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Volume 14 , Issue 1
January/February 1999

Pages 101–107

Five-mm-Diameter Implants without a Smooth Surface Collar: Report on 98 Consecutive Placements

Franck Renouard, DDS, Jean-Pierre Arnoux, DDS, David P. Sarment, DDS

PMID: 10074759

In recent years, indications for endosseous dental implants have been extended to include partially edentulous jaws with areas of limited bone density and bone volume. Wide-diameter implants are particularly well suited for these situations. The purpose of this paper was to report on 98 consecutively placed 5-mm-diameter implants without smooth surface collars. Eight implants failed—6 at second-stage surgery, and 2 after 1 year of loading (91.8% survival rate). Sixty percent of the remaining implants had no thread above the bone level after 1 year of loading. The authors discuss the possible causes for failure and suggest guidelines to avoid failure. (Int J Oral Maxillofac Implants 1999;14:101–107) Key words: bone loss, dental implant, wide diameter

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