Dynamic sealing ability of MTA root canal sealer.
Int Endod J
; 44(1): 9-20, 2011 Jan.
Article
en En
| MEDLINE
| ID: mdl-20646079
ABSTRACT
AIMS:
To evaluate (i) the sealing ability of two sealers, mineral trioxide aggregate sealer (MTAS) and Pulp Canal Sealer (PCS), used with gutta-percha utilizing the fluid filtration method, (ii) leaching and surface characteristics in Hank's balanced salt solution (HBSS) over a period of time.METHODOLOGY:
Surface characteristics in HBSS were evaluated under the scanning electron microscope after 1 and 28 days, and the leaching of both sealers were assessed by inductively coupled plasma atomic absorption spectrometry (ICP-AAS). In addition, 24 single rooted extracted teeth were root filled using warm vertical compaction with either MTAS or PCS used as sealers with gutta-percha. Four teeth were used as positive and negative controls. Sealing ability was evaluated after 1 or 28 days using the fluid filtration method.RESULTS:
Mineral trioxide aggregate sealer exhibited crystalline deposits rich in calcium and phosphorus on its surface when in contact with a physiological solution. These crystalline deposits were absent in PCS and on MTAS stored at 100% humidity. The sealing ability of MTAS was similar to that of PCS.CONCLUSIONS:
The novel sealer based on mineral trioxide aggregate had comparable sealing ability to a proprietary brand sealer cement. In contact with a simulated body fluid, the MTA sealer released calcium ions in solution that encouraged the deposition of calcium phosphate crystals.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Materiales de Obturación del Conducto Radicular
/
Obturación del Conducto Radicular
/
Filtración Dental
Tipo de estudio:
Evaluation_studies
Límite:
Humans
Idioma:
En
Revista:
Int Endod J
Año:
2011
Tipo del documento:
Article
País de afiliación:
Italia