The Gonial Angle as a Predictive Marker of Mandibular Fossa Depth

Sponsor

Ankara University (Other)

Overall Status

Completed

CT.gov ID

NCT04800003

Collaborator

(none)

Enrollment

Location

Actual Duration (Months)

36.9

Patients Per Site Per Month

Study Details

Study Description

Brief 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.

Condition or Disease	Intervention/Treatment	Phase
Dental Implants Submandibular Fossa Depth Gonial Angle Cone-beam Computed Tomography Panoramic Radiography	Diagnostic Test: Gonial angle and submandibular fossa depth measurements from CBCT images

Detailed 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.

Study Design

Study Type:

Observational

Actual Enrollment :

74 participants

Observational Model:

Case-Only

Time Perspective:

Cross-Sectional

Official Title:

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

Actual Study Start Date :

Jul 1, 2019

Actual Primary Completion Date :

Aug 31, 2019

Actual Study Completion Date :

Aug 31, 2019

Arms and Interventions

Arm	Intervention/Treatment
Dry human mandibles, selected for evaluation 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.	Diagnostic Test: Gonial angle and submandibular fossa depth measurements from CBCT images CBCT images were obtained from dry human mandibles

Arm

Intervention/Treatment

Dry human mandibles, selected for evaluation

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.

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

CBCT images were obtained from dry human mandibles

Outcome Measures

Primary Outcome Measures

Gonial angle [2 months]
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.
Submandibular fossa depth [2 months]
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.

Eligibility Criteria

Criteria

Ages Eligible for Study:

N/A and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Dry mandibles with sufficient bone integrity to make the necessary measurements

Exclusion Criteria:

Dry mandibles which were dentate in the posterior region

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Ankara University	Ankara		Turkey

Sponsors and Collaborators

Ankara University

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

Poyzan Bozkurt, Associate Professor, Ankara University

ClinicalTrials.gov Identifier:

NCT04800003

Other Study ID Numbers:

13/1

First Posted:

Mar 16, 2021

Last Update Posted:

Mar 16, 2021

Last Verified:

Mar 1, 2021

Individual Participant Data (IPD) Sharing Statement:

Plan to Share IPD:

Studies a U.S. FDA-regulated Drug Product:

Studies a U.S. FDA-regulated Device Product:

Study Results

No Results Posted as of Mar 16, 2021