Righting device for mesial inclined molar of upper jaw

Abstract

The utility model provides an upper jaw mesial inclined molar centralizing device which is characterized in that a palate support (1) is connected with a bow arm (2), two end parts of the bow arm (2) are respectively connected with at least one anchorage tooth lantern ring (3), the end part of the bow arm (2) on one side of an inclined molar (4) extends to form an extension section (2a), the extension section (2a) is positioned on the outer side of the inclined molar (4), and an S-shaped hook head part (5) is arranged at the tail end of the extension section (2a). A group of hook parts (6) are also arranged on the extension section (2a); and an elastic traction belt (7) which is hooked with any tongue side buckle (4a) on the inclined molar (4) is hooked on the hook parts (6) or the hook head parts (5). The traction device has the advantages of simple structure, convenience in use, adjustable traction angle and force value, exact curative effect, high comfort level, no need of matching of patients and the like.

Description

Technical Field

[0001] The utility model relates to the field of oral cavity, in particular to a device for straightening maxillary mesial tilted molars. Background Art

[0002] Ectopic eruption of the first permanent molar refers to the deviation of the eruption path of the first permanent molar from the normal position during the eruption process. It is a local eruption disorder characterized by impaction below the distal marginal ridge of the second deciduous molar and inability to erupt to the apical plane. The first permanent molar is called the key to apical eruption. If the ectopic impaction is not discovered and treated in time, it may cause dislocation, impaction, and crowding of the second premolar, resulting in malocclusion. The ectopic eruption of the first permanent molar will also affect the root of the second deciduous molar, followed by pathological absorption of the root. In severe cases, it may cause the premature loss of the second deciduous molar, the mesial displacement of the first permanent molar, and ultimately crowding of the upper dentition.

[0003] Ectopic eruption of the first permanent molar often occurs in the maxilla. Correcting the mesial tilted maxillary first permanent molar and blocking ectopic eruption are the most acceptable treatment methods for doctors and the patients' families in clinical practice. This treatment method can correct the mesial tilted first permanent molar to its normal position at an early stage, protect the adjacent second deciduous molar, preserve the integrity of the dentition to the greatest extent possible, and maintain the chewing function of the patient. There are many methods for correcting the ectopic eruption of the maxillary first permanent molar. Commonly used methods include: (1) tooth separation method, such as using copper wire, tooth separation ring or tooth separation spring to separate the teeth; (2) segment bow method, using nickel-titanium push spring between the second deciduous molar and the first permanent molar to push the first permanent molar distally; (3) ectopic eruption induction appliance, which is made by welding an eruption guide plate to the distal part of the second deciduous molar with a ring, and achieves the effects of tooth separation and eruption guidance at the same time.

[0004] However, the previous methods for treating ectopic eruption of maxillary first molars still have many shortcomings:

[0005] Because the ectopically erupted first permanent molar is too mesial and cannot erupt to the interproximal plane, the tooth separation device cannot enter the interproximal space, or it may cause periodontal damage after entering. Moreover, after successful tooth separation using a dividing ring, the first permanent molar may be locked again under the distal ridge of the second deciduous molar, resulting in treatment failure.

[0006] The treatment of the mesial tilted maxillary first permanent molar should be induced to move distally, while the adjacent second deciduous molar crown has no or only a small amount of mesial tilting. However, when using the segmental arch technique, the reaction force of the correction will cause the deciduous molar to move forward, and the anchorage is difficult to control, making it difficult to achieve the expected effect.

[0007] The fixed adjustable straightening device for mesial tilting of the first molar has the advantage of using the two adjacent deciduous molars and the first and second deciduous molars on the opposite side as support teeth, reducing the force on the adjacent teeth alone, and avoiding the adjacent teeth from tilting towards the gap and buccal and lingual directions compared to the segmental arch technology. At the same time, the traction force value and direction are adjustable to reduce the risk of root absorption. The disadvantage is that during the period of tooth replacement, deciduous molars often suffer from large-scale loss of tooth tissue due to caries, and in this case, the deciduous molars cannot provide sufficient retention for this device. Utility Model Content

[0008] The utility model provides a device for correcting maxillary mesial tilted molars in order to overcome the deficiencies in the prior art.

[0009] This application provides the following technical solutions:

[0010] A device for straightening maxillary mesial tilted molars, comprising a palatal support, a bow arm connected to the palatal support, at both ends of the bow arm being connected to at least one support tooth ring, characterized in that: an extension section extends from the end of the bow arm on the side of the tilted molar to be treated, the extension section surrounds the outside of the tilted molar and forms an approximately hook-shaped appearance, an S-shaped hook head is provided at the tail end of the extension section, a group of hook parts are also provided on the extension section, and an elastic traction belt is hung on the hook part or the hook head to form a hook with at least one lingual buckle on the tilted molar.

[0011] On the basis of the above technical solutions, there are also the following further technical solutions:

[0012] Two support tooth rings are connected to the ends of both ends of the bow arm.

[0013] The extension section is located at the inner side of the dentition.

[0014] The group of hook parts are distributed in sequence along the extension section.

[0015] The support brace ring, bow arm, extension section, hook part and hook head part are made of medical stainless steel.

[0016] The elastic traction belt is an annular elastic belt.

[0017] Utility model advantages:

[0018] The utility model has the advantages of simple structure, convenient use, adjustable traction angle force value, accurate therapeutic effect, high comfort, no need for patient cooperation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model when it is used;

[0020] Figure 2 It is a side schematic diagram of the utility model when in use. DETAILED DESCRIPTION

[0021] like Figure 1 and 2 As shown, a correction device for maxillary mesial tilted molars comprises a palatal support 1, to which an arch arm 2 is connected. The arch arm 2 is a Nance arch in the prior art. Two support tooth rings 3 are connected to the ends of the arch arm 2, which are used to be placed on the first and second support teeth 8 and 9, so as to enhance the support of the correction device.

[0022] An extension section 2a extends from the end of the arm 2 on one side of the tilted molar 4 to be treated. The extension section 2a is located on the inner side of the dentition.

[0023] An arc section is provided at the tail end of the extension section 2a, so that the extension section 2a surrounds the outer side and rear side of the inclined molar 4 to form an approximately hook-shaped appearance.

[0024] An S-shaped hook head 5 is provided at the tail end of the extension section 2a, and the end of the hook head 5 extends beyond the outside of the tooth row. A group of hook parts 6 are also fixedly connected to the extension section 2a. The group of hook parts 6 are distributed in sequence along the extension section 2a, and their extending directions are different.

[0025] The support brace ring 3, the bow arm 2, the extension section 2a, the hook portion 6 and the hook head portion 5 are made of medical stainless steel.

[0026] At least one lingual buckle 4a is selected to be connected to the tilted molar 4 according to the posture of the tilted molar 4 to be treated, and an elastic traction belt 7 is hung between the lingual buckle 4a and any hook part 6 or between the lingual buckle 4a and the hook head part 5. The elastic traction belt 7 is an annular elastic belt made of medical rubber, and can also be a sterilized rubber band. The tilted molar is pulled to grow in the normal direction by the elastic traction of the elastic traction belt.

[0027] According to the position of the tilted molar 4 observed during the treatment cycle, the doctor will selectively adjust the hook portion 6 to which the elastic traction belt 7 is specifically attached, or change the position of the lingual buckle 4a, until the tilted molar 4 is pulled to a normal growth position. In addition, during the treatment, the doctor can also choose to use multiple lingual buckles 4a and multiple elastic traction belts 7 at the same time to perform multi-directional traction treatment.

Claims

1. A device for correcting maxillary mesial tilted molars, comprising a palatal support (1), a bow arm (2) connected to the palatal support (1), at least one support tooth ring (3) connected to both ends of the bow arm (2), characterized in that: An extension section (2a) extends from the end of the bow arm (2) on one side of the tilted molar (4) to be treated. The extension section (2a) surrounds the outside of the tilted molar (4) to form a hook-like shape. An S-shaped hook head (5) is provided at the tail end of the extension section (2a). A group of hook parts (6) are also provided on the extension section (2a). An elastic traction belt (7) is hung on the hook part (6) or the hook head (5) to form a hook with at least one lingual buckle (4a) on the tilted molar (4).

2. A device for correcting maxillary mesial tilted molars according to claim 1, characterized in that: Two support tooth rings (3) are connected to the ends of both ends of the bow arm (2).

3. A device for correcting maxillary mesial tilted molars according to claim 1, characterized in that: The extension section (2a) is located on the inner side of the dentition.

4. A device for correcting maxillary mesial tilted molars according to claim 1, characterized in that: The group of hook portions (6) are distributed in sequence along the extension section (2a).

5. The device for correcting maxillary mesial tilted molars according to claim 1, characterized in that: The support tooth ring (3), the bow arm (2), the extension section (2a), the hook portion (6) and the hook head portion (5) are made of medical stainless steel.

6. The device for correcting maxillary mesial tilted molars according to claim 1, characterized in that: The elastic traction belt (7) is an annular elastic belt.

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