Hyperplasia of Pericoronal Fibrous Connective Tissue Resulting in Impaction of the Bilateral Secondary Molars of Both Mandible and Maxilla, a Case Report
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- Takeda Yasunori
- Department of Oral Pathology and Pedodontics, School of Dentistry, Iwate Medical University
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- Kuroda Masafumi
- Department of Oral Pathology and Pedodontics, School of Dentistry, Iwate Medical University
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- Yahata Chikako
- Department of Oral Pathology and Pedodontics, School of Dentistry, Iwate Medical University
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- Amari Eiichi
- Masafumi Kuroda
Bibliographic Information
- Other Title
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- 歯冠周囲線維性結合組織の過形成により上下顎の左右第二大臼歯の埋伏をきたした一症例
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Abstract
This paper concerns a case of hyperplasia of the pericoronal fibrous connective tissue resulting in impaction of the bilateral secondary molars of both the mandible and maxilla. The patient was a 15-year-old boy with retarded eruption of the secondary molars discovered during a loutine dental examination. His family and past histories were non-contributory. Upon examination, nonremarkable changes in general and facial finding were found. X-ray examination revealed well circumscribed and wide radiolucent lesions around the crowns of the impacted secondary molars, and the clinical diagnosis of a follicular cyst (dentigerous cyst) of the secondary molar region was made. Surgical findings revealed that the pericoronal lesions of the bilateral secondary molars of the mandible and maxilla were composed of grayish white soft tissue, and no cystic spaces were found in any of the lesions. Histopathological examination showed that marked hyperplasia of the pericoronal fibrous connective tissue of the secondary molars, i. e., proliferation of the collagenous fibrous tissue wi th dense and irregular arrangement, and islands of reduced odontogenic epithelia were scattered in the fibrous tissue. Based on these histopathological findings, this case was diagnosed pathologically as hyperplasia of the pericoronal fibrous connective tissue of the secondary molars. The pathological cause of hyperplasia of the pericoronal fibrous connective tissue was considered, but no final conclusion was reached.
Journal
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- The Japanese Journal of Pediatric Dentistry
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The Japanese Journal of Pediatric Dentistry 24 (4), 777-780, 1986
The Japanese Society of Pediatric Dentistry