Abstract
ObjectivesTricalcium silicate is the major constituent phase in mineral trioxide aggregate (MTA). It is thus postulated that pure tricalcium silicate can replace the Portland cement component of MTA. The aim of this study was to evaluate bond strength of methacrylate-based (MB) composites, silorane-based (SB) composites, and glass ionomer cement (GIC) to Biodentine® and mineral trioxide aggregate (MTA). Material and MethodsAcrylic blocks (n=90, 2 mm high, 5 mm diameter central hole) were prepared. In 45 of the samples, the holes were fully filled with Biodentine® and in the other 45 samples, the holes were fully filled with MTA. The Biodentine® and the MTA samples were randomly divided into 3 subgroups of 15 specimens each: Group-1: MB composite; Group-2: SB composite; and Group-3: GIC. For the shear bond strength (SBS) test, each block was secured in a universal testing machine. ResultsThe highest (17.7±6.2 MPa) and the lowest (5.8±3.2 MPa) bond strength values were recorded for the MB composite-Biodentine® and the GIC-MTA, respectively. Although the MB composite showed significantly higher bond strength to Biodentine (17.7±6.2) than it did to MTA (8.9±5.7) (p<0.001), the SB composite (SB and MTA=7.4±3.3; SB and Biodentine®=8.0±3,6) and GIC (GIC and MTA=5.8±3.2; GIC and Biodentine=6.7±2.6) showed similar bond strength performance with MTA compared with Biodentine (p=0.73 and p=0.38, respectively). ConclusionsThe new pure tricalcium-based pulp capping, repair, and endodontic material showed higher shear bond scores compared to MTA when used with the MB composite.
Highlights
Calcium silicate-based dental material, known DV PLQHUDO WULR[LGH DJJUHJDWH 07$ ZDV ¿UVW GHVFULEHG LQ WKH GHQWDO VFLHQWL¿F OLWHUDWXUH LQ 19, and received US Food and Drug Administration approval for endodontic use in 199821
The highest (17.7 MPa) and the lowest (5.3 MPa) bond strength values were recorded for the MB composite-Biodentine® and the glass ionomer cement (GIC)-mineral trioxide aggregate (MTA), respectively
$OWKRXJK WKH 0% FRPSRVLWH VKRZHG VLJQL¿FDQWO\ higher bond strength to Biodentine® than it did to MTA (p
Summary
Calcium silicate-based dental material, known DV PLQHUDO WULR[LGH DJJUHJDWH 07$ ZDV ¿UVW GHVFULEHG LQ WKH GHQWDO VFLHQWL¿F OLWHUDWXUH LQ 19, and received US Food and Drug Administration approval for endodontic use in 199821. MTA has gained great popularity, especially in endodontic and pediatric dentistry, because it possesses improved physical and regenerative characteristics: it supports cementum regrowth, has low solubility after setting, can set in a wet environment, facilitates the control of bleeding, provides a strong barrier for bacterial leakage, and can induce mineralized tissue formation. MTA has gained great popularity, especially in endodontic and pediatric dentistry, because it possesses improved physical and regenerative characteristics: it supports cementum regrowth, has low solubility after setting, can set in a wet environment, facilitates the control of bleeding, provides a strong barrier for bacterial leakage, and can induce mineralized tissue formation8 These advanced properties mean that MTA is one of the most successfully used materials in clinical procedures, especially endodontic and surgical applications, including direct pulp capping, DSH[L¿FDWLRQ UHJHQHUDWLYH HQGRGRQWLF WUHDWPHQW (apexogenesis), pulpotomy, and the sealing of SHUIRUDWLRQV ,W FDQ DOVR EH XVHG DV D URRWHQG ¿OOLQJ material after root-end resection. Despite its unique combination of favorable properties, MTA has some critical shortcomings, namely the prolonged setting time, the high solubility during the setting time, the potential for GLVFRORUDWLRQ DQG GLI¿FXOWO\ LQ KDQGOLQJ4
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