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Int J Oral Maxillofac Implants. 2005 Nov-Dec;20(6):930-7.

Survival estimates and risk factors for failure with 6 x 5.7-mm implants.

Author information

1
Department of Oral and Maxillofacial Surgery, University of North Carolina School of Dentistry, Chapel Hill, North Carolina, USA.

Abstract

PURPOSE:

Short dental implants facilitate prosthetic restoration in the setting of limited alveolar bone height. The study objectives were to (1) estimate the 1-year survival of Bicon 6 x 5.7-mm implants, (2) compare the 1-year survival of 6 x 5.7-mm implants with that of non-6 x 5.7-mm implants, and (3) identify risk factors associated with implant failure.

MATERIALS AND METHODS:

A retrospective cohort study design was used. The sample was composed of patients who had received at least one 6 x 5.7-mm implant. Predictor variables were categorized as demographic, health status, anatomic, implant-specific, prosthetic, perioperative, and reconstructive. The outcome variable was implant failure, defined as explantation. Appropriate descriptive, bivariate, and multivariate survival statistics were computed.

RESULTS:

The sample was composed of 35 patients in whom 172 implants had been placed (45 of which were 6 x 5.7-mm). The 1-year survival rates for 6 x 5.7-mm and non-6 x 5.7-mm implants were 92.2% and 95.2%, respectively (P = .76). After adjusting for covariates in a multivariate model, implant size was not associated with failure (P = .95).

DISCUSSION:

The comparable survival estimates for 6 x 5.7-mm implants and non-6 x 5.7-mm implants in this study suggested that 6 x 5.7-mm implants can become osseointegrated and bear a functional load after placement.

CONCLUSIONS:

The survival of 6 x 5.7-mm implants was comparable to that of non-6 x 5.7-mm implants.

PMID:
16392351
[Indexed for MEDLINE]

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