Four-Millimeter-Long Posterior-Mandible Implants: 5-Year Outcomes of a Prospective Multicenter Study

Background There is lack of evidence on long‐term success of short dental implants in reduced alveolar bone. Purpose In this prospective 5‐year study, survival and marginal bone loss of 4‐mm implants, which supported fixed dental prostheses (FDPs) in severely resorbed posterior mandibles, were evalu...

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Published in:Clinical implant dentistry and related research 2015-10, Vol.17 (S2), p.e385-e395
Main Authors: Slotte, Christer, Grønningsaeter, Arne, Halmøy, Anne-Marie, Öhrnell, Lars-Olof, Mordenfeld, Arne, Isaksson, Sten, Johansson, Lars-Åke
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Alveolar Bone Loss - epidemiology
Alveolar Bone Loss - etiology
bone atrophy
bone loss
bone resorption
clinical trial
crown-implant ratio
Dental Implantation, Endosseous - adverse effects
Dental Implants
Dental Restoration Failure
Dentistry
Female
Humans
Male
Mandible - surgery
Middle Aged
Odontologi
Prospective Studies
short implants
Treatment Outcome
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Summary:Background There is lack of evidence on long‐term success of short dental implants in reduced alveolar bone. Purpose In this prospective 5‐year study, survival and marginal bone loss of 4‐mm implants, which supported fixed dental prostheses (FDPs) in severely resorbed posterior mandibles, were evaluated. Material and Methods In 28 patients, evaluation of 86 osseointegrated 4‐mm‐long implants, which supported a 3‐ or a 4‐unit FDP by crown splinting without the use of pontics or cantilevers, was performed over a 5‐year period. Results Three subjects dropped out for non‐study reasons: one subject had her three implants removed after 1 year and two subjects died (six implants). Five implants in three subjects were lost between 3 and 5 years. Twenty‐four subjects and 71 implants were active at the 5‐year follow‐up (92.2% survival). After 1 year, significant (p 
ISSN:1523-0899
1708-8208
1708-8208
DOI:10.1111/cid.12252