Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-64940
Jung, Ronald E; Fenner, Nadine; Hämmerle, Christoph H F; Zitzmann, Nicola U (2012). Long-term outcome of implants placed with guided bone regeneration (GBR) using resorbable and non-resorbable membranes after 12-14 years. Clinical Oral Implants Research:Epub ahead of print.
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AIM: The aim of the present prospective study was to evaluate the long-term outcome of implants placed simultaneously with guided bone regeneration (GBR) using resorbable and non-resorbable membranes. MATERIALS AND METHODS: The original study population consisted of 72 patients receiving a total of 265 implants. In all GBR-treated sites, demineralized bovine bone mineral (DBBM) was used in combination either with a collagen (CM) or an Expanded polytetrafluoroethylene (e-PTFE) membrane. A total of 112 implants was treated with CM, 41 implants were treated with e-PTFE membranes, and 112 served as a control group because implants were entirely surrounded by bone and did not need any GBR procedures. Clinical and radiographic analyses were performed after a period of 12-14 years. RESULTS: The median follow-up time was 12.5 years (range 12-14 years). A total of 58 patients participated in the present investigation, corresponding to 80.5% of the original study population. The cumulative implant survival rate at the follow-up examination was 93.2%. For the control group the cumulative survival rate was 94.6%, for the CM 91.9%, and for the e-PTFE 92.6%. Differences among the groups were not statistically significant. The radiographically determined marginal bone level (MBL) amounted to: CM 2.36 mm (SD), e-PTFE 2.4 mm (SD), control 2.53 mm (SD). There is no evidence (P < 0.2) that the slope of bone level over time is different for the three treatment groups. CONCLUSION: It is concluded that implants placed simultaneously with GBR procedures using resorbable or non-resorbable membranes reveal a high survival rate ranging from 91.9% to 92.6%, therefore it is considered to be a safe and predictable therapy.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Center for Dental Medicine > Clinic for Fixed and Removable Prosthodontics|
|DDC:||610 Medicine & health|
|Date:||15 June 2012|
|Deposited On:||02 Oct 2012 17:35|
|Last Modified:||21 May 2013 07:09|
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