Two-Implant Supported Molar

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

Thomas J. Balshi, DDS, PhD, FACP*
Glenn J. Wolfinger, DMD, FACP**

Int J Periodont Rest Dent 1997; 17:427-435.

Posterior single-tooth implant restorations 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. (Int J Periodont Rest Dent 1997; 17:427-435.)

* Diplomate, American Board of Prosthodontics; and Private Practice, Fort Washington, Pennsylvania.

** Staff Prosthodontist, Veteran’s Administration Medical Center, Philadelphia, Pennsylvania; and Private Practice, Fort Washington, Pennsylvania.


Pi Dental Center, Fort Washington, PA