The relation between the distance from mandibular retromolar foramen to mandibular angle and lower third molar using panoramic radiographs

Abstract

Background: Third molars are the last to erupt in the permanent teeth series. These teeth are the most likely to be impacted this research aims to evaluate whether the distance between mandibular retromolar foramen and mandibular angle renders different results in case of absence or presence of lower third molar in both genders.Methods: A respective study conducted on 186 the distance between mandibular retromolar foramen and mandibular angle were examined on Digital panoramic radiograph (DPR). The radiographs were grouped according to Absence or presence of left lower third molar and subject gender. A logistic regression model was created using the statistically significant data.Results: The lower third molar impaction on the distance between mandibular retromolar foramen and mandibular angle was not significantly different between mean groups (absence and presence) when gender is disregard. The distance between the two was significantly increased in the male subgroup.Conclusion: The relation between the distance between mandibular retromolar foramen and mandibular angle and third molar using panoramic radiographs showed no fundamental difference in the distance between mandibular retromolar foramen and mandibular angle in case of absence or presence of lower third molar when gender is disregard.

Morphometric Analysis of Retromolar Triangle in Eastern Indian Population

“…Table 4, exhibits this study's finding that on the right side the mean distance between the 3 rd molar and RMF is 4.3±2.3, range varying from 1.08mm to 11.30mm. Mean distance on the left between the 3 rd molar and RMF is 4.6 ±2.3mm, range varying from 1.18mm to 9.81mm, which is equivalent to recently published literatures [7,8,11,17]. This close proximity of RMF with 3rd molar especially "near the base" variant; may produce postoperative hematomas secondary to blood vessel rupture and injury to the structures traversing the RMF during 3 rd molar extraction.…”

“…Retromolar canal (RMC) is considered as a bifurcated variation of the mandibular canal initiating as a single foramen or multiple foramina into the RMT dividing above the canal and traverses antero-superiorly within the bone. This RMF give passage to the retromolar accessory branches which supply the tissues at the retromolar trigone and beyond [7,8].…”

“…A prominent issue is the nomenclature and categorization of RMF/RMC as reported in various literatures. Some authors considers that RMF/RMC as the bifid or trifid collateral of the main conduit, the mandibular canal, initiating at the mandibular canal and terminating at the retromolar trigone (RMT) [6][7][8][9][10][11][12][13][14][15][16][17][18]. While, Other researchers imply that RMC is as an unique separate entity, emphasizing its clinical relevance [19,20].…”