ABSTRACT
BACKGROUND: The objective of this study was to determine the effect of antibiotic prophylaxis in preventing postoperative infections after extraction of impacted mandibular third molars. MATERIAL AND METHODS: A Parallel-group, randomized, blind, placebo-controlled trial was performed. 154 patients were randomly allocated to 2 groups; experimental (n=77) receiving 2g amoxicillin 1 hour prior to surgery and control (n=77) receiving placebo. Primary outcome was postoperative infections and secondary outcome was the need for rescue analgesia. RESULTS: 4.5% of patients developed postoperative infections, five patients of the control group (4 alveolar osteitis, 1 surgical site infection) and two of the experimental group (1 alveolar osteitis, 1 surgical site infection). Difference between groups was not statistically significant, RR=0.4 (95%CI 0.08-1.99, ð±=0.41) NNTB=26. Rescue analgesia intake was significantly higher in the control group (41 vs 18 patients of experimental group) RR=0.49 (95%CI 0.32-0.75, ð±<0.05) NNTB=3. CONCLUSIONS: The use of 2g amoxicillin 1 hour before surgery was not effective in significantly reducing the risk of postoperative infections from impacted mandibular third molars extraction, when compared to placebo. Nevertheless, antibiotic prophylaxis was associated with a reduced need for rescue analgesia.
Subject(s)
Dry Socket , Tooth, Impacted , Antibiotic Prophylaxis , Double-Blind Method , Dry Socket/etiology , Dry Socket/prevention & control , Humans , Molar, Third/surgery , Pain, Postoperative/etiology , Pain, Postoperative/prevention & control , Tooth Extraction , Tooth, Impacted/surgeryABSTRACT
Introducción: La infección del sitio quirúrgico (ISQ) sigue generando gran morbimortalidad, a pesar de los avances en control de infecciones y técnicas quirúrgicas. Objetivos Determinar si en cirugía maxilofacial mayor limpia contaminada el aumento del tiempo operatorio incrementa la proporción de infección del sitio quirúrgico. Materiales y método Estudio observacional analítico en pacientes ASA I intervenidos en cirugía maxilofacial mayor limpia contaminada entre los años 1997 y 2010 en el Hospital Clínico San Borja Arriarán (Santiago, Chile). Las variables medidas fueron género, edad, tiempo operatorio e ISQ. Se realizó un análisis estadístico mediante prueba de Chi cuadrado, test de la t de Student y regresión logística simple, con un IC del 95 por ciento y el paquete estadístico SPSS. Resultados De un total de 522 pacientes presentaron ISQ 36 (6,9 por ciento). Al comparar los 2 grupos, con ISQ y sin ISQ, no hubo diferencias significativas según género (p = 0,319) y edad (p = 0,238), pero sí según tiempo operatorio (p = 0,046). Se obtuvo un OR = 1,003 (IC 95 por ciento = 1,000-1,006) entre el tiempo operatorio y la infección del sitio quirúrgico. Conclusión Se encontraron diferencias significativas en la proporción de ISQ al aumentar el tiempo operatorio. Sin embargo, esta asociación no es clínicamente significativa.
Introduction: Despite advances in infection control and surgical techniques, surgical site infection (SSI) continues to be a cause of high morbidity and mortality. Objectives To determine if operating time increases the proportion of surgical site infections in clean-contaminated maxillofacial surgery. Materials and method This was an observational analytical study, including ASA I patients undergoing clean-contaminated maxillofacial surgery between 1997 and 2010 at the Clinical Hospital San Borja Arriarán (Santiago, Chile). The outcome variable was surgical site infection. Predictor variables were gender, age, operating time and SSI. Statistical analysis was performed using chi-squared test, Student t test, and simple logistic regression. Results A total of 522 patients met the inclusion criteria. The infection rate was 6.9 percent. Statistically significant differences were only observed in the operation time (P = .046) with an Odds ratio of 1.003 (95 percent CI = 1.000-1.006). Conclusion Significant differences in the proportion of SSI were found when operation time increased. However, this association is not clinically significant.