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Process of ectopic tooth formation in the maxillary sinus: follow-up observation of one case
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Process of ectopic tooth formation in the maxillary sinus: follow-up observation of one case
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Journal Article
Process of ectopic tooth formation in the maxillary sinus: follow-up observation of one case
2019
Overview
Objective
This study was performed to investigate the process of ectopic tooth formation.
Methods
A patient with an ectopic tooth was followed for 6 years. The tooth size and mineralization were evaluated by paranasal sinus computed tomography every 3 years.
Results
The ectopic tooth was present in the nasal crest of the maxilla and did not change significantly during the 6-year follow-up period. However, the patient developed a new ectopic tooth in the maxillary sinus (ETm). This tooth, located in the posterior wall of the left maxillary sinus, initially appeared as a small region of soft tissue on computed tomography. After 3 years, the area of mixed density had significantly increased, and some of it had significantly mineralized to form an ETm. After 6 years, the ETm had further mineralized and enlarged in situ. The width between the left and right sides of the ETm in 2018 (9.08 ± 2.09 mm) was significantly larger than that in 2015 (7.51 ± 2.18 mm), indicating that ETm formation is a gradual process of mineralization.
Conclusion
Ectopic teeth can gradually form by in situ mineralization after adolescence, suggesting that ectopic teeth are genetically regulated and result from a programmed formation process occurring at a specific time point.
Publisher
SAGE Publications,Sage Publications Ltd,SAGE Publishing
