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PubMed1964

FUSED TEETH.

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Anesthesia↗
PubMed1990

[Frequency of the developmental disturbances of tooth structure].

In permanent and deciduous dentitions, the frequency of congenitally missing teeth, supernumerary teeth, conical teeth, fused teeth, germinate teeth, abnormal tubercles (basal ridge of incisor or canine, central cusps of molars, Carabelli's cusp, protostylid, and para-molar tubercles), and enamel hypoplasia (white spots, pigmentation, and enamel defects) were surveyed. Furthermore, mesio-distal and bucco-lingual dimensions of the crowns were measured and the relationship between developmental disturbances of dental hard tissue and tooth size was examined. For the deciduous dentition, the frequency of children with congenitally missing teeth, conical teeth and fused teeth was 7.2%, 1.1% and 5.3%, respectively. Enamel hypoplasia appears with the following frequency; white spots (16.0%), pigmentation (6.4%), and enamel defects (5.2%). Mesio-distal widths of the upper canine and lower lateral incisors of the children with congenitally missing teeth was significantly smaller than the standard values. For the permanent dentition, congenitally missing teeth, conical teeth and fused teeth were detected in 5.7%, 3.0%, and 0.5% of the children, respectively. The frequency of children with basal ridge, central cusps, Carabelli's cusp, protostylid, and para-molar tubercles was respectively, 1.1%, 2.6%, 7.1%, 0.3% and 1.3%. Children with central cusps or Carabelli's cusp tended to have larger crowns, while children with congenitally missing teeth or conical teeth tended to have smaller teeth. As for enamel hypoplasia, white spots were detected in 24.9% of the children, and pigmentation was in 8.1%, and enamel defects were in 9.2%. These results indicate that abnormality of tooth number and tooth morphology correlate with the tooth size and this tendency is more striking in permanent dentition than in deciduous dentition.

Child↗
PubMedDate not supplied

Management of fused supernumerary teeth in children using guided tissue regeneration: long-term follow up of 2 cases.

Surgical separation of supernumerary teeth fused to permanent incisor teethhas typically given rise to residual post surgical periodontal defects, induding loss of attachment and deep periodontal pocketing with persistent inflammation. Other complications include devitalisation of the retained tooth section, ankylosis, external and replacement resorption. A unique technique of using guided tissue regeneration has been successfully employed to promote periodontal healing, after 2 cases of surgical removal of a supernumerary tooth fused to a permanent maxillary lateral incisor tooth. In the first case, a 2-stage guided tissue regeneration technique was completed with a nonresorbable Gor-Tex membrane, and was followed up after 9 years. The second case was completed using a resorbable Vicryl membrane, in a single-stage guided tissue regenerative technique; and was followed up after 5 years.

Absorbable Implants↗
PubMed2005

[The malocclusion of primary dentition in the suburb of Chengdu: a cross-section survey].

OBJECTIVE: To reveal malocclusion of primary dentition in the suburb of Chengdu. METHODS: Cross-section survey and malocclusion rate calculation were performed. RESULTS: There are 491 children with malocclusion from total 1 279 children; the rate of malocclusion is 38.38%. The most important malocclusion in primary dentition are over bite (III degrees), anterior cross bite, edge to edge bite, early loss of deciduous teeth, fused teeth. CONCLUSION: The rate of malocclusion of primary dentition in the suburb of Chengdu is a little bit light. Much work should be done to prevent or treat the malocclusion of primary dentition.

Child↗