Publication:
Effects of different types of tooth movement and force magnitudes on the amount of tooth movement and root resorption in rats

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Issued Date

2014

Resource Type

Article

File Type

application/pdf

ISSN

33219

DOI

10.2319/121913-929.1

Other identifier(s)

2-s2.0-84908879382

Rights Holder(s)

Scopus

Bibliographic Citation

Angle Orthodontist. Vol 84, No.6 (2014), p.1079-1085

Suggested Citation

Nakano T., Hotokezaka H., Hashimoto M., Sirisoontorn I., Arita K., Kurohama T., Darendeliler M.A., Yoshida N. Effects of different types of tooth movement and force magnitudes on the amount of tooth movement and root resorption in rats. Angle Orthodontist. Vol 84, No.6 (2014), p.1079-1085. doi:10.2319/121913-929.1 Retrieved from: https://hdl.handle.net/20.500.14740/6259

Title

Effects of different types of tooth movement and force magnitudes on the amount of tooth movement and root resorption in rats

Author(s)

Nakano T.
 Hotokezaka H.
 Hashimoto M.
 Sirisoontorn I.
 Arita K.
 Kurohama T.
 Darendeliler M.A.
 Yoshida N.

Abstract

Objective: To investigate differences in the amount of tooth movement and root resorption that occurred after tipping and bodily movement of the maxillary first molar in rats. Materials and Methods: Ten-week-old female Wistar rats were divided into two groups according to type of tooth movement and subdivided into four subgroups according to the magnitude of applied force. Nickel-titanium closed-coil springs exerting forces of 10, 25, 50, or 100 g were applied to the maxillary left first molars to induce mesial tooth movement. We designed a novel orthodontic appliance for bodily tooth movement. Tooth movement distance and root resorption were measured using microcomputed tomography and scanning electron and scanning laser microscopy. Results: The amount of tooth movement in the bodily tooth movement group was less than half that in the tipping tooth movement group. The greatest amount of tooth movement occurred in the 10-g tipping and 50-g bodily tooth movement subgroups, and the amount of tooth movement decreased with the application of an excessive magnitude of force. Conversely, root resorption increased when the heavier orthodontic force was applied in both groups. Root resorption in the tipping tooth movement group was approximately twice that in the bodily tooth movement group. Conclusions: Root resorption in the tipping tooth movement group was more pronounced than that in the bodily tooth movement group. Although the amount of tooth movement decreased when extremely heavy forces were applied, root resorption increased in both the tipping and bodily tooth movement groups in rats. © 2014 by The EH Angle Education and Research Foundation, Inc.

Subject(s)

Dental alloy
 Nickel
 Titanium
 Titanium nickelide
 Animal
 Chemistry
 Classification
 Comparative study
 Confocal microscopy
 Devices
 Female
 Maxilla
 Mechanical stress
 Micro-computed tomography
 Molar tooth
 Orthodontic wire
 Orthodontics
 Pathology
 Procedures
 Rat
 Root Resorption
 Scanning electron microscopy
 Three dimensional imaging
 Tooth crown
 Tooth Movement
 Tooth root
 Wistar rat
 Animals
 Dental Alloys
 Female
 Imaging, Three-Dimensional
 Maxilla
 Microscopy, Confocal
 Microscopy, Electron, Scanning
 Molar
 Nickel
 Orthodontic Anchorage Procedures
 Orthodontic Appliance Design
 Orthodontic Wires
 Rats
 Rats, Wistar
 Root Resorption
 Stress, Mechanical
 Titanium
 Tooth Crown
 Tooth Movement
 Tooth Root
 X-Ray Microtomography

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URI

https://hdl.handle.net/20.500.14740/6259

Collections

Scopus: Year 1983-2021

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