Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

The Effect of Restorative Method on Fracture Strength and Fracture Pattern in Endodontically Treated Teeth

근관 치료 후 수복 방법이 파절 강도와 파절 양상에 미치는 영향

  • An, Dong-Gook (Dept. of Prosthodontics, Graduate School, Dankook University) ;
  • Cho, In-Ho (Dept. of Prosthodontics, Graduate School, Dankook University) ;
  • Shin, Soo-Youn (Dept. of Prosthodontics, Graduate School, Dankook University)
  • 안동국 (단국대학교 치과대학 보철학 교실) ;
  • 조인호 (단국대학교 치과대학 보철학 교실) ;
  • 신수연 (단국대학교 치과대학 보철학 교실)
  • Published : 2005.11.30
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Abstract

The purpose of this study was to evaluate interaction of restorative method according to amount of remaining clinical crown length. For the study, sixty healthy mandibular premolars with no dental caries were chosen. Specimens with clinical crown length of 1 mm, 2 mm, 3 mm above the cemento-enamel junction(CEJ) were prepared and root canal treatment was conducted using Ni-Ti rotaty files. Thirty specimens were restored with $LuxaCore^{(R)}$ and thirty were restored with casting posts. All specimens were restored with full coverage crowns and the fracture strength was teseted with the MTS universal testing marchine. The fracture pattern was observed by measuring the distance between CEJ and fracture line. From the results above, the fracture strength seems to be influenced more by amount of remaining clinical crown length than restorative method. Good prognosis could be expected, when more than 2mm of clinical crown length is retained. In the future, the further studies on restorative method, to increase fracture strength of teeth will be necessary.

Keywords

References

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