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The goal of this randomized clinical trial is to compare and assess the prosthetic maintenance of two implant-retained mandibular overdentures reinforced with PEKK and Co-Cr frameworks after twelve months. Twenty-four participants were randomly assigned to two groups: Group I received a mandibular implant-retained overdenture reinforced with a Co-Cr framework, while Group II received a mandibular implant-retained overdenture reinforced with a PEKK framework. Also, both groups were rehabilitated with a maxillary complete removable denture.
Twenty-four participants with edentulous maxillary and mandibular ridges underwent meticulous selection, with two implants placed in the mandibular canine areas through a two-stage surgical technique facilitated by a radiographic and surgical stent. Following this, patients were provided with maxillary and mandibular complete removable dentures relined with soft liners. After the subsequent three-month osseointegration period, ball attachments were introduced. Patients were randomly allocated to two groups based on the type of prosthesis they received. Group I received mandibular implant-retained overdenture reinforced with the Co-Cr framework, while Group II received mandibular implant-retained overdenture reinforced with the PEKK framework, both groups received complete removable dentures for the maxillary arch. The assessment of prosthetic maintenance for mandibular implant-retained overdentures in both groups was conducted twelve months post-denture insertion.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Mandibular implant-retained overdenture reinforced with a Co-Cr framework | Experimental | The patient received a mandibular implant-retained acrylic overdenture reinforced with a Co-Cr framework. The framework is manufactured by milling polymethylmethacrylate (PMMA) and then the PMMA undergo conventional casting to produce cobalt chromium (Co-Cr) framework. The framework included in the overdenture by conventional processing technique. |
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| Mandibular implant-retained overdenture reinforced with a PEKK framework | Active Comparator | The patient received a mandibular implant-retained acrylic overdenture reinforced with a Polyetherketoneketone (PEKK) framework. The framework is manufactured by milling PEKK the framework included in the overdenture by conventional processing technique. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Two implant -retained overdenture reinforced with Co-Cr framework | Device | The intervention is made from polymethylmethacrylate reinforced with cobalt chromium ( Co-Cr) framework. |
| Measure | Description | Time Frame |
|---|---|---|
| Evaluation of Prosthetic Maintenance of both types of implant retained overdentures | Evaluation of prosthetic maintenance for mandibular implant-retained overdentures in both groups was made after twelve months of overdenture insertion. Prosthetic maintenance is a checklist for the following aspects that were inspected regarding screw (screw loosening, screw fracture), attachments (wear, distortion, fracture, replacement), and overdentures (reline, remake, fracture, teeth wear, teeth separation, or fracture).maintenance for complication assed through counting frequency of incidence. The unit of measurement used is percentage. | twelve months after delivery of implant retained overdenture |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Omnia MS Refai, PHD | Faculty of Dentistry ,Ain Shams University | Principal Investigator |
| Heba A Salama, PHD | Faculty of Dentistry , Misr International Univeristy | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of Dentistry, Ain shams University | Cairo | Nasr City | 11566 | Egypt |
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| Two implant -retained overdenture reinforced with PEEK framework | Device | The intervention is made from polymethylmethacrylate reinforced with Polyetherketoneketone ( PEEK) framework. |
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