The influence of tobacco on early dental implant failure.
OBJECTIVE
The purpose of this study was to assess tobacco use as a risk factor for early implant failure.


METHODS
To address the research aim, a retrospective study design was used, and a study sample was derived from among patients who had 1 or more implants inserted between July 1996 and July 2004. The main predictor variable was the frequency of tobacco use. The major outcome variable was early implant failure. Appropriate descriptive, bivariate, and multivariate statistics were computed.


RESULTS
The study sample was composed of 650 patients who had 1,628 implants inserted and were selected for analysis. The early implant loss rates found in the nonsmoking group and the smoking group were 3.32% and 2.81%, respectively. Univariate and bivariate analyses showed no statistical significance for early implant losses associated with the frequency of tobacco use.


CONCLUSIONS
The results of this study suggest that tobacco use alone cannot be considered as a factor for risk related to early implant failures. Prospective studies are needed to assess the risk of early implant failure in conjunction with smoking.
Sverzut
Alexander Tadeu
AT
Division of Oral and Maxillofacial Surgery, State University of Campinas, Piracicaba, São Paulo, Brazil.
Stabile
Glaykon Alex Vitti
GA
de Moraes
Márcio
M
Mazzonetto
Renato
R
Moreira
Roger William Fernandes
RW
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D016013:Likelihood Functions; D008297:Male; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*; D014026:Nicotiana
D015921:Dental Implants