IADR Abstract Archives
Morphological Variability in the Inferior Alveolar Canal: A CBCT Study
Objectives: The objective of the present investigation was to detect structural variations in the inferior alveolar canal in Colombian population.
Methods: Descriptive, retrospective study of 242 CBCT images from patients of a University Foundation in Bogotá - Colombia Clinics. Canal length and diameter were measured and its number, anterior loop and communications were described.
Results: The sample included 67.35% women (average age:58.25 year), 32.65 % men),(60.08 year). Length of right canal: 66.37 mm, left: 66,56 mm. Anterior loop was present in the right side in 76,86%, and in left side in 79,34. Single canal in 19.83%, multiple in 0,41%. No significant differences were found between bilateral foramen dimensions (anteroposterior p=0,594); vertical p=0,523), lingual- vestibular p=0,260).
In the present study, the prevalence of morphological variations (bifurcations) of the inferior alveolar canal was 81,4%. This percentage is higher than that found by Naitoh et al 14 (44.3% for type III bifurcation) but is lower than the value reported by Haas et al 3 in the meta-analysis of data from populations of USA, Canada, Spain, India and Chile (16.25%). This remarkable difference may be related to population variability and to the methods of detection.
Conclusions: The bilateral dimensions of the alveolar nerve canal are not equal and there is a prevalence of morphologic variations in 81.4% of the Colombian group studied. The diameter of lower foramen is higher in fully edentulous patients than in partially edentulous.
Methods: Descriptive, retrospective study of 242 CBCT images from patients of a University Foundation in Bogotá - Colombia Clinics. Canal length and diameter were measured and its number, anterior loop and communications were described.
Results: The sample included 67.35% women (average age:58.25 year), 32.65 % men),(60.08 year). Length of right canal: 66.37 mm, left: 66,56 mm. Anterior loop was present in the right side in 76,86%, and in left side in 79,34. Single canal in 19.83%, multiple in 0,41%. No significant differences were found between bilateral foramen dimensions (anteroposterior p=0,594); vertical p=0,523), lingual- vestibular p=0,260).
In the present study, the prevalence of morphological variations (bifurcations) of the inferior alveolar canal was 81,4%. This percentage is higher than that found by Naitoh et al 14 (44.3% for type III bifurcation) but is lower than the value reported by Haas et al 3 in the meta-analysis of data from populations of USA, Canada, Spain, India and Chile (16.25%). This remarkable difference may be related to population variability and to the methods of detection.
Conclusions: The bilateral dimensions of the alveolar nerve canal are not equal and there is a prevalence of morphologic variations in 81.4% of the Colombian group studied. The diameter of lower foramen is higher in fully edentulous patients than in partially edentulous.
