European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
March 2007
Print ISSN:
0965-7452
Vol:
15
Issue:
1

Fracture Resistance of Roots with Thin Walls Restored Using an Intermediate Resin Composite Layer Placed Between the Dentine and a Cast Metal Post

Abstract - Thin-walled roots restored using conventional cast metal post-cores are at risk of fracture. Placing a thick intermediate layer of resin-based composite (RBC), sandwiched between the root dentine and a small-diameter metal post or dowel, may improve the fracture resistance of such roots. In this initial laboratory study, two similar groups each of six decoronated maxillary central incisor teeth were prepared with approximately 1.0 mm thick tapered root canal walls. Cast metal alloy post-cores and metal-ceramic crowns were fabricated and cemented for one group with, and for the other control group without, a thick intermediate layer of RBC. The mean force (N) to fracture the roots was 639.3 (SD 51.6) for the intermediate layer of RBC group and 360.8 (42.9) for the control group, P <0.0001. These significantly different findings require clinical confirmation.

KEY WORDS: Root canal, Resin composite, Tooth fracture

Article Price
£15.00
Institution Article Price
£
Page Start
19
Page End
22
Authors
Bernard M-H. Liang, Ya-Ming Chen, Xin Wu, Kevin H-K.Yip, Roger J. Smales

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Long-term Survival of Direct and Indirect Restorations Placed for the Treatment of Advanced Tooth Wear
  2. 2
  3. 6

  1. Breakaway Forces of Flat and Domed Surfaced Magfittm Implant Magnet Attachments
  2. 7
  3. 12

  1. The Abrasion of Dental Composite by CobaltChromium Clasps
  2. 13
  3. 18

  1. Fracture Resistance of Roots with Thin Walls Restored Using an Intermediate Resin Composite Layer Placed Between the Dentine and a Cast Metal Post
  2. 19
  3. 22

  1. The Effect of a Range of Disinfectants on the Dimensional Accuracy and Stability of Some Impression Materials
  2. 23
  3. 28

  1. Mathematical Analysis of Occlusal Rest Design for Cast Removable Partial Dentures
  2. 29
  3. 32

  1. Analytical and Electrochemical Evaluation of the in vitro corrosion behavior of Nickel-chrome and Cobaltchrome casting alloys for metal-ceramic restorations.
  2. 33
  3. 40

  1. Apexification with Mineral Trioxide Aggregate: an overview of the material and technique
  2. 41
  3. 45