A practical training method for pushing molars backward to prevent tooth protrusion

Abstract

The present invention belongs to the field of medical operation training methods, and specifically relates to a practical training operation method for pushing molars backward to prevent tooth protrusion. The method comprises the following steps: making a sequence model of deformed teeth, combining orthodontic brackets and custom arch wires to take a first stage of treatment, and then replacing the arch wire to carry out a second stage of treatment, thereby improving the clinical operation level of medical personnel and solving the technical problem that doctors in the prior art lack proficient techniques for pushing molars backwards, which can lead to anterior tooth protrusion, and have no targeted practical training.

Description

Technical Field

[0001] The invention belongs to the field of medical operation training methods, and in particular relates to a practical training operation method for pushing molars backward to prevent tooth protrusion. Background Art

[0002] In the process of pushing the molars backward, a series of nickel-titanium wires of varying specifications, from thin to thick, are used to displace the molars, and finally stainless steel wires are used for installation and stabilization. However, the problem is that in the process of pushing the molars backward, the front teeth are subjected to interaction forces, resulting in protruding mouths and buck teeth. Currently, there is no particularly good way to improve this situation. In the existing technology, support is added and piles are driven at the rear end of the posterior molars. However, the piles are prone to loosening or falling off during driving or use, and this method damages the gums. Therefore, doctors need to conduct practical training through models to acquire the technique of pushing the molars backward without affecting the front teeth, further improve their proficiency, and thus provide strong guarantees for clinical practice. Summary of the Invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a practical training operation method for pushing molars backward to prevent tooth protrusion, which can solve the technical problem in the prior art that doctors lack skilled techniques for pushing molars backward which will cause front teeth protrusion and have no targeted practical training.

[0004] The specific technical solution adopted in the present invention is:

[0005] A training method for pushing molars backward to prevent tooth protrusion comprises the following steps:

[0006] S1: Make an artificial deformed tooth sequence model. The deformed tooth sequence model is divided into an upper tooth sequence model and a lower tooth sequence model. The deformed tooth sequence model includes a positioning template, artificial teeth, and a wax rim. The artificial teeth are installed in the positioning template according to the pre-designed deformity sequence requirements, and the melted wax rim is filled. After the wax rim solidifies, the artificial deformed tooth sequence model is obtained.

[0007] S2: Arrange the fulcrum and glue the orthodontic bracket near the center of the crown;

[0008] S3: Making a custom archwire: According to the fluctuations of the bracket grooves on the deformed teeth, the stainless steel round wire is bent into a custom archwire;

[0009] S4: Bending point positioning. The last molar to be pushed is numbered N. The tooth number is decremented by 1 in the mesial direction and incremented by 1 in the distal direction. The bending point of the adaptable archwire is positioned at the edge of the mesial end of the orthodontic bracket. The bending points of the adaptable archwire are made in sequence from tooth N-1 to the mesial direction. A straight line segment is reserved at the distal end of tooth N. The orthodontic brackets on all teeth except the molar to be pushed are fixed and ligated.

[0010] S5: Install the orthodontic nickel-titanium push spring. The nickel-titanium push spring is placed on the follower and located between tooth N and tooth N-1. The ratio of the archwire length to the spring length of the orthodontic push spring is 1:2. At this time, a heating device is used to heat the deformed tooth sequence model to soften the wax ridge.

[0011] S6: Install rubber bands to connect the molars that have been pushed into place with the orthodontic brackets on the corresponding mandibular teeth through rubber bands to maintain the gap between the molars that have been pushed into place and the teeth that have not been pushed back;

[0012] S7: Replace the custom arch wire with a nickel-titanium arch wire, and use the gap created by S6 to align and close the remaining teeth.

[0013] As a further technical solution, step S51 is also included after step S5: after the Nth tooth is pushed forward, the N-1th tooth is pushed forward, and the orthodontic nickel-titanium push spring is installed between the N-1th tooth and the N-2th tooth.

[0014] As a further technical solution, step S8 is also included: after the orthodontic training operation steps S2-S7 are completed, the wax ridge is completely melted, and step S1 is performed to remake the orthodontic tooth sequence model into the deformed tooth sequence model used for training.

[0015] As a further technical solution, the diameter of the stainless steel round wire in step S3 is 0.018 mm.

[0016] As a further technical solution, the nickel-titanium arch wire in step S7 is first aligned and gaps are closed using nickel-titanium round wire and then nickel-titanium square wire. The wire diameter of the nickel-titanium round wire is first 0.014mm and then changed to 0.018mm. The size of the nickel-titanium square wire is 0.018mm×0.025mm.

[0017] The beneficial effects of the present invention are:

[0018] The present invention discloses a practical training method for pushing molars backward to prevent tooth protrusion. The method comprises installing an orthodontic device on an artificially manufactured deformed tooth sequence model and combining the method with the training method. Steps S2 to S5 are the first orthodontic operation. By engaging the bending point of the conformable archwire with the orthodontic bracket, several front teeth form a whole to push the molars backward, thereby changing the reaction force of the nickel-titanium push spring from acting solely on the front teeth to a dispersed force acting on several front teeth, thereby avoiding the problem of front tooth protrusion.

[0019] S6: After the target molar is pushed back to the predetermined position, a gap is formed between the anterior teeth and the molar. In order to keep the gap stable, a rubber band is used to hold the molar in place.

[0020] S7 is to use the existing gap to align the front teeth and close the gap, so that the front teeth will not protrude and the orthodontic effect can be achieved;

[0021] Through the above training, medical personnel can master the operation techniques of anterior tooth protrusion in the process of pushing molars backward, and can improve the proficiency of the operation in the process of repeated training, thereby solving the problems of anterior tooth protrusion and low proficiency of medical personnel in pushing molars backward in the existing technology. On the one hand, it helps to improve the clinical skills of medical personnel, and on the other hand, it can also reduce the patient's chairside time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the model structure of the present invention;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] In the attached figure, 1. positioning template; 2. artificial teeth; 3. orthodontic brackets; 4. custom arch wire; 5. rubber tension band. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] Specific implementation examples Figures 1-2 As shown, a training method for pushing molars backward to prevent tooth protrusion includes the following steps:

[0027] S1: Make an artificial deformed tooth sequence model. The deformed tooth sequence model is divided into an upper tooth sequence model and a lower tooth sequence model. The deformed tooth sequence model includes a positioning template, artificial teeth, and a wax rim. The artificial teeth are installed in the positioning template according to the pre-designed deformity sequence requirements, and the melted wax rim is filled. After the wax rim solidifies, the artificial deformed tooth sequence model is obtained.

[0028] In this embodiment, step S1 first involves making a deformed tooth sequence model based on the needs of the practical training operation. The medical staff deformably positions the artificial teeth within the positioning template to create a deformed tooth sequence model that requires pushing the molars backward for orthodontic treatment. The deformed artificial teeth are positioned by filling the positioning template with melted wax ridges. The melted wax ridges gradually harden as the temperature decreases, thereby obtaining a complete deformed tooth sequence model.

[0029] S2: Arrange the fulcrum and glue the orthodontic bracket near the center of the crown;

[0030] S3: Making a custom archwire: According to the fluctuations of the bracket grooves on the deformed teeth, the stainless steel round wire is bent into a custom archwire;

[0031] S4: Bending point positioning. The last molar to be pushed is numbered N. The tooth number is decremented by 1 in the mesial direction and incremented by 1 in the distal direction. The bending point of the adaptable archwire is positioned at the edge of the mesial end of the orthodontic bracket. The bending points of the adaptable archwire are made in sequence from tooth N-1 to the mesial direction. A straight line segment is reserved at the distal end of the adaptable archwire at tooth N. The orthodontic brackets on all teeth except the molar to be pushed are fixed and ligated. The ligature wire is 0.25 mm.

[0032] S5: Install the orthodontic nickel-titanium push spring. The nickel-titanium push spring is placed on the custom arch wire between tooth N and tooth N-1. The ratio of the arch wire length to the spring length at the part where the orthodontic push spring is placed is 1:2. At this time, a heating device is used to heat the deformed tooth sequence model to soften the wax ridge.

[0033] In steps S2-S5, the specific embodiment is that the medical staff needs to perform practical training operations of pushing the molars backwards according to the method of the present invention on this deformed tooth sequence model. First, the last molar on the left and right is pushed as the operation object, and orthodontic brackets are installed on each tooth of the deformed tooth sequence model. The medical staff who install the orthodontic brackets select the optimal position for installation and pasting according to the position of the teeth and the surface condition of the teeth. Since the position of the teeth is deformed and the optimal position for pasting the orthodontic brackets on the tooth surface is not the same, the position of the orthodontic brackets is actually staggered. Therefore, it is difficult to install the stainless steel round wire into the bracket of the orthodontic bracket without bending it, so it is necessary Making a flexible arch wire. At the same time, in the prior art, when pushing the molars backward, the nickel-titanium wire generally used has memory. However, when pushing the molars backward, the reaction force will push the anterior teeth forward. In the present invention, the key point is the positioning selection of the bending point when bending the flexible arch wire. The reason why the anterior teeth protrude when pushing the molars forward is that the anterior teeth bear the thrust and the force on the anterior teeth is on the teeth closest to the molars to be pushed, resulting in displacement one by one, and finally causing deformation and protrusion. In order to avoid this situation, the selection of the bending point is particularly important. The last molar on the left and right is numbered N, the mesial direction number is reduced by 1, and the distal direction number is increased by 1. First, the bending point position of the flexible arch is connected to the orthodontic bracket The bracket of the slot is located on the mesial side of the orthodontic bracket. This is the choice of the bending point position. Another key point is that the bending points are set one by one from tooth N-1 to the mesial direction. Then when the last molar is pushed backward, the reaction force will be fed back to tooth N-1. Tooth N-1 will transmit the force to the bending point through the orthodontic bracket. The bending point and the orthodontic bracket are stuck, and the reaction force is transmitted to each tooth on the mesial side in turn, dispersing the reaction force and avoiding the protrusion of the front teeth due to the reaction force. This depends on the medical staff's grasp of the bending point position, which requires repeated practice. When the last molar is pushed, the orthodontic bracket maintains a coordinated relationship with the arch wire, and a straight line segment is reserved, so that To ensure the stability of its movement, the reserved straight section should not be too long to avoid puncturing the tissue. When pushing the molars backward, it is necessary to install an orthodontic nickel-titanium push spring on the flexible arch wire. The nickel-titanium push spring should not be less than twice the distance between the two orthodontic brackets. The ratio of the reserved length of the arch wire to the spring length is 1:2. The orthodontic nickel-titanium push spring has good memory properties and can therefore output a stable thrust. The spring is installed between tooth No. N and tooth No. N-1. After installation, the wax ridge is softened and a heating device is used. A built-in heating wire or a hair dryer can be used to simulate the movement of teeth during orthodontic correction, thereby tracking the changes in the anterior teeth. After the molars are pushed backward into place, a gap between the pushed-in molars and the non-pushed-back molars can be obtained.

[0034] S6: Install rubber bands to connect the molars that have been pushed into place with the orthodontic brackets on the corresponding mandibular teeth through rubber bands to maintain the gap between the molars that have been pushed into place and the teeth that have not been pushed back;

[0035] In step S6, in a specific embodiment, in order to maintain the stability of the gap, a rubber band is hung, one end of which is connected to the pushed-in molar, and the other end is connected to the occlusal mandible or the tooth on the occlusal side of the pushed-in molar to maintain the gap;

[0036] S7: Replace the custom arch wire with a nickel-titanium arch wire, and use the gap created by S6 to align and close the remaining teeth.

[0037] In step S7, a specific embodiment is to finally replace the conformable arch wire with a nickel-titanium arch wire, align the remaining front teeth, close the gaps, and form a complete tooth sequence model.

[0038] Step S5 also includes step S51: after the Nth tooth is pushed back, the N-1th tooth is pushed back, and an orthodontic nickel-titanium push spring is installed between the N-1th tooth and the N-2th tooth.

[0039] In this embodiment, considering the complexity of orthodontic situations, there may be multiple teeth pushed backward by pushing the molars, so a position replacement step of the orthodontic nickel-titanium push spring can be added after step S5. When tooth N11 needs to be pushed, the orthodontic push spring is placed between tooth N-1 and tooth N-2. Similarly, when tooth N-2 needs to be pushed, the orthodontic push spring is placed between tooth N-2 and tooth N-3 until the required gap is obtained, and then the subsequent steps are continued to obtain a complete tooth sequence model.

[0040] The step S8 is also included: after the orthodontic training operation steps S2-S7 are completed, the wax ridge is completely melted, and step S1 is performed to remake the orthodontic tooth sequence model into the deformed tooth sequence model used for training.

[0041] In this embodiment, after completing one training operation, the deformed tooth sequence model has been restored to an ordered tooth sequence model. Therefore, if the training operation needs to be practiced again, the wax ridge needs to be melted and the artificial teeth need to be rearranged into the deformed tooth sequence and then fixed to achieve the reuse of the model.

[0042] The diameter of the stainless steel round wire in step S3 is 0.018 mm.

[0043] In step S7, the nickel-titanium arch wire is first aligned and the gap is closed using nickel-titanium round wire and then nickel-titanium square wire. The wire diameter of the nickel-titanium round wire is first 0.014mm and then changed to 0.018mm. The size of the nickel-titanium square wire is 0.018mm×0.025mm.

[0044] In this embodiment, the stainless steel round wire is used as the conformable arch wire, and the nickel-titanium arch wire is used for aligning and closing the gap. The nickel-titanium round wire is first used and then the nickel-titanium square wire is used. The wire diameter of the nickel-titanium round wire is gradually increased. First, the nickel-titanium round wire with a wire diameter of 0.014mm is used, and then the nickel-titanium round wire with a wire diameter of 0.018mm is used to adapt to the change of force. Finally, the nickel-titanium square wire with a diameter of 0.018mm×0.025mm is used. The nickel-titanium round wire and square wire of the above specifications are used for aligning and closing the gap.

Claims

1. A training method for pushing molars backward to prevent tooth protrusion, characterized in that: The following steps are involved: S1: Make an artificial deformed tooth sequence model. The deformed tooth sequence model is divided into an upper tooth sequence model and a lower tooth sequence model. The deformed tooth sequence model includes a positioning template, artificial teeth, and a wax rim. The artificial teeth are installed in the positioning template according to the pre-designed deformity sequence requirements, and the melted wax rim is filled. After the wax rim solidifies, the artificial deformed tooth sequence model is obtained. S2: Arrange the fulcrum and glue the orthodontic bracket near the center of the crown; S3: Making a custom archwire: According to the fluctuations of the bracket grooves on the deformed teeth, the stainless steel round wire is bent into a custom archwire; S4: Bending point positioning. The last molar to be pushed is numbered N. The tooth number is decremented by 1 in the mesial direction and incremented by 1 in the distal direction. The bending point of the adaptable archwire is positioned at the edge of the mesial end of the orthodontic bracket. The bending points of the adaptable archwire are made in sequence from tooth N-1 to the mesial direction. A straight line segment is reserved at the distal end of tooth N. The orthodontic brackets on all teeth except the molar to be pushed are fixed and ligated. Through the connection between the bending point of the conformable archwire and the orthodontic bracket, several front teeth form a whole to push the molars backward, so that the reaction force of the nickel-titanium push spring is changed from acting solely on the front teeth to a dispersed force on several front teeth; when the last molar is pushed backward, the reaction force will be fed back to the N-1 tooth, and the N-1 tooth will transmit the force to the bending point through the orthodontic bracket. The bending point and the orthodontic bracket are stuck, and the reaction force will be transmitted to each tooth on the mesial side in turn, dispersing the reaction force; S5: Install the orthodontic nickel-titanium push spring. The nickel-titanium push spring is placed on the custom arch wire between tooth N and tooth N-1. The ratio of the arch wire length to the spring length at the part where the orthodontic push spring is placed is 1:

2. At this time, a heating device is used to heat the deformed tooth sequence model to soften the wax ridge. S6: Install rubber bands to connect the molars that have been pushed into place with the orthodontic brackets on the corresponding mandibular teeth through rubber bands to maintain the gap between the molars that have been pushed into place and the teeth that have not been pushed back; S7: Replace the custom arch wire with a nickel-titanium arch wire, and use the gap created by S6 to align and close the remaining teeth.

2. A training method for pushing molars backward to prevent tooth protrusion according to claim 1, characterized in that: Step S5 also includes step S51: after the Nth tooth is pushed back, the N-1th tooth is pushed back, and an orthodontic nickel-titanium push spring is installed between the N-1th tooth and the N-2th tooth.

3. A training method for pushing molars backward to prevent tooth protrusion according to claim 1 or 2, characterized in that: The step S8 is also included: after the orthodontic training operation steps S2-S7 are completed, the wax ridge is completely melted, and step S1 is performed to remake the orthodontic tooth sequence model into the deformed tooth sequence model used for training.

4. The training method for pushing molars backward to prevent tooth protrusion according to claim 1, characterized in that: The diameter of the stainless steel round wire in step S3 is 0.018 mm.

5. The training method for pushing molars backward to prevent tooth protrusion according to claim 1, characterized in that: In step S7, the nickel-titanium arch wire is first aligned and the gap is closed using nickel-titanium round wire and then nickel-titanium square wire. The wire diameter of the nickel-titanium round wire is first 0.014mm and then changed to 0.018mm. The size of the nickel-titanium square wire is 0.018mm×0.025mm.

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