TITLE

Establishment and experimental study of alveolar preservation before dental implantation in Beagle dogs

AUTHOR(S)
HAN Xue-song; LI Xiu-juan; HUANG Yuan-liang; ZHU Guo-guang; YOU Su-lan; TAN Luan-jun
PUB. DATE
February 2013
SOURCE
Shanghai Journal of Stomatology;Feb2013, Vol. 22 Issue 1, p46
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
PURPOSE: To establish the model of alveolar ridge preservation after tooth extraction for dental implant replacement, and to observe the effect of tissue engineered bone on osseointegration. METHODS: Isolated BMSCs were expanded and osteogenically induced in vitro. The tissue engineering complex was constructed with BMSCs/A-PCPC in vitro. Six extraction sockets, with three on each side, were created in the mandibles of four Beagle dogs by extracting the second, third and fourth premolars. BMSCs/A-PCPC were placed on one side of the extraction sockets, while autogenous bone, A-PCPC and nothing were placed on the other side as control. X-ray and CT scans were conducted 1day, 4 and 12 weeks after operation to detect the change of the alveolar ridge. The bone of sockets were harvested at 8-week post-implantation and subject to histological for evaluating. SPSS17.0 software package was used for data analysis. RESULTS: Radiographs demonstrated higher radiodensity in group of complex than in simple materials group, autogenous bone group after 4 weeks. Hard tissue biopsy at 12-week showed that bone activity of BMSCs/A-PCPC complex was better than the other groups. Spiral CT analysis showed that alveolar ridge of each group experienced a certain degree of absorption. At 12-week, the alveolar ridge height reduction values in A-PCPC group was smaller than in A-PCPC group, autogenous bone group and blank group (P<0.05). CONCLUSION: The BMSCs/A-PCPC complex is favorable for preservation of alveolar ridge.
ACCESSION #
87665164

 

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