The Gonial Angle as a Predictive Marker of Mandibular Fossa Depth

Dental Implants Clinical Trial

Official title:

The Gonial Angle as a Predictive Marker of Mandibular Fossa Depth on Panoramic Radiographs: A Diagnostic Accuracy Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04800003
• Other study ID #: 13/1
• Status: Completed
• Start date: July 1, 2019
• Est. completion date: August 31, 2019

Study information

• Verified date: March 2021
• Source: Ankara University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 74
• Est. completion date: August 31, 2019
• Est. primary completion date: August 31, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

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

Exclusion Criteria:

• Dry mandibles which were dentate in the posterior region

Related Conditions & MeSH terms

• Cone-beam Computed Tomography
• Dental Implants
• Gonial Angle
• Panoramic Radiography
• Submandibular Fossa Depth

Intervention

Diagnostic Test:
• Gonial angle and submandibular fossa depth measurements from CBCT images
CBCT images were obtained from dry human mandibles

Locations

Country	Name	City	State
Turkey	Ankara University	Ankara

Sponsors (1)

Lead Sponsor	Collaborator
Ankara University

Country where clinical trial is conducted

Turkey, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gonial angle	Gonial angle and fossa depths were determined and evaluated separately for left and right sides. 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.	2 months
Primary	Submandibular fossa depth	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. These measurements were noted as 'millimeters' separately for left and right sides.	2 months