Bony ossicle in the maxillary sinus containing a tooth

Ectopic teeth with disparate migration: A literature review and new case series

Purpose

Ectopic eruption can be defined as the emergence of a tooth in an abnormal location, where the tooth does not follow its typical eruption pathway. While ectopic eruption within the dentate region is well-documented in the literature, ectopic eruption in non-dentate regions is relatively rare. This study aimed to report 6 cases of ectopic teeth and present a systematic review of the English-language literature on ectopic teeth, emphasizing demographic characteristics, radiographic features, potential complications, and treatment options.

Materials and Methods

A literature search was conducted using the PubMed, Medline, Web of Science, and Cochrane databases. The demographic data and radiographic findings of patients presenting with ectopic teeth were recorded.

Results

The literature review yielded 61 cases of ectopic teeth, with patients ranging in age from 3 to 74 years. The findings from these previously reported cases demonstrated that the most common location for ectopic teeth was the maxillary sinus, which is consistent with this case series. The Pearson chi-square test was performed to evaluate the correlation between age and location of ectopic teeth, and the results were found to be statistically significant (P<0.05). However, no statistically significant relationship was observed between sex and the location of ectopic teeth.

Conclusion

The distinct features of these cases warrant reporting. This study presents the first case of supernumerary teeth in the condyle without any associated pathosis. Another notable characteristic is the pre-eruptive resorption of 2 inverted supernumerary teeth ectopically located in the palate, which predisposes to sinus opacification.

Heterotopic ossification in the maxillary sinus

We report a case of heterotopic ossification of the maxillary sinus in a 30-year-old female who was treated surgically in our department. Heterotopic ossification (HO) refers to the formation of mature lamellar bone in nonosseous tissues. We present the radiographic and computed tomographic appearance, and discuss the surgical treatment, histopathologic results, and differential diagnosis. To the best of our knowledge, no other case of HO of the maxillary sinus has been reported yet.

Ectopic third molar in condylar region

Inclusion of the third molar is relatively frequent in oral and maxillofacial surgery, but ectopic placement is quite rare. Only a few cases of third molar inclusion in the condyle region of the mandible have been reported. Presented here are two cases of ectopic location of a third molar in the condyle of the mandible. A description of the management of this pathology through open surgery and extraction of the molar is given, while preserving the anatomy of the condylar region.