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Displaying 176 - 200 of 246

Effect of Thermal Cycling on Whisker-Reinforced Dental Resin Composites

January 1, 2002
Author(s)
H H. Xu, F Eichmiller, Douglas T. Smith, Gary E. Schumacher, Anthony A. Giuseppetti, Joseph M. Antonucci
The mechanical properties of dental resin composites needs to be improved in order to extend their use to high stress-bearing applications such as crown and bridge restorations. Recent studies used single crystal ceramic whiskers to reinforce dental

Interfacial Shear Strengths of Dental Resin-Glass Fibers by the Microbond Test

November 1, 2001
Author(s)
Walter G. McDonough, Joseph M. Antonucci, Joy Dunkers
In this study, the feasibility of using the microbond test (MBT) to probe the durability of the bond between a dental resin with differently silanized E-glass fibers was investigated. The E-glass fibers were silanized with equivalent amounts of two types

Dental Resin Composites Containing Silica-Fused Whiskers: Effects of Whisker-to-Silica Ratio on Fracture Toughness and Indentation Properties

April 1, 2001
Author(s)
Hockin D. Xu, Janet Quinn, Douglas T. Smith, Joseph M. Antonucci, Gary E. Schumacher, F Eichmiller
Dental resin composites need to be strengthened in order to improve their performance in large stress-bearing applications such as crowns and multiple-unit restorations. Recently, silica-fused ceramic whiskers were used to reinforce dental composites, and

Mass Spectrometry of Spin-On-Glass Low-K Dielectric Precursors

April 1, 2001
Author(s)
William E. Wallace, Kathleen M. Flynn, Joseph M. Antonucci
The degree-of-intramolecular-condensation, defined as the number of residual silanol (SiOH) groups per oligomer, for a variety of silsesquioxane polymers was measured by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Reaction

A Novel Microshear Test to Measure Dental Adhesion

February 1, 2001
Author(s)
Joseph M. Antonucci, Walter G. McDonough, Gary E. Schumacher, Y Shimada
A key factor in determining the strength and durability of polymeric dental restorative composites, sealants and adhesives is the quality of their interfaces/interphases. Bulk mechanical strength tests such as tensile, transverse and shear tests are

Dental Resin Composites Containing Ceramic Whiskers and Precured Glass Ionomer Particles

September 1, 2000
Author(s)
H H. Xu, F Eichmiller, Joseph M. Antonucci, Gary E. Schumacher, L K. Ives
Objectives: Glass ionomer, resin-modified glass ionomer, and compomer materials are susceptible to brittle fracture and are inadequate for use in large stress-bearing posterior restorations. The aim of this study was to use ceramic single crystal whiskers