ADA presents research results

Miami鈥擳he ADA presented or participated in more than 30 scientific presentations and informational sessions during the International Association for Dental Research’s 87th General Session & Exhibition here April 1-4.

More than 3,200 scientific abstracts, including oral and poster presentations, were presented and some 5,200 professionals attended the meeting, which was also the site of the 38th annual meeting of the American Association for Dental Research and 33rd annual meeting of the Canadian Association for Dental Research.

During the meeting, the ADA Foundation Paffenbarger Research Center, located in Gaithersburg, Md., and part of the ADA Division of Science, presented the following:

• Quantifying Leakage of Dental Composites in Model Cavities;
• Synthesis and Characterization of Chlorhexidine Fluoride;
• Methods for the Measurement of Metals in Dental Porcelain;
• Determination of Fluoride Release Rate from Varnishes by Constant-CompositionTitration;
• Three-Body Wear of Remineralizing Cements;
• Effects of Silane Oligomers on Composite Properties;
• Effect of F:Ca:P Ratio on F Deposition by FCP Complex;
• Fluoride, Calcium, and Phosphate Deposition from Experimental Dental Prophylaxis;
• Unique Handling and Setting Properties of Dual-Paste Premixed CPC;
• Relationship of Strength and Hydroxyapatite Formation in Dual-Paste Premixed CPC;
• Porosity and Dissolution Rate of Mannitol Incorporated Calcium Phosphate Cement;
• Remineralization of Dentin Lesions from a Whisker-Reinforced, Resin-Based Composite;
• Remineralization of Natural Dentin Caries with One Experimental Composite Resin;
• Fluoride Concentration Required to Prevent Citric Acid Erosion of Enamel;
• In Vitro Remineralizing Efficacy of an Experimental ACP Composite;
• Assessing Fluoride Concentration and Leachability in Dental Varnishes.

PRC staff who presented research were Clifton M. Carey, Ph.D.; Dr. Sabine Dickens; Glenn Flaim; Kathleen Hoffman; Burton Schmuck; Ming S. Tung, Ph.D.; Jirun Sun, Ph.D.; Limin Sun, Ph.D.; Dr. Maria Cherng; Larry Chow, Ph.D.; Shozo Takagi, Ph.D.; Stan Frukhtbeyn; Dr. Bin Yang; and Justin O’Donnell.

Members of the ADA Division of Science in Chicago presented “Contrast-Transfer-Response of Manual and Auto-Focus Intraoral Cameras.”

Chicago staff who contributed to the research of this presentation were Nikola Njegovan; Dr. John Kuehne; Spiro Megremis, Ph.D.; Hanu Batchu, Ph.D.; and Krishna Aravamudhan, BDS.

Additionally, Julie Frantsve-Hawley, Ph.D., gave a presentation about the ADA’s new Evidence-Based Dentistry Web site at the meeting, and collaborated on the presentation, “Patient Attitudes on Screening/Monitoring of Medical Conditions by Dentists.”

Tom Wall and Adriana Menezes of the ADA HPRC/Survey Center in Chicago presented, respectively:

• Dental Service Utilization in Remote Rural and Low-Income Urban Areas;
• Dental Specialists’ Financial Characteristics, 1992 to 2005.

PRC staff also collaborated on the following presentations:

• Flaw Sensitivity of Dentin: Importance of Depth and Microstructure (Collaboration with University of Maryland Baltimore County);
• Calcium-Phosphate Resin Composite: pH Effects on Ion-Release and Mechanical Properties (collaboration with University of Maryland Baltimore College of Dental Surgery);
• Fluoride Amounts in Infant Formulas Reconstituted with Fluoridated Waters;
• Combinatorial Characterization of Chemical and Mechanical Properties of Dental Composites;
• 3D Evaluation of Dental Composite Shrinkage in Teeth;
• Effect of Decreasing Water: Powder on the Setting Expansion of MTA;
• Dental Polymer Fabrication Protocol Affects Streptococcus mutans Colonization.

Drago Skrtic, Ph.D.; Dr. Gary Schumacher; Naomi Eidelman, Ph.D.; Edward Parry; and Anthony Giuseppetti contributed to research projects at the PRC and National Institute of Standards and Technology (where PRC is housed).

Presenters and collaborators from outside organizations included:

Joseph M. Antonucci, Ph.D. (NIST); Sheng-Lin Gibson, Ph.D. (NIST); Nancy Lin, Ph.D. (NIST); Yajun Cheng, Ph.D. (NIST); Diana Zeiger, Ph.D. (NIST); Dr. Stephen Chartier (U.S. Air Force); Dr. Gary Goodell; Dr. Michael Hawley; Dr. Terry Webb; Dr. Debra Vazquez; Dr. Glen Imamura; (Navy); Heon Ryou; Nikhil Amin; Elaine Romberg, Ph.D.; Duck Wang, Ph.D.; Dwayne Arola, Ph.D.; Huakun Xu, Ph.D.; Michael Weir, Ph.D. (all from the University of Maryland system, including the dental and engineering schools); and Dr. Go Inoue (Tokyo Medical and Dental University).

Additionally, interns Joselle McCracken, Sarah Langhorst, Philip Voissem, Seena Patel and Tiffany Andersen contributed to the ADA research effort.聽