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Open AccessArticle

Effectiveness of Ball Attachment Systems in Implant Retained- and Supported-Overdentures: A Three- to Five-Year Retrospective Examination

Private Practice, 40123 Bologna, Italy
Private Practice, 45014 Porto Viro, Italy
Private Practice, 20831 Seregno MB, Italy
Department of Dentistry, Fra G.B. Orsenigo-Ospedale San Pietro F.B.F., 00100 Rome, Italy
Department of Clinical Science and Translational Medicine, University of Rome, Tor Vergata, 00100 Rome, Italy
Department of Implantology and Prosthetic Aspects, Aldent University, 1001 Tirana, Albania
Private Practice, 1001 Tirana, Albania
Private Practice, 00151 Rome, Italy
Author to whom correspondence should be addressed.
Dent. J. 2019, 7(3), 84;
Received: 19 June 2019 / Revised: 31 July 2019 / Accepted: 14 August 2019 / Published: 1 September 2019
Purpose: To evaluate implant and prosthetic survival rates, complications, patient satisfaction, and biological outcomes of patients rehabilitated with a ball attachment system for implant retained- and supported-overdentures (IOV), which was in function for 3 to 5 years. Methods: This retrospective study evaluated data collected from patients treated between April 2001 and May 2018 with IOV on splinted and non-splinted implants and a ball attachment system. Patients were followed for 36 to 206 months (mean follow-up was 128.1 ± 51.9 months). Data were collected at the 3- and 5-year follow-up examination. Outcome measures were implant and prosthetic survival rates, technical complications, marginal bone loss (MBL), oral health impact profile (OHIP), and periodontal parameters (bleeding on probing and plaque index). Results: A total of 46 patients (16 males and 30 females) with 124 implants were included in this study. Twenty-five implant-retained overdentures were delivered on 53 unsplinted implants, while the other 21 patients received an implant-supported overdentures and the implants were splinted. At the five-year follow-up examination, one implant and one prosthesis failed in the unsplinted group, resulting in a cumulative survival rate of 97.8% at the patient level. Two minor technical complications were experienced. Conclusions: Implant overdenture retained or supported by ball attachment systems showed high implant and prosthetic survival and success rates. A low number of complications, high patient satisfaction, and successful biological parameters were experienced in the mid-term follow-up. Data need to be confirmed by further randomized trials. View Full-Text
Keywords: implant overdenture; metal bar; ball attachments; dental implants implant overdenture; metal bar; ball attachments; dental implants
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Ortensi, L.; Martinolli, M.; Borromeo, C.; Ceruso, F.M.; Gargari, M.; Xhanari, E.; Tallarico, M. Effectiveness of Ball Attachment Systems in Implant Retained- and Supported-Overdentures: A Three- to Five-Year Retrospective Examination. Dent. J. 2019, 7, 84.

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