Prosthetic Complications of Screw Retained Restoration

Study Overview
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Brief Summary
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On of the main fixed prosthetic options of completely edentulous patients is the screw-retained implant supported prosthesis which was constructed on transmucosal abutments with its encountered problems such as: hardness to make it passively seated with multiple screw fracture and loosening problems and multiple encountered veneer material fracture and so there effect on patient satisfaction with multiple maintenance recalls.so, the investigators want to try a new technique of fabrication which was proposed for reducing the problems of lack of passivity which is the intraoral luting cement technique on titanium bases with reduced screw number but, with luting cement problems as de-cementation and cement biological effects on soft tissues and bone and there effect on number of patient recall visits and maintenance and so there effect on patient satisfaction

Official Title
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Prosthetic Complications of Screw Retained Restoration Using Multi-unit Abutments Versus Intra-oral Luting on Titanium Base in Implant Supported Complete Overdentures Randomized Clinical Trial

Conditions
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Edentulous Jaw, Edentulous Alveolar Ridge, Edentulous Mouth

Intervention / Treatment
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* Procedure: titanium bases using intra oral luting cement technique
* Procedure: transmucosal abutment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - Completely edentulous patients Patients with completely edentulous ridges have an opposing natural dentition or implant supported overdenture Completely edentulous patients (with the above mentioned criteria) who have proper amount of attached gingiva (≥2 mm) or to be created Completely edentulous patients (with the above mentioned criteria) who have no history of bruxism Completely edentulous patients (with the above mentioned criteria) who were free or controlled diabetic assessed by measuring glycosylated haemoglobin (HbA1c). (lesser than or equal to 6.4 percent ) Exclusion Criteria: - Patients having a medical condition that absolutely contraindicates implant placement. Patients with uncontrolled diabetes, assessed by measuring glycosylated haemoglobin (HbA1c). (greater than to 6.4 percent ) Potentially uncooperative patients who are not willing to go through the proposed interventions. - Moderate-to-heavy daily smokers* (who report consuming at least 11 cigarettes/day). Patients who are having complete lower denture Patients who have history of bruxism
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: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: titanium bases group<br>full-arch screw-retained implant prosthesis on titanium bases using intra oral luting cement technique | Procedure: titanium bases using intra oral luting cement technique<br>* a full-arch screw-retained implant prosthesis on titanium bases using intra oral luting cement technique<br>|
| Experimental: transmucosal abutment group<br>a full-arch screw-retained implant prosthesis with transmucosal abutment | Procedure: transmucosal abutment<br>* a full-arch screw-retained implant prosthesis with transmucosal abutment<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Abutment screw loosening | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prosthetic screw loosening | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 
| Prosthetic screw fracture | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 
| Abutment screw fracture | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 
| Veneer fracture | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 
| Framework fracture | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months | 
| Ti-bases de-cementation | Measuring device :Clinical visual inspection / Measuring unit:Binary | 12 months |