AIM This was to evaluate some suggested diagnostic procedures, treatment policies and professional attitudes of specialists in paediatric dentistry, in light of the periodically published guidelines by The American Academy of Pediatric Dentistry, The European Academy of Paediatric Dentistry and The British Society of Paediatric Dentistry. METHODS Using a structured questionnaire, 67% of the I...

Background and Aim: In recent years there has been a surge in the use of tooth-colored restorations. However, the polymerization shrinkage of these materials can form gaps, resulting in microleakage. This study aimed to compare microleakage by using different materials and techniques. Materials and Methods: In this experimental study, Cl II cavities were prepared on the mesial surfaces of 60 s...

The normal and lateral line cycloid scales of a cyprinid fish Rutilus frisii kutum Kamenskii, 1901 have been subjected to scanning electron microscopy technique to study their detailed structure. The scales have the general morphological characteristics of the cycloid scales. In the normal scale located below the dorsal fin, the focus lies on the anterior region with few mucous pores. There is ...

Introduction: Posterior composites are one of the most popular filling materials. The aim of this study was to evaluate the problems of general dentists during and after posterior composite restorations in city of Babol. Materials &Methods: In this study, data were collected using questionnaire about the problems during and after posterior composite filling. Then data were analyzed by chi sq...

Pulpal response of four calcium hydroxide liners, MPC 10, MPC 12, Dycal and Pulpdent were tested on primary and permanent teeth with zinc oxide and eugenol (ZOE) and silicate as controls. Responses of the pulps were evaluatedi in Rhesus monkeys, utilizing Class V cavity preparations at 3 days, 5 and 8 weeks. An equivalent number of anterior and posterior teeth were studied for all compounds. Th...

OBJECTIVE To determine the occurrence and severity of dental erosion in alcoholic patients undergoing detoxification at the North Alcoholic Regional Centre (CRAN), Porto, Portugal, and to assess socioeconomic and behavioural covariates of dental erosion occurrence. DESIGN A cross-sectional descriptive study was carried out in one centre (CRAN) for addiction rehabilitation therapy in the north...

STATEMENT OF THE PROBLEM Pulp stones are calcifications found in the pulp chamber or pulp canals of the teeth. Its different prevalence in different population is a matter of concern. PURPOSE This study aimed to assess the prevalence of pulp stones in a sample of Iranian population and to report its occurrence regarding gender, dental arch, tooth type and dental status. MATERIALS AND METHOD...

Zebrafish lost anterior teeth during evolution but retain a posterior pharyngeal dentition that requires retinoic acid (RA) cell-cell signaling for its development. The purposes of this study were to test the sufficiency of RA to induce tooth development and to assess its role in evolution. We found that exposure of embryos to exogenous RA induces a dramatic anterior expansion of the number of ...

Aim: Gingival margins of posterior composite restorations is usually more apical compared to CEJ. The present study was aimed to determine the microleakage in gingival margins of Class II composite restorations through using three different types of resin cements as liners. Materials and Methods: In this in-vitro study, two mesial and distal Class II cavities with 1mm gingival margins were crea...

Aim: To test the fracture resistance of maxillary premolars with MOD cavities restored with a new Zirconia reinforced Glass Ionomer Cement (Zirconomer) and to compare it with other conventional posterior restorative materials like GIC and Amalgam. Materials and Methodology: Freshly extracted forty intact, non-carious human maxillary premolars were collected and stored in distilled water. The te...