Biomedical subjects

Rui Figueiredo

Publications and source records attributed to Rui Figueiredo.

3 recordsLinked to original sources

PubMed2007

Delayed-onset infections after lower third molar extraction: a case-control study.

PURPOSE: To identify possible risk factors for delayed-onset infections and to develop a model for explaining the effects of these risk factors on the occurrence of delayed-onset infections in an outpatient clinic. MATERIALS AND METHODS: A retrospective case-control study comprising a total of 178 lower third molar extractions performed between 2001 and 2004 in the Oral Surgery and Orofacial Implantology Department of the School of Dentistry of the University of Barcelona, Spain. RESULTS: Bivariate analysis showed tooth sectioning, soft tissue and bone retention, and the position of the lower third molar (according to the classifications of Pell and Gregory, and of Winter) to be significantly associated with the development of delayed-onset infections. A logistic regression model included the following independent variables: position of the lower third molar according to Winter, and Pell and Gregory Classes I, II, and III, and degree of soft tissue retention. CONCLUSIONS: Lower third molars with total soft tissue retention, a lack of distal space and with a vertical or mesioangular tilt are more likely to develop delayed-onset infections. Tooth sectioning, bone retention, and depth of inclusion could also be risk factors for such infections. Heavy smokers seem to be more prone to this complication.

Adult↗

PubMed2006

Frequency and evolution of lingual nerve lesions following lower third molar extraction.

PURPOSE: To calculate the frequency of lingual nerve (LN) damage caused by lower third molar extraction and describe the evolution of LN sensitivity as well as the prognosis of LN damage based on preoperative data. PATIENTS AND METHODS: A retrospective study of 4,995 lower third molar extractions performed in 3,513 outpatients of the Department of Oral and Maxillofacial Surgery (University of Barcelona, Spain) between January 1998 and September 2001. RESULTS: Twenty-four extractions (0.5%) resulted in LN impairment. All involved ostectomy, with tooth sectioning in 20 cases. Cox regression analysis showed no risk factors for the persistence of LN injury during lower third molar extraction. The sensitivity recovery rate was greater in the first 3 months and then gradually decreased. CONCLUSION: LN impairment usually recovers, the recovery rate being faster in the first months. LN damage is generally associated with ostectomy and tooth sectioning.

Adolescent↗

PubMed2005

Incidence and clinical features of delayed-onset infections after extraction of lower third molars.

OBJECTIVE: To describe the incidence and clinical features of delayed-onset wound infections after lower third molar extractions in an outpatient clinic. STUDY DESIGN: Retrospective forward study of 958 lower third molar extractions in the Oral Surgery and Implantology Department of the School of Dentistry of the University of Barcelona (Spain). RESULTS: Fourteen delayed-onset wound infections were recorded after suture removal (1.5% of the extractions). These infections usually developed 3-5 weeks after extraction. Half of the cases presented a radiolucency around the crown of the third molar. In most cases, ostectomy (13/14) and tooth sectioning (11/14) had been made. CONCLUSIONS: Delayed infections were a rare postoperative complication of lower third molars extractions. Nevertheless, patients should be warned that infection can still occur several weeks after the surgical procedure.

Adolescent↗