Josephine Esquivel-Upshaw

Dr. Josephine Esquivel-Upshaw

University of Florida College of Dentistry
orcid

Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 January 2018 in Journal of Dentistry
Verified
Journal Article
Closed access
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw
MKM.J. Kim
M.J. Kim
Shu-Min HsuShu-Min Hsu
Shu-Min Hsu
NAN. Abdulhameed
N. Abdulhameed
RJR. Jenkins
R. Jenkins
ACA.E. Clark
A.E. Clark

8 April 2013 in Journal of Dental Research
Verified
Journal Article
Closed access
PDF file
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw
FDF.Y. Dieng
F.Y. Dieng
ACA.E. Clark
A.E. Clark
DND. Neal
D. Neal
KAK.J. Anusavice
K.J. Anusavice
We tested the hypotheses that glass-ceramic veneers and overglazes degrade by ion exchange in an acidic environment, and that they degrade by breakdown of the silica network in a basic environment. Disk specimens of glass-ceramic veneer and glaze were fabricated and immersed in pH 2, 7, or 10 buffer solutions, for 1, 3, 5, 10, 15, and 30 days. Each specimen was placed in a shaker bath containing de-ionized distilled water at 80°C. Concentrations of Al3+, Ca2+, Zn2+, Li2+, and Si4+ were analyzed by means of inductively coupled plasma atomic emission spectrometry (ICP/AES). Statistical analyses were performed by factorial ANOVA. Significant differences occurred among leached ion concentrations as a function of material type, solution pH, and exposure time. A substantial release of Si occurred at pH 10 over time, leading to a breakdown of the glass phase. At pH 2, dissolution was controlled by an ionic exchange mechanism. We conclude that ceramic veneers and glazes may be susceptible to considerable degradation in low- and high-pH buffer solutions.

1 February 2019 in The Journal of Prosthetic Dentistry
Verified
Journal Article
Closed access
FFFadi A.L. Farawati
Fadi A.L. Farawati
Shu-Min HsuShu-Min Hsu
Shu-Min Hsu
EOEdgar O’neill
Edgar O’neill
DNDan Neal
Dan Neal
ACArthur Clark
Arthur Clark
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw

14 September 2012 in Journal of Prosthodontics
Verified
Journal Article
Closed access
PDF file
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw
WRWilliam Rose
William Rose
EOErica Oliveira
Erica Oliveira
MYMark Yang
Mark Yang
ACArthur E. Clark
Arthur E. Clark
KAKenneth Anusavice
Kenneth Anusavice

12 June 2013 in Journal of Prosthodontics
Verified
Journal Article
Closed access
PDF file
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw
ACArthur E. Clark
Arthur E. Clark
JSJonathan J. Shuster
Jonathan J. Shuster
KAKenneth J. Anusavice
Kenneth J. Anusavice

1 March 2020 in The Journal of Prosthetic Dentistry
Verified
Journal Article
Closed access
NMNicole Martino
Nicole Martino
CTCaroline Truong
Caroline Truong
ACArthur E. Clark
Arthur E. Clark
EOEdgar O'Neill
Edgar O'Neill
Shu-Min HsuShu-Min Hsu
Shu-Min Hsu
Josephine Esquivel-UpshawJosephine Esquivel-Upshaw
Josephine Esquivel-Upshaw