1/130. Single central maxillary incisor with nasal pyriform aperture stenosis--CT diagnosis prior to tooth eruption.Two children with nasal pyriform aperture stenosis had the diagnosis of single central maxillary incisor made with CT scanning prior to tooth eruption and the clinical appreciation of this finding. The surgical and clinical implications of this diagnosis will be presented.- - - - - - - - - - ranking = 1keywords = tooth (Clic here for more details about this article) |
2/130. Primary failure of tooth eruption: a unique case.Primary failure of tooth eruption rarely occurs. This case represents a rare clinical situation and appears to reflect a generalized disturbance in the eruptive process, inasmuch as (1) deciduous and permanent dentition are affected, (2) incisors, molars, and premolars are involved in all quadrants, (3) skeletal and craniofacial growth are within normal limits, and (4) no systemic/genetic anomalies were detected. This is the first such case reported in the literature; diagnosis and management are discussed.- - - - - - - - - - ranking = 1keywords = tooth (Clic here for more details about this article) |
3/130. Anomalies of craniofacial skeleton and teeth in cleidocranial dysplasia.Mutations involving the transcription factor CBFA1 cause cleidocranial dysplasia (CCD) in man. Recently, a mouse model of CCD has been generated (Cbfal /-) [Komori et al., 1997], and disturbances of osteoclast differentiation have been documented. It has been shown that these animals exhibit hypoplastic clavicles and nasal bones, and retarded ossification of parietal, interparietal, and supraoccipital bones. humans with CCD show all these features, including severely retarded ossification of the cranial base, strongly suggesting that both intramembranous ossification and endochondral ossification are affected. In addition, CCD patients have multiple supernumerary teeth and delayed tooth eruption. The present report presents 3D reconstructions of computerised tomography (CT) scans of the craniofacial region of a CCD boy examined at both 1 and 7 years of age. The anomalies in craniofacial skeleton and teeth are analysed and compared to the findings of our previous clinical studies and to the findings in the animal model. Based on the available information, we suggest that osteoblast, osteoclast, and dentinoclast differentiation may be disturbed in CCD.- - - - - - - - - - ranking = 0.2keywords = tooth (Clic here for more details about this article) |
4/130. Molarization of the lower second premolars.This paper presents a case of extreme tooth variation. The patient was first observed during the mixed dentition period, when she presented a mild Class II malocclusion with increased overjet and acceptable overbite. In a panoramic radiograph, the presence of lower second premolars of disproportionate dimensions was discovered. When these oversized premolars erupted, the Class I malocclusion tended toward Class III, with an edge-to-edge bite. This created an unstable occlusion and the possible need for extractions.- - - - - - - - - - ranking = 0.2keywords = tooth (Clic here for more details about this article) |
5/130. Clinical problems associated with unusual cases of talon cusp.CASE REPORT: Talon cusp is an uncommon dental anomaly manifested as an accessory cusp-like structure on the crown of anterior teeth. This report describes two unusual cases of talon cusp. Case 1 showed bilateral anomalous cusps on the palatal aspects of maxillary supernumerary teeth, causing premature contact and tooth impaction. In case 2, a double-fused talon cusp was projected from the palatal surface of a large geminated central incisor. A talon cusp is not an innocuous defect, as it may provide a substantial diagnostic, treatment planning and procedural challenge. early diagnosis and management are important to avoid complications.- - - - - - - - - - ranking = 0.2keywords = tooth (Clic here for more details about this article) |
6/130. Dysosteosclerosis: a case with unique dental findings and SEM evaluation of a hypoplastic tooth.A ten-year-old boy, who had the typical dental findings of dysosteosclerosis such as yellowish, hypoplastic teeth, retarded eruption, which upon eruption, decayed rapidly, is presented. To date this is the first known case reported with a congenital absence of the first permanent molars. Furthermore, SEM evaluation of the enamel and dentin was performed on a tooth from a patient with dysosteosclerosis for the first time. These studies showed weak ultrastructural compositions due to irregular calcification.- - - - - - - - - - ranking = 1keywords = tooth (Clic here for more details about this article) |
7/130. Globodontia in the otodental syndrome.A family of Polish extraction was studied in which massive, globe-shaped posterior teeth were found in a father and two of his sons, similar to those described in a previous family in which persons with this type of teeth also had a high-frequency sensorineural deafness. The audiograms in this family showed high-frequency air-conduction thresholds in the father and one son with globodontia and in other relatives without the tooth defect. The other son with abnormal teeth had a normal-appearing audiogram. Absence of premolar teeth and yellow-white spots of local hypomaturation of enamel on canine teeth were also findings in this kindred, as reported or observed in other kindreds. The disorder illustrates the problem of variable expressivity of a trait which makes it difficult to predict the risk of having an affected child when only one feature of a syndrome is present in a relative of a fully affected patient.- - - - - - - - - - ranking = 0.2keywords = tooth (Clic here for more details about this article) |
8/130. Hereditary hypodontia and onychorrhexis of the fingernails and toenail koilonychia: Witkop's tooth-and nail syndrome.The tooth-and-nail syndrome (Witkop's syndrome) is a rare autosomal dominant ectodermal dysplasia manifest by defects of the nail plates of the fingers and toes and hypodontia with normal hair and sweat gland function. We report a thirteen year-old girl who presented with marked longitudinal ridging of the nail plates of all ten fingers. The toenails were mildly ridged with koilonychia. Her mother's fingers were similarly affected to a lesser degree while her toenails appeared normal. Examination of the child's dentition revealed a hyperplastic frenulum and the absence of one of the usual four mandibular incisors. history provided by the mother described the maternal grandmother and maternal great aunt as having identical nail findings and the presence of only three lower incisors. hair examination was normal in the mother and child, and no history or findings of sweat gland dysfunction was present. This report describes familial hypodontia, fingernail onychorrhexis, and toenail koilonychia consistent with Witkop's syndrome.- - - - - - - - - - ranking = 1keywords = tooth (Clic here for more details about this article) |
9/130. Enamel pearls and cervical enamel projections on 2 maxillary molars with localized periodontal disease: case report and histologic study.Presented here is an unusual case of teeth with aberrant enamel. One small and 3 large enamel pearls were identified in 2 maxillary third molars of a patient. One long enamel projection was connected to one of the large enamel pearls, along with 2 short cervical enamel projections. The ectopic enamel was associated with advanced localized periodontal destruction. After extraction, the molars were investigated radiographically and under the scanning electron microscope. The 3 large pearls contained distinct dentinal cones. The enamel of the pearls and the long cervical projection exhibited most of the structural attributes of crown enamel but were somewhat irregular, with variable shape and course of the prisms. Morphologic considerations suggest that these enamel pearls were aberrations and should not be regarded as attempts at new cusp or new tooth formation.- - - - - - - - - - ranking = 0.2keywords = tooth (Clic here for more details about this article) |
10/130. Malformation in the primary and permanent dentitions following trauma prior to tooth eruption: a case report.Dento-facial injuries that occur prior to the eruption of teeth in the primary dentition are rare, but can result in damage to the primary dentition. We report a rare case where an injury to the anterior maxilla and mandible of an infant prior to primary tooth eruption resulted in hypoplasia, displacement and impaction of the primary dentition and damage to a developing permanent tooth.- - - - - - - - - - ranking = 1.2keywords = tooth (Clic here for more details about this article) |
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