al. Preemptive use of intravenous ibuprofen to reduce postoperative pain after lower third molar surgery: a systematic review of randomized controlled trials. Clinics (Sao Paulo).

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This study aimed to evaluate the efficacy of ozone as a supporting therapy in reducing pain, edema, and trismus after lower third molar extraction. The protocol was registered in PROSPERO. Six electronic databases (PubMed, Scopus, LILACS, SciELO, Embase, and Web of Science) were used. Only randomized clinical trials were included, without restriction of year, language, and publication status. The JBI tool was used to assess the risk of bias. The GRADE approach assessed the certainty of evidence. The search yielded 3386 results, from which only three articles were eligible. The studies were published between the years 2013 and 2017, resulting in a sample of 133 patients. Ozone was used in the form of gas or gel. All studies found significant results for pain reduction after one, three, and seven days. Success in reducing trismus and edema varied between studies. The risk of bias varied between moderate and low. All outcomes were classified as a very low level of certainty. Although presenting favorable results for pain reduction, there is insufficient evidence to indicate the use of ozone as a complementary therapy during the extraction of third molars.

The present study aimed to characterize the procedures performed by the oral and maxillofacial surgery team at a Brazilian reference hospital in a Brazilian city, as well as to describe the time trend of the number of services related to different types of surgery. It is a time-series study that assessed the data from the medical records of patients assisted at a reference hospital in a city in the state of Mato Grosso (Brazil), from 2011 to 2017. The data were assessed using descriptive statistical analysis, correspondence analysis (CA), and time trend analysis. A total of 1488 medical records were evaluated, the majority of which corresponded to male patients (59%), extractions were the most performed procedures (46.2%), local anesthesia was the most applied technique (50.3%), and the procedures were mostly performed in an outpatient environment (53.2%). There was a decreasing global time trend (R 2 = 0.248; p < 0.001). Male patients are the most assisted in hospital care and are particularly related to more invasive procedures; there is also a decreasing curve of assistance over the years in the oral and maxillofacial surgery and traumatology service of the hospital studied.