Assesment of the Accuracy of Surgical Guide Designed From CBCT With Different Voxel Sizes

Not Applicable

• Conditions: Accuracy of Surgical Guide in Implants
• Interventions: Other: Surgical guide

• Registration Number: NCT03389594
• Lead Sponsor: Cairo University

Brief Summary

Accuracy Of CBCT affected by many factors. On of the most factors the affect the image quality is voxel size. Larger voxel size give a higher accuracy of the images but with higher radiation dose.

The study is to assist the accuracy of surgical guides designed from CBCT with different voxel sizes .

Detailed Description

Accuracy Of CBCT affected by many factors. On of the most factors the affect the image quality is voxel size. Larger voxel size give a higher accuracy of the images but with higher radiation dose.

The study is to assist the accuracy of surgical guides designed from CBCT with different voxel sizes (voxel size 0.4mm \& 0.2mm)

Study Timeline

• Study Start: 2017-07-01
• Status Verified: 2017-12
• Study First Submitted: 2017-12-13
• Study First Submitted QC: 2018-01-02
• Last Update Submitted: 2018-01-02
• Study First Posted: 2018-01-03
• Last Update Posted: 2018-01-03
• Primary Completion: 2018-03-15
• Study Completion: 2018-04-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 8

Inclusion Criteria

• partially edentulous patients seeking for dental implant
• Bucco-lingual width more than 6 mm
• Medically free patients

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Exclusion Criteria

• patients with thin ridges that may need augmentation
• patients with systematic diseases that may affect bone quality
• completely edentulous patients
• patients with limited mouth opening

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Surgical guide designed from voxel size 0.4m	Surgical guide	Surgical guide will be designed based on CBCT voxel size 0.4 mm

Primary Outcome Measures

Name	Time	Method
Angular deviation	Immediate post operative	Evaluation of angular deviation of virtual implant and actual implant positions according to voxel size difference (0.2 mm versus 0.4 mm)
Linear deviation	Immediate post operative	Evaluation of linear deviation of virtual implant and actual implant positions according to voxel size difference (0.2 mm versus 0.4 mm

Trial Locations

Locations (1)

Cairo University; 🇪🇬 Cairo, Egypt