Assessment of post-traumatic PDL cells viability by a novel collagenase assay.

Autor:	Pileggi, Roberta, Dumsha, Thomas C., Nor, Jacques E.
Předmět:	TOOTH transplantation ALVEOLAR process ANALYSIS of variance ANIMALS CATTLE CELL physiology MILK PERIODONTAL ligament PHYSIOLOGIC salines PRESERVATION of organs tissues etc. PROTEOLYTIC enzymes SALT STATISTICAL sampling TEETH WATER TOOTH replantation
Zdroj:	Dental Traumatology; Aug2002, Vol. 18 Issue 4, p186-189, 4p, 2 Charts
Abstrakt:	Both length of extra-alveolar time and type of storage media are significant factors that can affect the long-term prognosis for replanted teeth. Numerous studies have examined various media in an attempt to determine the ideal material for storage of the avulsed tooth. The purpose of this study was to compare the number of viable periodontium ligament (PDL) cells in different storage media using a collagenase assay. Thirty-three freshly extracted human teeth were divided into four experimental and two control groups. The positive and negative controls corresponded to 0 min and an 8-h dry time, respectively. The experimental teeth were stored dry for 30 min and then immersed in one of four media (Hank's balanced salt solution (HBSS), milk, saline, water) for 45 min. The teeth were then treated with dispase grade II and collagenase for 30 min. The number of viable and nonviable PDL cells was counted with a hemocytometer and analyzed. An ANOVA demonstrated no statistically significant differences in the viability of PDL cells among saline, HBSS and milk. Within the parameters of this study, it appears that milk or saline is an equally viable alternative to HBSS for storage of avulsed teeth. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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