Evaluation of the bone anatomy of the anterior region of the mandible using cone beam computed tomography

Abstract

Background Hemorrhages, mouth floor edema and tongue elevation are complications related to surgical procedures in the anterior region of the mandible. Objective The objectives of this study were to evaluate the presence and location of the lingual foramen in the anterior region of the mandible and to evaluate mandibular morphology using cone beam computerized tomography (CBCT). Material and method The mandible’s morphology and the location, diameter and height of the lingual foramina were analyzed using the midline and the mental foramen as references, in 278 CBCT. Result 88% of the sample had a midline lingual foramen, totaling 408 foramina, with a mean diameter of 0.93 mm. Foramina in the lingual region between the midline and mental foramina were detected in 75% of the sample, with a mean diameter of 0.807 mm. There was no positive correlation between the presence of lingual foramina in the lateral or in the midline regions (r = -0.149; p = 0.013). In the midline region, the type I mandibular shape was predominant (96%), and type III was predominant in the lateral regions. Conclusion Considering the prevalence of these structures and their clinical relevance in potential surgical complications, it is important to carefully analyze the anterior region of the mandible during surgical planning.

Labial and Mental Foramina of the Mandible: A Cone Beam Computed Tomography Study

“…In our study five cases showed higher positions of LaF. Of course, possibility of nutrient canals which was postulated by many researchers should be considered [17][18][19]. Evidencebased studies do not clearly show this.…”

“…It was previously concluded that the MPC of the mandible, rarely found in humans, is seen in all specimens in Macaca fascicularis because they have no mental protuberance [16]. A high prevalence of these structures was found in many reports [11,12,17,18].…”

Investigation the anterior mandibular lingual concavity by using cone-beam computed tomography

“…However, in some studies declared that the dentate status and bone morphology are not related [33,34]. The differences between the lingual and buccal concavity prevalence values reported in different studies can be explained with the racial and class differences and dentate status.…”

Assessment of anterior loop of mandibular canal and its implication in implant therapy

“…CBCT scans acquired in a standardized manner maintaining the cephalostat settings, keeping the patient's head positioned such that the occlusal plane was parallel to the floor and median sagittal plane perpendicular to the floor, were to be included. [ 21 ] Scans should have been acquired using Orthophos SL 3D Dentsply Sirona (Dentsply Sirona, Germany), time of exposure 14.1 s with 6 mA electric current and 80–85 kV. Scans of low diagnostic quality showing radiolucent and/or radiopaque lesions in the region of mental foramen were to be excluded.…”

“…Scans of low diagnostic quality showing radiolucent and/or radiopaque lesions in the region of mental foramen were to be excluded. [ 21 22 ] The presence of fracture line, supernumerary or unerupted teeth, and metal artifacts was also excluded owing to compromised acuity. [ 21 22 ]…”