Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Effects of Saliva Contamination on Shear Bond Strength with Conventional, Moisture Insensitive, and Self-Etching Primers

Moisture Insensitive Primer와 Self-Etching Primer를 사용한 교정용 브라켓 접착 시 타액오염이 전단결합강도에 미치는 영향 비교

  • Oh, Yoonjeong (Department of Pediatric Dentistry, Dental Clinic Center, Hallym University Sacred Heart Hospital) ;
  • Oh, Sohee (Department of Pediatric Dentistry, Dental Clinic Center, Hallym University Sacred Heart Hospital)
  • 오윤정 (한림대학교 의과대학 한림대학교성심병원 소아치과학교실) ;
  • 오소희 (한림대학교 의과대학 한림대학교성심병원 소아치과학교실)
  • Received : 2018.06.24
  • Accepted : 2018.07.17
  • Published : 2019.02.28
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Abstract

The aim of this study was to compare the shear bond strengths of orthodontic bracket with Conventional primer (CP), Moisture insensitive primer (MIP), and Self-etching primer (SEP). In addition, the effect and the timing of saliva contamination on shear bond strength was evaluated. A total of 135 bovine mandibular incisors were used in the study and divided into 3 groups. Group I, II and III were used CP, MIP, SEP, respectively. Each group was then divided into three subgroups: the group without saliva contamination, the group with primer application after saliva contamination, and the group with saliva contamination after primer application. After the primer application, the metal bracket for the lower incisor was attached and the shear bond strength was measured. The mean shear bond strengths was highest with CP and lowest with SEP in dry condition. However, CP showed a significant decrease in shear bond strength in the presence of saliva contamination. MIP and SEP showed no significant decrease in shear bond strength with saliva contamination.

이 연구의 목적은 브라켓 부착 시 Conventional primer (CP), Moisture insensitive primer (MIP), Self-etching primer (SEP)을 사용하였을 때의 전단결합강도를 비교하고, 타액 오염 여부와 타액 오염의 시기가 전단결합강도에 미치는 영향을 평가하는 것이다. 총 135개의 소의 하악 절치가 연구에 사용되었다. 시편은 I, II, III 3개의 군으로 나누어 CP, MIP, SEP를 사용하여 브라켓을 부착하였다. 각 군은 3개의 하위군으로 나누어져서 타액 오염이 없는 군, 타액 오염 후 프라이머를 도포한 군, 프라이머 도포 후 타액 오염이 있는 군으로 설정하고 전단결합강도를 측정하였다. 연구 결과, 건조한 환경에서 전단결합강도는 CP, MIP, SEP의 순서로 높게 나타났다. CP는 타액 오염이 있는 경우에는 유의한 전단결합강도의 저하를 보였다. MIP, SEP를 사용한 경우에는 프라이머 도포 전 후 타액 오염이 있는 경우에 약간의 전단결합강도의 저하를 보였지만, 건조한 환경에서와 비교하여 유의한 차이는 보이지 않았다. 따라서 브라켓 접착 시 타액의 격리가 힘든 상황에서는 MIP 또는 SEP의 사용이 브라켓 전단결합강도의 저하를 방지하기 위하여 유용할 것으로 보인다.

Keywords

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