Marginal Bone Changes of CAD/CAM Implant Supported Screw-retained and Screw-mented Metal Frameworks

Study Overview
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Brief Summary
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compare CAD/CAM implant supported screw-retained metal frameworks based on actual versus screw-mented ones based on virtual implant position regarding marginal bone changes.

Detailed Description
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patients with at least three missing teeth will be recruited and randomly assigned into two parallel groups. both groups will receive three implants based on planned implant positions and then one group will receive screw retained CAD CAM restoration with conventional impression technique while the second group will receive screw-mented CAD CAM restoration based on planned implant positions.

Official Title
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Marginal Bone Changes of CAD/CAM Implant Supported Screw-retained Metal Frameworks Based on Actual Versus Screwmented Ones Based on Virtual Implant Position: A Randomized Clinical Stud

Conditions
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Patient Satisfaction, Bone Loss

Intervention / Treatment
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* Procedure: screwmented metal frameworks


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Kennedy class I, II Or IV cases. Opposing completely dentulous, fully or partially restored dentition. Good oral hygiene. The patient should have bone for implants, minimum bone height 10 mm and minimum bone diameter should be 6 mm. Adequate inter arch space for restoration 15mm or more. Adult patients age ≥18 years Exclusion Criteria: any medical disorder that could complicate surgical phase or affect osteointegration. Radiation chemotherapy. smokers more than 10/daily. Uncooperative patients. Patients with Para-functional habits Patients with severe periodontal diseases. Patients with limited mouth opening. Presence of intraoral pathological lesions. Diabetic (HbA1c >7.5%).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: screwmented metal frameworks based on virtual implant position.<br>this group will receive a CAD CAM restoration based on virtually planned implant position. | Procedure: screwmented metal frameworks<br>* Intervention group: in which the edentulous area will be restored with 3-implant, screwmented CAD/CAM frameworks constructed based on planned implant positions<br>|
| Active Comparator: screw-retained metal frameworks based on actual implant position.<br>this group will receive screw retained CAD CAM restoration based on actual implant position using conventional open tray impression. | Procedure: screwmented metal frameworks<br>* Intervention group: in which the edentulous area will be restored with 3-implant, screwmented CAD/CAM frameworks constructed based on planned implant positions<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| marginal bone changes. | Using long cone paralleling technique , RINN XCP and Digora (digital periapical radiographs for standardization. the bone loss is measured in mm | 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Patient satisfaction | Patient satisfaction questionnaire using Visual Analogue Scale (VAS) scale, from 0-100, where 0 is the worst meaning that patient is not satisfied and 100 is the highest satisfaction meaning the patient is totally satisfied | 6 months |