Vertical Versus Inclined Implant to Retain Locator Maxillary Overdenture

Study Overview
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Brief Summary
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Objectives: evaluate the success rate, prosthetic maintenance , clinical and radiologic results of vertical implants with straight abutments versus inclined implants with angled abutments to retain locator maxillary overdentures. There were two groups : 1) The control group 2) The study group

Detailed Description
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the aim of the present investigation was to evaluate the success rate, prosthetic maintenance , clinical and radiologic results of vertical implants with straight abutments versus inclined implants with angled abutments to retain locator maxillary overdentures. Materials and Methods conducted on 12 patients (6 males and 6 females) aged 58 to 68 years with completely edentulous maxillary ridges opposing implant-retained mandibular overdentures. Patients admit to the prosthodontic department, Faculty of Dentistry, Mansoura University for oral rehabilitation by implant-supported maxillary prostheses. Patients were allocated into one of two treatment groups: 1) The control group ; included 6 patients (3 males and 3 females) who will receive 4 vertical implants with straight trans mucosal abutments retaining locator maxillary overdenture 2) The study group; include 6 patients (3 males and 3 females) who will receive 4 inclined implants with angled trans mucosal abutments for retaining locator maxillary overdenture. Randomization and allocation of patients into treatment groups was made by dental personnel who is blind to treatment groups.

Official Title
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Vertical Implant Versus Inclined Implant to Retain Locator Maxillary Overdenture : One Year Randomized Controlled Clinical Trial

Conditions
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Implant Complication, Bone Loss

Intervention / Treatment
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* Procedure: implants


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Unable to wear the upper denture Radiographic diagnosis of bone loss Exclusion Criteria: Neuromuscular diseases Insulin dependent diabetes

Ages Eligible for Study
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Minimum Age: 58 Years
Maximum Age: 68 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: Randomized controlled clinical trial study conducted on 12 participants with completely edentulous maxillary ridges. Patients were allocated into one of two treatment groups: 1) The control group ; included 6 patients (3 males and 3 females) who will receive 4 vertical implants with straight trans mucosal abutments retaining locator maxillary overdenture 2) The study group; include 6 participants (3 males and 3 females) who will receive 4 inclined implants with angled trans mucosal abutments for retaining locator maxillary overdenture. A new maxillary conventional dentures will be constructed with a bilateral balanced occlusal concept for all patients. Maxillary dentures were duplicated into heat cure acrylic resin dentures to be used as a radiographic template. Four implants were inserted in the maxilla . For both groups, locator abutments were screwed to the abutments .Clinical and radiographic evaluations were done.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: posterior vertical implants<br>the anterior implants were inserted in the canine/lateral incisor area bilaterally to each other's following the contour of the alveolar bone of the premaxilla. The posterior implants were inserted vertically just anterior to the maxillary sinus (in the area of second premolars) . | Procedure: implants<br>* Four implants in the maxilla with locator attachments<br>|
| Active Comparator: posterior inclined implants<br>The anterior implants were inserted in the canine/lateral incisor area bilaterally to each other's and will be inclined 15o labially following the contour of the alveolar bone of the premaxilla. The posterior implants were inserted just anterior to the maxillary sinus (in the area of second premolars) and inclined 15o distally . | Procedure: implants<br>* Four implants in the maxilla with locator attachments<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| plaque index | measure plaque around each implant using Mombelli indices | 12 months | 
| pocket depth | dental probe used to measure the depth of formed pocket around each implant | 12 months | 
| implant stability | stability of each implant measured using Osstell® device | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Radiographic outcome | measuring bone resorption using the long-cone standardized periapical radiography | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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maxillary overdentures, angled abutment, locator