Journal of Jilin University(Medicine Edition) ›› 2022, Vol. 48 ›› Issue (1): 59-64.doi: 10.13481/j.1671-587X.20220108

• Research in basic medicine • Previous Articles     Next Articles

Occurrence and influence factors of microleakage in classⅤcavities filled with three different flowing materials in vitro

Wentao GENG1,2,Jinfang XIE1,Yingli ZHANG1,Xia LIU1(),Shuo YIN3()   

  1. 1.Department of Oral Comprehensive Treatment,Stomatology Hospital,Jilin University,Changchun 130021,China
    2.Department of Stomatology,No 904 Hospital,Joint Logistic Support Force,People’s Liberation Army,Wuxi 214000,China
    3.Department of Prosthodontics,Changchun Dental Hospital,Jilin Province,Changchun 130041,China
  • Received:2021-07-14 Online:2022-01-28 Published:2022-01-17
  • Contact: Xia LIU,Shuo YIN E-mail:liu_xia@jlu.edu.cn;934232260@qq.com

Abstract: Object

To compare the degrees of occurrence of microleakage of class Ⅴ cavities of the isolated teeth filled with three flowing materials Z350XT flowing resin, Beautifil Flow Plus F00 and PRG Barrier Coat and the influence of saliva, and to select the suitable materials for wedge-shape defects.

Methods

A total of 42 isolated first premolars were selected,and 24 isolated teeth were used in the experiment without saliva and were randomly divided into 4 groups: Z350XT flowing resin, Beautifil Flow Plus F00, PRG Barrier Coat and glass ionomer cement (GIC) (n=6). A total of 18 isolated first premolars were used in the experiment with saliva and were randomly divided into 3 groups: Z350XT flowing resin, Beautifil Flow Plus F00 and PRG Barrier Coat (n=6).The class Ⅴ cavity was made on the facial surface of each isolated tooth in the experiment without saliva and was filled with the corespondent materials. The samples in the experiment with saliva were soaked in artificial saliva after coated with 3M single bond universal adhesive, and then were filled with the correspondent materials. After thermocycling, the apical foramens were closed with plastomer and the samples were stained with methylene blue solution. The sections were made. The dye depths,namely microleakage degrees,of the isolated tooth in each group were observed and measured under stereoscopic microscope,and the microleakage degree scores were calculated.

Results

In the experiment without saliva,the microleakage degree and the microleakage score in GIC group were higher than those of the other groups without salivaP<0.05);the microleakage degree and the microleakage degree score in PRG Barrier Coat group were higher than those in 350XT flowing resin group and Beautifil Flow Plus F00 group(P<0.05);the microleakage degrees and the microleakage degree scores in gingival walls in various groups were higher than those of occlusal walls of the same material (P<0.05).In the experiment with saliva,there were no differences in the microleakage eakage degrees and the microleakage degree scores among various groups(P>0.05);the microleakage degrees and the microleakage degree scores in each group with saliva were higher than those of the same material without saliva (P<0.05).

Conclusion

As materials for filling class Ⅴ cavities, Z350XT flowing resin and Beautifil Flow Plus F00 are superior to PRG Barrier Coat and GIC. It should be widely promoted in clinical practice. Prevention of saliva contamination is critical to reducing microleakage.

Key words: Flowable materials, Class Ⅴ cavity, Microleakage, Z350XT flowing resin, Beautifil Flow Plus F00, PRG Barrier Coat

CLC Number: 

  • R783.1