Autori: Corina Marilena Cristache, Camelia Ionescu, Mihai Burlibasa, Gheorghe Cristache, Alexandru Andrei Iliescu, Horia Dimitriu
Editorial: Editura Stiintifica F.M.R, METALURGIA INTERNATIONAL ISSN 1582-2214, Spec. Issue 16, p.59-64, 2009.
The intense and continuous cooperation between metallurgists and biologists opened new ways for the oral rehabilitation especially for fully edentulous patients.
The aim of our prospective randomised clinical study was to compare two stress-breaking retention systems for implant supported mandibular overdenture with the use of Straumann dental implant system.
Material and methods: 46 fully mandibular edentulous patients aged between 42 and 84 years were enrolled in the study.
Two screw-type Straumann SLA implants were inserted in the canine region and after 6 weeks healing period the patients were randomly assign to one of the following groups B – received retentive anchors and M received magnets as retention for the mandibular overdenture.
Data collection performed at baseline (1 week after insertion of the implant overdenture) (T0) at 6-month (T) and annually (T1-T5) and the following parameters were assessed: gingiva-scor, plaque-score, calculus, bleeding-score, probing pocket depth, mechanical complications of the attachment components. Implant stability was measured at the time of surgery (Ts), at abutment insertion (T0) at 6 month (T) and annually (T1-T5) using Osstell Mentor.
Results and Conclusions: 4 implants failed before loading (95,6% success rate).
Mean scores on gingiva, plaque, calculus, bleeding and pocket depth indices were low at all evaluation period. No loss of implants stability.
Although the retention force of the magnet attachment is smaller, the M group showed less plaque and calculus index and less prosthetic complications.
The implant-retained overdenture is a reliable treatment modality, tends to become the first choice standard of care for edentulous patients but demands continuous aftercare especially when ball attachment and golden matrix (group B.1) are used.
Cuvinte cheie: cercetare si dezvoltare // material science research and development