Extracted human teeth are used in many preclinical courses. While there has been no report of disease transmission with extracted teeth, sterilization of teeth used in the teaching laboratory should be a concern. The purpose of this study was to determine the effectiveness of different sterilization/disinfection methods of extracted human teeth using Bacillus stearothermophilus, a bacteria resi...

Background: The third molar is different in many ways from all the other teeth. The aim of this study was to examine how often the third lower molars are chosen as abutment tooth. Methods: A total of 228 OPG was analyzed. The number of lower third molars (M3s) present per person as well as on the right or the left side of the mandible and their relationships, for both males and females were exa...

background and aims. the knowledge of variations in root canal morphology is critical for a successful endodontic treatment. the purpose of this study was to investigate variations in the root canal system of human mandibular first permanent molars in an iranian population. materials and methods. in this study, 209 mandibular first molar teeth were decalcified, dye-injected, and cleared in orde...

Abstract Background Cleaning and shaping of the root canal system is an important step endodontic treatment. Canal transportation a common procedural error in preparation curved canals. This study aimed to compare centering ratio two rotary files canals using cone-beam computed tomography (CBCT). Methods Forty-four extracted human mandibular first molars with mature apices 10° 30° apical curvat...

BACKGROUND Tooth mortality is important in evaluating dental care as tooth loss is a reflection of cumulative effects of past disease and treatment practices. AIM The aim of this study is to analyze the pattern of tooth mortality among pediatric dental patients treated at the University of Benin Teaching Hospital, Benin City, Nigeria. SUBJECTS AND METHODS This was a retrospective study of p...

Background: Tooth mortality is important in evaluating dental care as tooth loss is a reflection of cumulative effects of past disease and treatment practices. Aim: The aim of this study is to analyze the pattern of tooth mortality among pediatric dental patients treated at the University of Benin Teaching Hospital, Benin City, Nigeria. Subjects and Methods: This was a retrospective study of pa...

Aims: To assess and report the microhardness incidence in fissure system of human dental enamel next Er,Cr:YSGG laser Diode applications order to examine anti-cariogenic impact compare obtained results between two types. Materials Methods: Forty extracted impacted lower third molars teeth used experiment that should have an obvious occlusal fissure. Intact molar were collected, which free from ...