Retention of Zirconia-PEEK versus cobalt-chromium-PEEK telescopic attachments for implants retained mandibular overdenture | ||
| Al-Azhar Journal of Dental Science | ||
| Volume 27, Issue 4, October 2024, Pages 479-486 PDF (717.99 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajdsm.2023.236775.1466 | ||
| Authors | ||
| Mohamed Abdelhady Abdelhady* 1; mohamed abdullah quassem2; Wesam Elsayed Badr3 | ||
| 1Removable prosthodontics, Faculty of dental medicine (cairo, boys) Al-Azhar university | ||
| 2faculty of dental medicine at Al-Azhar University Cairo boys | ||
| 3Removable Prosthodontics, Dental medicine, Al-Azhar University, Cairo, Egypt | ||
| Abstract | ||
| Abstract Objective: The study compared the retention of two types of telescopic attachments made of Zirconia-PEEK and cobalt-chromium-PEEK for complete lower dentures retained by implants. Subjects and Methods: Twelve completely edentulous patients were randomly chosen. The patients were allocated into two groups; Group I, received a zirconia primary coping and PEEK as a secondary coping’s telescopic attachment. Group II (The control group) : Patients received a cobalt chromium primary coping and PEEK as a secondary coping’s telescopic attachment. A nexygen universal testing machine measured retention at three month intervals for 12 months in both groups. Results: Zirconia-PEEK double crown has recorded higher retentive value than cobalt-chromium-PEEK double crown at baseline, three months, and six months with difference not considered as statistical significances as P value > 0.05. But at 9 months Cobalt-chromium-PEEK double crown recorded higher retentive value than zirconia-PEEK double crown with differences considered as statistical significanse as P value ≤ 0.05. Conclusion: In spite of the good esthetic and lightweight advantages of zirconia, cobalt-chromium has significantly higher retentive value than zirconia. | ||
| Keywords | ||
| Implant-retained overdenture; retention; telescopic attachment; PEEK; Zirconia | ||
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