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Comparison Of Flexural Strength, Fracture Toughness, And Color Stability Of Cad/Cam 3d-Printed Denture Base Materials To Milled And Conventional Heat-Polymerized Materials: An In Vitro Study, Yamen Safadi
All ETDs from UAB
Digitalization of the design and manufacturing of complete dentures streamlines the clinical and laboratory processes and provides increased efficiency and enhanced denture quality.[1, 2] The two most common CAD/CAM techniques for denture base manufacturing are additive (3D-printing) and subtractive (milling) manufacturing. Milled denture bases have been proven to be comparable in their physical and mechanical properties to conventional heat-polymerized denture bases,[3-6] and in many studies found to be superior to 3D-printed denture bases.[7-13] However, 3D-printing offers many advantages over milling that appeal to both clinicians and dental technicians related to investment and operational costs, maintenance, speed of manufacturing, diversity of …
Retention Of Resin Composite Cam Crowns Following Different Bonding Protocols, Amir Hossein Nejat
Retention Of Resin Composite Cam Crowns Following Different Bonding Protocols, Amir Hossein Nejat
All ETDs from UAB
Objectives: Resin composite CAM materials offer more efficient milling, however, there is a high incidence of clinical debonding when this material is used for full-coverage crowns. The aim of the present study is to evaluate the effect of different surface treat-ments and primers on the crown retention of a new resin composite CAM material. Methods: 120 molars were prepared with a 24 degree taper, 1.5mm height, and axial walls in dentin. Surface area was measured by digital microscopy and preparations were scanned with an intraoral scanner. Crowns were milled from an experimental com-posite material with 4mm occlusal height. Teeth were …
Retention Of Cad/Cam Crowns Luted With A Novel Biomimetic Cement, Nan Xiang
Retention Of Cad/Cam Crowns Luted With A Novel Biomimetic Cement, Nan Xiang
All ETDs from UAB
Objectives: To measure the tensile strength of e.max copings cemented with resin, calcium silicate and calcium phosphate cements following thermocycling. Methods: 40 extracted non-carious mandibular premolar teeth were examined and selected using Keyence microscope for no carious cracks etc.were mounted in acrylic. The teeth were placed in a lathe and prepared to uniform dimensions (22° total taper) using a flat-end tapered diamond bur (846.11.025HP, Brasseler) and a 3mm preparation height. The surface area of the prepared surface was calculated with digital microscopy. The teeth were scanned with a Cerec 3 (Sirona) digital scanner. E.max crowns were milled using Cerec 3 …
Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi, Shruti Sushilkumar Sonavane
Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi, Shruti Sushilkumar Sonavane
All ETDs from UAB
Objectives: To measure retention of lithium disilicate (IPS e.max CAD, Ivoclar Viva-dent) and zirconia reinforced lithium disilicate (CELTRATM DUO, Dentsply) copings luted using resin cements and resin-modified glass ionomer cement. Methods: 110 Extracted human, non-carious mandibular 2nd premolars (n=10) were embedded in PVC cylinders with acrylic resin and placed into a lathe to produce a uni-form crown preparation (22°-convergence & 3mm-height). Following the orientation groove placement (69L bur), preparations were scanned and milled using a CEREC 3D/Sirona machine to produce e.max and CELTRATM DUO crowns. Preparations were imaged with a digital microscope (Keyence/VHX-600-20X) and the surface area of each crown …
Influence Of Surface Treatment Of Y-Tzp And Luting Cements On Retention Of Y-Tzp Crown, Mehdi Karimipour-Saryazdi
Influence Of Surface Treatment Of Y-Tzp And Luting Cements On Retention Of Y-Tzp Crown, Mehdi Karimipour-Saryazdi
All ETDs from UAB
Clinicians for a single tooth restoration, due to improved esthetics, often select all ceramic crowns. Zirconium Oxide has been utilized for many years to full fill the requirement of esthetics, high mechanical properties and biocompatibility. The purpose of this study is to evaluate the effect of different surface treatments and luting agents on retention of a zirconium oxide crown. Material and Methods: Ninety extracted teeth were obtained. Teeth were mounted in Ortho JetTM resin (Lang Dental Manufacturing Co., Inc. IL, USA). Occlusal surface was cut flat using Isomet (Buhler Ltd). Diamond burs were used to cut axial walls under water …