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To assess the wear of Zirconia-PEEK versus cobalt-chromium-PEEK telescopic attachments for implant retained complete mandibular overdenture. The wear of Zirconia-PEEK telescopic attachments can affect the retention of implant retained complete mandibular overdenture.
Twelve completely edentulous patients were randomly chosen for implant retained telescopic overdentures construction and divided into two groups, where group I was a patient with zirconia copy, and group II was with cobalt chromium CoCr copy. The PEEK was constructed for both groups as a secondary coping telescopic attachment for the denture. The wear measurements of PEEK were performed optically by using a USB digital microscope with a built-in camera connected to a compatible personal computer at different intervals of baseline, 3, 6, and 9 months. The data was statistically analyzed and compared using student t-test, ANOVA, and Post Hoc Test.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| patient with zirconia copy | Experimental | Group I (study group) was the group of patients with zirconia as a primary copings that attach to the abutment and PEEK as a secondary coping telescopic attachment that attaches to the fitting surface of the denture. |
|
| patients with cobalt chromium (CoCr) as primary copings | Experimental | Group II (control group) was the group of patients with cobalt chromium (CoCr) as primary copings attached to the abutment and PEEK as a secondary coping's telescopic attachment attached to the fitting surface of the denture. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| implant overdenture | Procedure | Following the two-stage surgical protocol, two dental implant fixtures with a length of 10 mm and a diameter of 3.7 mm were inserted at the canine area of the mandibular alveolar ridge. |
| Measure | Description | Time Frame |
|---|---|---|
| the mean wear values | measurement of the mean of wear between two test groups | at baseline |
| the mean wear values | measurement of the mean of wear between two test groups | after 3 months interval |
| the mean wear values | measurement of the mean of wear between two test groups | after 6 months interval |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hamada Zaki Mahross | Cairo | 11884 | Egypt |
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| ID | Term |
|---|---|
| D040921 | Stress Disorders, Traumatic |
| ID | Term |
|---|---|
| D000068099 | Trauma and Stressor Related Disorders |
| D001523 | Mental Disorders |
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