The effect of silicone housing versus metal housing of ball and socket attachment on the retention of mandibular implant retained overdentures : A randomized clinical trial = تاثير الوصلات الدقيقة كروية الشكل من ماده السيلكون او المعدنية المستخدمة فى الاطقم الكلية الفوقية فى الفك السفلى باستخدام الغرسات المعدنية المثبتة على مدى تماسكهما : تجربة سريرية عشوائية / Ramy Moustafa Moustafa Ali ; Supervised Alaa AboulEla , Mona Ahmed , Mohammed Farouk Abdalla

Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics

Purpose: Of this present study is to compare between metal with nylon cap and silicone housing material of the ball attachment regarding retention and patient satisfaction for two weeks, one month and two months after denture insertion. Materials and methods: Eighteen completely edentulous patients with age ranges from 50 to 60 years were selected from the outpatient clinic of the Prosthodontics Department, Faculty of oral and dental medicine, Cairo university according to certain criteria. For all patients, implant supported over dentures were constructed as usual then divided into two equal groups. First group with ball attached two implants supported over dentures with metal housing, while the second group was patients with ball attached two implants supported over dentures with silicone housing. Patients was recalled after two weeks, one month and two months for measuring the retention with digital forcemeter and patient satisfaction by seven point's visual analogue scale. Results: Statistical analysis of retention and patient satisfaction in a comparison between the two groups together was done. The results obtained from this study revealed that, by comparing the two groups throughout the whole study period, the results of this study demonstrated that the metal housing material with nylon cap is better than silicone housing material of ball attachment regarding retention and patient satisfaction at the all interval follow up periods

Issued also as CD