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Full-Text Articles in Dentistry
Effects Of Light Curing Bonding Agent With Dual Cure Cement On The Retention Of Zirconia And Lithium Disilicate Crowns: An In-Vitro Study., Mariam Issa
All ETDs from UAB
Objective: To measure and compare the bond strength of zirconia and lithium disilicate crowns bonded to human teeth (enamel and dentin) using universal adhesive with resin cement and different light curing protocols.Methods: Sixty extracted sound non carious human teeth (second premolars) were stored in formalternate solution (FormalternateTM, Concentrate, 500 mL, Canada) and the roots were notched and mounted into acrylic resin (Yates Motloid, USA). Flat surface preparation was done on the occlusal surface of the samples using model trimmer. The surface area of the specimens was measured with digital light microscopy. Samples were randomly divided into six groups of 10 …
Comparison Of Crown Fracture And Wear Resistence Of Resin 3d Printed Permanent Crown And Other Restorative Materials, Victor Moncada
Comparison Of Crown Fracture And Wear Resistence Of Resin 3d Printed Permanent Crown And Other Restorative Materials, Victor Moncada
All ETDs from UAB
Statement of Problem: The resin for 3D printing permanent crowns is a recently approved material with limited literature evidence to support its in vitro properties. Comparing the mechanical properties such as fracture load (N) and wear resistance for 3D printing permanent restorations resins would represent a very good reference to consider future clinical decisions. Purpose: To investigate the fracture load (N) and wear resistance of the resins for 3D printing permanent crowns available in the U.S. dental market and to compare amongst them using lithium disilicate as a reference. Materials and Methods: for the crown fracture test, the experimental design …
Effect Of Different Supporting Die Materials And Crown Thicknesses On The Fracture Load Of Monolithic 3y-Tzp Zirconia And Lithium Disilicate Crowns, Akram Mohamed Mohamed Gad Sayed Ahmed
Effect Of Different Supporting Die Materials And Crown Thicknesses On The Fracture Load Of Monolithic 3y-Tzp Zirconia And Lithium Disilicate Crowns, Akram Mohamed Mohamed Gad Sayed Ahmed
All ETDs from UAB
Background: Conventionally, the strength of dental materials used for fixed restorations is measured using specimens of simplified geometry (i.e bars or discs). There is value in measuring the strength of these materials in their anatomic geometry (i.e crowns) under clinically relevant loading conditions. One advantage of performing the so-called crown fracture test is that the material may benefit from its ability to be strengthened by its bond to a tooth-mimicking die. When performing a crown fracture test, the ideal die material is natural tooth structure. However, the variability in natural tooth anatomy and microstructure makes the use of a standardized, …
Measuement Of Translucency, Biaxial Flexural Strength, And Radiopacity Of Different Lithium Disilicate Materials, Preshtha Mangla
Measuement Of Translucency, Biaxial Flexural Strength, And Radiopacity Of Different Lithium Disilicate Materials, Preshtha Mangla
All ETDs from UAB
Objective: To measure translucency parameter, biaxial flexural strength, radiopacity and microstructure of various lithium disilicate materials used for dental restorations. Materials and Methods: CAD/CAM lithium disilicate glass-ceramic blocks: IPS e.max CAD (Ivoclar Vivadent), CerecTessera (Dentsply Sirona), and Amber Mill (Hassbio America) were used (shade A2, HT, and MT). Blocks of each material were milled (PrograMill PM7, Ivoclar Vivadent) into cylinders (diameter = 14 mm) and cut using circular sectioning saw (IsoMET 1000 Precision Saw, Buehler) into disc-shaped specimens (thickness = 1.00 ± 0.05 mm) (n=5/group). They were hand polished to 1200 grit with SiC paper under water lubrication. The translucency …