The Gonial Angle as a Predictive Marker of Mandibular Fossa Depth

Ankara University

Status: Completed

Conditions: Submandibular Fossa Depth; Dental Implants; Panoramic Radiography; Cone-beam Computed Tomography; Gonial Angle

Treatments: Diagnostic Test: Gonial angle and submandibular fossa depth measurements from CBCT images

Study type: Observational

Funder types: Other

Identifiers

NCT04800003

13/1

Details and patient eligibility

About

The aim of the study is to evaluate the relationship between submandibular fossa depth and gonial angle measurements in cone beam computed tomography examinations in terms of dental implant applications. Cone-beam computed tomography images of 51 dry human mandibles were included in the study.

Full description

Gonial angle and fossa depths were determined and evaluated separately for left and right sides. Gonial angle was measured on Cone-beam computed tomography images as the angle between the tangent line drawn posterior to the border of the ramus of the mandible and the tangent line drawn to the lower border of the mandible. Determination of the submandibular fossa depth was made with a line was drawn to connect the most dislocated upper and lower points on the inner surface of the mandible in the coronal plane sections, and the length of the line drawn at a right angle from the deepest point of the fossa to this line. Measurements were made separately for left and right sides.

Enrollment: 74 patients

Sex: All

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Dry mandibles with sufficient bone integrity to make the necessary measurements

Exclusion criteria

• Dry mandibles which were dentate in the posterior region

Trial design

74 participants in 1 patient group

Dry human mandibles, selected for evaluation

Description:

51 dry mandibles with posterior region endetulism and sufficient bone integrity to make the necessary measurements were evaluated. CBCT images of the 51 dry human mandibles included in the study were obtained using the Planmeca Promex-3D (Helsinki, Finland) device in our faculty Dentomaxillofacial Radiology department. Gonial angle was measured on CBCT images as the angle between the tangent line drawn posterior to the border of the ramus of the mandible and the tangent line drawn to the lower border of the mandible. While determining the depth of the submandibular fossa, a line was drawn to connect the most dislocated upper and lower points on the inner surface of the mandible in the coronal plane sections obtained with CBCT, and the length of the line drawn at a right angle from the deepest point of the fossa to this line was measured as the depth of the submandibular fossa.

Treatment:

Diagnostic Test: Gonial angle and submandibular fossa depth measurements from CBCT images