Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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AN ACOUSTIC ANALYSIS OF ABNORMAL PRONUNCIATION IN CHILDREN WITH ANTERIOR CROSSBITE

전치부 반대교합아동의 발음장애에 관한 음향학적 연구

  • Park, Jeong-Sam (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Jang, Ki-Jaeg (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Lee, Sang-Hoon (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Kim, Chong-Chul (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Shon, Dong-Su (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Kim, Jin-Tae (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University) ;
  • Hahn, Se-Hyun (Dept. of Pediatric Dentistry, College of Dentistry, Seoul National University)
  • 박정삼 (서울대학교 치과대학 소아치과학교실) ;
  • 장기택 (서울대학교 치과대학 소아치과학교실) ;
  • 이상훈 (서울대학교 치과대학 소아치과학교실) ;
  • 김종철 (서울대학교 치과대학 소아치과학교실) ;
  • 손동수 (서울대학교 치과대학 소아치과학교실) ;
  • 김진태 (서울대학교 치과대학 소아치과학교실) ;
  • 한세현 (서울대학교 치과대학 소아치과학교실)
  • Published : 1996.05.31
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Abstract

It has widely known for speech problem in patients with malocclusion, but there have been insufficient studies on degrees of severity. Patients with openbite and Cl III malocclusion usually have speech problem. It has widely known that fricative /s/is pronunciated most abnormally in Cl III malocclusion than any other consonant. Therefore 20 children with anterior crossbite were selected for study groups and 40 children with normal anterior occlusion were selected for control group. 7 sounds such as / 사(sa), 서($s{\delta}$), 소(so), 수(su), 스($s{\omega}$), 시(si), 세(se) / were recorded, and the formants and formants ratios were measured by using Sensimetric Speech Station, which is speech analyzing program in IBM PC. The results were as follows : 1. In anterior crossbite group, F1 of all 7 sounds were significantly higher than normal anterior relationship group(p<0.05). 2. There were no significant difference in F2 between two groups except / 소(so), 수(su)/(p>0.05). 3. In anterior crossbite group, F2/F1 ratio of all 7 sounds were significantly smaller than normal anterior relationship group(p<0.05). 4. There were no significant difference in accordance with tongue position(p>0.05).

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