Allyson A. Barrett

Research Support Staff
Phone: 352.392.0716
abarrett@dental.ufl.edu

Main Interests:

My work focuses on Dr. K.J. Anusavice’s NIDCR sponsored research of dental ceramics investigating optimized stress states within dental all-ceramic composites. This ceramics optimization research includes thermal, mechanical and optical properties. We have been characterizing viable ranges of thermal compatibility for ceramic combinations analyzing the related creep and stresses. Comparison of thermal coefficients of expansion and contraction alone is not necessarily reliable or sufficient for predicting successful ceramic combinations. We have employed two bi-layered geometric models (a solid sphere and a hollow cylinder) to mimic bridges for compatibility testing. The in vitro test results for dilatometry and specimen construction are being compared to FEA analysis.

As an outcome of Dr. Anusavice’s NIH/NIDCR Center Grant research, I developed a program for evaluating and improving color vision acuity for individual dental observers (dentists, dental students and other office personnel) Groups (up to 80) can perform individually in the UFCD pre-clinical simulation lab. This involves specific objective exercises using dental materials to teach color science principles and to improve an individuals’ dental visual shade matching and color discrimination ability. A dental porcelain set used for color discrimination ability was designed by Dr. Anusavice.

Selected Publications:

Patel, S. B. , Gordan, V. V., Barrett, A. A., Shen, C., 2004. Effect of surface finishing and storage solution on color stability of composites. JADA 135,587-594.

Autio-Gold J., Barrett A. A. Fluoride varnish effect on hue and value of
restorative materials, In print 2004, Oper Dent.

Gordan, V. V., Patel, S. B., Barrett, A. A., Shen, C., 2003. Effect of surface
finishing and storage media on bi-axial flexure strength and microhardness of
resin-based composite. Oper Dent, 28:5, 560-7.

Barrett,A.A., Grimaudo,N.J., Anusavice,K.J., Yang,M.K., 2002. Influence of tab and disk design on shade matching of dental porcelain. J Prosthet Dent 88:6, 591-7.