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Volume 17 , Issue 5
September/October 1997
Pages 427-435

Two-Implant-Supported Single Molar Replacement: Interdental Space Requirements and Comparison to Alternative Options

Balshi/Wolfinger

PMID: 9497731
DOI: 10.11607/prd.00.0229

Posterior single-tooth implant resotrations are subjected to an increased risk of bending overload. A high incidence of implant fracture has been reported when using a single standard 3.75-mm-diameter implant to support a molar restoration. The purpose of this article is to demonstrate the clinical feasibility of placing two implants to support a molar restoration and to compare this treatment option to the use of a single standard implant or a wide-diameter implant. Two osseointegrated dental implants used to support a molar restoration in interdental spaces as small as 10 mm is shown to be effective and predictable in 60 restorations over the past 7 years. The use of two implants provides more surface area for osseointegration and spreads the occlusal loading forces out over a wider area, reducing the potential bending forces that would otherwise exist in a single-implant molar restoration.

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