Effect of Segmentation Techniques (Manual Versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle Using CBCT

Not Applicable

Recruiting

• Conditions: Segmentation Techniques
• Interventions: Radiation: CBCT radiation

• Registration Number: NCT05435417
• Lead Sponsor: Cairo University

Brief Summary

Effect of Segmentation Techniques (Manual versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle using CBCT

Detailed Description

It will be used to segment the mandibular condyle and asses its volumetric and linear measurements. Therefore, the accuracy of the segmentation techniques of the mandibular condyle will be determined

Study Timeline

• Study First Submitted: 2022-06-23
• Study First Submitted QC: 2022-06-23
• Study First Posted: 2022-06-28
• Study Start: 2022-07-01
• Status Verified: 2022-10
• Last Update Submitted: 2022-10-05
• Last Update Posted: 2022-10-06
• Primary Completion: 2022-11-20
• Study Completion: 2025-12-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 29

Inclusion Criteria

• Intact dry human skulls and mandibles.

Exclusion Criteria

• Presence of fracture, pathological lesions, or skeletal deformities in the condylar area.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Semiautomatic segmentation technique of CBCT images of the condyles.	CBCT radiation	Using the water shed built in tool, first a brush of small size will be used to demarcate the outline of the condyle by the 'background' option in all planes. Then using the 'foreground' option, a brush of larger size will be used to shade the condylar area. The software built in tool 'expand water shed' will be used to include the whole condyle. At last, 'create surface' option will be used to create the segmented 3D volume.
Manual segmentation technique of CBCT images of the condyles.	CBCT radiation	Using the manual edition built in tool, first a brush of small size will be used to demarcate the outline of the condyle in the sagittal cuts. Then shading the demarcated condylar area with a brush of larger size in each slice. The outline of the condyle will be refined on all cuts. The software built in tool 'create surface' will be used to create the segmented 3D volume

Primary Outcome Measures

Name	Time	Method
Linear assessment of the condyles	one month	Linear measurements will be calculated in millimeters by Built-in measuring tool (ruler) in the software + digital caliper on the dry mandibles

Secondary Outcome Measures

Name	Time	Method
Volumetric assessment of the condyles	one month	For volumetric measurements, the volume of the segmented condyle, either by manual or semiautomatic segmentation technique, will be automatically calculated by the software. Volumetric measurements will be calculated in cubic millimeters.

Trial Locations

Locations (1)

Faculty of dentistry, Cairo University; 🇪🇬 Cairo, Egypt