PMID- 22552928
OWN - NLM
STAT- MEDLINE
DCOM- 20130517
LR  - 20170505
IS  - 1932-8745 (Electronic)
IS  - 0161-0457 (Linking)
VI  - 34
IP  - 6
DP  - 2012 Nov-Dec
TI  - Comparison of the microhardness and morphology of five different retrograde 
      filling materials in aqueous and dry conditions.
PG  - 359-66
LID - 10.1002/sca.21018 [doi]
AB  - The purpose of the present study was to compare the effect of dry and aqueous 
      conditions on the surface morphology and surface hardness of five materials 24 h 
      after being used as fillings without initial setting time in dry condition. The 
      five materials were ProRoot mineral trioxide aggregate (MTA), super EBA, 
      intermediate restorative materials (IRM), zinc oxide eugenol (ZOE), and amalgam. 
      To evaluate microhardness, the five materials were submitted to the Vickers 
      microhardness (VHN) test. We used a scanning electron microscope (Steroscan 440, 
      Leica Cambridge, England) to observe the microstructural morphology of the five 
      different materials. The VHN of MTA soaked in water showed five times lower than 
      that of MTA soaked in dry condition. On the other hand, super EBA was less 
      influenced by the medium of storage compared with the other materials. Scanning 
      electron microscope (SEM) images showed the similar results with microhardness 
      tests. The surface of MTA soaked in water appeared to be unstable compared with 
      that of dry condition while super EBA showed similarly smooth surface in both 
      conditions (aqueous and dry). In conclusion, the physical property of MTA is 
      reduced after storage in water; however, super EBA is less influenced by aqueous 
      condition.
CI  - (c) Wiley Periodicals, Inc.
FAU - Rhim, E M
AU  - Rhim EM
AD  - Department of Conservative Dentistry, The Catholic University of Korea, St. 
      Paul's Hospital, Seoul, Korea.
FAU - Huh, S Y
AU  - Huh SY
FAU - Ahn, S J
AU  - Ahn SJ
FAU - Abbott, P V
AU  - Abbott PV
FAU - Kim, E C
AU  - Kim EC
FAU - Park, S H
AU  - Park SH
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120502
PL  - England
TA  - Scanning
JT  - Scanning
JID - 7903371
RN  - 0 (Root Canal Filling Materials)
SB  - IM
MH  - *Hardness
MH  - Hardness Tests
MH  - Humans
MH  - Microscopy, Electron, Scanning
MH  - Root Canal Filling Materials/*chemistry
MH  - Surface Properties
EDAT- 2012/05/04 06:00
MHDA- 2013/05/18 06:00
CRDT- 2012/05/04 06:00
PHST- 2011/12/08 00:00 [received]
PHST- 2012/01/07 00:00 [accepted]
PHST- 2012/05/04 06:00 [entrez]
PHST- 2012/05/04 06:00 [pubmed]
PHST- 2013/05/18 06:00 [medline]
AID - 10.1002/sca.21018 [doi]
PST - ppublish
SO  - Scanning. 2012 Nov-Dec;34(6):359-66. doi: 10.1002/sca.21018. Epub 2012 May 2.