Purpose. To compare errors in digital panoramic radiographs of permanent and mixed dentitions. Methods. 143 and 146 digital radiographs of mixed and permanent dentitions were examined. Results. Significantly fewer errors presented in the mixed dentition. Positioning too forward significantly prevalent in the mixed dentition; slumped position and nonpositioning of chin properly were significantl...

introduction: the purpose of this study was to assess the level of primary knowledge among school staffs in iran with regards to the immediate management of dental trauma. methods: the data, from 160 participants, were collected using questionnaire, which surveyed staff’s background, attitude and knowledge of dental trauma management. results: the total number of school staff who responded to a...

objectives: attached gingival width (agw) is an important marker for diagnosis of periodontal disease and normal gingival sulcus depth (gsd) is a sign of healthy periodontium. the aim of this study was to determine the agw and gsd in3-15 year-olds with three dentition systems in isfahan in 2001.   methods: a total of 360 students (120 students in each system) eligible for this cross sectional s...

The aim of this study was to assess the individual and grouped influence of host-related factors on dental caries experience in permanent dentition of 7-9 year-old children. One hundred and twenty one children were recruited applying a stratified cluster sampling without replacement. Clinical examinations, Colorimetric Test and non-stimulated and stimulated saliva collection were performed; the...

The aim of this study was to assess the distribution of sagittal occlusal relationships in different dentition periods in a Turkish sample group. In total, 1,110 patients (561 females, 549 males) aged 4.6-23 years were randomly chosen after intraoral clinical examination. The subjects were classified according to their sagittal occlusal relationships and four dentition stages -deciduous, early ...

The periodontal ligament has a rich sensory nerve supply which originates from the trigeminal ganglion and trigeminal mesencephalic nucleus. Although various types of mechanoreceptors have been reported in the periodontal ligament, the Ruffini ending is an essential one. It is unknown whether the distribution of periodontal nerve fibers in deciduous teeth is identical to that in permanent teeth...

Human teeth are diphyodont excepting the permanent molars. The deciduous teeth are, ontogenetically considered, the first generation of teeth. The permanent teeth (except molars) belong to the second dentition. The term " third dentition " (also called the postpermanent dentition) refers to the opinion that one more set of teeth can occur in addition to the permanent teeth. The processes by whi...

Background: Traumatic injuries to the primary dentition are a frequent occurrence in children during the preschool ages of 1 to 4 years and are primarily due to falls. Developmental disturbances to the permanent teeth can occur from trauma to the primary dentition, resulting in hypoplastic defects and disruptions in eruption. The aim of this clinical case report was to demonstrate that developm...

Prevalence of anomalies of deciduous teeth has been analyzed in the general population of Zagreb preschool children. The sample comprised 2,987 children from 3 to 6 years of age (1,582 boys and 1,405 girls). Hypodontia was found in 0.47%, hyperdontia in 0.10%, and double teeth in 0.43% of total sample. Total prevalence of all anomalies in the sample was 1.0%. The sample for the analysis of perm...

Odontogenic anomalies can occur as a result of conjoining or twinning defects. These include fusion, gemination and concrescence. This article presents two case reports of double teeth. In the first case reported, a 4 -year-old white boy presented primary double teeth associated to the absence of the right permanent mandibular lateral incisor. In the second case, a 5-year-old white girl had a f...