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.

Study Overview
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Brief Summary
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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.

Official Title
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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.

Conditions
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Accuracy of Surgical Guide in Computer Guided Implantology

Intervention / Treatment
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* Other: Surgical guide designed from Impression inversion with markers


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Partially Edentulous patients seeking for dental implants Patients with Bucco-lingual bone thickness more than 6 mm allowing flapless implant placement. Medically free patients. - 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 -
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Accuracy of surgical guide from Model optical scan<br> | |
| Active Comparator: Accuracy of surgical guide from Impression inversion Technique<br> | Other: Surgical guide designed from Impression inversion with markers<br>* Rather than using optical scan of the cast , We will use impression inversion technique with VPS impression and adding CBCT Markers on the tray<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Surgical guide, impression inversion, stereolithographic surgical guides