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

NCT05435417 | Unknown DMC

• 1 other identifier: RAD 7:1-1
• Study Type: interventional
• Target: 29
• Locations: 1 country
• Sites: 1

Brief Summary

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

Conditions

Segmentation Techniques

Outcome Measures

Primary Outcomes (1)

• Linear assessment of the condyles

  Linear measurements will be calculated in millimeters by Built-in measuring tool (ruler) in the software + digital caliper on the dry mandibles

  one month

Secondary Outcomes (1)

• Volumetric assessment of the condyles

  one month

Study Arms (3)

Manual segmentation technique of CBCT images of the condyles.

EXPERIMENTAL

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

Radiation: CBCT radiation

Semiautomatic segmentation technique of CBCT images of the condyles.

EXPERIMENTAL

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.

Radiation: CBCT radiation

Actual physical measurements of the condyles on the dry mandibles

NO INTERVENTION

For linear measurements, actual physical measurements will be done on the dry mandibular condyles, using digital caliper, as mentioned before. For volumetric measurements, water displacement technique will be used. The mandibular condyle will be immersed in a graduated beaker containing water till the level of the glued gutta percha. The volume of the displaced water will be measured and will represent the actual volume of the condyle

Interventions

CBCT radiation RADIATION

CBCT scanning

Manual segmentation technique of CBCT images of the condyles.; Semiautomatic segmentation technique of CBCT images of the condyles.

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Intact dry human skulls and mandibles.

You may not qualify if:

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

Sponsors & Collaborators

• Cairo University: lead

Study Sites (1)

Faculty of dentistry, Cairo University

Cairo, Egypt

RECRUITING

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: DIAGNOSTIC
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: principle investigator

Study Record Dates

• First Submitted: June 23, 2022
• First Posted: June 28, 2022
• Study Start: July 1, 2022
• Primary Completion: November 20, 2022
• Study Completion: December 30, 2025
• Last Updated: October 6, 2022

Record last verified: 2022-10

Locations

EG (1)