Introduction: This in vitro study aimed to evaluate the effect of different monomer systems on microleakage in class II composite open sandwich restorations with and without a separating agent placed between the nanofilled resin modified glass ionomer and the resin. Materials and methods: Class II cavity preparations were prepared in maxillary premolars (n = 240) and the cervical limit of the p...

In 1980 Katz et al. derived a formula for the percentage of successful collisions (PSC) as a quantitative measure of sperm-cervical mucus penetration efficiency. The use of PSC waned after its validity was questioned by reports of values >100% and the observation that PSC varied with the cross-sectional area of the mucus column. The aim of the present study was to develop a more accurate measur...

Introduction: Based on the etiology, cervical lesion is divided into carious and non-carious lesions. Cervical cavity fillings frequently experience failures, which lead to microleakage. Flowable composite resins RM-GIC are used as restorative materials for cavities. The application of an air abrasion technique before restoration can increase bond between material tooth structure. Purpose: To d...

Background: To assess microleakage in class II cavities restored with composite resins by using various placement techniques. Materials and methods: A total of 60 samples were enrolled, 10 each group. They divided into 6 groups. Scoring for the degree dye penetration at occlusal cervical walls evaluated. The results analyzed SPSS software. significance was determined p-value less than 0.05. Res...

Cervical dilation is the most important parameter that assessed during childbirth to validate a woman truly in labour and whether progressing as expected. It opening of mother’s cervix from when it closed at 0 cm fully dilated 10 cm, for baby pass through be delivered. The cylinder-shaped tissue connects uterus vagina. majorly highly subjective, painful, error-prone, infection-prone Vaginal Exa...

The first signs of mobile commerce hype are here. Extremely rapid penetration and growth processes are predicted on the basis of some quick descriptions of mobile technology. The roots of these predictions are often found in markets with a low penetration rate of mobile technology. Nevertheless, it should be clear that without real substance in m-commerce products and services the investments i...

This paper gives an overview on the potentials of numerical simulations for understanding dynamics in laser material processing. After a short introduction into the model, simulation results on several processes like laser beam deep penetration welding, drilling or cutting are presented. Furthermore simulation results are compared with experimentally obtained data.