The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
권호 표지

Comparison of microtensile bond strength on non-carious cervical lesions according to biofilm removal method

생체막 제거 방법에 따른 비우식성 치경부 병소의 미세인장강도 비교

  • Sung, Kun-Hwa (Department of Conservative Dentistry, School of Dentistry, Chosun University) ;
  • Min, Jeong-Bum (Department of Conservative Dentistry, School of Dentistry, Chosun University) ;
  • Park, Tae-Young (Department of Conservative Dentistry, School of Dentistry, Chosun University)
  • 성건화 (조선대학교 치과대학 치과보존학 교실) ;
  • 민정범 (조선대학교 치과대학 치과보존학 교실) ;
  • 박태영 (조선대학교 치과대학 치과보존학 교실)
  • Received : 2020.03.31
  • Accepted : 2020.07.24
  • Published : 2020.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Dentin surface of non-carious lesion is usually attached with oral biofilm. The biofilm should be removed before application of restorative material, because it may reduce the bond strength of adhesive system. The aim of this study was to evaluate the microtensile bond strength, when the biofilm was removed with brush or bur. Twenty extracted human third molars were sectioned horizontally to obtain dentin surface. Specimen were divided randomly into four group. Biofilm formation was performed in three group, except for Group 1 (negative control). Biofilm was removed as follows: Group 3, using ICB brush; Group 4, using lowspeed round bur #2. Group 2 (positive control) was not removed Biofilm. And in all four groups, the adhesive system (Optibond FL, Kerr) was applied to etched dentin surface, and resin composite was built up in three 1mm increments. After 24 hour storage in distilled water, the teeth were perpendicularly sectioned to obtain beams (1 × 1 mm2). Microtensile bond strength was measured and the data were statistically analyzed using one-way ANOVA and Tukey's post hoc test (p<0.05). Group 4 showed the highest microtensile bond strength (p<0.05), Group 3 showed no significant improvements when compared to Group 1. Group 2 showed lowest microtensile bond strength (p<0.05). When restoring a non-carious cervical lesion, it is essential to remove the biofilm present on the dentin surface. In addition, in the method of removing the biofilm, both the brush removal method and the bur removal method were effective.

Keywords

Acknowledgement

This study was supported by research funds from Education and Cultural Foundation of College of Dentistry, Chosun university, 2020.

References

  1. Pecie R, Krejci I, Garcia-Godoy F, Bortolotto T. Noncarious cervical lesions-A clinical concept based on the literature review. Part 1: Prevention. American journal of dentistry 2011;24:49.
  2. Grippo JO, Simring M, Schreiner S. Attrition, abrasion, corrosion and abfraction revisited: a new perspective on tooth surface lesions. The Journal of the American Dental Association 2004;135:1109-1118. https://doi.org/10.14219/jada.archive.2004.0369
  3. Grippo JO. Noncarious cervical lesions: the decision to ignore or restore. Journal of Esthetic and Restorative Dentistry 1992;4:55-64. https://doi.org/10.1111/j.1708-8240.1992.tb00721.x
  4. 김광훈, 우성관, 손권, 박정길. 5 급 병소가 있는 치아 유한요소 모델의 수복 방법 최적화. 대한기계학회 논문집 A 권 2008;32:678-684.
  5. Pashley DH, Sano H, Ciucchi B, Yoshiyama M, Carvalho RM. Adhesion testing of dentin bonding agents: a review. Dental Materials 1995;11:117-125. https://doi.org/10.1016/0109-5641(95)80046-8
  6. Sano H, Shono T, Sonoda H, Takatsu T, Ciucchi B, Carvalho R, et al. Relationship between surface area for adhesion and tensile bond strength-evaluation of a micro-tensile bond test. Dental Materials 1994;10:236-240. https://doi.org/10.1016/0109-5641(94)90067-1
  7. Kim H-J, Hur B, Kim H-C. The effect of adhesive property on microtensile bond strength to human dentin. Journal of Korean Academy of Conservative Dentistry 2004;29:281-287. https://doi.org/10.5395/JKACD.2004.29.3.281
  8. Reis AF, Giannini M, Ambrosano GMB, Chan DC. The effects of filling techniques and a low-viscosity composite liner on bond strength to class II cavities. Journal of dentistry 2003;31:59-66. https://doi.org/10.1016/S0300-5712(02)00122-7
  9. 오은화, 최경규, 김종률, 박상진. Chlorhexidine 처리가 상아질 접착제의 미세인장결합강도에 미치는 영향. 대한치과보존학회지 2008;33:148-161.
  10. Park J, Lee K. The influence of salivary contamination on shear bond strength of dentin adhesive systems. OPERATIVE DENTISTRYUNIVERSITY OF WASHINGTON-. 2004;29:437-442.