Tongue position for lingual frenulum assessment

ABSTRACT Purpose: to compare the movements of elevation and protrusion of the tongue in order to determine which position provides better lingual frenulum assessment. Methods: a database of 92 audiovisual recordings of subjects over six-years of age diagnosed with ankyloglossia was used to verify the shape of the tip of the tongue during tongue elevation and protrusion. The Chi-Square Test for Proportion was applied to verify possible differences between the postures of elevation and protrusion. The significance level of 5% (p&lt;0.05) was adopted. Results: the statistical analysis demonstrated that both shapes, i.e., the V-shaped one and the heart-shaped one are more visible during tongue elevation than during tongue protrusion. Conclusion: elevation is the position that allows the best observation of the shape of the tip of the tongue.摘要 研究目的：比较舌抬举与舌前伸两种运动姿态，以明确何种体位更利于舌系带的评估。 研究方法：本研究采用包含92条视听录像的数据库，录像对象为6岁以上确诊舌系带过短（ankyloglossia）的受试者，用于分析舌抬举与舌前伸状态下的舌尖形态；采用卡方比例检验（Chi-Square Test for Proportion）验证两种姿态间的潜在差异，并设定显著性水平为5%（p<0.05）。 研究结果：统计学分析显示，相较于舌前伸姿态，舌抬举状态下V形与心形两种舌尖形态的可见度均更高。 研究结论：舌抬举体位是实现最佳舌尖形态观察的最优选择。