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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2025, Vol. 19 ›› Issue (03): 189-197. doi: 10.3877/cma.j.issn.1674-1366.2025.03.006

• Original Articles • Previous Articles     Next Articles

Nasalance of cleft palate patients with different velopharyngeal closure status

Jiayi Yin1, Min Wu1, Hanyao Huang1, Heng Yin1, Qian Zheng1,()   

  1. 1. State Key Laboratory of Oral Diseases,National Clinical Research Center for Oral Diseases and Department of Oral & Maxillofacial Surgery,West China Hospital of Stomatology,Sichuan University,Chengdu 610041,China
  • Received:2025-03-18 Online:2025-06-01 Published:2025-06-17
  • Contact: Qian Zheng

Abstract:

Objective

To examine the characteristics of nasalance among normal population and cleft palate patients with different velopharyngeal closure status.

Methods

The research enrolled 205 participants,including 27 people without cleft palate,42 patients with unoperated cleft palate and velopharyngeal incompetence(VPI),58 patients with postoperative velopharyngeal competence(VPC)and 78 patients with postoperative VPI.The standard Putonghua speech test material which consised of 84 Chinese vocabularies was used as speech material. Nasalance scores of words contained in the speech material were recorded using the Nasometer Ⅱ6450.

Results

The total nasalance scores exhibited a significant positive correlation with hypernasality ratings(ρ=0.778,P<0.001).Postoperative VPC patients demonstrated nasalance scores similar to those of normal individuals,with statistically significant differences observed in only four words:Ma1 ma(P<0.001),Na2(P<0.001),Mi4 feng1(P = 0.036)and Ni3 hao3(P=0.038).Both preoperative and postoperative VPI patients presented significantly higher nasalance scores compared to the normal group.Specifically,comparisons between normal individuals and preoperative VPI patients revealed no significant differences for only four words:Ma1 ma(P=1.000),Na2(P=1.000),Ni3 hao3(P=1.000)and Niao3(P=1.000). Comparisons between normal individuals and postoperative VPI patients showed no significant differences for six words:Na2(P=0.051),Jia1 ting2(P=0.136),Mi4 feng1(P=1.000),Ni3 hao3(P=1.000),He2 ma3(P=0.091),Xu1 yao4(P=0.182)and Niao3(P=1.000).Words comprising vowel/i/could be used as a sensitive index to detect the velopharyngeal dysfunction and nasal consonants/m//n/ demonstrated little diagnostic value.

Conclusions

The nasalance scores collected by Nasometer could reflect the velopharyngeal closure status of cleft palate patients. The nasalance scores of patients with velopharyngeal incompetence were higher than those of normal speakers and patients with velopharyngeal competence.

Key words: Cleft palate, Speech assessment, Nasalance, Velopharyngeal function

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