Vertebrate dentitions are extraordinarily diverse in both morphology and regenerative capacity. The teleost order Tetraodontiformes exhibits an exceptional array of novel dental morphologies, epitomized by constrained beak-like dentitions in several families, i.e., porcupinefishes, three-toothed pufferfishes, ocean sunfishes, and pufferfishes. Modification of tooth replacement within these grou...

Teeth are extremely useful in the estimation of age and are preferable over other skeletal methods As they are durable in archaeological contexts, have minimal remodeling, and the growth of permanent and deciduous teeth continues over the entire juvenile period [1,2]. Formation of deciduous teeth begins in utero at about 4 months and permanent teeth complete formation at approximately 25 years ...

The interrelationships among five measures of physiologic maturity for 50 French-Canadian girls are evaluated--menarche, peak height velocity (PHV), 75% skeletal maturity, appearance of the ulnar sesamoid, and 90% dental development. The mean ages of occurrence of the events differed significantly (P less than 0.01). Menarche and 90% dental maturity showed the least variability. Ages of PHV, me...

This study was designed to explore development of skill acquisition in dental education, utilizing the Dreyfus and Dreyfus continuum. By identifying what skill progression may be recognized in the expert dental educator and what experiences appear to influence this growth, the knowledge gained may inform more efficient, effective faculty support, development and life-long learning. Employing a ...

BACKGROUND Many observational studies have found that exposure to dental X-rays is associated with the risk of development of meningioma. However, these findings are inconsistent. We conducted a meta-analysis to assess the relationship between exposure to dental X-rays and the risk of development of meningioma. METHODS The PubMed and EMBASE databases were searched to identify eligible studies...

Microcomputerized tomography (micro-CT) allows discriminating very smal lchanges in dental hard tissue volumes. The aim of the present study was to create a new method for obtaining high-resolution, three-dimensional images of dental hard tissue development using micro-CT, and to observe the changes in dental hard tissue development and composition in growing rat pups. Tooth germs from rats at ...

This report describes a case of combined dental development abnormalities. A patient with a previous ectopically erupted supernumerary maxillary canine presented a new ectopically erupted supernumerary premaxillary tooth with dens invaginatus (Oehlers' type 2) and an aberrant coronal morphology, including a pit in the distal portion of the palatal surface. This tooth would have been diagnosed e...

Learn the factors acting as determinants of relative dental and skeletal maturity findings. It is recommended that radiographs be made periodically including both during the mixed dentition (8-9 year old) and adolescence (12-14 year old) to evaluate growth and development, and to look for asymptomatic dental disease [1-3]. Substantial differences in the assessed biological and the known chronol...

The embryonic head development, including the formation of dental structures, is a complex and delicate process guided by specific genetic programs. Genetic changes and environmental factors can disturb the execution of these programs and result in abnormalities in orofacial and dental structures. Orofacial clefts and hypodontia/ oligodontia are examples of such abnormalities frequently seen in...

A faculty of sufficient size and possessing the appropriate skills is critical to dental education. Faculty shortages have been identified, but little has been written about the skills and abilities necessary for dental faculty to be effective. This project identified consensus lists of competencies in the areas of teaching and research. A panel of dental education experts used a web-based Delp...