PMID- 16376983
OWN - NLM
STAT- MEDLINE
DCOM- 20070110
LR  - 20061106
IS  - 0109-5641 (Print)
IS  - 0109-5641 (Linking)
VI  - 22
IP  - 12
DP  - 2006 Dec
TI  - Effect of pontic height on the fracture strength of reinforced interim fixed 
      partial dentures.
PG  - 1093-7
AB  - OBJECTIVES: This in vitro study evaluated the fracture load of interim FPDs made 
      with various materials and pontic heights. The hypothesis was that different 
      materials and pontic heights result in different fracture resistance. METHODS: 
      Groups of interim FPDs were fabricated with prosthodontic resin materials on two 
      abutments with two different pontic heights (4.3 and 5.8 mm) and a pontic width 
      of 4 units (19 mm) (n = 3). The following materials were tested: (1) a 
      thermoplastic polymer (Promysan Star), (2) Promysan Star with a veneering 
      composite (Vita Zeta), (3) a non-impregnated polyethylene fiber reinforced resin 
      (Ribbond) with a veneering composite (Sinfony), (4) an impregnated fiber 
      reinforced composite system (Targis/Vectris), and (5) a conventional poly methyl 
      methacrylate (PMMA) (Biodent K+B, control group). After 5000 thermocycles, the 
      FPDs were temporarily fixed with a provisional cement on the corresponding 
      abutments and tested for fracture strength. One-way and two-way ANOVA and 
      Bonferroni-Dunn's multiple comparison tests were performed for the statistical 
      analysis (alpha = 0.05). RESULTS: The mean fracture strength ranged from 83.0 to 
      625.9 N for a pontic height of 4.3 mm and from 97.2 to 893.7 N for a pontic 
      height of 5.8 mm. Vectris/Targis FPDs of both pontic heights exhibited 
      significantly superior fracture resistance compared to the corresponding 
      Promysan, Promysan/Vita Zeta, Ribbond/Sinfony and Biodent groups. Except Biodent 
      FPDs, fracture resistance of FPDs with a pontic height of 4.3 mm showed no 
      significant differences compared to a pontic height of 5.8 mm for each material. 
      SIGNIFICANCE: Material type of the FPDs has a significant influence on the 
      fracture strength, whereas pontic height has no significant effect (except 
      control group).
FAU - Pfeiffer, P
AU  - Pfeiffer P
AD  - Department of Prosthetic Dentistry, School of Oral Medicine, University of 
      Cologne, Cologne, Germany. peter.pfeiffer@uni-koeln.de
FAU - Grube, L
AU  - Grube L
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20060110
PL  - England
TA  - Dent Mater
JT  - Dental materials : official publication of the Academy of Dental Materials
JID - 8508040
RN  - 0 (Composite Resins)
RN  - 0 (Polyethylenes)
RN  - 0 (fiberglass)
MH  - Analysis of Variance
MH  - *Composite Resins
MH  - Dental Prosthesis Design
MH  - *Dental Restoration Failure
MH  - Dental Stress Analysis
MH  - *Denture, Partial, Fixed
MH  - *Denture, Partial, Temporary
MH  - Glass
MH  - Humans
MH  - Materials Testing
MH  - Polyethylenes
MH  - Statistics, Nonparametric
MH  - *Tooth, Artificial
EDAT- 2005/12/27 09:00
MHDA- 2007/01/11 09:00
CRDT- 2005/12/27 09:00
PHST- 2005/05/18 00:00 [received]
PHST- 2005/09/22 00:00 [accepted]
PHST- 2005/12/27 09:00 [pubmed]
PHST- 2007/01/11 09:00 [medline]
PHST- 2005/12/27 09:00 [entrez]
AID - S0109-5641(05)00329-5 [pii]
AID - 10.1016/j.dental.2005.09.003 [doi]
PST - ppublish
SO  - Dent Mater. 2006 Dec;22(12):1093-7. doi: 10.1016/j.dental.2005.09.003. Epub 2006 
      Jan 10.