PMID: 30020799Jul 19, 2018Paper

Implant/Abutment Biomechanics and Material Selection for Predictable Results

Compendium of Continuing Education in Dentistry
S Hurson

Abstract

Change in crestal bone height and volume around endosseous dental implants is a complex issue involving interactions among many variables such as surgical approach, patient health, volume of hard and soft tissues, and implant configuration. Establishing and maintaining a soft-tissue seal around transmucosal abutments on bone-level implants or on the collar of one-stage tissue-level implants is paramount to maintaining crestal bone height, and failing to do so will result in apical migration of the soft tissue onto the implant. Bone-level implants have been constructed with many connection configurations. Locking-taper conical connection implants have proven superior to buttress joint implants at achieving a tight seal and eliminating the microgap at the implant-to-abutment junction and have demonstrated improvements in crestal bone maintenance. Attaining a transmucosal seal on locking-taper conical connection implants is dependent on the use of proven tissue-compatible materials such as titanium and zirconia. Gold and dental porcelain directly to the bone-level implant has been shown to cause tissue recession and bone loss around the implant; use of these materials directly to the implant interface should be confined to one-sta...Continue Reading

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