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Zhang participating in NIH machinable ceramics grant


Associate Professor Guangming Zhang (ME/ISR) is participating in a five-year, $5.9 million National Institutes of Health grant, "Machinable Ceramics: Optimizing Performance and Properties." This grant is funded through NIH's National Institute of Dental and Craniofacial Research (NIDCR).

The program will develop fundamental understanding of damage initiation and accumulation in all-ceramic layered dental crowns as a function of materials, crown and tooth preparation design, and fabrication variables.

Dr. Zhang and Professor Dianne Rekow of the Basic Sciences and Craniofacial Biology and Orthodontics Department in the College of Dentistry at New York University are responsible for the area of complex loading, crown geometry and performance. This includes research in:

  • Complex loading on layer structures, both flat and crown geometry (sloping cusps)

    • Performance evaluation of fabricated crowns under complex loading

  • Manufacturing issues such as

    • investigation of crack formation
    • maximum principal stress distributions
    • design of experimentaiton: cement layer

  • Experimental and theory/modeling

    • Finite element modeling: monolythic crown system
    • Finite element modeling: flat joint surface
    • Finite element modeling: crown geometry considered
    • Finite element modeling: a layered crown system

The Machinable Ceramics Program is a continuation of seven years' worth of previous NIDCR funding and teamwork on monolithic ceramic crown materials, which has resulted in more than 70 publications, plus proceedings and abstracts. Four PhD dissertations have been based on the work. The strategic approach of the new work will be to move from flat layer structures with simple loads to crowns on real teeth with complex loads.

In addition to the NIDCR funding, corporate partners are providing an estimated $1.5 million in cost sharing. These partners are:

  • Corning Incorporated
  • Dentsply Ceramco
  • Ivoclar Vivadent AG
  • Stain-Gobain Advanced Ceramics
  • Vita Zahnfabrik H Rauter GmbH&Co KG
  • Marotta Dental Studios
  • Jurim Dental Laboratories

The academic and government partners in the program are:

  • New York University (Dianne Rekow and Van Thompson)
  • NIST (Brian Lawn)
  • Princeton University (Wole Soboyejo and Zhigang Suo)
  • University of Maryland (Dr. Zhang, Isabel Lloyd and Otto Wilson)
  • The University of Medicine and Dentistry of New Jersey (Mal Janal

    and Marc Rosenblum)

  • Therics (Heather Beam)
  • UMAB (Elaine Romberg)
  • Private practice (Ken Malament)

November 3, 2002


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