Comparison of 6-mm and 11-mm dental implants in the posterior region supporting fixed dental prostheses: 5-year results of an open multicenter randomized controlled trial

Felix L Guljé; Henny J A Meijer; Ingemar Abrahamsson; Christopher A Barwacz; Stephen Chen; Paul J Palmer; Homayoun Zadeh; Clark M Stanford

doi:10.1111/clr.13674

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Comparison of 6-mm and 11-mm dental implants in the posterior region supporting fixed dental prostheses: 5-year results of an open multicenter randomized controlled trial

Journal article

Open access

Peer reviewed

Comparison of 6-mm and 11-mm dental implants in the posterior region supporting fixed dental prostheses: 5-year results of an open multicenter randomized controlled trial

Felix L Guljé, Henny J A Meijer, Ingemar Abrahamsson, Christopher A Barwacz, Stephen Chen, Paul J Palmer, Homayoun Zadeh and Clark M Stanford

Clinical oral implants research, Vol.32(1), pp.15-22

01/2021

DOI: 10.1111/clr.13674

PMCID: PMC7821315

PMID: 33025645

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Abstract

The aim of this multicenter, randomized controlled trial was to compare the clinical and radiographic outcomes of 6-mm or 11-mm implants, placed in the posterior maxilla and mandible, during a 5-year follow-up period. Ninety-five patients with adequate bone height for 11-mm implants, were randomly allocated to a 6-mm group (test group with short implants) or an 11-mm group (control group with standard-length implants). Two or three implants of the same length were placed in each patient and after 6 weeks loaded with a splinted provisional restoration. This was followed by definitive splinted restoration 6 months after implant placement. Clinical and radiographic parameters, including the occurrence of complications were recorded. A total of 49 patients were enrolled to receive 6-mm implants (n = 108) and 46 patients to receive 11-mm implants (n = 101). Three implants (two of 6 mm and one of 11 mm in length) were lost before loading and one 6-mm implant after 15 months of function, and one 11-mm implant was lost during the first year of function. The 5-year survival rates were 96.0% and 98.9% in the 6-mm and 11-mm group, respectively. The mean marginal bone level changes 5 years post-loading were 0.01 ± 0.45 mm (bone gain) in the 6-mm group and -0.12 ± 0.93 mm (bone loss) in the 11-mm group (p = .7670). Clinical parameters, including plaque, bleeding on probing and pocket probing depth were not significantly different between the groups, and also technical complications were low. The clinical and radiographic outcomes of 6-mm short and 11-mm standard-length implants were not different during a 5-year evaluation period.

Alveolar Bone Loss - diagnostic imaging

Alveolar Bone Loss - etiology

Dental Implantation, Endosseous

Dental Implants

Dental Prosthesis Design

Dental Prosthesis, Implant-Supported

Dental Restoration Failure

Follow-Up Studies

Humans

Immediate Dental Implant Loading

Treatment Outcome

Details

Title: Subtitle: Comparison of 6-mm and 11-mm dental implants in the posterior region supporting fixed dental prostheses: 5-year results of an open multicenter randomized controlled trial
Creators: Felix L Guljé - University Medical Center Groningen
Henny J A Meijer - University Medical Center Groningen
Ingemar Abrahamsson - University of Gothenburg
Christopher A Barwacz - University of Iowa
Stephen Chen - The University of Melbourne
Paul J Palmer - King's College London
Homayoun Zadeh - VISTA Institute for Therapeutic Innovations Woodland Hills CA USA
Clark M Stanford - University of Illinois Chicago
Resource Type: Journal article
Publication Details: Clinical oral implants research, Vol.32(1), pp.15-22
DOI: 10.1111/clr.13674
PMID: 33025645
PMCID: PMC7821315
NLM abbreviation: Clin Oral Implants Res
ISSN: 0905-7161
eISSN: 1600-0501
Grant note: DENTSPLY Implants
Language: English
Date published: 01/2021
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Dentistry Administration; Prosthodontics; Orthopedics and Rehabilitation; Craniofacial Anomalies Research Center; Family Dentistry
Record Identifier: 9984367620802771

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