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Effects of intrapulpal temperature change induced by visible light units on the metabolism of odontoblast-like cells.

Authors
  • de Souza, Pedro Paulo Chaves
  • Hebling, Josimeri
  • Scalon, Mariana Grecco
  • Aranha, Andreza Maria Fábio
  • Costa, Carlos Alberto de Souza
Type
Published Article
Journal
American journal of dentistry
Publication Date
Jun 01, 2009
Volume
22
Issue
3
Pages
151–156
Identifiers
PMID: 19650595
Source
Medline
License
Unknown

Abstract

In groups QTH and LED the intrapulpal temperature increased by 6.4 degrees C and 3.4 degrees C, respectively. The difference between both groups was statistically significant (Mann-Whitney; P < 0.05). QTH and LED reduced the cell metabolism by 36.4% and 33.4%, respectively. Regarding the cell metabolism, no statistically significant difference was observed between both groups (Mann-Whitney; P > 0.05). However, when compared to the control, only QTH significantly reduced the cell metabolism (Mann-Whitney; P < 0.05). It was concluded that the irradiance of 0.5 mm-thick human dentin discs with a QTH in comparison to a LED curing unit promoted a higher temperature rise, which propagates through the dentin negatively affecting the metabolism of the underlying cultured pulp cells.

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