Five‐year results from a randomized, controlled trial on early and delayed loading of implants supporting full‐arch prosthesis in the edentulous maxilla
- 26 March 2008
- journal article
- research article
- Published by Wiley in Clinical Oral Implants Research
- Vol. 19 (5), 433-441
- https://doi.org/10.1111/j.1600-0501.2007.01510.x
Abstract
The overall aim was to compare the clinical outcomes of early and delayed implant loading in the totally edentulous maxilla during 5 years of function. Twenty-four patients with edentulous maxillae were randomized in two groups and subjected to early (test, n=16) or delayed (control, n=8) loading. A total of 142 implants were placed and 139 implants (Straumann AG) were loaded with full-arch bridges and followed for 5 years. All patients received and maintained a fixed bridge throughout the study period. Five (5.3%) test implants in three patients and two (4.3%) control implants in two patients were lost during the 5 years (NS). There were no differences in implant stability as measured with resonance frequency analysis at 5 years. More bone loss occurred at test than at control implants, -0.8 mm (SD 1.2) vs. -0.3 mm (SD 1.1), respectively. However, test implants showed a more coronal marginal bone level than control implants after 5 years, 2.9 mm (SD 1.1) vs. 3.7 mm (SD 1.2) from the implant shoulder, respectively. No control implants and four (4.4%) test implants in three (18.8%) patients showed >3 mm bone loss after 5 years. Two of the latter implants in one patient also showed increased probing depths, bleeding at probing and plaque accumulation. Tooth fracture was the most common prosthetic complication. The use of lingual gold onlay effectively reduced the number of resin-related complications as opposed to a resilient mouth guard. The present randomized controlled trial showed no important differences between early and delayed loading of implants in the edentulous maxilla after 5 years of function. A favourable long-term marginal bone response to the sandblasted large-grit acid-etched (SLA) surface was observed. Technical complications were mainly resin-related which could be avoided by the use of a lingual gold onlay. It is concluded that early loading of SLA-surface implants for support of full-arch bridges represents a viable therapy for the totally edentulous maxilla.Keywords
This publication has 26 references indexed in Scilit:
- Influence of Transducer Orientation on OsstellTM Stability Measurements of Osseointegrated ImplantsClinical Implant Dentistry and Related Research, 2007
- Implant Treatment in the Edentulous Maxillae: A 15‐Year Follow‐Up Study on 76 Consecutive Patients Provided with Fixed ProsthesesClinical Implant Dentistry and Related Research, 2006
- Early Complete Failures of Fixed Implant‐Supported Prostheses in the Edentulous Maxilla: A 3‐Year Analysis of 17 Consecutive Cluster Failure PatientsClinical Implant Dentistry and Related Research, 2006
- Evaluation of Long‐Term Implant SuccessThe Journal of Periodontology, 2005
- Crestal Bone Changes Around Titanium Implants. Part I: A Retrospective Radiographic Evaluation in Humans Comparing Two Non‐Submerged Implant Designs With Different Machined Collar LengthsThe Journal of Periodontology, 2005
- Implant‐supported fixed prostheses in the edentulous maxillaClinical Oral Implants Research, 2004
- Resonance frequency measurements of implant stability in viva. A cross‐sectional and longitudinal study of resonance frequency measurements on implants in the edentulous and partially dentate maxilla.Clinical Oral Implants Research, 1997
- Fixed implant‐supported prostheses in the edentulous maxilla. A five‐year follow‐up report.Clinical Oral Implants Research, 1994