of this study was to compare the level of agreement between four operators with different levels of experience for two methods of detecting secondary enamel and dentin carious lesions in composite restored teeth.sixty teeth of 40 patients with with secondary carious lesions in the composite resin were selected. the teeth were examined by two methods; visual inspection and a laser fluore...

OBJECTIVES Dental composite wear in posterior restorations is a concern and is affected by different factors. This study was conducted to evaluate the effect of polishing and mechanical loads on wear of silorane-based and methyl methacrylate-based composites resins. MATERIALS AND METHODS Of each dental composite (Filtek P90 and Filtek P60), 40 samples were fabricated in a polyethylene mold (4...

Background. Wear resistance of pit and fissure sealant materials can influence their retention. Wear characteristics of sealant materials may determine scheduling of check-up visits. The aim of this study was to compare wear resistance of two flowable composite resins with that of posterior composite resin materials. Methods. Thirty-five disk-shaped specimens were prepared in 5 groups, includin...

objectives: application of sealants is a safe and effective way to prevent occlusal caries in the posterior teeth. a successful sealant therapy depends on good isolation. decreased steps of adhesive application may enable proper isolation and use of self-adhering flowable composites for sealant therapy. this study sought to compare the marginal microleakage of fissure sealants and self-adhering...

Background and aim: Efficient bonding techniques should be employed for strengthening tooth structure. Whether to preserve intact dental tissue or to sacrifice some undermined parts can still be challenging. We aimed to evaluate the fracture strength of cusp coverage with composite versus unsupported enamel reinforced with composite in posterior restorations. Materials and methods: In this in...

Objective: This paper evaluates the influence of the specific Xe ventilation images used to calculate differential function in quantitative ventilation-perfusion lung scans. Methods: Whole-lung differentials were determined on 43 Xe ventilationfl mTc-macroaggregated albumin perfusion studies. Ventilation calculations were performed for the firstbreath, up to three equilibrium and the composite ...

INTRODUCTION The total hip arthroplasty (THA) as part of acute fracture management is used for acetabular fractures in elderly patients. Our objective was to assess the stability of osteosynthesis performed using 2 different techniques in combination with THA in an experimental model. MATERIALS AND METHODS We conducted 20 experiments using the left-side hemipelves composite bone models. There...

The improvements in adhesives and composite technology have made resin-based composite resins and polyacid-modified resin-based composites (compomers) very popular as materials to restore primary and permanent anterior and posterior teeth. More conservative preparations can be performed maintaining more tooth structure due to the adhesive properties of the adhesives used with composites and com...