Abstract
구강질환은 단독 진행만이 아닌 혼합감염증으로 발생하므로 치아우식증 및 치주질환에 관여하는 원인 균주들의 명확한 분석이 필요하다. 이에, 본 연구는 치아우식증 및 치주질환의 원인균으로 잘 알려져 있는 세균을 검출하기 위해 타액을 채취하였다. 성인의 연령, 흡연 및 음주, 질병유무에 따른 구강세균분포 차이를 보고 구강세균의 위험요소를 확인하고자 한다. 본 연구 대상은 20대 이상 65세 미만 성인 120명을 대상으로 2014년 3월 15일 - 5월 10일까지 조사하였다. 타액 내 gDNA를 추출 후 PCR 방법을 이용하여 구강질환의 균 분포도를 확인하였다. 그 결과, S. mutans는 72명, P. intermedia 88명, S. mutans와 P. intermedia 균이 모두 검출된 성인은 54명, 구강세균이 검출되지 않은 성인은 14명으로 나타났다. 구강세균의 위험 요소 결과, 흡연자는 비흡연자에 비해 S. mutans 2.8배, P. intermedia 3.5배 더 높게 나타났다. 음주자는 비음주자에 비해 S. mutans 검출 위험도가 3.3배 더 높은 것으로 나타났으며, 전신질환자는 정상인에 비해 P. intermedia 검출된 위험도가 4.1배 더 높은 것으로 나타났다. 흡연, 음주, 전신질환은 구강 내 세균 검출위험도가 높은 인자임을 확인할 수 있었다. 또한 연령이 증가할수록 치주질환 세균이 더 많이 검출되었으며, 20대는 치아우식증과 치주질환이 공존하는 연령대인 만큼 구강세균의 분포가 더 두드러지게 나타남을 알 수 있었다. 구강세균이 검출된 성인은 치아우식증과 치주질환에 이환될 위험도가 그만큼 높다고 볼 수 있으므로, 구강환경을 청결히하고 정기적인 치과방문을 통해 구강질환을 예방해야 할 것이다. As oral diseases are developed by mixed infections, not by any single element, an accurate analysis of the causative microorganisms related to dental caries and periodontal diseases is required. In this study, saliva was collected from selected adults to determine if the bacteria that are well known as the causative microorganisms of dental caries and periodontal diseases would be detected in their saliva. In addition, this study examined whether there would be any differences among adults according to age, smoking, drinking and presence or absence of diseases in the distribution of oral bacteria to determine the risk factors for oral bacteria. The study subjects were 120 adults ranging in age from 20 to 65 years. The experiment data was collected from March 15, to May 2014. The gDNA was collected from the saliva, and the distribution of bacteria for oral diseases was investigated by PCR. The findings of the study were as follows. S. mutans was detected from 72 adults, and P. intermedia was detected from 88 adults. Both bacteria were detected from 54 adults, and no oral bacteria was detected in 14 adults. An analysis of the risk factors of oral bacteria showed that smokers had a 2.8-fold higher risk of S. mutans than nonsmokers, and the former had a 3.5-fold higher risk of P. intermedia than the latter. Drinkers had a 3.3-fold higher risk of S. mutans than nondrinkers. Patients who suffered from systemic diseases had a 4.1-fold higher risk of P. intermedia than those with no diseases. Therefore, smoking, drinking and systemic diseases are factors that increase the likelihood of oral bacteria detection. More periodontal disease bacteria were detected from older adults, and more oral bacteria were found in adults who were in their 20s, as dental caries and periodontal diseases were more common in this age group. The adults in which oral bacteria were detected are more likely to have dental caries or periodontal diseases, and they should try to keep their mouth cavity clean and make regular visits to a dental clinic to prevent possible oral diseases.
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