Clinical evidence

"Freestanding and multiunit immediate loading of the expandable implant; an up-to-40-month prospective survival study."

Two hundred and eighty-six immediate-load Sargon® implants were placed in 75 patients over a 40-month period. Of the 273 implants that survived, 81 were placed into fresh extraction sockets and immediately loaded, 162 were placed into healed sites and immediately loaded, and 30 were delay loaded.

Young Hwan Jo, DDS, MSD, PhD; Peter K. Hobo, DDS; and Sumiya Hobo, DDS, MSD, PhD — Seoul Dental Institute, Seoul, Korea, and the International Dental Academy, Tokyo, Japan.

"Evaluation of Sargon® Immediate Load Implant (Ultra Tooth)."

An evaluation of the immediate-load implant carried out through the Advanced Periodontics programme at the USC School of Dentistry, examining the clinical and microbiological behaviour of hard- and soft-tissue integrated implants against the prevailing two-stage technique described by Brånemark and the one-stage technique described by Schroeder.

Hessam Nowzari, DDS, PhD — Director, Advanced Periodontics; Diplomate, American Board of Periodontology; Associate Professor of Clinical Dentistry, University of Southern California School of Dentistry. Dated 4 November 1997.

Independent laboratory testing of Ultratooth® implant assemblies was carried out by ARTECH, an engineering test house, under a written test protocol. The static test specified five sets of implant and abutment assemblies, each implant installed in a vertical hole drilled in a test fixture and loaded through a 15° angled abutment.

Tested assemblies were examined under an optical microscope at 30× magnification; no damage to the implants or abutments was observed. The protocol, the results and the separate leak-testing report are all published in full below.

"Immediate-Load Implant Quickens Integration."

Writing in Dentistry Today in April 1992, Dr. Sargon Lazarof set out the case for an implant that integrates and loads immediately, against a standard of care that then required roughly four months for mandibular integration and six for maxillary. The article introduced the precursor design and the argument that would become the expandable implant.

Sargon Lazarof, DDS. Dentistry Today, April 1992.