PMID- 29288401
OWN - NLM
STAT- MEDLINE
DCOM- 20181116
LR  - 20181116
IS  - 1436-3771 (Electronic)
IS  - 1432-6981 (Linking)
VI  - 22
IP  - 4
DP  - 2018 May
TI  - X-ray diffraction analysis of MTA mixed and placed with various techniques.
PG  - 1675-1680
LID - 10.1007/s00784-017-2241-9 [doi]
AB  - OBJECTIVES: The aim of this study was to evaluate the effect of various mixing 
      techniques as well as the effect of ultrasonic placement on hydration of mineral 
      trioxide aggregate (MTA) using X-ray diffraction (XRD) analysis. MATERIALS AND 
      METHODS: One gram of ProRoot MTA and MTA Angelus powder was mixed with a 0.34-g 
      of distilled water. Specimens were mixed either by mechanical mixing of capsules 
      for 30 s at 4500 rpm or by manual mixing followed by application of a compaction 
      pressure of 3.22 MPa for 1 min. The mixtures were transferred into the XRD sample 
      holder with minimum pressure. Indirect ultrasonic activation was applied to half 
      of the specimens. All specimens were incubated at 37  degrees C and 100% humidity for 
      4 days. Samples were analyzed by XRD. Phase identification was accomplished by 
      use of search-match software utilizing International Centre for Diffraction Data 
      (ICDD). RESULTS: All specimens comprised tricalcium silicate, calcium carbonate, 
      and bismuth oxide. A calcium hydroxide phase was formed in all ProRoot specimens 
      whereas among MTA Angelus groups, it was found only in the sample mixed 
      mechanically and placed by ultrasonication. CONCLUSIONS: Mechanical mixing 
      followed by ultrasonication did not confer a significant disadvantage in terms of 
      hydration characteristics of MTA. CLINICAL RELEVANCE: Clinicians vary in the way 
      they mix and place MTA. These variations might affect their physical 
      characteristics and clinical performance. For ProRoot MTA, the mixing and 
      placement methods did not affect its rheological properties, whereas for MTA 
      Angelus, mechanical mixing combined with ultrasonic placement enhanced the 
      calcium hydroxide phase formation.
FAU - Basturk, F B
AU  - Basturk FB
AD  - Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul, 
      Turkey.
AD  - School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, 
      Cardiff, UK.
FAU - Nekoofar, Mohammad Hossein
AU  - Nekoofar MH
AD  - School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, 
      Cardiff, UK. nekoofar@tums.ac.ir.
AD  - Department of Endodontics, School of Dentistry, Tehran University of Medical 
      Sciences, Tehran, Iran. nekoofar@tums.ac.ir.
FAU - Gunday, M
AU  - Gunday M
AD  - Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul, 
      Turkey.
FAU - Dummer, P M H
AU  - Dummer PMH
AD  - School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, 
      Cardiff, UK.
LA  - eng
PT  - Journal Article
DEP - 20171229
PL  - Germany
TA  - Clin Oral Investig
JT  - Clinical oral investigations
JID - 9707115
RN  - 0 (Aluminum Compounds)
RN  - 0 (Calcium Compounds)
RN  - 0 (Drug Combinations)
RN  - 0 (Oxides)
RN  - 0 (Root Canal Filling Materials)
RN  - 0 (Silicates)
RN  - 0 (mineral trioxide aggregate)
MH  - Aluminum Compounds/*chemistry
MH  - Calcium Compounds/*chemistry
MH  - Drug Combinations
MH  - Materials Testing
MH  - Oxides/*chemistry
MH  - Root Canal Filling Materials/*chemistry
MH  - Silicates/*chemistry
MH  - Surface Properties
MH  - *Ultrasonics
MH  - *X-Ray Diffraction
OTO - NOTNLM
OT  - Calcium hydroxide
OT  - MTA
OT  - Mechanical mixing
OT  - Ultrasonic agitation
OT  - X-ray diffraction analysis
OT  - XRD
EDAT- 2017/12/31 06:00
MHDA- 2018/11/18 06:00
CRDT- 2017/12/31 06:00
PHST- 2017/06/12 00:00 [received]
PHST- 2017/10/05 00:00 [accepted]
PHST- 2017/12/31 06:00 [pubmed]
PHST- 2018/11/18 06:00 [medline]
PHST- 2017/12/31 06:00 [entrez]
AID - 10.1007/s00784-017-2241-9 [pii]
AID - 10.1007/s00784-017-2241-9 [doi]
PST - ppublish
SO  - Clin Oral Investig. 2018 May;22(4):1675-1680. doi: 10.1007/s00784-017-2241-9. 
      Epub 2017 Dec 29.