Maxillary sinus augmentation as a risk factor for implant failure.

Purpose: The investigators sought to determine whether maxillary sinus augmentation (MSA) was an independent risk factor for implant failure.

Materials And Methods: Using a retrospective cohort study design, the investigators enrolled a sample composed of subjects having 1 or more implants placed in the posterior maxilla. The primary predictor variable was MSA status at the time of implant placement (MSA present or absent).

Dentoalveolar reconstructive procedures as a risk factor for implant failure.

Purpose: Dentoalveolar reconstructive procedures (DRPs) are commonly used to enhance deficient implant recipient sites. It is unclear, however, if these procedures are independent risk factors for implant failure. The specific aim of this study was to assess the use of DRPs as a risk factor for implant failure.

Complications of dental implants: identification, frequency, and associated risk factors.

Purpose: This study sought to identify the types, frequencies, and risk factors associated with complications following placement of dental implants. It was hypothesized that one or more factors could be identified that are associated with an increased risk for complications and may be modified by the clinician to enhance outcome.

Materials And Methods: A retrospective cohort study design was used that included patients who received Bicon implants (Bicon, Boston, MA) between 1992 and 2000.