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PubMedDate not supplied

Effect of familial hypophosphatemic rickets on dental development: a controlled, longitudinal study.

Familial or X-linked hypophosphatemic rickets (XLHR) is the most common type of rickets in developed countries today. While the dental manifestations of rickets are well reported, there is little information regarding its relationship to dental development and other dental anomalies. This investigation studied the rate of dental development and associated dental anomalies in 19 XLHR subjects compared with 38 race-, age-, and sex-matched control children. The results showed that in both XLHR and control children, no significant differences existed in dental age compared with the respective chronological age, indicating that rickets did not affect the rate of dental development. Longitudinal growth curves of seven XLHR and matched control children substantiated that relationships of dental to chronological ages were comparable in both groups. Male XLHR subjects showed significantly increased tendency for dental taurodontism with mean Crown-Body (CB):Root (R) ratio of 1.1 compared with 1.0 in females and 0.8 in controls (P < 0.02). Male XLHR children also showed significantly increased prevalence (50%) of ectopic permanent canines compared with control children (8%, P < 0.01).

Adolescent↗
PubMed1996

Eruption anomalies of the maxillary permanent cuspids in children with cleft lip and/or palate.

Eruption anomalies of the maxillary permanent cuspid on the cleft side was analyzed in a sample of 77 children with mono- and bi-lateral cleft lip/palate. The main findings were: 1) The permanent cuspid showed an initial mesial position in relation to the root of its primary predecessor in a relatively high number of cases. Nearly all those cuspids that showed an anomalous position (mesial or distal) in relation to the corresponding primary teeth at the time of the first observation erupted in malposition (palatally in the cleft area, mesially or distally to the primary cuspids). 2) In most cases presenting a mesially positioned permanent cuspid at the time of first observation, the permanent later incisor was congenitally missing, microdontic or in a mesial position in relation to the cleft. 3) Distally positioned permanent cuspids were always associated with a supernumerary lateral incisor. 4) A congenitally missing lateral incisor could represent a predisposing factor to a mesial position of the permanent cuspid. An early radiographic evaluation of the position of the permanent cuspid was suggested especially in those children presenting a congenitally missing lateral incisor.

Adolescent↗
PubMed1995

Crown dilaceration of permanent incisors following trauma to their primary predecessors.

Crown dilaceration of a permanent tooth constitutes 3% of traumatic injuries to developing teeth. It usually involves the maxillary incisors and less frequently their mandibular counterparts. This report concerns a patient, whose primary mandibular central incisors, following a fall at the age of 14 months, sustained partial avulsion with displacement. The teeth were repositioned by the father, with the aid of a pediatrician, and without the assistance of a dentist. The patient presented at the age of 8 years, and, following clinical and radiographic examination, a diagnosis was made of crown dilaceration with lingual displacement of the incisal third of the permanent mandibular central incisors, and hypoplastic enamel on all but the gingival third of their crowns. In addition to this, a supernumerary tooth was discovered labial to and between the mandibular right permanent central incisor and the mandibular right primary lateral incisor. After a brief review of the literature, the treatment of this patient is described and the restoration of the dilacerated teeth, followed by a discussion on crown dilaceration and issues concerning the restoration of such teeth.

Child↗
PubMed1996

Survey of anomalies in primary teeth and their correlation with the permanent dentition.

The purpose of the study was to investigate primary and permanent tooth anomalies of 5-year-old children in Taranaki; 1,680 children were examined by school dental therapists, and the presence of hypodontia, hyperdontia, and double teeth recorded. Panoramic radiographs were taken of those children with anomalies of the primary teeth. Anomalies of the primary teeth were detected in 23 children (1.4 percent). Six children (3 boys and 3 girls) had hypodontia, 3 children (2 boys and 1 girl) had a supernumerary tooth, and 14 children (9 boys and 5 girls) had double teeth. Six of the affected teeth (in 4 boys and 2 girls) were diagnosed as fusion, and 8 (5 boys and 3 girls) as gemination. The panoramic radiographs of the 23 children with anomalies of the primary teeth revealed that 14 (60.9 percent) also had anomalies of the succedaneous permanent teeth. Children with hypodontia in the primary dentition all had corresponding permanent teeth missing. In all but three children, only one tooth was involved. Nineteen of the 30 primary teeth (63 percent) and 12 of the 15 permanent teeth (80 percent) affected by hypodontia, gemination, or fusion were lateral incisors. For each type of anomaly, boys were affected more often than girls. The results of the study confirm that, when there is hypodontia, hyperdontia, gemination, or fusion of teeth in the primary dentition, there is an increased likelihood of anomalies of the succedaneous permanent teeth. Because of this close relationship between the dentitions, early identification of anomalies of the primary teeth can allow the dentist to investigate further and plan for treatment at the appropriate time.

Anodontia↗
PubMed1995

Radicular grooves in maxillary lateral incisor: case report.

The authors present a case report of a radicular groove in a maxillary lateral incisor in a 58-year old male patient. Endodontic and periodontal treatment was not carried out and therefore, avulsion of the tooth was indicated. The radicular grooves were very deep with pulp chamber communication.

Dental Pulp Cavity↗
PubMed1996

[Veterinary dentistry (12). Discoloration of teeth in companion animals].

Tooth discolouration is frequently seen in companion animal practice. Knowledge of the composition and development of the dental tissues involved in such discolouration and identification of the cause of the discolouration and the consequences for the dentition are essential to provide adequate treatment for the problem. This article provides a practical classification of tooth discolouration in companion animals and discusses the most common discolourations.

Animals↗
PubMed1996

[Impact of antimitotic chemotherapy on the dentition. Apropos of 71 cases].

The authors show the responsibility of antimitotic chemotherapy on the disturbances in dental development in the young children. They insist on doing an odonto-stomatologic check-up at the beginning of the treatment and to keep a constant watch during the treatment and until the end of dental evolution.

Adolescent↗
PubMedDate not supplied

Dens evaginatus: a review.

A review of the developmental dental anomaly, dans evaginatus, and a discussion of its clinical management is presented. Fracture or wear of the tubercle of dens evaginatus frequently results in pulp necrosis and early periapical infection, often prior to completion of root formation. Early recognition of this anomaly, followed by timely treatment can prevent the loss of pulp vitality in these teeth. Patients presenting with nonvital teeth and incomplete root development have been successfully treated by apexification followed by conventional endodontic therapy.

Bicuspid↗
PubMed1994

Cervical enamel projection related to furcation involvement.

Reviewing the literature the authors show the importance of cervical enamel projections (CEP) in the involvement of molar furcation. The dento-gingival relationship of CEP structure is peculiar for not having connective attachment but only long junctional epithelium. In numerous studies, most mandibular and maxillary molars presented CEP, mainly of little extension, with an incidence ranging from 8.8 to 87.4%. The studies showed a relationship between cervical enamel projection and the presence of inflammatory periodontal disease, and furcation involvement of molars. These data suggest that a detailed clinical trial must be carried out as well as early diagnosis of periodontal disease at the region of furcation.

Dental Enamel↗
PubMed1995

Adult orthodontic treatment.

The scope of Orthodontic treatment then in adults is considerable. At examination it is prudent to assess carefully the patients wishes and expectations in relation to treatment. Many adults can be treated by orthodontics alone but for the remainder the multifaceted nature of the work involved calls for a high degree of co-operation and understanding between the different dental disciplines involved. Special attention has to be given to the retention phase. The patients satisfaction and fulfilment with well executed treatment is generally remarkable and suggests that the increase in demand for adult orthodontics will continue.

Adult↗
PubMed1996

Prevalence of developmental enamel defects and dental caries in rural pre-school Thai children.

The prevalence of developmental enamel defects and dental caries was assessed in 344 Karen children aged 1-4 years who were chronically (70 per cent) and acutely malnourished (9.3 per cent) The teeth were cleaned with gauze to facilitate detection of hypoplastic lesions on labial surfaces of maxillary incisors. At least one tooth with defective enamel was seen in 31.9 per cent of children, while enamel hypoplasia was present in 22.7 per cent of children. Enamel defects were found in 21.2 per cent of teeth, with hypoplasia and opacities occurring in 14.6 and 6.6 per cent of teeth, respectively. Gender did not alter the prevalence of defects. The upper central incisors were affected more than lateral incisors. The prevalence of dental caries was 31.9 per cent with a mean dt of 1.1. The prevalence of caries associated with enamel hypoplasia was significantly greater than that associated with opacities and sound enamel (P < 0.0005).

Acute Disease↗
PubMed1996

Dental anomalies in the primary dentition: distribution and correlation with the permanent dentition.

The study consisted of analysis of all cases of anomalies in the primary dentition that were seen or treated by the authors in the Department of Children's Dentistry and Orthodontics. A total of 79 occurrences of anomalies was seen in 65 children. The anomalies detected were double teeth, hypodontia and supernumerary teeth. Radiographic examinations of the affected children showed that over 60% of the cases with anomalies in the primary dentition are associated with anomalies of the succadeneous permanent dentition. All subjects with hypodontia of the primary dentition presented with hypodontia of the permanent dentition. However, anomalies of the permanent dentition were seen in 59% of subjects with primary double tooth and 50% of subjects with primary supernumerary tooth.

Anodontia↗
PubMed1996

An unusual dilacerated root of a second maxillary molar.

An unusual case of a second maxillary molar with a dilacerated root visible clinically is described. Apicectomy followed by retrograde amalgam filling was performed whereby gingival coverage and gingival seal was achieved.

Adult↗
PubMed1997

Pre-eruptive coronal radiolucency in a mandibular premolar: a case report and literature review.

This report describes a coronal radiolucency in an unerupted mandibular premolar. This anomaly, which most frequently involves the mandibular second molars, has been variously attributed to dental caries, dentine hypoplasia, inclusions of uncalcified enamel matrix, and resorption. The present instance was considered to be due to external resorption. Because these lesions may enlarge rapidly, frequent radiographic monitoring of an affected tooth is recommended. Early restorative treatment has been shown to be successful even in affected teeth with small pulp exposures.

Adolescent↗