无牙颌患者戴不同厚度的上腭托对连续发[n]音时下颌位置的影响

目的:研究不同厚度的上腭托对无牙颌患者连续发n]音时下颌位置的影响。方法:10名无牙颌患者,平均年龄为76.4岁。每一个患者按照随机原则,在不戴上腭托(对照组)和分别戴用3 mm、5 mm的上腭托时,用K7下颌运动轨迹描记仪记录下颌的位置,包括连续发n]音4 s时下颌的位置和下颌息止颌位。结果:不戴上腭托(对照组)连续发n]音时,垂直向的颌间距离的平均值为(1.69±1.26)mm,前后向的平均值为(1.74±1.18)mm,戴入实验上腭托后,在垂直向和水平向的颌间距离都稍有增加,但差异无统计学意义。不戴实验上腭托(即对照组)的息止颌位时,在垂直方向和水平方向的颌间距离的平均值分别是(2.91±2.28)mm和(2.56±1.88)mm,戴入实验上腭托后,在垂直向和水平向的颌间距离都稍有减小,即戴3 mm上腭托分别为(2.52±1.88)mm和(2.46±1.64)mm;戴5 mm上腭托的颌间距离分别为(2.45±1.70)mm和(2.22±1.31)mm,但差异无统计学意义。结论:总义齿患者连续发n]音时,戴不同厚度的上腭托对下颌的颌间距离没有显著影响;总义齿患者戴不同厚度的上腭托对下颌息止颌位没有明显影响。

Influence of experimental palatal plate on mandibular position during continuous [n] phonation in complete denture wearers

Objective:To clarify the influence of an experimental palatal plate on the mandibular position during continuous n] phonation and at the physiological rest position in complete denture wearers.Methods: Ten complete denture wears volunteers were investigated.Two kinds of experimental palatal plate with a thickness of 3 mm and 5 mm(from the denture basal surface to denture polished surface) were fabricated and used for each subject.The mandibular position was recorded by a K7 mandibular kinesiograph during c...