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Volume 15 , Issue 6
November/December 2000
Pages 801-810

The Use of Angulated Abutments in Implant Dentistry: Five-Year Clinical Results of an Ongoing Prospective Study

Ashok Sethi, BDS, DGDP, MGDSRCS, DUI, Thomas Kaus, Dr Med Dent, DDS, Peter Sochor, ZTM.

PMID: 11151578

A total of 2,261 2-stage implants was placed in 467 patients in combination with angled abutments ranging from 0 to 45 degrees. These were observed over a period of up to 96 months, with a mean observation time of 28.8 months. Single and multiple teeth were replaced and restored using angled abutments. For patients who contributed multiple survival data, the data were considered dependent. Therefore, a mean survival estimation was performed. With a certainty of 95%, an estimated mean survival rate better than 98.6% after a 5-year observation period was calculated. The statistical comparison of 2 independent, randomized implant groups (with abutments angled between 0 and 15 degrees and between 20 and 45 degrees) by means of a log-rank test showed a probability of 0.84 (P value) that the survival functions are the same for both groups. Good esthetic and functional outcomes were observed. (INT J ORAL MAXILLOFAC IMPLANTS 2000;15:801-810) Key words: dental abutments, osseointegrated dental implants, survival analysis

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