Management of Severely Atrophied Maxillary Ridge Using Quad Zygomatic Implants

Study Overview
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Brief Summary
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This clinical study will aim to compare and evaluate zygomatic implant stability, occlusal contact, and bone level changes around dental implants

Detailed Description
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The aim of this study will be to compare and evaluate zygomatic implant stability, occlusal contact, and bone level changes around dental implants and that of the atrophied maxilla rehabilitated with immediate loaded hyprid prosthesis supported by 4 zygomatic implants.

Official Title
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Management of Severely Atrophied Maxillary Ridge Using Quad Zygomatic Implants to Support Immediately Loaded Hybrid Prosthesis.One Year Evaluation of Occlusal Contact and Ridge Resorption

Conditions
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Prosthesis Durability

Intervention / Treatment
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* Device: Implant supported hybrid maxillary prosthesis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients will have healthy healed residual alveolar ridges, Angle's class I maxillomandibular relations, available maxillary restorative space. This will be verified by tentative jaw relation records. Exclusion Criteria: All detrimental bad habits like smoking, TMJ clicking or TMJ dysfunction will be excluded.

Ages Eligible for Study
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Minimum Age: 45 Years
Maximum Age: 70 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
Intervention Model: Single Group Assignment
Interventional Model Description: All patients will receive conventional maxillary and mandibular complete dentures The implant size will be selected for each area according to the available bone length and width as measured by CBCT radiograph. All implants will be surgically installed guided by steriolethognathic stents - Multi-unit abutments will be connected to implants and will be immedietly loaded by fixed full arch screw retained provisional acrylic restoration. Final prosthesis will be delivered 6-8 months later
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: quad zygomatic hybrid maxillary prosthesis<br>All patients will be rehabilitated with immediate loaded hybrid prosthesis supported by 4 zygomatic implants. | Device: Implant supported hybrid maxillary prosthesis<br>* All patients will receive immediately loaded hybrid prosthesis supported by 4 zygomatic implants.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| patient satisfaction | The patient satisfaction will be evaluated using the visual analog scale (VAS) questionnaire at base line, 6, and 12 months later | one year | 
| marginal implant bone loss | The implant marginal bone height changes will be measured radiographically at base line, 6, and 12 months later | one year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| posterior area index | the area index of the anterior and posterior maxillary ridge will be measured radiographically at base line, 6, and 12 months later | one year |