Effect of placement of calcium sulphate when used for the repair of furcation perforations on the seal produced by a resin-based material.
Int Endod J
; 40(2): 100-5, 2007 Feb.
Article
em En
| MEDLINE
| ID: mdl-17229114
ABSTRACT
AIM:
To evaluate the sealing ability of calcium sulphate when used under composite resin for the repair of furcation perforations having different diameters.METHODOLOGY:
Perforations of different diameter were created in the floors of pulp chambers in 60 extracted human molar teeth with either a number 3 (1 mm diameter) or 5 (1.5 mm diameter) round bur. The specimens of each group were divided into four sub-groups which were repaired with composite resin either alone or in combination with calcium sulphate that created an artificial floor (15 teeth group(-1)). Eight teeth without furcation perforations served as negative controls. In the leakage detection device, 1 mol L(-1) glucose solution was forced under a pressure of 1.5 KPa from the crown towards the pulp chamber floor. The concentration of leaked glucose was measured at 1, 2, 4, 7, 10, 15 and 20 days using a glucose oxidase method and the data evaluated using the rank sum test.RESULTS:
The specimens with larger perforations repaired with composite resin alone had significantly more leakage (P < 0.05). Using calcium sulphate as an artificial floor significantly decreased leakage of smaller perforations (P < 0.05). In groups repaired with calcium sulphate under composite resin, leakage in smaller perforations was markedly lower than that in larger ones (P < 0.05). No significant difference was found between the specimens with 1 or 1.5 mm perforations repaired with resin alone (P > 0.05).CONCLUSIONS:
Calcium sulphate significantly improved the sealing ability of 1 mm perforations repaired with composite resin but not for 1.5 mm perforations.
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Base de dados:
MEDLINE
Assunto principal:
Raiz Dentária
/
Sulfato de Cálcio
/
Traumatismos Dentários
/
Resinas Compostas
/
Infiltração Dentária
/
Materiais Dentários
/
Cavidade Pulpar
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article