Original article (Basic research)

Effects of different permeating time of penetrating resin on permeating depth of early artificial enamel caries

  • ZHU Xue-hua ,
  • MA Wen-zhu ,
  • LIN Ju-hong
Expand
  • Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Science, Chongqing 401147, China

Online published: 2015-02-27

Supported by

Program of Innovation Team Building at Institutions of Higher Education in Chongqing in 2013

Abstract

Objective To explore the effects of different permeating time of penetrating resin on the penetration depth (PD) of early artificial enamel caries. Methods Fifty healthy premolars without caries that were extracted for orthodontic reason were selected and the model of artificial enamel caries was established. Samples were randomly divided into 5 groups (n=10) and penetrated by the penetrating resin for 1, 2, 2.5, 3, and 4 min, respectively, then cured by light for 60 s. Specimens were prepared after the teeth were sliced and polished and observed under the inverted fluorescence microscope. The lesion depth (LD) and PD were measured and the penetration percentage (PP) was calculated. Results PD of penetrating resin at 1 min was significantly less than that at 3 min. And 90% of maximum LD could be achieved at 2.5 min and the maximum LD could be achieved at 3 min. More permeating time would not significantly affect the PD. The differences were not statistically significant (P>0.05). Conclusion The maximum LD of early enamel caries can be achieved at permeating time of 3 min.

Cite this article

ZHU Xue-hua , MA Wen-zhu , LIN Ju-hong . Effects of different permeating time of penetrating resin on permeating depth of early artificial enamel caries[J]. Journal of Shanghai Jiao Tong University (Medical Science), 2015 , 35(2) : 189 . DOI: 11.3969/j.issn.1674-8115.2015.02.008

Outlines

/