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At least 127 records · Page 7Linked to original sources
PubMedDate not supplied

Inherited dental anomalies and abnormalities.

A considerable body of evidence exists to suggest that genes play a dominant role in the etiology of the dental anomalies reviewed. It has been postulated that some kind of genetically controlled interrelationship may exist for some of these coincidental dental anomalies, as evidenced by their frequency of association. It has also been speculated that a "common genetic defect" may give rise to different phenotypic manifestations, including missing, malformed, and even ectopic and malpositioned teeth. The maxillary teeth that develop in the critical marginal areas of the dental lamina, namely the lateral incisors, canines and second premolars, seem most susceptible. Such dental anomalies may be symptoms of an inheritable developmental disturbance of tooth structures. Knowing that these dental anomalies can be inherited, a familial history and early clinical or radiographic detection of one anomaly, could alert parents and clinicians to the high likelihood of detection of other defects in the same individual and similar defects in other family members. Early diagnosis is important so that interceptive pediatric and orthodontic opportunities in relation to missing, malformed and ectopically erupting teeth are not overlooked. Further family studies are necessary to reveal the mode of inheritance of some of these dental anomalies and twin studies comparing monozygous and dizygous twins would enable an estimation of the extent of their inheritance.

Anodontia↗
PubMed1996

Ectopically erupting mandibular first permanent molar: treatment of a case.

This case report presented a rare case of irreversible ectopic eruption of right mandibular first permanent molar in a 6-year-old boy. Distal root resorption of primary second molar was found during routine radiographic examination. Early treatment of ectopically erupting permanent first molar was considered in favor of preventing space loss. Using a modified Humphrey appliance as the correcting appliance, the ectopic eruption of permanent first molar had been successfully uprighted and retained.

Child↗
PubMed2002

Restoration and retention of maxillary anteriors with severe root resorption.

BACKGROUND: The authors describe the treatment of three patients who had severe apical root resorption of maxillary lateral incisors caused by ectopically erupting canines. Ectopically erupting canines derive from a normal path of eruption and may cause resorption of the adjacent teeth. CASE DESCRIPTION: The authors present the three cases of severe root resorption caused by ectopically erupting canines. They then discuss various prosthetic options; the indications, advantages and disadvantages of various treatment modalities; the long-term retention and esthetic concerns of the patients; and the inherent limitations of restorative treatment. CLINICAL IMPLICATIONS: Increased tooth mobility and long-term retention are significant concerns in cases of patients who have severe root resorption. Attaining stability with lingual splinting can cause esthetic problems. An interdisciplinary approach is necessary to provide optimal care for the patient.

Child↗
PubMed2001

Endoscopic removal of an ectopic third molar obstructing the osteomeatal complex.

We report a rare case of an ectopic third molar at the level of the osteomeatal complex. A 21-year-old man came to us with a left-sided nasal obstruction of 2 years' duration. Computed tomography of the paranasal sinuses revealed that an aberrant tooth was obstructing the osteomeatal complex and bulging into the ethmoid infundibulum. Opacity of the entire left maxillary sinus indicated the presence of an associated cystic formation. A transnasal endoscopic sinus technique was employed to create a large middle meatal antrostomy and to remove the tooth as well as the cystic contents and cyst wall. Pathologic analysis revealed that the cyst was dentigerous. After recovery from surgery, the patient resumed nasal breathing. The endoscopic surgical approach used in this case caused less morbidity than do the more common methods (e.g., the Caldwell-Luc procedure) of removing ectopic teeth from the sinus.

Adult↗
PubMedDate not supplied

Management of ectopically erupting first permanent molars.

A simple method of treating these teeth is described. The authors describe the use of orthodontic brackets, .017 twist wire, and compressed open coil springs. Correction is accomplished in six to eight weeks with minimal adjustments required.

Child, Preschool↗
PubMed1998

Ectopic eruption of the first permanent molars: prevalence and etiologic factors.

The purpose of this research was to study the prevalence of ectopic eruption of the first permanent molars and possible etiologic factors. A group of 4,232 Thai students, from 6 to 9 years old, was examined. The prevalence of ectopic eruption of the first permanent molars in the subjects was 0.75%. Both the severity of the ectopic eruption and the amount of root resorption on the second primary molars were more pronounced in the maxilla than in the mandible. The important etiologic factors were the eruption path of the first permanent molars relative to reference lines and the size of the mandibular second primary molars. The amount of proximal caries did not seem to affect the prevalence of ectopic eruption.

Analysis of Variance↗