Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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AN ACOUSTIC ANALYSIS ON THE PRONUNCIATION OF KOREAN VOWELS IN PATIENT WITH CLASS III MALOCCLUSION

III급 부정교합 환자의 한국어 모음 발음에 관한 음향학적 분석

  • Kim, Young-Ho (Department of Orthodontics, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Yoo, Hyun-Ji (Graduate Program in Speech and Language Pathology, Yonsei University) ;
  • Kim, Whi-Young (The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Hong, Jong-Rak (Department of Oral & Maxillofacial Surgery, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 김영호 (성균관의대 삼성서울병원 치과진료부 교정과) ;
  • 유현지 (연세대학교 대학원 언어병리학 협동과정) ;
  • 김휘영 (성균관의대 삼성서울병원 치과진료부) ;
  • 홍종락 (성균관의대 삼성서울병원 치과진료부 구강악안면외과)
  • Published : 2009.08.31
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Abstract

The purpose of the study was to investigate the characteristics of the pronunciation of Korean vowels in patients with class III malocclusion. 11 adult male patients with class III malocclusion(mean ages 22.3 years) and four adult males with normal occlusion(mean ages 26.5 years) were selected for the analysis of eight Korean monophthongs /ㅣ, ㅔ, ㅐ, ㅏ, ㅓ, ㅗ, ㅡ, ㅜ/. The values and relationships of F1, F2 and F3 were derived from the stable section of target vowel in each sentence, and the analysis using formant plots and vowel triangles' distance and area was conducted to find the features of two groups' vowel distributions. Consequently, it was identified that the pronunciation of males patients with class III malocclusion showed high values of F1 in the low vowels, high values of F2 in the back vowels, and remarkably low position of /ㅏ/. The vowel triangle suggested that the triangle areas of male patients with class III malocclusion were shown wider vertically and narrower horizontally than those of males with normal occlusion. These characteristics could reflect the structural features of class III malocclusion such as the prognathic mandible, low tongue position, and advancement of back position of the tongue.

Keywords

References

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