Portal de Periódicos da CAPES

Early implant failure. Prognostic capacity of Periotest ® : retrospective study of a large sample

2006; Wiley; Volume: 17; Issue: 4 Linguagem: Inglês

10.1111/j.1600-0501.2006.01250.x

1600-0501

Blas Noguerol, Ricardo Muñoz, Francisco Mesa, Juan de Dios Luna, Francisco O’Valle,

Dental Radiography and Imaging

Abstract Objectives: The objectives of this study were to determine the accuracy of Periotest ® to monitor primary implant stability at first‐stage surgery, to identify by multivariate analysis the variables associated with early implant failure and to compare Periotest ® with radiographic study in the diagnosis of implant stability at second‐stage surgery (during osseointegration period). Material and methods: A 10‐year retrospective study was conducted on 1084 Brånemark ® implants placed in 316 patients. Clinical variables, implant diameter and length, Periotest ® values (PTVs) and radiological variables were analyzed in bivariate and multivariate studies in order to determine their influence on early implant failure. Results: After examination of the sensitivity and specificity values obtained for different PTV cutoff points, a cutoff PTV of −2 was selected (84% sensitivity and 39% specificity). In the bivariate analysis, early failure was significantly related to smoking habits, implant location, bone type, implant features and PTVs (−2 and ≥−2). In the final multiple logistic model, only age (odds ratio (OR)=4.53; 95% confidence interval (CI), 1.34–15.27), smoking habits (OR=2.5; 95% CI, 1.3–4.79), bone type (OR=1.93; 95% CI, 1.01–3.7) and PTV at first surgery (OR=3.01; 95% CI, 1.5–6.02) were independently related to early failure. Conclusions: The Periotest ® (with −2 cutoff) at first surgery offers high sensitivity in the prognosis of early implant loss and shows a greater capacity to evaluate stability during the osseointegration period compared with radiographic study.