ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the anesthetic effects and safety of Gow-Gates technique of inferior alveolar nerve block in impacted mandibular third molar extraction.</p><p><b>METHODS</b>A split-mouth study was designed. The bilateral impacted mandibular third molar of 32 participants were divided into Gow-Gates technique of inferior alveolar nerve block (Gow-Gates group) and conventional technique of inferior alveolar nerve block (conventional group) randomly with third molar extracted. The anesthetic effects and adverse events were recorded.</p><p><b>RESULTS</b>All the participants completed the research. The anesthetic success rate was 96.9% in Gow-Gates group and 90.6% in conventional group with no statistical difference ( P= 0.317); but when comparing the anesthesia grade, Gow-Gates group had a 96.9% of grade A and B, and conventional group had a rate of 78.1% (P = 0.034). And the Gow-Gates group had a much lower withdrawn bleeding than conventional group (P = 0.025). Two groups had no hematoma.</p><p><b>CONCLUSION</b>Gow-Gates technique had a reliable anesthesia effects and safety in impacted mandibular third molar extraction and could be chosen as a candidate for the conventional inferior alveolar nerve block.</p>
Subject(s)
Female , Humans , Anesthesia, Dental , Anesthetics , Injections , Mandible , Mandibular Nerve , Molar , Molar, Third , Nerve Block , Tooth ExtractionABSTRACT
<p><b>OBJECTIVE</b>To assess the diagnostic value of high-resolution ultrasonography for detecting of anterior disc displacement without reduction (ADDWR) of temporomandibular joint (TMJ).</p><p><b>METHODS</b>Thirty-five participants with 40 TMJs which were initially diagnosed as ADDWR were included. All the participants got both high-resolution ultrasonography and MRI examination. The results of MRI in diagnosis of ADDWR were considered as gold standard. Sensitivity, specificity, accuracy, positive predict value, negative predict value, positive likelihood ratio and negative likelihood ratio were calculated.</p><p><b>RESULTS</b>In 40 TMJs, MRI revealed that there were 23 TMJs with ADDWR, and 17 disease-free. The sensitivity, specificity, accuracy, positive predict value, negative predict value, positive likelihood ratio and negative likelihood ratio of high-resolution ultrasonography were 82.6%, 94.1%, 92.5%, 0.95, 0.80, 14.04, 0.19, respectively.</p><p><b>CONCLUSION</b>The high-resolution ultrasonography has a relatively high diagnostic value in detecting ADDWR of TMJ.</p>