All on Four Versus All on Three Implant Treatment Concepts

Study Overview
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Brief Summary
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the evaluation of patient satisfaction of All on-4 versus All on-3 implant treatment concepts rehabilitation of atrophied mandibular ridge.

Detailed Description
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Patients will be classified into 2 groups according to the implant treatment concept they received: Group 1 (control group); included patients who received All on 4 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 2 vertical implants in the lateral incisor/canine areas. Group 2 (test group); included patients who received All on 3 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 1 vertical implant in the midline of the mandible.

Official Title
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All On-4 Versus All o-3 Implant Treatment Concepts for Rehabilitation of Atrophied Mandibular Ridge. A Study of Patient Satisfaction

Conditions
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Prosthesis Durability

Intervention / Treatment
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* Device: implant supported fixed full arch prosthesis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. All patients already have implants inserted in their mandibular ridges According to the All on 4 or All on 3 concepts. 2. They were healthy, free from any systemic diseases relating to bone resorption such as uncontrolled diabetes or osteoporosis. This was achieved through medical history and clinical examination by the physician. 3. All patients have sufficient inter-arch space. 4. All patients are of angle class I maxillo-mandibular relationships. 5. All patients had maxillary conventional complete dentures. Exclusion Criteria: 1. Any neuromuscular disorders 2. Uncooperative patients -

Ages Eligible for Study
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Minimum Age: 45 Years
Maximum Age: 65 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
Interventional Model Description: Patients will be classified into 2 groups according to the implant treatment concept they received: Group 1 (control group); included 3 patients who received All on 4 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 2 vertical implants in the lateral incisor/canine areas. Group 2 (test group); included 3 patients who received All on 3 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 1 vertical implant in the midline of the mandible.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: • Group 1 (control group)<br>patients who received All on 4 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 2 vertical implants in the lateral incisor/canine areas. | Device: implant supported fixed full arch prosthesis<br>* the patients will receive screw-retained cast metal-ceramic fixed prostheses that replace lost gingival tissues with pink porcelain.<br>|
| Active Comparator: • Group 2 (test group);<br>patients who received All on 3 implant-supported fixed restoration. The patients received 2 inclined implants anterior to the mental foramina and 1 vertical implant in the midline of the mandible. | Device: implant supported fixed full arch prosthesis<br>* the patients will receive screw-retained cast metal-ceramic fixed prostheses that replace lost gingival tissues with pink porcelain.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| patient satisfaction | Patient satisfaction was evaluated using a questionnaire based on visual analog scale (VAS) | one year | 
| crestal bone loss | bone loss was measured around the implants in mm | Two year |