Evaluation of the viability of periodontal ligament cell in rat teeth using slow cryopreservation method with magnetic field.
10.5395/JKACD.2008.33.4.332
- Author:
Hyun Jung AHN
1
;
Eui Seong KIM
;
Jin KIM
;
Duck Won KIM
;
Ki Yeol KIM
;
Chan Young LEE
;
Seung Jong LEE
Author Information
1. Department of Conservative Dentistry, Yonsei University, Seoul, Korea. andyendo@yuhs.ac
- Publication Type:Original Article
- Keywords:
TUNEL;
Periodontal ligament cell;
MTT;
Magnetic field;
Cryopreservation
- MeSH:
Anesthesia;
Animals;
Cryopreservation;
Dimethyl Sulfoxide;
Eosine Yellowish-(YS);
Female;
Humans;
In Situ Nick-End Labeling;
Magnetic Fields;
Magnetics;
Magnets;
Molar;
Periodontal Ligament;
Rats;
Tiletamine;
Tooth
- From:Journal of Korean Academy of Conservative Dentistry
2008;33(4):332-340
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate the viability of periodontal ligament cell in rat teeth using slow cryopreservation method with magnetic field through MTT assay and TUNEL test. For each group, 12 teeth of 4 weeks old white female Sprague-Dawley rat were used for MTT assay, and 6 teeth in TUNEL test. The Maxillary left and right, first and second molars were extracted as atraumatically as possible under tiletamine anesthesia. The experimental groups were group1 (immediately extraction), group 2 (cold preservation at 4degrees C for 1 week), group 3 (rapid cryopreservation in liquid nitrogen), group 4 (slow cryopreservation with magnetic field of 1 G), and group 5 (slow cryopreservation). F medium was used as preservation medium and 10% DMSO as cryoprotectant. After preservation and thawing, the MTT assay and TUNEL test were processed. One way ANOVA and Scheffe method were performed at the 95% level of confidence. The value of optical density obtained after MTT analysis was divided by the value of eosin staining for tissue volume standardization. In both MTT assay and TUNEL test, it had showed no significant difference among group 3, 4, and 5. And group 3 had showed higher viability of periodontal ligament cell than group 2. From this study, slow cryopreservation method with magnetic field can be used as one of cryopreservation methods.
