Rate of orthodontic tooth movement after changing the force magnitude: an experimental study in beagle dogs

2010 ◽  
Vol 13 (4) ◽  
pp. 238-245 ◽  
Author(s):  
EJ Van Leeuwen ◽  
AM Kuijpers-Jagtman ◽  
JW Von den Hoff ◽  
FADTG Wagener ◽  
JC Maltha
2008 ◽  
Vol 66 (12) ◽  
pp. 2467-2475 ◽  
Author(s):  
Xiang-Long Han ◽  
Yao Meng ◽  
Na Kang ◽  
Tao Lv ◽  
Ding Bai

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Hyung-Joo Choi ◽  
Dong-Yeol Lee ◽  
Tae-Woo Kim

Alveolar augmented corticotomy is effective in accelerating orthodontic tooth movement, but the effect only lasts for a relatively short time. Therefore, the purpose of this study was to investigate the underlying biology of the immediate periodontal response to orthodontic tooth movement after a corticotomy with alloplastic bone grafts. The results demonstrated that measurable tooth movement began as early as 3 days after the intervention in beagle dogs. Based on the results and histological findings, augmented corticotomy-facilitated orthodontic tooth movement might enhance the condition of the periodontal tissue and the stability of the outcomes of orthodontic treatment.


2011 ◽  
Vol 17 (9-10) ◽  
pp. 1313-1325 ◽  
Author(s):  
Dongjie Zhang ◽  
Fengting Chu ◽  
Yan Yang ◽  
Lunguo Xia ◽  
Deliang Zeng ◽  
...  

2006 ◽  
Vol 76 (6) ◽  
pp. 1041-1046 ◽  
Author(s):  
Akihiro Suzuki ◽  
Hiroyasu Kanetaka ◽  
Yoshinaka Shimizu ◽  
Ryo Tomizuka ◽  
Hideki Hosoda ◽  
...  

Abstract Objective: To examine the mechanical properties and the usefulness of titanium-niobium-aluminum (Ti-Nb-Al) wire in orthodontic tooth movement as compared with nickel-titanium (Ni-Ti) wire. Materials and Methods: The load deflection of expansion springs was gauged with an original jig. The gradient of the superelastic region was measured during the unloading process. Expansion springs comprising the two types of alloy wires were applied to upper first molars of rats. The distance between the first molars was measured with micrometer calipers. Results: The force magnitude of the Ti-Nb-Al expansion spring was lower than that of the Ni-Ti expansion spring over the entire deflection range. The initial force magnitude and the gradient in the superelastic region of the Ti-Nb-Al expansion springs were half those of the Ni-Ti expansion springs. Thus, Ti-Nb-Al expansion springs generated lighter and more continuous force. Tooth movement in the Ni-Ti group proceeded in a stepwise fashion. On the other hand, tooth movement in the Ti-Nb-Al group showed relatively smooth and continuous progression. At 17 days after insertion of expansion springs, there were no significant differences between the Ti-Nb-Al and Ni-Ti groups in the amount of tooth movement. Conclusions: These results indicate that Ti-Nb-Al wire has excellent mechanical properties for smooth, continuous tooth movement and suggest that Ti-Nb-Al wire may be used as a practical nickel-free shape memory and superelastic alloy wire for orthodontic treatment as a substitute for Ni-Ti wire.


2022 ◽  
Vol 905 ◽  
pp. 277-281
Author(s):  
Lan Lei Wang ◽  
Jian Xin Zhang ◽  
Yuan Li ◽  
Sai Nan Zhao

The research is to analyse the immunohistochemical reaction of orthodontic force on the periodontium reformed by nanobiphasic calcium phosphate ceramics (nBCP). Two third incisors were selected randomly and operated as experimental groups in 2 Beagle dogs. In the labial aspects of the third incisors, alveolar bone defects were surgically made and implanted with NBCP. The contralateral teeth in the same jaw did not receive any treatment as control. After 24 weeks, all the third incisors were moved labially. The dogs were euthanized 4 weeks later. The expression levels of osteocalcin were detected by immunohistochemical staining. Positive osteocalcin expressions in regenerated periodontium were observed and compared with the normal periodontium in the control groups. There were no significant differences within and between them. It means the periodontium regenerated by nBCP can bear orthodontic forces with a normal function. Based on these findings, we concluded that nBCP may offer a new bone graft choice for periodontic disease patients who have demands for orthodontic treatment.


1979 ◽  
Vol 58 (8) ◽  
pp. 1754-1764 ◽  
Author(s):  
Ryszard J. Pryputniewicz ◽  
Charles J. Burstone

The holographic technique, recently developed for precise and accurate measurement of tooth displacements, was used to study the three-dimensional motion of human teeth. Maxillary central incisors were loaded with forces of 300 grams and 500 grams. Translations and rotations in three-dimensions were measured over 45 seconds. The experimental results, presented as a function of time, indicate that the instantaneous centers of rotation can be represented by space centrodes that are characteristic for each patient and the applied force system.


Author(s):  
Yijin Ren ◽  
Jaap C Maltha ◽  
Martin A Van 't Hof ◽  
Anne Marie Kuijpers-Jagtman

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