Evaluation of the marginal fit of metal copings fabricated on three different marginal designs using conventional and accelerated casting techniques: An in vitro study.
Artículo
en Inglés
| IMSEAR
| ID: sea-154679
ABSTRACT
Introduction:
Abundant resources and techniques have been used for complete coverage crown fabrication. Conventional investing and casting procedures for phosphate-bonded investments require a 2- to 4-h procedure before completion. Accelerated casting techniques have been used, but may not result in castings with matching marginal accuracy. Aims andObjectives:
The study measured the marginal gap and determined the clinical acceptability of single cast copings invested in a phosphate-bonded investment with the use of conventional and accelerated methods. Materials andMethods:
One hundred and twenty cast coping samples were fabricated using conventional and accelerated methods, with three finish lines Chamfer, shoulder and shoulder with bevel. Sixty copings were prepared with each technique. Each coping was examined with a stereomicroscope at four predetermined sites and measurements of marginal gaps were documented for each. StatisticalAnalysis:
A master chart was prepared for all the data and was analyzed using Statistical Package for the Social Sciences version. Evidence of marginal gap was then evaluated by t-test. Analysis of variance and Post-hoc analysis were used to compare two groups as well as to make comparisons between three subgroups .Results:
Measurements recorded showed no statistically significant difference between conventional and accelerated groups.Conclusion:
Among the three marginal designs studied, shoulder with bevel showed the best marginal fit with conventional as well as accelerated casting techniques. Accelerated casting technique could be a vital alternative to the time-consuming conventional casting technique. The marginal fit between the two casting techniques showed no statistical difference.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Técnicas In Vitro
/
Ensayo de Materiales
/
Técnica de Colado Dental
/
Aleaciones Dentales
Idioma:
Inglés
Año:
2014
Tipo del documento:
Artículo
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