Postendodontische Restaurationen mit glasfaserverstärkten Aufbaustiften - eine prospektive klinische Beobachtungsstudie
Glass-fiber reinforced endodontic posts (GFRP) combined with composite resin core materials are commonly used to build up damaged endodontically treated teeth. Only short- to medium-term data of clinical studies have been published. The aim of this investigation was to evaluate long-term survival of postendodontic restorations with three different glass-fiber reinforced composite resin post systems (GFRP) and to analyze the impact of relevant clinical factors. One-hundred forty-nine adhesively luted GFRP in 119 patients were followed up to 120 months. A chemically curing composite resin was used to build up the core. The final restorations were placed according to the specific prosthetic treatment plan. Results: Fifty-five failures were observed during 10 years (mean annual failure rate: 4.6 %). Most frequent types of failure were post fracture and loss of post retention (both n = 17) followed by endodontic complications (n = 7). Ten catastrophic failures resulted in extraction of the respective teeth. Sixty teeth were followed up to 120 months, while 34 teeth were judged as lost-to-follow-up. The mean survival time (SD) was 74 (43) months. In crude analyses tooth type and number of remaining cavity walls were significantly associated with failure rate. Cox regression analysis revealed for tooth type a significant HR of 2.0 (95 % CI: 1.1 - 3.5; p = 0.021) in favour for posterior teeth. Conclusion: Tooth type and dimension of coronal destruction are both key factors in postendodontic restorations with glass-fiber reinforced endodontic posts.
Subject HeadingsKontrollierte klinische Studie [GND]
Dental materials [MeSH]
Dental restoration, permanent; Methods [MeSH]