Zakkula Srujana, B Sreedevi, Anne Gopinadh, Manne Prakash, Bindu O Swetha Hima, Atla Jyothi, Deepthi Sneha, Chaitanya A Krishna
Assistant Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
J Clin Diagn Res. 2014 Apr;8(4):ZC11-3. doi: 10.7860/JCDR/2014/7654.4224. Epub 2014 Apr 15.
Prosthodontic treatment involves clinical procedures which influence speech performance directly or indirectly. Prosthetic rehabilitation of missing teeth with partial or complete maxillary removable dentures influences the individual voice characteristics like Phonation, resonance etc.
To evaluate the effect of Acrylic palatal plate thickness (1mm-3mm) of maxillary prosthesis on phonation.
Twelve subjects were selected randomly between the age group of 20-25 years who have full complement of teeth and have no speech problems. Speech evaluation was done under four experimental conditions i.e. Without any experimental acrylic palatal plate (control), with experimental acrylic palatal plates of thickness 1 mm, 2 mm and 3 mm respectively. The speech material for phonation test consisted of Vowels sounds /a/, /i/, and /o/. Speech analysis to assess phonation was done using digital acoustic analysis (PRAAT software). The obtained results were statistically analyzed by One-way ANOVA and Tukey's multiple post-hoc for comparison of four experimental conditions with respect to different vowel sounds.
Mean harmonics to noise ratio (HNR) values obtained for all the Experimental conditions did not show significant difference (p>0.05). In conclusion, an increase in the thickness of the acrylic palatal plate of maxillary prosthesis for about 1 mm - 3mm in complete or partial maxillary removable dentures resulted in no significant effect on phonation of vowel sounds /a/, /i/ and /o/.
Increasing the thickness of the palatal plate from 1 mm to 3 mm has not shown any significant effect on the phonation.
口腔修复治疗涉及直接或间接影响言语表现的临床操作。使用部分或全上颌可摘义齿修复缺失牙会影响个体的语音特征，如发声、共鸣等。
评估上颌修复体丙烯酸腭板厚度（1毫米至3毫米）对发声的影响。
随机选取12名年龄在20至25岁之间、牙齿完整且无言语问题的受试者。在四种实验条件下进行言语评估，即不使用任何实验性丙烯酸腭板（对照组），分别使用厚度为1毫米、2毫米和3毫米的实验性丙烯酸腭板。发声测试的言语材料包括元音/a/、/i/和/o/。使用数字声学分析（PRAAT软件）进行言语分析以评估发声。通过单因素方差分析和Tukey多重事后检验对所得结果进行统计学分析，以比较四种实验条件下不同元音的情况。
所有实验条件下获得的平均谐波噪声比（HNR）值均未显示出显著差异（p>0.05）。总之，在上颌全口或部分可摘义齿中，上颌修复体丙烯酸腭板厚度增加约1毫米至3毫米对元音/a/、/i/和/o/的发声没有显著影响。
将腭板厚度从1毫米增加到3毫米对发声没有显示出任何显著影响。
