Pull-Out Test and the Effects of Using Different Types of Cements and Upgrading Systems in Endodontic Treated Teeth
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Abstract
BACKGROUND: Each dental upgrade, in order to meet the basic prosthetic principles, should enable long and reliable retention with the crown or the bridge, to achieve proper load transfer onto the root and surrounding supporting tissues.
AIM: From a total of used literature, emerged the goal of the research, to examine pull-out test in correlation with different types of cement used for different types upgraded systems placed on the endodontically treated teeth.
MATERIALS AND METHODS: The literature data on pull-out-test in this thesis is obtained by electronic search of Medline, PubMed Central, Research Gate, Google scholar, and other websites. Due to the lack of such kind of data in our country they are not taken into account. In the tests that were researched post systems were divided into groups and cemented with different types of cement (self-eroding and self-bonding resinous cement). All groups of posts were examined with pull-out test of extraction and tested with universal machine. The observation was conducted with stereo microscope.
RESULTS: The results of scientific research suggests that self-adhesive resin cements contribute to very good retention of the post in the root of the tooth, ignoring the thickness of the cement.
DISCUSSION: According to the literary knowledge in the in vitro studies for pull-out test indicates the adhesion of fiber posts with the self-eroding and self-bonding resinous cement. Clinical relevance of this test is based on the fact that the debonding is the most common possible error in application of fiber posts. As a consequence the axial charge would be considered as dominant in clinical restorations. In other studies, it appears that the resinous cement has a significant impact on the strength of the pull out connection and the used posts. Analyzing other literary knowledge of the adhesion characteristics of the tested cements also knowing that it depends on the ability of self-bonding phosphoric acid methacrylate monomers which make its matrix. Certain data shows it was the compatibility of resin cements surface of the post can contribute to better retention of the post in the root of the tooth.
CONCLUSIONS: As a part of this, and several of these in vitro studies, concludes that tested self-adhesive resin cements can contribute to better retention of the post in the root of the tooth, regardless of the thickness of the layers of cement. Corresponding with different authors and their knowledge, an interesting conclusion came up that gives the best results for RelyX Unicem cement. Another conclusion of everyday practice, is that the diameter of the posts used in certain moments can be ignored, but when using the appropriate cement.Downloads
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