China Journal of Oral and Maxillofacial Surgery ›› 2023, Vol. 21 ›› Issue (4): 372-376.doi: 10.19438/j.cjoms.2023.04.009

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The relationship between nasalance and velopharyngeal closure status after cleft palate surgery

GAO Tao1, MA Lian2, LUO Yi2, SUN Yong-gang2   

  1. 1. Department of Stomatology, Beijing Jishuitan Hospital. Beijing 100035;
    2. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology; National Clinical Research Center for Oral Diseases; National Engineering Laboratory for Digital and Material Technology of Stomatology; Beijing Key Laboratory of Digital Stomatology. Beijing 100081, China
  • Received:2023-02-24 Revised:2023-04-20 Online:2023-07-20 Published:2023-08-16

Abstract: PURPOSE: To investigate the relationship between nasalization rate and palatopharyngeal closure in patients with secondary structural speech disorder after cleft palate surgery. METHODS: A total of 407 speech samples of patients with postoperative cleft palate speech disorders without speech substitution from the Department of Oral and Maxillofacial Surgery, School of Stomatology, Peking University were included. The nasal sound meter and nasopharyngeal fiber endoscope were used to record the nasal phonation rate and the score of nasopharyngeal fiber endoscopic visual analog scale (VAS) of the speech samples. The nasal phonation rate values and VAS values were compared by Pearson analysis. SPSS 13.0 software package was used for data analysis. RESULTS: There was negative correlation between nasal phonetic rate and VAS value of 407 speech samples. Velopharyngeal insufficiency was worse, and nasal phonetic rate was higher. There was a significant negative correlation between nasal phonetic rate and VAS value of 296 non-nasal speech samples. According to VAS values of 296 non-nasal speech samples, it suggested if nasalance scores was below 30%, complete or marginal velopharyngeal closure was considered. If nasalance scores is between 30% and 50%, mild velopharyngeal impairment should be considered. If nasalance scores was over 50%, medium or severe velopharyngeal impairment should be considered. CONCLUSIONS: The study showed nasometer can give a clue preliminarily of the velopharyngeal closure status in patients with hypernasality and nasal air emission objectively.

Key words: Cleft palate, Velopharyngeal insufficiency, Nasalance, Nasopharyngeal fiber endoscopy

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