Analysis Of The Shortcomings Of The BioHorizon® Implants

The definition of a “Unique Selling Proposition” (USP) is a feature of a product that makes it different from other similar products and that can be emphasized in advertisements for the product. It is helpful if the differentiating feature also provides a real benefit. The BioHorizons’ USP implants is their Laser-Lok micro-channels on the neck of their implants and abutments. The claim is that these grooves help to form an epithelium attachment to isolate the endosteal portion of the implant from the oral environment. There are several histological studies showing gingival fibers orientated horizontally between the grooves of the laser lines. It has been proven, dating back to the 1970s that soft tissue adheres to an implant surface absent such micro-channels. There have been no controlled, prospective clinical studies proving any clinical advantage to Laser-Loc attachment vs that demonstrated to the blasted or smooth necks of other titanium implants. Since 2008, the Laser-Loc USP has been the cornerstone of BioHorizon’s marketing. About 20 years ago, BioHorizons acquired a license from Zimmer Dental on the Internal Conical Connection patent that the company had acquired when it bought Core-Vent/Paragon in 2001. In 2013 Henry Schein acquired both the German Camlog and American BioHorizons implant companies and in 2019 these two companies were merged. BioHorizons has introduced a wide selection of implant designs in response to the popularity of various features. The result is no clear statement about what features BioHorizons actually thinks are beneficial. The Camlog implants do not have Laser-lok micro-grooves, yet BioHorizons does not claim these implants are any less successful or have more bone loss.

Camlog and Conelog implants have different internal connections from the standard 45 degree lead-in bevel of the BioHorizon implants and have either a blasted or smooth surface on the neck of the implant. What this should say to dental professionals is that BioHorizons itself does not believe the Laser-Loc is essential for clinical success.

BioHorizons claims that studies show improved clinical results but this has never been proven in any side-by-side controlled clinical studies. The survival rates reported in some case series studies using BioHorizons’ Laser-Loc implants are similar to that reported with implants having micro-threads, blasted and even machined necks as evidenced by the published 10 year survival studies with ZimVie’s Tapered Screw-Vent (Niznick Gen3) and this 5 years study with Implant Direct’s Legacy (Niznick GEN4) implants that demonstrated an average of only 0.6mm of bone loss. Dental professionals placing implants are becoming increasingly concerned about the prevention and treatment of peri-implantitis around osseointegrated implants. The same ability of the Laser-Loc feature to attract soft tissue attachment is a concern with regard to the attachment of a biofilm that can contribute to peri-implantitis. There is a renewed interest in implants with a hybrid surface consisting of a smooth neck and textured body. This was the subject of 2022 articles in the Academy of Osseointegration News by

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