MICROSCOPIC ASPECTS IN DENTOALVEOLAR ANKYLOSIS OF PERMANENT TEETH

Abstract

Dentoalveolar ankylosis represents the fusion of cement to the alveolar bone with obliteration of the periodontal space. The aim of the study is to describe the macroscopic and microscopic appearance of dentoalveolar ankylosis in order to establish the nature of the connection between the dental roots and the alveolar bone. Material and methods: The study was performed on 7 extracted teeth, one monoradicular (canine) and six pluriradicular teeth in which at the time of extraction the presence of an alveolar bone fragment attached to the root was observed. For macroscopic identification of tooth ankylosis lesions, we used photographs made with Canon DSLR 600EOS. Evaluation of dentoalveolar ankylosis lesions was performed by microscopic analysis using the Nikon SMZ745T stereomicroscope recommended for both industrial and biomedical applications. Results and discussions: Microscopic analysis revealed features of the root surface affected by ankylosis, features of the bone tissue attached to the root surface and the nature of the connection between the two components of ankylosis. Conclusions: The microscopic study established that there are areas where ankylosis is complete with the disappearance of periodontal space and areas where ankylosis is incomplete.

Keywords

• dentoalveolar ankylosis
• microscopic aspect