Download or read book A 5-year Retrospective, Human Study on Cemented Implant Abutment Connections of Single Crown Implant Rehabilitations written by Gianmaria D'Addazio and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dental implants represent an efficient option for the replacement of missing teeth. A large number of studies, stated a high implant success rate of more than 10 years. However, failures and complications have been described. Marginal Bone Loss (MBL) occur in the peri-implant area and it is considered an important factor for implant survival. The latter is influenced by several factors such as micro-movement, bacterial infiltration, bone type, macro-geometry and implant abutment connection. Although, different types of implant abutment connections has been developed, there is still lack of knowledge concerning cemented retained fixture-abutment connection. therefore, the aim of this retrospective study was to evaluate at 5 year of follow-up the survival rate and MBL on cemented retained abutments of single crown implant rehabilitations. A total of 52 single implant supported rehabilitation, performed on patients aged between 31 and 78 years were analysed on this human study. Patients were rehabilitated with single crown with cemented retained abutments. This type of abutment connection provides a collar positioned inside the fixture with a press-to-fit system. A titanium full milled abutment was cemented on the collar and then a single prosthetic crowns were cemented on the correspondent implant abutments. After 5 year of follow-up, survival rate and MBL (performed by periapical radiographs with individualized bite block) were analysed. Data are presented as means and standard deviations (SD) and used for the statistical analysis. A Tukey Test was used for the multiple comparisons.The data analysis showed a rate of 100% of implant survival rate after the 5 year follow up period. The marginal bone loss radiographic measurements were described in table. MBL showed a mean reduction of 0,62mm u00b1 0,12 after 5 year of function compared to the insertion time point. Regarding mechanical aspect of connection no complications occurred.No crown or abutment loosening were registered. Correlations of MBL with age and sex were performed and no difference was shown comparing MBL and Sex. On the other hand, a statistically significant difference was found relating age and MBL (P