Alava FM, Mena CN, Sandoval VF

Language: Spanish
References: 18
Page: 182-187
PDF size: 212.84 Kb.

ABSTRACT

A great number of fiber-glass post de-cementation cases after adhesion to root canal have been reported. The aim of the present study was to assess effectiveness of two disinfectant materials: 5.25% sodium hypochlorite (NaCIO), and 2% Chlohexidine used as irrigation agents before cementation of fiberglass posts (FGP) in the process of adhesion-cohesion, using dual cement (DC). Thirty teeth, endodontically treated with previously sectioned clinical crowns, were prepared to each receive a FGP. Samples were divided into three groups and different root canal irrigation techniques were used: 1. 5.25% NaCIO, 2. 2% Chlorhexidine, and 3. Water. Samples were transversely sectioned with diamond disc at the cervical third (CT) and at the middle third (MT), thus, 60 study samples were obtained. Observation and measurement of dual cement/dentin (DC/D) and dual cement/post (DC/P) were conducted with scanning electron microscope. These measurements were taken at MT and CT. Gaps present at the DC/D and DC/P on surfaces free of adhesion-cohesion were also measured. Data analysis revealed significant differences with respect to effectiveness with adhesion percentages in DC/D dentine when using 5.25% NaCIO technique versus 2% Chlorhexidine and water techniques. There was no observed signific­ant difference in mean adhesion percentages in CT and MT. 5.25% NaCIO irrigation technique proved to be the one causing less DC/D and DC/P interference. It showed higher adhesion percentage both in DC/D inter-phase and DC/P cohesion inter-phase.

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