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Kirschneck, Christian ; Bauer, Maria ; Gubernator, Joshua ; Proff, Peter ; Schröder, Agnes

Comparative assessment of mouse models for experimental orthodontic tooth movement

Kirschneck, Christian , Bauer, Maria, Gubernator, Joshua, Proff, Peter and Schröder, Agnes (2020) Comparative assessment of mouse models for experimental orthodontic tooth movement. Scientific Reports 10 (1), pp. 1-12.

Date of publication of this fulltext: 09 Dec 2020 16:36
Article
DOI to cite this document: 10.5283/epub.44207


Abstract

Animal experiments are essential for the elucidation of biological-cellular mechanisms in the context of orthodontic tooth movement (OTM). So far, however, no studies comparatively assess available mouse models regarding their suitability. OTM of first upper molars was induced in C57BL/6 mice either via an elastic band or a NiTi coil spring for three, seven or 12 days. We assessed appliance ...

Animal experiments are essential for the elucidation of biological-cellular mechanisms in the context of orthodontic tooth movement (OTM). So far, however, no studies comparatively assess available mouse models regarding their suitability. OTM of first upper molars was induced in C57BL/6 mice either via an elastic band or a NiTi coil spring for three, seven or 12 days. We assessed appliance survival rate, OTM and periodontal bone loss (mu CT), root resorptions, osteoclastogenesis (TRAP(+) area) and local expression of OTM-related genes (RT-qPCR). Seven days after the elastic bands were inserted, 87% were still in situ, but only 27% after 12 days. Survival rate for the NiTi coil springs was 100% throughout, but 8.9% of the animals did not survive. Both methods induced significant OTM, which was highest after 12 (NiTi spring) and 7 days (band), with a corresponding increase in local gene expression of OTM-related genes and osteoclastogenesis. Periodontal bone loss and root resorptions were not induced at a relevant extent by neither of the two procedures within the experimental periods. To induce reliable OTM in mice beyond 7 days, a NiTi coil spring is the method of choice. The elastic band method is recommended only for short-term yes/no-questions regarding OTM.



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Details

Item typeArticle
Journal or Publication TitleScientific Reports
Publisher:Nature
Place of Publication:LONDON
Volume:10
Number of Issue or Book Chapter:1
Page Range:pp. 1-12
Date22 July 2020
InstitutionsMedicine > Lehrstuhl für Kieferorthopädie
Identification Number
ValueType
10.1038/s41598-020-69030-xDOI
KeywordsGINGIVAL CREVICULAR FLUID; K MESSENGER-RNA; CATHEPSIN-K; ROOT RESORPTION; HPDL CELLS; RAT; EXPRESSION; COMPRESSION; ACTIVATION; CYTOKINES;
Dewey Decimal Classification600 Technology > 610 Medical sciences Medicine
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-442072
Item ID44207

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