PMID- 20396451
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20110714
LR  - 20211020
IS  - 1305-7464 (Electronic)
IS  - 1305-7456 (Print)
VI  - 4
IP  - 2
DP  - 2010 Apr
TI  - Effect of Energy Density on the Physical Properties of Resin-Based Restorative 
      Materials when Polymerized with Quartz-Tungsten Halogen or LED-Light.
PG  - 183-91
AB  - OBJECTIVES: The purpose of this study was to evaluate flexural strengths, moduli, 
      and maximum deflection of Clearfil AP-X (APX) and Ceram-X Mono (CXM) when cured 
      with a quartz-tungsten halogen (QTH) or an LED-light (LED). METHODS: Specimens 
      were made according to ISO 4049 and cured with QTH or LED for 10, 20 or 60s. 
      Flexural strength, modulus, and deflection were determined after 24 h water 
      storage at 37 degrees C and after thermocycling. Statistical significance was 
      P<.05. RESULTS: Flexural strength did not depend on energy density or curing 
      light and was significantly higher for APX than for CXM but decreased after 
      thermocycling for both materials. Modulus and deflection depended on energy 
      density. Modulus was significantly higher for APX than for CXM and increased for 
      APX but decreased for CXM after thermocycling. Deflection decreased with 
      increasing energy density and decreased after thermocycling. Though energy 
      density did not influence flexural strength, it positively correlated with 
      flexural modulus and negatively with maximum deflection. CONCLUSIONS: Energy 
      density did not influence flexural strength but modulus and deflection. 
      Thermocycling affected all material properties. The LED was as effective as the 
      QTH.
FAU - Ruttermann, Stefan
AU  - Ruttermann S
AD  - Heinrich-Heine-University, Medical Faculty, Centre of Dentistry, Dept. of 
      Operative and Preventive Dentistry and Endodontics, Dusseldorf, Germany.
FAU - Tomruk, Senay
AU  - Tomruk S
FAU - Raab, Wolfgang H M
AU  - Raab WH
FAU - Janda, Ralf
AU  - Janda R
LA  - eng
PT  - Journal Article
PL  - Germany
TA  - Eur J Dent
JT  - European journal of dentistry
JID - 101303672
PMC - PMC2853820
OTO - NOTNLM
OT  - Curing device
OT  - Curing time
OT  - LED
OT  - Mechanical properties
OT  - Resin-based filling material
EDAT- 2010/04/17 06:00
MHDA- 2010/04/17 06:01
PMCR- 2010/04/01
CRDT- 2010/04/17 06:00
PHST- 2010/04/17 06:00 [entrez]
PHST- 2010/04/17 06:00 [pubmed]
PHST- 2010/04/17 06:01 [medline]
PHST- 2010/04/01 00:00 [pmc-release]
AID - dent04_p0183 [pii]
PST - ppublish
SO  - Eur J Dent. 2010 Apr;4(2):183-91.