DOI QR코드

DOI QR Code

Influence of modification in core building procedure on fracture strength and failure patterns of premolars restored with fiber post and composite core

  • Kim, Young-Hoi (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Lee, Jong-Hyuk (Department of Prosthodontics, College of Dentistry, Dankook University)
  • Received : 2012.01.06
  • Accepted : 2012.02.16
  • Published : 2012.02.29

Abstract

PURPOSE. The influence of the modified process in the fiber-reinforced post and resin core foundation treatment on the fracture resistance and failure pattern of premolar was tested in this study. MATERIALS AND METHODS. Thirty-six human mandibular premolars were divided into 4 groups (n = 9). In group DCT, the quartz fibre post (D.T. Light-post) was cemented with resin cement (DUO-LINK) and a core foundation was formed with composite resin (LIGHT-CORE). In group DMO and DMT, resin cement (DUO-LINK) was used for post (D.T. Lightpost) cementation and core foundation; in group DMO, these procedures were performed simultaneously in one step, while DMT group was accomplished in separated two steps. In group LCT, the glass fiber post (LuxaPost) cementation and core foundation was accomplished with composite resin (LuxaCore-Dual) in separated procedures. Tooth were prepared with 2 mm ferrule and restored with nickel-chromium crowns. A static loading test was carried out and loads were applied to the buccal surface of the buccal cusp at a 45 degree inclination to the long axis of the tooth until failure occurred. The data were analyzed with MANOVA (${\alpha}$= .05). The failure pattern was observed and classified as either favorable (allowing repair) or unfavorable (not allowing repair). RESULTS. The mean fracture strength was highest in group DCT followed in descending order by groups DMO, DMT, and LCT. However, there were no significant differences in fracture strength between the groups. A higher prevalence of favorable fractures was detected in group DMT but there were no significant differences between the groups. CONCLUSION. The change of post or core foundation method does not appear to influence the fracture strength and failure patterns.

Keywords

References

  1. Terry DA. Triolo Jr PT, Swift Jr EJ. Fabrication of direct fiber-reinforced posts: a structure design concept. J Esthet Restor Dent 2001;13:228-40. https://doi.org/10.1111/j.1708-8240.2001.tb00269.x
  2. Stewardson DA. Non-metal post systems. Dent Update 2001;28:326-36. https://doi.org/10.12968/denu.2001.28.7.326
  3. Freedman GA. Esthetic post-and-core treatment. Dent Clin North Am 2001;45:103-4.
  4. Maccari PC, Cosme DC, Oshima HM, Burnett LH Jr, Shinkai RS. Fracture strength of endodontically treated teeth with flared root canals and restored with different post systems. J Esthet Restor Dent 2007;19:30-6. https://doi.org/10.1111/j.1708-8240.2006.00060.x
  5. Akkayan B, Gulmez T. Resistance to fracture of endodontically treated teeth restored with different post systems. J Prosthet Dent 2002;87:431-7. https://doi.org/10.1067/mpr.2002.123227
  6. Medina Tirado JI, Nagy WW, Dhuru VB, Ziebert AJ. The effect of thermocycling on the fracture toughness and hardness of core buildup materials. J Prosthet Dent 2001;86:474-80. https://doi.org/10.1067/mpr.2001.120110
  7. Cho GC, Kaneko LM, Donovan TE, White SN. Diametral and compressive strength of dental core materials. J Prosthet Dent 1999;82:272-6. https://doi.org/10.1016/S0022-3913(99)70079-X
  8. Combe EC, Shaglouf AMS, Watts DC, Wilson NHF. Mechanical properties of direct resin core build-up materials. Dent Mater 1999;15:158-65. https://doi.org/10.1016/S0109-5641(99)00027-5
  9. Levartovsky S, Goldstein GR, Georgescu M. Shear bond strength of several new core materials. J Prosthet Dent 1996;75:154-8. https://doi.org/10.1016/S0022-3913(96)90092-X
  10. Yaman P, Thorsteinsson TS. Effect of core materials on the stress distribution of posts. J Prosthe Dent 1992;68:416-20. https://doi.org/10.1016/0022-3913(92)90403-W
  11. Oliva RA, Lowe JA. Dimensional stability of composite used as a core material. J Prosthet Dent 1986;56:554-61. https://doi.org/10.1016/0022-3913(86)90421-X
  12. Eiriksson SO, Pereira PN, Swift EJ Jr, Heymann HO, Sigurdsson A. Effects of saliva contamination on resin-resin bond strength. Dent Mater 2004;20:37-44. https://doi.org/10.1016/S0109-5641(03)00066-6
  13. Sorensen JA, Engelman MJ. Effect of post adaptation on fracture resistance of endodontically treated teeth. J Prosthet Dent 1990;64:419-24. https://doi.org/10.1016/0022-3913(90)90037-D
  14. Libman WJ, Nichollas JI. Load fatigue of teeth restored with cast posts and cores and completes crowns. Int J Prosthodont 1995; 8:155-61.
  15. Ng CC, Dumbrigue HB, Al-Bayat MI, Griggs JA, Wakefield CW. Influence of remaining coronal tooth structure location on the fracture resistance of restored endodontically treated anterior teeth. J Prosthet Dent 2006;95:290-6. https://doi.org/10.1016/j.prosdent.2006.02.026

Cited by

  1. Influence of masticatory fatigue on the fracture resistance of the pulpless teeth restored with quartz-fiber post–core and crown vol.4, pp.4, 2012, https://doi.org/10.1038/ijos.2012.78
  2. Effect of restorative techniques on fracture resistance of endodontically treated premolars vol.03, pp.07, 2013, https://doi.org/10.4236/ojst.2013.37064
  3. The effect of post length and core material on root fracture with respect to different post materials vol.71, pp.5, 2013, https://doi.org/10.3109/00016357.2012.741706
  4. Effect of different composite core materials on fracture resistance of endodontically treated teeth restored with FRC posts vol.25, pp.2, 2017, https://doi.org/10.1590/1678-77572016-0306
  5. Metal Free Aesthetic Rehabilitation of Devitalized Incisors vol.1, pp.1, 2012, https://doi.org/10.15436/2379-1705.15.008
  6. A comparative evaluation of fracture resistance of endodontically treated premolar teeth reinforced with different prefabricated and custom-made fiber-reinforced post system with two different post le vol.22, pp.4, 2012, https://doi.org/10.4103/jcd.jcd_52_19
  7. Fracture Resistance of Endodontically Treated Teeth Restored with Fiber Posts Luted with Composite Core Materials vol.21, pp.4, 2012, https://doi.org/10.5005/jp-journals-10024-2814