纯钛金属与聚甲基丙烯酸甲酯树脂材料基托全口义齿修复后的语音学评价

背景:有研究表明口腔中修复体的范围、厚度和形态直接影响患者的语音功能,而纯钛金属基托和树脂基托由于材料厚度的不同对语音功能的影响有所不同.目的:通过分析配戴纯钛金属基托与聚甲基丙烯酸甲酯树脂基托全口义齿同一患者的计算机语音学参数,探讨上颌义齿基托对语音功能的影响.方法:用计算机语音分析系统及语音分析软件PRAAT4.4.34对同一患者分别配戴纯钛金属基托义齿、聚甲基丙烯酸甲酯树脂基托义齿提取辅音/x,sh,r,zh,ch,j,q/第一强频集中区频率值、辅音/g,k,zh,ch,j,q/嗓音起始时间值进行统计学分析,并对两组舌根塞音三维语谱图进行观察比较.结果与结论:聚甲基丙烯酸甲酯树脂基托全口义齿由于基托厚度较大而在一定程度上不利于患者语音功能的恢复,选择纯钛金属基托义齿,减少舌腭区基托厚度更有利于患者语音功能的恢复.结果提示用计算机语音分析系统提取分析第一强频集中区频率值和嗓音起始时间等语音学参数对患者配戴全口义齿后语音清晰度分析具有客观性,上颌义齿舌腭区基托材料厚度越小,越有利于患者语音功能的恢复.

Titanium versus polymethyl methacrylate resin complete denture base A phonology evaluation

BACKGROUND: Several studies have demonstrated that the range,thickness and morphology of oral prosthesis directly influence patient's phonetic function,and titanium base and polymethyl methacrylate(PMMA)resin base yield different influences on phonetic function due to different thicknesses of materials.OBJECTIVE: To analyze the phonetic parameters in one complete denture patient who wear titanium base and PMMA resin base simultaneously and investigate the influences of maxillary complete denture base on phonetic function.METHODS: Through the use of computer-based voice analysis software PRAAT4.4.34,frequency value of the first concentrated frequency area when speaking consonant sounds/x,sh,r,zh,ch,j,q/and voice onset time when speaking consonant sounds/g,k,zh,ch,j,q/were statistically analyzed in the same patient who separately wear titanium complete denture base and PPMA resin complete denture base,and spectrogram of velar stops between complete denture bases was compared.RESULTS AND CONCLUSION: MMPA resin complete denture base was to some extent poor in promoting the recovery of phonetic function owing to great base thickness.Titanium complete denture base with less thickness in the tongue or palate region would help recovery of phonetic function.Extraction and analysis of phonological parameters,such as frequency value of first concentrated frequency area and voice onset time,using CSL computer*based voice analysis system,would provide objective evidence for lamprophony analysis after wearing complete denture.Maxillary denture with thinner base in tongue and palate regions better promotes the recovery of patient's phonetic function.