Conductos linguales accesorios y su relacion con la zona de colecta de hueso autógeno en la región mentoniana.

INTRODUCTION: The involvement of the Accessory Lingual Ducts, with their corresponding neurovascular contents, during the collection of bone blocks in the chin area may be the cause of neurosensory and hemorrhagic complications. OBJECTIVE: The objective of this study is to determine, through the study of conical beam tomographic images of the anterior region of the jaw, the anatomical characteristics of these bone ducts within the boundaries of this autogenous bone donor zone in that area. METHODOLGY: 50 conical beam tomographic examinations of the chin region . In each one they were identified and analyzed, when present, in their anatomical characteristics of the Accessory Lingual Ducts in the midline. to determine how deep they are and if it is possible to obtain bone blocks 4 mm and 6 mm thick without damaging their integrity. The values ​​were compared between groups according to sex, age and examined side. RESULTS: When the chin line was used to obtain bone tissue, the Accessory Lingual Ducts were affected from 11.7% to 52% depending on the thickness, from 04 or 06 mm, of the collected block. No significant variations were detected according to the sex, age or side studied. Conclusion: when the Accessory Lingual Ducts are present, the Anterior Jaw region should not be considered a safe surgical zone. The planning of the collection of bone blocks in the Mentonian Region should be carried out using exclusively tomographic images of appropriate quality.