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A comparison of fracture strength of posterior composite and ceramic inlay materials | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 21, Issue 2, 2009, Pages 18-22 | ||
| Authors | ||
| Wisam A. Najim; an R. Zakaria | ||
| Abstract | ||
| ABSTRACTBackground: Patient demands for nonmetallic restorations have increased for esthetic reasons in posterior teeth,especially due to the questionable biocompatibility of mercury-containing amalgam alloys. This study compared thefracture strength of four different posterior inlay materials.Materials and Methods: Four types of inlay material were tested (Herculite XRV™, Nulite F®, Fibrespan®, and In-Ceram®). The specimens were distributed into four groups, each group contained ten specimens. The fracturestrength was determined for each specimen, using a Computerized Materials Testing Machine (Testometric AX) bywhich mechanical loading on specimens was performed.Results: Under the circumstances of this study, it was obvious that the In-Ceram® group had the highest value offracture strength (524.4 MPa.), followed by Herculite™ Group (307.08 MPa.), Nulite F® Group (176.44MPa.), andFibrespan® Group which scored the lowest value (110.84 MPa.). A statistical analysis of the results using One-wayANOVA, and LSD tests revealed a highly significant level of difference between each of the four groups.Conclusions. All systems showed sufficient fracture strength to be used clinically for posterior inlay fabrication.Keywords: Fracture strength, Inlay materials. J Bagh Coll Dentistry 2009; 21(2):18-22) | ||
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