Evaluation of the relationship between mandibular root apices and mandibular canal in a selected Coastal Syrian population (Retrospective Radiographic study by CBCT)
Abstract
Aim of the study: This radiographic study aimed to evaluate the distances from the root apexes of (first and second mandibular premolars, the mesial and the distal roots of the first and the second mandibular molars) from the upper cortical borders of the mandibular canal in a selected coastal Syrian population, and to study the relation between these measurements and individual factors (sex and age) in both sides by cone beam computed tomography.
Materials and Methods: This retrospective radiographic study included 150 CBCT scans from 150 individuals, the age raged between 18 and 75 years old, the age was categorized into 3 subgroups: Young ages (18-35) , Middle ages (36-55) , Advanced ages (56-75), Cs 3D imaging software was used to evaluate the scans, Data was analyzed by IBM SPSS Statistics 25.
Results: This study showed that the mean of the distances from the root apexes of first and the second mandibular premolars, the mesial and the distal of the first and second mandibular molars from the upper cortical borders of the mandibular canal in the right side: ( 1.99±0.702 , 2.47±0.714 , 4.06±0.571 , 4.56±0.570 , 3.56±0.569 , 5.15±0.832 ) , and in the left side ( 2.09±0.703 , 2.57±0.714 , 3.86±0.571 , 4.46±0.569 , 3.46±0.565 , 5.06±0.827 ) respectively, and the females showed smaller means than males for all these distances which was statistically significant (P-value<0.05) , and the young ages showed smaller means than the other age subgroups for all these distances which was statistically significant (P-value<0.05).
Conclusions: by the limitations of this study, we could conclude that the apex of distal root of the second mandibular molar is the nearest to the upper border of the mandibular canal, whereas the apex of the first mandibular premolar was the furthest. And both the sex and the age have an effect on all these distances which was statistically significant.
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