Assessment of the Accuracy of Surgical Guide Designed From Dental Model Optical Scan Versus Impression Inversion With Markers Techniques in Computer Guided Implantology. Randomized Clinical Trial.

Not Applicable

• Conditions: Accuracy of Surgical Guide in Computer Guided Implantology
• Interventions: Other: Surgical guide designed from Impression inversion with markers

• Registration Number: NCT03367949
• Lead Sponsor: Cairo University

Brief Summary

Dental model cast accuracy can be affected by many variables as tray material, impression material and time elapsed before pouring the impression. All these factors would affect the accuracy of the surgical guide

Impression inversion with markers technique avoids the dimension changes that may happen from pouring of the dental model cast. Also it saves time as no need for optical scan of the model cast and for scan appliance even in cases of multiple restoration. Adding markers to impression tray ensures an accurate merge even if the patient has restored dentition that may cause scatter during the CT/CBCT scan.

This study will is for Assessment of the Accuracy of Surgical Guide designed from Dental Model Optical Scan versus Impression Inversion with Markers techniques in Computer Guided Implantology.

Detailed Description

Not available

Study Timeline

• Study Start: 2017-07-01
• Status Verified: 2017-12
• Study First Submitted: 2017-12-05
• Study First Submitted QC: 2017-12-05
• Last Update Submitted: 2017-12-08
• Study First Posted: 2017-12-11
• Last Update Posted: 2017-12-12
• Primary Completion: 2018-03-15
• Study Completion: 2018-04-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

1. Partially Edentulous patients seeking for dental implants

2. Patients with Bucco-lingual bone thickness more than 6 mm allowing flapless implant placement.

3. Medically free patients.

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Exclusion Criteria

1- Patients with thin ridges. 2- Patients with systemic disease that may affect bone quality. 3- Patients with poor oral hygiene and active periodontal diseases. 4- Anatomical situations requiring regenerative procedure. 5- Completely edentulous patient 6-Patient with limited mouth opening

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Accuracy of surgical guide from Impression inversion Technique	Surgical guide designed from Impression inversion with markers	-

Primary Outcome Measures

Name	Time	Method
Evaluation of angular deviation of virtual implants and actual implant position according to scanning protocol "optical scan of the model" Versus "impression inversion" using CBCT.	Immediate post operative

Secondary Outcome Measures

Name	Time	Method
Evaluation of linear deviation of virtual implants and actual implant position according to scanning protocol " optical scan of the model" Versus " impression inversion " using CBCT	Immediate post operative

Trial Locations

Locations (1)

Faculty of Dentistry , Cairo university; 🇪🇬 Cairo, Egypt