Intrusions occur frequently in the primary dentition. It has been reported that conservative treatment of the intruded primary tooth is preferred if the apex is away from the permanent tooth germ. Conservative treatments include waiting for spontaneous re-eruption, and surgical re-positioning and fixation. Few papers have been published in Japan comparing the prognoses of intruded primary teeth...

Gemination is defined as an attempt to make two teeth from one enamel organ. Bilateral presentation of this phenomenon is very rare, with prevalence of 0.01% to 0.04% in the primary, and 0.05% in the permanent dentition. This paper describes a rare case of huge bilateral gemination of permanent maxillary central incisors in a nine-year-old Iranian boy with poor aesthetic. The patient did not ha...

Developmental anomalies can occur as a result of conjoining or twinning defects. These include fusion, gemination and concrescence. Such anomalies occur more often in the deciduous than in the permanent dentition and only a few cases involving molar and premolar teeth have been reported in the literature. Cases of bilateral double teeth are less frequent than unilateral and prevalence seems to ...

Liversidge and colleagues developed a method for predicting the age of immature skeletal remains based on the length of developing teeth. This quantitative method combines dental data from both jaws, except for the permanent lateral incisor, and because there are reasons to suspect that these two types of data are not identical and should not be combined, it raises concerns regarding the accura...

A supernumerary tooth is a tooth that is additional to the normal set of teeth and are most commonly seen in the anterior maxillary region [1]. Supernumerary teeth are more common in permanent dentition as compared to primary dentition. The prevalence is 0.15–1% in permanent dentition and 0.3–0.6% in the primary dentition with proportion of 2:1 for male sex [2]. The presence of a supernumerary ...

The purpose of this study was to assess the prevalence and severity of dental fluorosis in 513 primary school children in Nairobi. The clinical examination was performed in a room with natural daylight using Thylstrup & Fejerskov's index (TFI). Overall, 18% of 6-8-yr-olds had dental fluorosis in the primary dentition and 76% of 13-15-yr-olds in the permanent dentition. There was no significant ...

OBJECTIVE Some anti-epileptic drugs (AED) have well-known teratogenic effects. The aim of the present study was to elucidate the effect of prenatal exposure to AED and the risk of enamel defects in the primary and permanent dentition. METHODS A total of 38 exposed and 129 non-exposed children, 6-10 years of age, were recruited from the Aarhus Birth Cohort and the Department of Neurology, Vibo...

dentin dysplasia is an exceptionally rare, autosomal-dominant, hereditary condition, primarily characterized by defective dentin formation affecting both the deciduous and permanent dentitions. the etiology remains imprecise to date, in spite of the numerous hypotheses put forward and the constant updates on this condition. this case report of type i dentin dysplasia exhibits radiographic fi nd...