Experiment method of orthodontic near shifting molar murine animals

Abstract

The invention discloses an experiment method of orthodontic near shifting molar murine animals, which comprises the steps of (1) preparing an orthodontic near shifting molar correcting device: firstly making a rat dentition plaster model, and secondly making anchorage teeth and individualized bands for moving the teeth; and (2) establishing an orthodontic near shifting molar animal model. The invention further discloses the orthodontic near shifting molar correcting device, which comprises an individualized band matched and fixedly sleeved with rat incisor teeth, an individualized band matched and fixedly clamped with rat molar and nickel titanium tension springs. Two individualized bands are both provided with traction holes, two ends of the nickel titanium tension springs are respectively connected with one ends of two ligature wires, and the other ends of the ligature wires are fixedly connected to the individualized bands through the traction holes. The experiment method reduces shedding rate of the correcting device in the moving process of the orthodontic teeth and damage to tissue, enables correction force to be scientifically distributed on the teeth, facilitates directional traction of the teeth, and provides security for smooth performing of animal experiments.

Description

technical field [0001] The invention relates to a rodent animal experiment method for orthodontic mesially moving molars. Background technique [0002] At present, with the improvement of living standards, more and more people choose orthodontic treatment to correct deformities such as misaligned teeth and protrusions. The core of orthodontics lies in the controllable movement of teeth in the jawbone. For this reason, many scholars have done a lot of research on tooth movement. There are many factors that affect tooth movement, and the influencing mechanisms are also different. Some implementation measures cannot be directly studied on humans. Therefore, animal experiments have become one of the basic experimental methods for orthodontic tooth movement research. [0003] The results of animal experiments are based on well-established animal experimental models, and the establishment of animal experimental models is first of all the selection of experimental animals. It is ...

AI Technical Summary

Problems solved by technology

Although this method is improved compared with the previous method, due to the relatively poor compliance of the animals and the continuous growth of the incisor roots of the rats, the incisor orthodontic device is easy to fall off; and the incisor part of the device is prepared It is necessary to grind away a certain amount of tooth tissue to prepare the retention groove, which will cause great damage to the teeth of rats, and even lead to the fracture of the incisors.

However, due to the small oral cavity of rats, it is more laborious to wear the stainless steel ligature wire between the first molar and the second molar, and after the first molar moves, the ligature wire is easy to slip from the gap between the first and second molar , the retention of the orthodontic device is poor, which affects the smooth progress of the experiment

In addition, in terms of periodontal, the orthodontic device is also prone to cause gingival inflammation of the first molar and alveolar bone resorption

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