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Displaying 101 - 125 of 246

Synthesis and Characterization of Methacrylate Derivatives of Oligo-Ether Carbonate Diols

April 1, 2005

Author(s)

S Bencherif, K S. Wilson, Elizabeth Wilder, Joseph M. Antonucci

Dimethacrylate monomers of several types are widely used in preventative and restorative dental applications. One such monomer that ushered in the modern era of polymeric based dental materials is 2,2-bis[p-(2'-hydroxy-3'-methacryloxyoxypropoxy)phenyl]

Amorphous Calcium Phosphate Based Polymeric Composites: Effects of Polymer Composition and Filler's Particle Size on Composite Properties

January 1, 2005

Author(s)

Drago Skrtic, Sanghun Lee, Joseph M. Antonucci, Da-Wei Liu

This study explores how a) resin grafting potential for amorphous calcium phosphate (ACP) and b) particle size of ACP affects physicochemical properties of composites. Copolymers and composites were evaluated for biaxial flexure strength (BFS), degree of

Analysis by Mass Spectrometry of the Hydrolysis/Condensation Reaction of a Trialkoxysilane in Various Dental Monomer Solutions

January 1, 2005

Author(s)

M Farahani, William E. Wallace, Joseph M. Antonucci, Charles M. Guttman

In Situ Formation of Blends By Photopolymerization of Poly(ethylene glycol) Dimethacrylate and Polylactide

January 1, 2005

Author(s)

K J. Zhang, Carl Simon Jr., N Washburn, Joseph M. Antonucci, Sheng Lin-Gibson

Blends of crosslinked poly(ethylene glycol dimethacrylate) (PEGDMA) with poly (D, L-lactide) (PLA) were prepared by mixing photo-activated PEGDMA (molecular mass: 875 g/mol) and PLA, and subsequently photopolymerizing with visible light. The effects of PLA

Matrix Resin Effects on Selected Physicochemical Properties of Amorphous Calcium Phosphate Composites

January 1, 2005

Author(s)

Joseph M. Antonucci, Drago Skrtic

Synthesis and Characterization of Poly(ethylene glycol) Dimethacrylate Hydrogels

January 1, 2005

Author(s)

Sheng Lin-Gibson, S Bencherif, Joseph M. Antonucci, Horkay F. JonesRL

Facile synthesis and detailed characterization of photo-polymerizable and biocompatible poly(ethylene glycol) dimethacrylates (PEGDM) and their hydrogels are described. Combined analyses of 1H NMR and MALDI-TOF MS confirmed the formation of prepolymers of

Analysis of the Interactions of a Trialkoxysilane With Dental Monomers by MALDI-TOF Mass Spectrometry

August 1, 2004

Author(s)

M Farahani, Joseph M. Antonucci, Kathleen M. Flynn

Depending on the chemical structure of the dental monomer, 3-methacryloxypropyltrimethoxysilane (MPTMS) and other trialkoxysilanes were shown by infrared spectroscopy to undergo two types of reactions in the presence of methacrylic monomers commonly used

Biocompatible Polymer Blends Derived From the Photopolymerization of Polyethylene Glycol Dimethacrylate-Polylactide Mixtures

August 1, 2004

Author(s)

K Zhang, Sheng Lin-Gibson, Carl G. Simon Jr., Joseph M. Antonucci, N Washburn

Miscible liquid blends of photoactivated PEGDMA and low molecular mass PLA were prepared by simple heating. Subsequent photo-polymerization of the activated PEGDMA and PLA yielded clear polymeric blends. The addition of low molecular mass PLA did not

Dental Polymeric Composites Activated With Camphorquinone or Diacyl Phosphine Oxide Photoinitiators

August 1, 2004

Author(s)

N D. Richards, Sabine H. Dickens, Joseph M. Antonucci

Polymeric dental composites based on the highly viscous 2,2-bis[p-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (BisGMA) have been used for over four decades.1 Because of its high viscosity, BisGMA is blended with diluent, lower molecular mass monomers

Organogelators and Their Application in Dental Materials

August 1, 2004

Author(s)

Elizabeth Wilder, Janet Quinn, Joseph M. Antonucci

Dibenzylidene sorbitol (DBS) is an organic molecule capable of inducing physical gelation in a wide variety of organic solvents and polymer melts by forming three-dimensional networks. Recent efforts in this laboratory have found that DBS is capable of

Synthesis and Characterization of PEG Dimethacrylates and their Hydrogels

July 1, 2004

Author(s)

Sheng Lin-Gibson, S Bencherif, James A. Cooper, S Wetzel, Joseph M. Antonucci, Brandon M. Vogel, F Horkay, N. R. Washburn

Facile synthesis and detailed characterization of photo-polymerizable and biocompatible poly(ethylene glycol) dimethacrylates (PEGDM) and poly(ethylene glycol) urethane-dimethacrylates (PEGUDM) are described. Poly(ethylene glycol)s of various molecular

Dental Composites Based on Hybrid and Surface-Modified Amorphous Calcium Phosphates

April 1, 2004

Author(s)

Drago Skrtic, Joseph M. Antonucci, E D. Eanes, Naomi Eidelman

The objectives of this study were to examine the feasibility of preparing hybrid and surface-modified amorphous calcium phosphates (ACP) as fillers for mineral-releasing dental composites and determine whether the mechanical strength of the composites

Effect of Chemical Structure and Composition of the Resin Phase on Mechanical Strength and Vinyl Conversion of Amorphous Calcium Phosphate-Based Composites

March 1, 2004

Author(s)

Drago Skrtic, Joseph M. Antonucci, Walter G. McDonough, D W. Liu

The mechanical properties of recently developed bioactive, anti-demineralizaing/remineralizing, amorphous calcium phosphate (ACP)-based composites are in need of improvment. The objective of this study was to elucidate the effect of structure and