A Longitudinal Study on Salivary Microorgnisms and Immunoglobulin A after Delivery of Fixed Orthodontic Appliances

고정식 교정 장치물 장착후 타액내 미생물과 면역 글로블린 A의 변화

  • 이현경 (서울대학교 치과대학 구강내과학 교실) ;
  • 이광호 (서울대학교 치과대학 구강내과학 교) ;
  • 이승우 (서울대학교 치과대학 구강내과학 교실)
  • Published : 1998.06.01

Abstract

Fixed orthodontic appliances for the treatment of malocclusion has iatrogenic side effect such as demineralization of enamel, gingivitix and gingival hyperplasia. The purpose of this study is to longitudinally investigate the salivary microorganisms and immunoglobulin A after delivery of fixed orthodontic appliances for 10 months. Eight orthodontic patients were included in this study and the author has investigated the numbers of general bacteria, Streptococcus mutans Staphylococcus aureus and concentration of immunoglobulin A from unstimulated whole saliva. The author examined these parameters at prebracketing, 1 month after, 4 months after, 7 months after and 10 months after delivery of fixed orthodontic appliances. The obtained results were as follows : There were significant increases in the number of salivary general bacteria, Streptococcus mutans and Staphylococcus aureus after delivery of fixed orthodontic appliances The numbers of general bacteria were significantly increased at 1 month after (p<005), 4 months after (p<0.05), 7 months after (p<0.01), compared with prebracketing. However it showed no difference at 10 month after compared with 7 months after bracketing. The Numbers of Staphylococcus aureus were significantly increased at 1 month after (p<0.05), 4 months after(p<0.01), 7 month(p<0.01), compared with prebracketing. However it showed decreasing pattern at 10 months after compared with 7 months after bracketing. There was no significant difference in the concentration of immunoglobulin A after delivery of fixed orthodontic appliances.