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Results for “Tooth Eruption, Ectopic”

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At least 865 records · Page 48Linked to original sources
PubMed1999

The etiology of palatal displacement of maxillary canines.

OBJECTIVES: To test the hypothesis that palatal displacement of the maxillary canine is completely under genetic influence. DESIGN: A randomized controlled design studied cases affected by a severe expression of lateral incisor anomaly on one side and by milder expression of the same anomaly on the other. Comparison of frequency of occurrence of unilateral palatally displaced canine measured in each. Each side acted as control for the other within the same individual. SETTING AND SAMPLE POPULATION: The Departments of Orthodontics of the Universities of Jerusalem and Tel Aviv and in private practice. From approximately 12,000 consecutively treated patients, all those exhibiting an anterior maxilla with a missing lateral incisor on one side, a peg-shaped or reduced lateral incisor on the other, and a palatally displaced canine (n = 19). OUTCOME MEASURE: Missing lateral incisors, peg-shaped, and reduced lateral incisors (all genetically determined characters) have been shown to be associated with palatal displacement of the canine. The canine displacement is presumed by some authorities to be similarly genetically determined. If this is so, then the impacted canine should occur with equal frequency on either side in the patient with a missing lateral incisor on one side and a peg-shaped or reduced lateral incisor on the other. RESULTS: The canine aberration occurred far more frequently on the side of the diminutive lateral incisor. CONCLUSION: There is an environmental factor involved in the palatal displacement of maxillary canines.

Anodontia↗
PubMed1986

Recurrent swelling of the upper lip. A case report.

Recurrent swelling of the lips may be due to a number of causes. A case is presented of recurrent swelling of the upper lip caused by trauma from a displaced and apically dilacerated 1. There was abnormal development of 32 which were also displaced although 123 appeared unaffected. The surgical, endodontic and orthodontic management of this problem is discussed.

Child↗
PubMed1987

Tooth resorption associated with the eruption of maxillary canines.

Six cases of root resorption of lateral incisors, associated with buccally displaced maxillary canines are presented. In each case, the clinical appearance is described followed by a discussion drawing attention to the possible common features and the importance of a detailed radiographic investigation.

Adolescent↗
PubMed1998

Heterotopic polyodontia in a cynomolgus monkey.

A case of heterotopic polyodontia was detected in a 6-year-old male laboratory cynomolgus monkey. A heterotopic tooth had erupted through the right maxillofacial area at the side of the nose, with a crustated surface. Macroscopically, the tooth was not connected with the right parotid. Radiography and histopathology of the transverse section of the lesion showed almost normal propriodentium containing alveolar bone and partial continuity with the maxillary bone. We believe this is the first case description of heterotopic polyodontia in a monkey.

Animals↗
PubMed1989

A novel panoramic artefact.

A case is presented of a phantom tooth in the anterior maxilla on a panoramic radiograph which proved to be an artefact due to poor positioning.

Adolescent↗
PubMed2005

Prevalence of tooth transpositions and associated dental anomalies in a Turkish population.

OBJECTIVES: The aims of this study were to determine the prevalence of tooth transposition in a Turkish population, possibly associated dental anomalies and whether side laterality, gender expression or genetic influence exist or not. METHODS: Panoramic radiographs of 5486 patients referred to Department of Oral Diagnosis and Radiology, University of Suleyman Demirel between April 2003 and March 2004 were examined retrospectively. All patients with tooth transpositions were recalled for detailed clinical examination and medical history. Age, sex, history (trauma), location of transposition, and associated congenital dental anomalies were recorded with details. RESULTS: 22 transpositions were found in 21 of 5486 (0.38%) patients. The most frequently seen transposition was maxillary canine-lateral incisor (1.64/1000), secondly maxillary canine-first premolar (0.91/1000) and maxillary canine-second premolar (0.18/1000) was the least frequently seen one. The frequencies of right and left side occurrence were equal (11/11). Each sex was affected similarly (11 males, 10 females). CONCLUSIONS: The prevalence of tooth transposition was 0.38% in a Turkish population. Maxillary canine-lateral incisor transposition was found to have a higher frequency than maxillary canine-first premolar transposition. Maxillary canine-second premolar transposition that had not been previously reported in the literature was observed in one of our cases. Transpositions had similar frequencies in both sexes.

Adolescent↗
PubMed2004

Mandibular lateral incisor-canine transposition: a case report.

Tooth transposition is a rare dental anomaly which is characterized by an interchange in the position of two adjacent permanent teeth on the same side of the dental arch. Tooth transpositions occur less often in the mandibular arch than in the maxilla and with less variety. Early diagnosis and detection of a developing transposition is based on both clinical and radiographic examination. When detected early, interceptive treatment may resolve the developing problem. This paper discusses a patient who presented with a mandibular permanent lateral incisor-canine transposition.

Child↗
PubMed1980

Transposition of canines.

Eleven cases of canine transposition, in both the maxillary and the mandibular arches, have been reported. Canines were involved in every case. Alignment of the teeth in their transposed position or orthodontic movement to their normal position in the arch are alternatives in treatment. However, should an involved tooth be seriously affected by caries, developmental defects, or trauma, extraction may be the preferred treatment, with alignment of the remaining tooth and closure of the space.

Adolescent↗
PubMed1993

Maxillary arch dimensions after palatal surgery and implantation of poly-(L-lactic) acid membranes in beagle dogs.

The effect of implantation of poly-(L-lactic) acid membranes after palatal surgery on dentoalveolar development was investigated. Beagle dogs were randomly assigned to four experimental groups and a control group. In the experimental groups, a soft tissue defect was created in the medial region of the palate by excising a standardized elliptical mucoperiosteal flap at 12 weeks of age. This defect was closed according to the Von Langenbeck technique, leaving two areas of denuded bone. Poly-(L-lactic) acid membranes were implanted on the denuded bony areas either directly or 3 weeks after surgery. Group L and LS served as sham groups. Dental casts were made at regular intervals until 25 weeks of age, and maxillary arch dimensions were studied. Dental arch dimensions in the deciduous dentition of the experimental groups were not markedly disturbed, but after transition of teeth, mainly transversal maxillary arch dimensions in the premolar region were reduced. It was concluded that implantation of poly-(L-lactic) acid membranes after palatal surgery in Beagle dogs did not prevent iatrogenic disturbances of dentoalveolar development under conditions used in this study.

Analysis of Variance↗
PubMed2002

Tooth eruption into the newly generated bone induced by recombinant human bone morphogenetic protein-2.

OBJECTIVE: The purpose of this study was to observe tooth eruption pattern into the newly generated bone induced by recombinant human bone morphogenetic protein-2 (rhBMP-2). METHOD: Three 12-week-old beagle dogs were used. Following wound healing of the extracted maxillary third deciduous incisor at the age of 13 weeks, a resection of maxillary alveolar bone (8 mm by 8 mm by 8 mm) was carried out, accompanied by extraction of the maxillary second incisor tooth germ. The rhBMP-2 (5 microgram/100 microL or 10 microgram/100 microL) was implanted in the resected area. A group that was not implanted after resection and a nonresected group were used as controls. Serial changes of the eruption pattern of the maxillary third incisor in the implanted area were observed radiographically. Oxytetracycline and calcein were employed as bone markers. Nine weeks after the implantation, the animals were sacrificed. The samples were observed histologically and analyzed using peripheral quantitative computerized tomography to acquire the bone mineral density (BMD). RESULTS: In the rhBMP-2 (5 microgram/100 microL)-treated group, histological findings and the BMD of the newly generated bone were almost same as in the nonresected group. The maxillary third incisor erupted through the implanted area. However, in the rhBMP-2 (10 microgram/100 microL)-treated group, more osteoinductive activity and significantly higher BMD were observed in the newly generated bone. The maxillary third incisor erupted mesially so as to avoid this implanted area. CONCLUSION: Results showed that bone remodeling and tooth eruption through the newly generated bone appear to be dose dependent. Accordingly, proper dosage of rhBMP-2 should be determined for successful clinical application.

Absorbable Implants↗
PubMed2007

Maxillary canine--first premolar transposition.

Tooth transpositions present at a relatively low incidence in the world population and primarily affect maxillary canines and premolars. Treatment of this disturbance should take into account aspects such as facial pattern, age, malocclusion, tooth-size discrepancy, stage of eruption, and magnitude of the transposition. Mechanics for correction should be entirely individualized, reducing the risks and adverse effects. Practitioners often select simpler options, indicating extraction of permanent teeth, which is an irreversible procedure that may bring about damages to the patient. This study presents a case report and treatment of unilateral transposition of maxillary canine and premolar with repositioning of affected teeth to their respective normal positions.

Bicuspid↗