Document Detail

Apical canal sealing ability of calcium phosphate based cements.
MedLine Citation:
PMID:  9485764     Owner:  NLM     Status:  MEDLINE    
The apical canal sealing ability of newly developed calcium phosphate cement (TDM-C), an equimolar mixture of tetracalcium and dicalcium phosphate dihydrate kneaded with McIlvain's buffer solution containing sodium carboxymethyl cellulose, was evaluated in a relative comparison with several recognized available products. The latter included BONETRIX (alpha-tricalcium phosphate mixed with citric acid and tannic acid), ARS (alpha-tricalcium phosphate and hydroxyapatite mixed with polyacrylic acid), and zine oxide eugenol sealer (ZOE). Canals of forty extracted human maxillary central incisors were prepared to the file size #70, divided into four groups, and obturated with each of the four above materials. Setting of all sealers took place either in 30% bovine serum solution or in phosphate buffered saline solution. Teeth were then decalcified and cleared to measure linear penetration of India ink from the apex into the canal. Results were statistically analyzed by Student's t-test. Surfaces of all materials, after setting, were also observed by scanning electron microscopy (SEM). We found that TDM-C, BONETRIX, and ZOE all showed excellent apical sealing ability whereas ARS was less effective in this regard. SEM analysis revealed micropores on the surface of every apatitic product, but ZOE was free of such porosity. It was concluded that TDM-C and BONETRIX may prove clinically useful as root canal sealant materials.
M Yoshikawa; T Inamoto; T Hakata; T Toda
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Publication Detail:
Type:  Comparative Study; In Vitro; Journal Article    
Journal Detail:
Title:  Journal of Osaka Dental University     Volume:  30     ISSN:  0475-2058     ISO Abbreviation:  J Osaka Dent Univ     Publication Date:  1996 Dec 
Date Detail:
Created Date:  1998-03-24     Completed Date:  1998-03-24     Revised Date:  2013-04-05    
Medline Journal Info:
Nlm Unique ID:  7507225     Medline TA:  J Osaka Dent Univ     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  1-6     Citation Subset:  D    
Department of Endodontics, Osaka Dental University, Japan.
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MeSH Terms
Calcium Phosphates / chemistry,  pharmacology*
Dental Cements / chemistry,  pharmacology*
Dental Leakage / prevention & control
Dental Pulp Cavity / drug effects*
Microscopy, Electron, Scanning
Random Allocation
Root Canal Filling Materials / chemistry,  pharmacology*
Surface Properties
Tooth Apex / drug effects*
Reg. No./Substance:
0/Calcium Phosphates; 0/Dental Cements; 0/Root Canal Filling Materials; 0/alpha-tricalcium phosphate; 0/monocalcium phosphate; 0/tetracalcium phosphate; 97Z1WI3NDX/calcium phosphate; L11K75P92J/dicalcium phosphate anhydrous

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