OBJECTIVE The aim was to evaluate the effect of different adhesive systems and surface treatments on the integrity of resin-resin and resin-tooth interfaces after partial removal of preexisting resin composites using quantitative image analysis for microleakage testing protocol. MATERIALS AND METHODS A total of 80 human molar teeth were restored with either of the resin composites (Filtek Z25...

in this article, the prcsigrnoid avenue to pertroclivai region is introduced and the advantage of such an approach is disusscd. ten patients were operated on by this approach. two illustrative cases are also presented.

Among the variety and diversity of pigeon houses, Multi-Tier Pigeon Houses (MTPHs) are distinguished from the functional and aesthetic point of view and are considered as a specific local architectural sights of Lenjanat. However, few studies have been conducted to study this type of pigeon house and these constructs have remained unknown. In this study we have conducted library and field studi...

BACKGROUND Despite the growing tendency toward tooth-colored restorations in dentistry, polymerization shrinkage and subsequent marginal microleakage remains a problem. The aim of this in vitro study was to compare microleakage between silorane-based and methacrylate-based composite resins at different time intervals and with different restorative techniques. MATERIALS AND METHODS In this in ...

Objective: This study evaluated the effect of food-simulating media associated with brushing and coffee staining on color stability of different composite resins. Materials and methods: Eighty specimens were prepared for each composite: Grandio SO (Voco), Amaris (Voco), Filtek Z350XT (3M/ESPE), Filtek P90 (3M/ESPE). They were divided into four groups according to food-simulating media for 7 day...

This study evaluated the effectiveness of different sealants applied to a nanofiller composite resin. Forty specimens of Filtek Z-350 were obtained after inserting the material in a 6x3 mm stainless steel mold followed by light activation for 20 s. The groups were divided (n=10) according to the surface treatment applied: Control group (no surface treatment), Fortify, Fortify Plus and Biscover ...

STATEMENT OF THE PROBLEM Composite bond to dentin is crucial in many clinical conditions particularly in deep cavities without enamel margins due to insufficient penetration of adhesive into demineralized dentin. PURPOSE The aim of this study was to assess the shear bond strength (SBS) of a methacrylate-based and a silorane-based composite resin to surface and deep dentin after pretreatment w...

the goal of medicine is to prevent harm as hippocrates pointed out; “primum non nocere; first do no harm”. has this fact been taken into account in developing medical education curricula in asia? frequency of diseases in asia is different from high income countries (1, 2) and funds for research are lacking.  it is therefore important to allocate available funds to the most applicable issues to ...

conclusions although spinopelvic fracture dislocation injuries are severe high-energy entities, in cases with traumatic spondylolytic spondylolisthesis due to widening of the vertebral canal, neurologic deficit may not be seen at all. case presentation we described a 16-year-old girl with extremely severe axial trauma to the lumbosacral spine who presented with fracture dislocation of the lumbo...