الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Objective : This clinical study was conducted to evaluate peri-implant soft tissue health of two implants retained complete mandibular overdenture with Zirconia-PEEK telescopic attachment. Material and methods : Six completely edentulous patients of both sexes and average age of 60 years old were selected for this study. Each patient received two implants in the mandibular canine regions. Maxillary conventional complete dentures were constructed against mandibular implant retained overdentures for all patients. Zirconia-PEEK telescopic attachments were fabricated to retain the overdentures where primary crowns were made of zirconia and secondary ones were made of PEEK. Peri-implant soft tissue health was evaluated at the time of overdenture insertion (T0), three months (T3) and six months later (T6). Results :this study revealed that, after 6 months of overdenture use, no statistically significant difference was found in all measured peri-implant soft tissue health parameters. Conclusion : Within limitations of this study, it could beconcluded that: Zirconia-PEEK telescopic attachmentmay be considered as a biologicallypromising attachment system regarding preservation of peri-implant soft tissue health of implant retained overdentures.