alexa Factors influencing primary dental implant stability remain unclear.



Author(s): Cooper LF

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SUBJECTS: During a 10-year period, 316 patients had 1084 Branemark implants placed at the same clinic. The mean age was 50.70 +/- 12.31 years, with 55% of the study population female and 45% male.

KEY EXPOSURE/STUDY FACTOR: A number of exposure variables were evaluated in multivariate analyses including age, gender, smoking habit, periodontal status, implant dimension(length and diameter), and implant location.

MAIN OUTCOME MEASURE: Implant stability--the ability to withstand loading in axial, lateral, and rotational directions--was determined by using a Periotest device (Medizintechnik Gulden, Modautal, Germany). A Periotest value (PTV) cut-point of -2 was used.

MAIN RESULTS: The site of implant insertion showed the strongest association with failure of primary dental implant stability. Implants in the anterior mandible had a 6.43-fold lower risk of primary implant stability failure versus other sites. The maxilla had a 2.7-fold higher risk of primary stability failure versus the mandible. Females had a 1.54 higher risk of primary implant stability failure versus men, and implants less than 15 mm in length had a 1.49-fold higher risk of primary implant stability failure versus longer implants.

CONCLUSIONS: According to this study, failure to achieve primary stability as quantified using the Periotest value (PTV) is more likely in females, at sites other than the anterior mandible, and with implants less than 15 mm in length when using machined surface implants.

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This article was published in J Evid Based Dent Pract. and referenced in Dentistry

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