肯氏Ⅰ类缺失不同大连接体对语音和舒适度的影响

Effects of different major connectors on pronunciation and comfort in Kennedy Ⅰ dentition defect

目的分析上颌肯氏Ⅰ类缺失4种大连接体,即腭板(1型)、单一宽腭杆(2型)、前后联合宽腭杆(3型)、前后联合腭杆(4型)对发音和舒适度的影响。方法选取30例志愿者分别戴入4种大连接体,应用计算机语音分析系统对辅音/s/、/sh/、/t/、/j/进行检测,并对不同辅音的第一、二共振峰值(F1和F2)进行分析;同时通过问卷调查比较4种大连接体的舒适程度。结果 1)4种大连接体戴入后,/s/、/sh/、/t/音的F1、F2与戴入前的差异无统计学意义(P>0.05);3、4型连接体戴入后,/j/音的F1、F2与戴入前的差异有统计学意义(P<0.05)。2)4种连接体的舒适度之间无明显差异(P>0.05)。结论肯氏Ⅰ类缺失4种大连接体中,1、2型大连接体对语音的影响更小,而4种大连接体的舒适度无明显差异。

Objective To analyze the effect on pronunciation and comfort level when 4 different major connectors （type 1： Palatal plate; type 2： Single palatal strap; type 3： Anterior-posterior joint palatal strap; type 4： Anterior-posterior joint palatal bar） were used in patients with Kennedy I deletion. Methods Tirty young volunteers were chosen to wear 4 different major connectors. The pronunciation of consonants /s/, /t/, /j/, /sh/ were detected and the different formant parameters （F1 and F2） were analyzed by the computer speech analytical system. The comfort levels of 4 major connectors were compared by questionnaire survey. Results 1）There was no significant differenee（P〉O.05） in pronunciation of consonants /s/, /sh/, /t/（F1 and F2） among the 4 types of connectors whatever wearing or not, but there was significant difference（P〈0.05） in pronunciation of consonant/j/among wearing type 3, type 4 and no wearing, 2）There was no significant difference in comfort level（p〉0.05） among the four connectors. Conclusion The effect on pronunciation of patients with Kennedy I deletion was less when wearing the first and the second types of connectors than that of wearing the third and the fourth types of connectors. There was no significant difference in comfort level among the four connectors.