Nasalance Scores as a Function of Skeletal Malocclusion of English-Speaking Adults in the North Indian Population

Sanjeev Verma; Nameksh Raj Bhupali; Satinder Pal Singh; Dharam Vir; Chaman Lal

doi:10.1159/000516225

Nasalance Scores as a Function of Skeletal Malocclusion of English-Speaking Adults in the North Indian Population

Folia Phoniatr Logop. 2022;74(1):78-88. doi: 10.1159/000516225. Epub 2021 Aug 19.

Authors

Sanjeev Verma¹, Nameksh Raj Bhupali², Satinder Pal Singh¹, Dharam Vir³, Chaman Lal¹

Affiliations

¹ Unit of Orthodontics and Dentofacial Orthopaedics, Oral Health Sciences Centre (OHSC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
² Oral Health Sciences Centre (OHSC), PGIMER Satellite Centre, Sangrur, India.
³ Department of Otolaryngology, Audiology and Speech Therapy, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.

PMID: 34412052
DOI: 10.1159/000516225

Abstract

Objective: The objective of this study is quantitative assessment of nasalance for skeletal Class I (normative values), Class II, and III malocclusion in the English language for the North Indian population and to compare the normative values with the nasalance scores obtained from individuals with skeletal Class II and III malocclusion and to evaluate the normative values as a function of gender.

Material and methods: The study was conducted on a total sample of 200 patients with 100, 50, and 50 in group 1 (control group, Skeletal Class I), group 2 (Skeletal Class II), and group 3 (Skeletal Class III), respectively. ANB angle (anteroposterior angle formed by point A, nasion, and point B) measured on lateral cephalogram was used to categorize the patients into 3 groups. The normative nasalance scores were compared for males and females in the control group. The nasalance scores of skeletal Class II and III subjects were compared to the combined normative scores of the control group. The NasalView was used for the objective assessment of nasalance. Oral syllables (/pa/and/pi/), nasal syllables (/ma/and/mi/), and 3 passages (Zoo passage, Rainbow passage, and Nasal sentences) were used to determine the nasalance scores.

Results: The intragroup comparison of nasalance scores in group 1 showed statistically significant differences for different stimuli. The gender-related comparison showed no statistically significant differences in nasalance scores. The intergroup comparison of nasalance scores for skeletal malocclusion showed no statistically significant differences for different stimuli except statistically significant lower nasalance values for nasal sentences in group 3 compared to the control group.

Conclusion: The study concluded that the nasalance scores for nasal sentences in skeletal Class III malocclusion were significantly lower than in the control group and were not statistically significant between the 3 groups for all other stimuli.

Keywords: Dialect; NasalView; Nasalance; Normative; Skeletal malocclusion.

MeSH terms

Female
Humans
Language*
Male
Malocclusion*
Nose
Phonetics