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Volume 11 , Issue 3
May/June 1996
Pages 340-350

Eight-Year Clinical Retrospective Study of Titanium Plasma-Sprayed and Hydroxyapatite-Coated Cylinder Implants

Stephen L. Wheeler, DDS

PMID: 8752555

A total of 1,202 press-fit cylinder implants were placed in 479 patients from March 1986 to March 1994. The patients’ ages ranged from 14 to 88 years. The implants included 889 titanium plasma-sprayed implants and 313 hydroxyapatite-coated implants. There were no statistically significant differences in the distribution of hydroxy apatite-coated and titanium plasma-sprayed implants based on implant location, type of restoration, age, and sex. Although differences in long-term success rates based on simple percentages were also not statistically significant, cumulative survival rates based on life table analysis up to 96 months were 92.7% for titanium plasma-sprayed systems and 77.8% for hydroxyapatite-coated systems. Graphical interpretations of these data revealed interesting contrasts, including the timing and results of implant failure, which are discussed in detail. (INT J ORAL MAXILLOFAC IMPLANTS 1996;11:340-350)

Key words: hydroxyapatite coating, life table analysis, press-fit cylinder implants, spreadsheet analysis, titanium plasma-spray coating

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