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OBJECTIVE: To assess the effectiveness of different anesthetic solutions for pain control immediately after the extraction of lower third molars. METHODS: Nine databases were used to identify randomized clinical trials, without restriction of language or year of publication. The "JBI Critical Appraisal Tools for Systematic Reviews" was used to assess the risk of bias in the studies. The network meta-analysis was performed to compare the effectiveness of different anesthetics to control the pain immediately after the surgery of lower third molars, using the standardized mean difference (SMD) as the effect estimate. The GRADE approach was used to assess the certainty of evidence. RESULTS: The search presented 13,739 initial results, from which 45 met the eligibility criteria and presented low to moderate risk of bias. Thirteen studies were included in the meta-analysis. The 2% lidocaine + clonidine presented the lowest pain scores (SMD = - 1.44; - 2.72 to - 0.16) compared to 4% articaine + adrenaline, followed by 0.5% bupivacaine + adrenaline (SMD = - 1.36; - 2.13 to - 0.59). The certainty of evidence varied between very low to moderate. CONCLUSION: 2% lidocaine + clonidine and 0.5% bupivacaine + adrenaline were the anesthetics with the highest probability for pain control immediately after the surgical procedure of removing impacted lower third molars. CLINICAL SIGNIFICANCE: The use of an adequate anesthetic with effective pain control can contribute to a more comfortable postoperative period.

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The temporomandibular joint (TMJ) ankylosis describes the bone or fibrous adhesion of the TMJ components, with functional impairment. The present report shows the surgical correction the TMJ ankylosis due to a condyle fracture in a child. A 12-year-old patient, female, attended to the Oral and Maxillofacial Surgery Department of the Clinical Hospital/Federal University of Uberlândia, showing severe mouth opening limitation (9 mm) and history of bilateral condyle fracture and symphysis fracture. The right TMJ ankylosis was diagnosed, removed, reshaped, and repositioned to form the reshaped condyle, by the sliding reconstruction of the condyle using posterior border of mandibular ramus and myofascial interposition of the temporal fascia. Five months of follow-up showed mouth opening of 44 mm maintained after 2 years, without complaints. The surgical treatment of the TMJ ankylosis is needed for the reestablishment of the immediate function; however, the patient must be watched until the end of development.

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Introdução: Infecções pós-operatórias representam a maior complicação no tratamento de fraturas mandibulares. A utilização de profilaxia antibiótica diminui os índices de infecção, entretanto sua manutenção após o procedimento cirúrgico é controversa na literatura. Objetivo: Comparar o índice de infecção pós-operatória no tratamento de fraturas mandibulares lineares com ou sem profilaxia antibiótica pós-operatória. Metodologia: Foi realizada uma análise retrospectiva transversal para verificar a presença de infecção pós-operatória. Trinta prontuários de pacientes portadores de fraturas mandibulares lineares, tratados por meio de acesso intrabucal e fixação interna estável, foram selecionados e divididos em dois grupos com 15 prontuários cada: pacientes que realizaram apenas profilaxia antibiótica pré-operatória e pacientes que realizaram profilaxia antibiótica pré e pós-operatória por seis dias. Resultado: Foram observadas cinco infecções, sendo três no grupo que realizou apenas profilaxia pré-operatória e duas no grupo que fez uso de antibiótico após o procedimento. Conclusão: Em fraturas mandibulares lineares, a utilização de antibiótico pós-operatório não reduziu o índice de infecções significantemente.

Introduction: Postoperative infections are a major complication in the treatment of mandibular fractures. The use of antibiotic prophylaxis decreases infection rates; however, the maintenance after the surgical procedure is controversial in the literature. Objective: To compare the rates of postoperative infection in the treatment of linear mandibular fractures with or without postoperative antibiotic prophylaxis. Methodology: A retrospective transversal study was performed to analyze for the presence of postoperative infection. Thirty medical records of patients with mandibular fractures, treated by intraoral access and internal fixation were selected and divided into two groups with 15 records each: Patients who only underwent preoperative antibiotic prophylaxis, and patients who underwent pre- and postoperative antibiotic prophylaxis for six days. Result: There were five postoperative infections, three in the group under preoperative prophylaxis and two in the group receiving antibiotics after the procedure. Conclusion: Postoperative antibiotics did not reduce the infection rate in linear mandibular fractures.

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