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PubMedDate not supplied

Molarization and development of multiple supernumerary teeth in the premolar region.

This case is the radiological diagnosis of a supernumerary premolar with the molarization of both lower second premolars in a 12-year-old child. Ten years after the diagnosis, the delayed development of another 4 supernumerary premolars was detected. Orthopantomography during mixed dentition allowed the detection of anomalies not clinically suspected. Any alteration in the number of teeth should suggest the potential of associated dental anomalies, indicating the long-term clinical and radiological follow-up of the patient during the second decade of life.

Bicuspid↗
PubMed2000

An epidemiological study of supernumerary primary teeth in Japanese children: a review of racial differences in the prevalence.

OBJECTIVE: To clarify the prevalence of supernumerary primary teeth in Japanese children, we evaluated this prevalence in a sample of 8122 children aged 3-6 years. Furthermore, we undertook a statistical comparison of the findings of the present study with those of previous investigations on the prevalence of supernumerary primary teeth in Japanese, Chinese and Caucasian children. SUBJECTS: The subjects used in the study consisted of 8122 children aged 3-6 years (4102 boys and 4020 girls). The children were examined in kindergartens. METHODS: The prevalence of supernumerary primary teeth was recorded by visual inspection. Statistical analysis was carried out using the chi 2 test. RESULTS: Four cases of supernumerary primary teeth were found among the children examined, and thus the prevalence was 0.05%. All of the supernumerary primary teeth were located in the maxillary lateral incisor area. CONCLUSIONS: The prevalence in a sample of 8122 Japanese children was 0.05% and that in a combined sample of 65,068 Japanese children was 0.06%.

Anodontia↗
PubMed2003

Clinical complications associated with supernumerary teeth: report of two cases.

The presence of supernumerary teeth can interfere in normal occlusal development. The pediatric dentist should diagnose them as soon as possible, as most of the time they are asymptomatic. The objective of this paper is to show the presence of that dental anomaly in two pediatric patients, as well as the associated clinical complications with treatment.

Child↗
PubMed1980

The effects of cyclophosphamide, nitrosomethylurea and benzo(a)pyrene on the rat incisor.

Wistar rats given a single intraperitoneal injection of 75 mg cyclophosphamide revealed dental anomalies in the form of shortening or lengthening of incisors, and development of supernumerary teeth. Rats given additionally 5 mg/kg b. w. of a nitrosomethylurea solution over a period of four months showed the same dental anomalies, but with relatively shorter latency times. In a supplementary investigation examining the effects of benzo(a)pyrene and nitrosomethylurea applied locally to the organon dentale, neoplastic lesions and dental dysplasia were seen.

Animals↗
PubMed1978

[Cleido-cranial dysplasia--two observations].

The radiological changes of cleido-cranial dysplasia are described on the basis of two cases. Special attention is paid to the dental and facio-maxillary aspects. The main features are: (1) Supernumerary teeth, persistence of the first dentition, retention of the second dentition. (2) Open fontanelles and sutures and intercalary bones. (3) Hypo- or aplasia of the clavicles. (4) Defects in the vertebral neural arches and (5) dehiscence of the symphysis due to absent or delayed ossification of the pubis and ischium.

Adult↗
PubMed1975

Dental abnormalities in rats after a single large dose of cyclophosphamide.

Delayed drug-related mortality in rats treated with a single high dose (75 mg/kg) of cyclophosphamide complicated experiments using this drug treatment. We observed that this delayed mortality was due to dental abnormalities including broken teeth, absent teeth, extra long teeth, and/or supernumerary teeth. These dental abnormalities developed about 140 days after treatment and, if left untreated, interfered with eating. Eventually, the untreated rats starved. Clipping their long teeth and feeding the rats powdered chow eliminated the deaths. Researchers should be aware that high doses of cyclophosphamide may result in dental abnormalities several months after the treatment.

Animals↗
PubMed2002

Multiple supernumerary teeth in association with malocclusion: report of two cases.

Although multiple supernumerary teeth without any associated syndromes are rare, their occurrence can create a variety of clinical problems such as derangement of the occlusion, prevention of eruption of permanent teeth, damage to adjacent teeth, cystic degeneration and root resorption. Hence, clinical and radiographic evaluation of patients should always be thorough in order to detect their presence. Furthermore, because the clinical management of multiple supernumerary teeth poses a great challenge to clinicians, timely, appropriate consultation and interdisciplinary approach to treatment is extremely important. We report two cases, a 14 year-old boy with eight and a 13-year-old girl with seven supernumerary teeth not associated with syndromes. In the boy, the teeth were bilaterally distributed in all quadrants in the premolar regions, and in the girl they were distributed bilaterally in the premolar regions in the mandible and bilaterally distal to the upper third molars. The clinical implications and management are discussed.

Adolescent↗
PubMed1997

Prevalence of congenital dental anomalies of the deciduous dentition in Japanese children.

We examined the prevalence of anomalies in deciduous dentition in 2,733 Japanese three-year-old children. The results showed that fused teeth occurs in 4.10%, congenital missing teeth in 2.38%, enamel hypoplasia in 1.50%, peg-shaped teeth in 0.55%, palatal cusps in upper deciduous incisors in 0.37%, supernumerary teeth in 0.07%, and color anomalies in 0.07%. Sixty-nine boys and 43 girls had fused teeth, percentages of 4.88 and 3.26, respectively. This difference was significant. All the fused teeth were located in the anterior region and were more frequent in the mandibular than in the maxillary arch. In the mandibular arch, 50 cases involved the lateral incisor and canine; the central incisor and lateral incisor were fused in 48 instances. There were 30 boys (2.12%) and 35 girls (2.65%) with congenitally missing deciduous teeth. This difference was not significant. Unilateral missing teeth were more frequently observed than bilateral missing ones. The lower lateral deciduous incisor was the most frequently missing tooth. The prevalences of fused teeth and congenital missing teeth were significantly higher in this study than in studies of American and Scandinavian children. These two anomalies are tending to increase in frequency in Japan.

Anodontia↗
PubMed1981

Supernumerary and congenitally missing primary teeth in Finnish children. An epidemiologic study.

The prevalence of supernumerary and congenitally missing primary teeth was studied in a sample of 1141 children aged 3-4 years. The prevalence of supernumerary teeth was 0.4%; all the supernumerary teeth being located in the maxillary incisor area. The prevalence of congenitally missing teeth was 0.9%; seven of the missing teeth being maxillary and four mandibular lateral incisors. The differences in the prevalence of the anomalies between the sexes were not statistically significant. Of the fifteen children with a numerical variation of primary teeth, four developed similar anomalies in the permanent dentition.

Anodontia↗
PubMed1998

Conservative treatment of supernumerary maxillary incisor with dens invaginatus.

A case report is presented describing the treatment of a right maxillary supernumerary incisor with dens invaginatus. Extensive caries penetration into the invagination space was subsequently followed by contamination of the included tissue, but no pulp pathosis has been detected. The purpose of this case report was to present a treatment modality that enabled the preservation of pulp vitality by a conservative endodontic approach. Clinical considerations and treatment are discussed and reported.

Adult↗
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↗
PubMed1991

Development of supernumerary premolars in an orthodontic population.

Seven cases exhibiting supernumerary premolar development were detected during a 2-year period during the routine care of approximately 1,100 orthodontic patients. This 0.64% prevalence is more than twice as high as has been previously reported and represents an occurrence rate of 1 per 157 patients. This report describes the summary data for the cases detected and briefly reviews the available literature.

Adolescent↗
PubMed1999

Leopard syndrome--report of a variant case.

This case report presents a patient with Leopard syndrome, with multiple lentigines all over the body and face, ocular hypertelorism, delayed secondary sexual characteristics, mild cardiac abnormalities and supernumerary teeth. Clinical relevance of this syndrome lies in its early recognition and precautions to be taken during any invasive dental procedure, which if not performed under antibiotic prophylaxis and premedication, could lead to infective endocarditis. Additionally, a multidisciplinary approach with pediatric and medical consultants is mandatory during the management of such cases.

Abnormalities, Multiple↗
PubMedDate not supplied

[A rare case with hyperdontia in deciduous and hypodontia in the permanent dentition].

Brief literature data are presented about the incidence of the anomalies in the number of teeth: decreased--hypodontia and increased--hyperdontia, and the possibilities of their manifestation in the deciduous and later in the permanent dentition. A rare case is described with hyperdontia in the deciduous but hypodontia in the permanent dentition, namely: supernumerary II and absent 5[25/5[5 in a boy aged 4 years and 7 months. No family loaded anamnesis has been established nor any deviations in the physical and neuro-psychic development of the child. The necessity of an early and accurate diagnosis in similar cases are stressed upon as well as their follow up care with a view to intentional orthodontic treatment for the best arrangement of the permanent dentition.

Anodontia↗
PubMed2003

Personal computer-based three-dimensional computed tomographic images of the teeth for evaluating supernumerary or ectopically impacted teeth.

This study describes the use of personal computer (PC)-based three-dimensional computed tomographic (3D CT) images in the evaluation of supernumerary and ectopically impacted teeth. Three selected cases were presented as examples of the more complex cases in which 3D CT imaging added information not readily available from periapical, occlusal, or panoramic radiographs. Patients were CT scanned from the occlusal plane to the periapical region of the impacted teeth. Digital Image and Communications in Medicine CT data were transferred to a personal laptop computer using a network line. 3D volume rendering was performed using PC-based volumetric analysis software. 3D CT-reformatted imaging of the teeth is a useful way to investigate and localize supernumerary or impacted teeth. Newer software that enables this investigation using a PC provides a relatively inexpensive way to carry out such investigations, making it easier for dental practitioners to request such investigations and to view the results in real time in their own offices.

Adolescent↗
PubMed1999

Equine dental disease part 1: a long-term study of 400 cases: disorders of incisor, canine and first premolar teeth.

A review of 400 horses referred because of dental disorders showed 44 cases to suffer from primary disorders of their incisors and 11 from canine or 1st premolar teeth disorders. The remaining 345 horses suffered from primary disorders of the cheek teeth. Disorders of incisors included traumatic damage to teeth and their supporting bones, retained deciduous, displaced and supernumerary incisors; brachygnathia and abnormalities of wear, with most of the latter disorders being secondary to primary disorders of the cheek teeth Only 3 cases of apical infection of incisors were recognised. Most cases of fractured incisors responded well to conservative therapy. Retained deciduous incisors were extracted, but most cases with supernumerary and displaced incisors, or brachygnathia were treated conservatively. Most disorders of the canine and 1st premolar were developmental displacements that caused bitting problems (abnormalities of head movement associated with the bit), and these cases responded well to extraction of the displaced teeth.

Animals↗
PubMed1990

[Gardner's syndrome: report of a case].

Gardner's syndrome consists of multiple polyposis of the large intestine and soft and hard tissue tumors. The syndrome should be considered in case of supernumerary teeth, odontomas, osteoma and soft tissue tumors. These findings often precede colonic involvement. Careful attention should be directed towards the family history. The importance of this syndrome lies in the great tendency of the polyps to become malignant. Dentist and oral surgeon play an important role in the early detection of this syndrome and thus prevention of malignant degeneration of the intestinal polyps.

Adolescent↗
PubMed1989

[Usefulness of radiological examinations in the diagnosis of supernumerary teeth].

Existence of the supernumerary teeth has been found in 39 persons at the age of 8 to 69. There were 61.6% of the cases at the age when dentition exchange takes place and 38.4% of the cases during maturity. Clinical and radiological examinations have been carried out in these patients. The radiograms obtained have been found useful in detection, description and treatment of this dental anomaly.

Adolescent↗