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Dental Anomalies (dental + anomaly)
Selected AbstractsOral features and dental health in Hurler Syndrome following hematopoietic stem cell transplantationINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 5 2010ELEANOR McGOVERN International Journal of Paediatric Dentistry 2010; 20: 322,329 Background., Hurler Syndrome is associated with a deficiency of a specific lysosomal enzyme involved in the degradation of glycosaminoglycans. Hematopoietic stem cell transplantation (HSCT) in early infancy is undertaken to help prevent the accumulation of glycosaminoglycans and improve organ function. Aim., To investigate the oral features and dental health of patients with Hurler Syndrome who have undergone successful HSCT. Materials and methods., Twenty-five patients (median age 8.6 years) post-HSCT (mean age 9.4 months) underwent oral assessment (mean of 7.5 years post-HSCT). Results., Dental development was delayed. Numerous occlusal anomalies were noted including: open-bite, class III skeletal base, dental spacing, primary molar infra-occlusion and ectopic tooth eruption. Dental anomalies included hypodontia, microdontia, enamel defects, thin tapering canine crowns, pointed molar cusps, bulbous molar crowns and molar taurodontism. Tooth roots were usually short/blunted/spindle-like in permanent molars. The prevalence of dental caries was low in the permanent dentition (mean DMFT 0.7) but high in the primary dentition (mean dmft 2.4). Oral hygiene instruction with plaque and or calculus removal was indicated in 71% of those that were dentate. Conclusion., Patients with Hurler Syndrome post-HSCT are likely to have delayed dental development, a malocclusion, and dental anomalies, particularly hypodontia and microdontia. [source] Concomitant developmental dental anomalies in Chinese children with dens evaginatusINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 4 2006S. Y. CHO Summary., Aim., To determine the prevalence of concomitant developmental dental anomalies in a group of Chinese children with dens evaginatus. Methods., The dental records and orthopantomograms of 10,15 year old children and adolescents who had been diagnosed with dens evaginatus in a school dental clinic were reviewed retrospectively. Results., Four hundred and forty-eight of 7102 (6·3%) children were found to have dens evaginatus. Concomitant developmental dental anomalies were found in 77 children (17·2%). The most commonly seen dental anomalies in the study population were hypodontia, hyperdontia, microdontic maxillary lateral incisor, and dental impaction. The prevalence of these anomalies did not differ significantly to that found in the general Chinese population. When analysed separately, however, the prevalence of supernumerary premolars was found to be higher in children with dens evaginatus than in the general population, and the difference was statistically significant (P < 0·01). Conclusion., Supernumerary premolars appeared to be more prevalent in Chinese children with dens evaginatus than in the general population. There may be an association of supernumerary premolars with dens evaginatus in this study population. [source] Craniofacial skeletal deviations following in utero exposure to the anticonvulsant phenytoin: monotherapy and polytherapyORTHODONTICS & CRANIOFACIAL RESEARCH, Issue 1 2003HI Orup Jr Structured Abstract Authors , Orup Jr HI, Holmes LB, Keith DA, Coull BA. Objective , To identify and quantify the craniofacial effects from prenatal exposure to phenytoin monotherapy and polytherapy using cephalometric, hand-wrist, and panoramic radiographs and to determine if such deviations persist with age. Design , Craniofacial structures of 28 anticonvulsant-exposed individuals were evaluated using 20 landmarks in lateral cephalometric radiographs and 19 landmarks in frontal cephalometric radiographs. Skeletal maturity was assessed using hand-wrist radiographs. Dental maturity and the presence of dental anomalies were evaluated using panoramic radiographs. Eleven individuals were re-evaluated 7 years later, on average, to determine the persistence of any measured deviations. Setting and Sample Population , Department of Growth and Development, Harvard School of Dental Medicine and Massachusetts General Hospital. Patients were recruited from several sources. Outcome Measure , The evaluated dimensions included linear, angular, and proportional measures. Results , The most common deviations were decreased height and length of the maxilla, decreased length of the posterior cranial base, length of the mandible, cranial width and level of the cribriform plate, and a decrease in the Wits Appraisal assessment. The deviations were more significant in the polytherapy-exposed individuals than in the monotherapy-exposed individuals. These deviations, especially in the maxilla, persisted with age as revealed in a re-evaluation of 11 individuals. Conclusion , The craniofacial skeletal findings among individuals exposed in utero to phenytoin monotherapy or phenytoin polytherapy, when considered in aggregate, suggest a mild pattern of maxillary hypoplasia that becomes more pronounced with age. [source] A rare case of dens invaginatus in a mandibular canineAUSTRALIAN ENDODONTIC JOURNAL, Issue 2 2010Roy George mds Abstract Dens invaginatus (dens in dente) is a common dental anomaly with a reported prevalence of between 0.04% and 10%. It typically affects permanent maxillary lateral incisors, central incisors and premolars. These developmental lesions are less common in mandibular teeth and are extremely rare in canines and molars. This report describes a rare case of dens invaginatus (Oehlers type II) in a permanent mandibular canine. The tooth was mature with a closed apex and showed apical pathosis. The tooth was treated endodontically using a non-surgical technique with hand endodontic files, and then followed up after a period of 8 months. A follow-up radiograph showed some healing of the lesion. [source] | ||||||||||