چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| Aim: Adhesion of composite resin and pulp capping biomaterialsremarkably influences treatment outcomes. This in vitro studyaimed to compare the shear bond strength of composite resinto calcium enriched mixture (CEM) cement, mineral trioxideaggregate (MTA) and resin modified glass ionomer (RMGI) withor without acid etching.Materials and methods: A total of 90 cylindrical acrylic blockscontaining a central hole, measuring 4 mm diameter and 2 mmheight were prepared. The blocks were randomly divided intothree experimental groups based on being filled with CEM, MTAor RMGI. Samples in each group were then randomly dividedinto two subgroups, i.e. with or without phosphoric acid etching.Placing composite resin cylinders on the samples, shear bondstrengths were measured using a universal testing machine.Failure modes of the samples were evaluated under astereomicroscope. Data were analyzed using two-way ANOVAand Tukey tests.Results: Shear bond strengths in the etched and nonetchedsamples were not significantly different (p = 0.60). There was asignificant difference in shear bond strength values of the threeexperimental materials (p < 0.001) and RMGI showed thehighest strength values (p < 0.001); no significant differencewas observed between MTA and CEM (p = 0.51). The interactionof the type of material and surface etching was statisticallysignificant (p < 0.001). All of the samples showed cohesive failuremode.Conclusion: Acid etching of MTA, CEM and RMGI do notimprove the shear bond strength of these materials to compositeresin. Besides, shear bond strength values of MTA and CEM tocomposite resin, are favorable due to their cohesive mode offailure.Clinical significance: When MTA and CEM biomaterials areused in vital pulp therapy, it is advisable to cover these materialswith RMGI. In addition, if it is not possible to use RMGI, thesurface etching of MTA and CEM biomaterials is not necessaryprior to composite restoration using total-etch adhesive resin. |
| نویسنده | نفر چندم مقاله |
|---|---|
| محمود بهاری | سوم |
| سیاوش سوادی اسکویی | اول |
| سودابه کیمیائی | دوم |
| پریا مطهری | چهارم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| b7d2f10cdc7da92c25b193f1955fa5a4f8c2-2.pdf | 1398/07/22 | 394529 | دانلود |
