Influence of implant taper on the primary and secondary stability of osseointegrated titanium implants

Clinical Oral Implants Research
Dominic O'SullivanNeil Meredith

Abstract

The study presented was designed to analyse the mechanical performance and the primary and secondary stability characteristics of endosseous titanium implants with 1 degree (EXP1) and 2 degrees (EXP2) of taper when compared with the standard Brånemark design (Nobel Biocare AB, Gothenburg, Sweden). One pair of 10 mm EXP1 and control implants were placed in the femoral condyles of six rabbits. Paired 6 mm EXP1 and control implants and 6 mm EXP2 and control implants were placed in the tibial metaphysis. The control implants used were 4 mm diameter standard Brånemark implants, the same length as the test implants. At placement, insertion torque (IT) and resonance frequency analysis (RFA) measurements were performed. Six weeks postoperatively when the animals were killed, RFA and removal torque (RT) measurements were made. At placement, significantly higher IT was needed to insert the EXP implants compared with the controls. RFA values were significantly higher for EXP1 implants placed in the tibia but not in the femur. In pooling data from the femur and tibia there was a significant difference. The EXP2 implants failed to insert fully and demonstrated a lower RFA value than may have been expected due to the exposed threads, althoug...Continue Reading

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Citations

Apr 3, 2007·Clinical Oral Investigations·Annette RabelAndrea Maria Schmidt-Westhausen
Jun 27, 2012·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Young-Kyun KimPil-Young Yun
May 27, 2011·Implant Dentistry·Christian MakaryNada Naaman
Oct 12, 2011·Implant Dentistry·Charles A Babbush, John Brokloff
Jul 8, 2009·The Journal of Oral Implantology·Linus ChongJohn Gaughan
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