阅读说明：本技术 三重刚性约束和引导的牙体预备导板的数字化制备方法 (Digital preparation method of tooth preparation guide plate with triple rigid constraint and guide ) 是由 叶红强 孙玉春 周永胜 白鹤飞 王勇 刘云松 陈虎 李忠义 于 2020-05-27 设计创作，主要内容包括：本发明的一种三重刚性约束和引导的牙体预备导板的数字化制备方法,有以下步骤：(1)三维扫描获取三维待预备牙齿数字模型；(2)数字化设计牙体预备导板：1)设计能够贴合待预备牙齿数字模型的牙体预备导板固位体；2)牙体预备导板固位体上端部设置约束和引导轨道；3)所述约束和引导结构1设有引导面；4)所述约束和引导结构2设有两个平行相对的平面；5)在牙体预备导板固位体下端部设置约束和引导结构3；(3)数字化制作牙体预备导板：用三维打印的方法,打印牙体预备导板。本发明能高效率数字化设计和制作牙体预备导板,能限制车针运动时的龈向深度,约束和引导车针的三维运动,能实现快速、准确和简便的牙体预备,并避免创伤。(The invention relates to a digital preparation method of a triple rigid constraint and guide tooth preparation guide plate, which comprises the following steps: (1) three-dimensional scanning to obtain a three-dimensional digital model of the tooth to be prepared; (2) digitally designing a tooth preparation guide plate: 1) designing a tooth body preparation guide plate retainer which can be attached to a digital model of teeth to be prepared; 2) the upper end part of the tooth preparation guide plate retainer is provided with a restraining and guiding track; 3) the structure 1 is provided with a guide surface; 4) the constraining and guiding structure 2 is provided with two parallel opposite planes; 5) a restraining and guiding structure 3 is arranged at the lower end part of the tooth body preparation guide plate retainer; (3) digitally manufacturing a tooth preparation guide plate: the tooth body preparation guide plate is printed by a three-dimensional printing method. The invention can digitally design and manufacture the tooth preparation guide plate with high efficiency, can limit the gingival depth when the machine needle moves, restrain and guide the three-dimensional movement of the machine needle, can realize rapid, accurate and simple tooth preparation, and avoids trauma.)

1. A digital preparation method of a tooth body preparation guide plate with triple rigid constraint and guide is characterized by comprising the following steps:

(1) three-dimensional scanning to obtain a three-dimensional digital model of the tooth to be prepared;

(2) digitally designing a tooth preparation guide plate: 1) designing a tooth body preparation guide plate retainer which can be attached to a digital model of teeth to be prepared; 2) the upper end part of the tooth body preparation guide plate retainer is provided with a restraining and guiding track, the restraining and guiding track is of a three-dimensional structure with a rectangular middle part and circular arc-shaped two ends, the side surface of the restraining and guiding track is provided with an opening for the entering and exiting of a needle, the upper surface of the restraining and guiding track is a restraining and guiding structure 1, and the inner side surface of the restraining and guiding track is a restraining and guiding structure 2; 3) the structure 1 is provided with a guide surface, which is in contact withThe planes are parallel and are attached to the dental turbine handpiece provided with the lathe needle, so that the gingival depth of the lathe needle during movement can be limited; 4) the constraining and guiding structure 2 is provided with two parallel opposite planes and is located at the same height as

(3) digitally manufacturing a tooth preparation guide plate: the tooth body preparation guide plate is printed by a three-dimensional printing method.

2. A digital preparation method of a tooth body preparation guide plate with triple rigid constraint and guide is characterized in that: the dental preparation guide can be made as a conjoined dental preparation guide comprising several constraint and guide rails and constraint and guide structures 3 depending on the structure of the tooth, wherein the several constraint and guide rails and constraint and guide structures 3 can be of the same or different sizes.

Technical Field

The invention relates to a design and manufacturing method of a dental guide plate, in particular to a digital manufacturing method of a tooth body preparation guide plate with triple rigid constraint and guide.

Background

In the oral restoration, tooth preparation is often carried out, at present, the tooth preparation is carried out in a free-hand mode in clinic, the preparation precision and efficiency depend on the experience of dentists and the clinical operation level, and the high-quality tooth preparation is particularly difficult under the conditions that the intraoral space is limited and an operator is difficult to directly view. The tooth preparation guide plate can solve the defects of the free hand preparation, and improve the quality, precision and efficiency of tooth preparation. An ideal dental preparation guide plate needs to limit the gingival depth of the needle during movement, completely restrict and guide the movement of the needle, and avoid accidentally injuring surrounding soft and hard tissues.

Disclosure of Invention

The invention aims to provide a digital preparation method of a tooth preparation guide plate with triple rigid constraint and guide, which can digitally design and manufacture the tooth preparation guide plate with high efficiency and can limit the movement of a machine needle

The gum depth, the rigid restraint and the guide of the movement of the machine needle can improve the precision and the efficiency of tooth preparation and avoid injuring surrounding soft and hard tissues by mistake.

In order to achieve the purpose, the invention has the following technical scheme:

the invention relates to a digital preparation method of a triple rigid constraint and guide tooth preparation guide plate, which comprises the following steps:

(1) three-dimensional scanning to obtain a three-dimensional digital model of the tooth to be prepared;

(2) digitally designing a tooth preparation guide plate: 1) designing a tooth body preparation guide plate retainer which can be attached to a digital model of teeth to be prepared; 2) the upper end part of the tooth body preparation guide plate retainer is provided with a restraining and guiding track, the restraining and guiding track is of a three-dimensional structure with a rectangular middle part and circular arc-shaped two ends, the side surface of the restraining and guiding track is provided with an opening for the entering and exiting of a needle, the upper surface of the restraining and guiding track is a restraining and guiding structure 1, and the inner side surface of the restraining and guiding track is a restraining and guiding structure 2; 3) the structure 1 is provided with a guide surface, which is in contact with

The planes are parallel and are attached to the dental turbine handpiece provided with the lathe needle, so that the gingival depth of the lathe needle during movement can be limited; 4) the constraining and guiding structure 2 is provided with two parallel opposite planes and is located at the same height as

The planes are vertical and parallel to the long axis of the machine needle, and the smooth part of the neck of the machine needle moves between the two planes and can restrict and guide the movement of the machine needle at the smooth part of the neck of the machine needle; 5) a restraining and guiding structure 3 is arranged at the lower end part of the tooth preparation guide retainer, the restraining and guiding structure 3 is provided with a restraining and guiding body, a first parallel plane and a second parallel plane, wherein the restraining and guiding body is positioned below the restraining and guiding track, and the first parallel plane is connected with the restraining and guiding body and is connected with the restraining and guiding body

A second parallel plane connected to the constraining and guiding body and corresponding to the neck of the digital dental model, the first and second parallel planes being parallel to each otherA parallel plane and

the plane is vertical and parallel to the long axis of the needle, but the two parallel planes are not at the same height, and the two parallel planes are positioned at one side of the tip end of the needle;

(3) digitally manufacturing a tooth preparation guide plate: the tooth body preparation guide plate is printed by a three-dimensional printing method.

Wherein the dental preparation guide can be made as a conjoined dental preparation guide comprising several constraint and guide rails and constraint and guide structures 3 depending on the structure of the tooth, wherein the several constraint and guide rails and constraint and guide structures 3 can be of the same or different sizes.

The invention has the advantages that:

capable of digitally designing and manufacturing tooth preparation guide plate with high efficiency and limiting movement of needleThe gum depth, the rigid restraint and the guide of the movement of the machine needle can improve the precision and the efficiency of tooth preparation and avoid injuring surrounding soft and hard tissues by mistake.

Drawings

FIG. 1 is a schematic cross-sectional view of a dental preparation guide of the present invention.

FIG. 2 is an enlarged schematic view of the constraining and guiding structure 1 of the present invention;

FIG. 3 is an enlarged schematic view of the constraining and guiding structure 2 of the present invention;

fig. 4 is an enlarged schematic view of the constraining and guiding structure 3 of the present invention.

In the figure, 1, a dental turbine handpiece; 2. emery needle lathing; 3. preparing a tooth digital model; 4. a tooth preparation guide plate; 5. a constraining and guiding structure 1; 6. a constraining and guiding structure 2; 7. a constraining and guiding structure 3; 8. a guide surface; 9. an opposing planar surface; 10. a first parallel plane; 11. a second parallel plane.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to FIGS. 1-4:

the invention relates to a digital preparation method of a triple rigid constraint and guide tooth preparation guide plate, which comprises the following steps:

(1) three-dimensional scanning to obtain a three-dimensional digital model of the tooth to be prepared;

(2) digitally designing a tooth preparation guide plate: 1) designing a tooth body preparation guide plate retainer which can be attached to a digital model of teeth to be prepared; 2) the upper end part of the tooth body preparation guide plate retainer is provided with a restraining and guiding track, the restraining and guiding track is of a three-dimensional structure with a rectangular middle part and circular arc-shaped two ends, the side surface of the restraining and guiding track is provided with an opening for the entering and exiting of a needle, the upper surface of the restraining and guiding track is a restraining and guiding structure 1, and the inner side surface of the restraining and guiding track is a restraining and guiding structure 2; 3) the structure 1 is provided with a guide surface, which is in contact with

The planes are parallel and are attached to the dental turbine handpiece provided with the lathe needle, so that the gingival depth of the lathe needle during movement can be limited; 4) the constraining and guiding structure 2 is provided with two parallel opposite planes and is located at the same height asThe planes are vertical and parallel to the long axis of the machine needle, and the smooth part of the neck of the machine needle moves between the two planes and can restrict and guide the movement of the machine needle at the smooth part of the neck of the machine needle; 5) a restraining and guiding structure 3 is arranged at the lower end part of the tooth preparation guide retainer, the restraining and guiding structure 3 is provided with a restraining and guiding body, a first parallel plane and a second parallel plane, wherein the restraining and guiding body is positioned below the restraining and guiding track, and the first parallel plane is connected with the restraining and guiding body and is connected with the restraining and guiding bodyA second parallel plane connected to the constraining and guiding body and corresponding to the neck of the digital dental model, the first parallel plane being parallel to the second parallel plane, the two parallel planes being parallel to the neck of the digital dental model

The plane is vertical and parallel to the long axis of the needle, but the two parallel planes are not at the same height, and the two parallel planes are positioned at one side of the tip end of the needle;

(3) digitally manufacturing a tooth preparation guide plate: the tooth body preparation guide plate is printed by a three-dimensional printing method. The printing material includes: cobalt chromium alloy, titanium alloy or resin. Three-dimensional printing resin brand list three-dimensional printing resin brand:

1. VeroWhite photocurable resin from Stratasys, USA;

2. e-model Light photocurable resin from Envisiontec, Germany;

three-dimensional printing of metal brands:

1. titanium and its alloys: AMC-Ti Cp titanium powder of Beijing Zhonghangmai powder metallurgy technology Limited;

2. cobalt chromium alloy: metcoadd 78A cobalt chromium alloy powder from Oerlikon, Switzerland;

but not limited to, the brand of printed material above.

The dental preparation guide can be made as a conjoined dental preparation guide comprising several constraint and guide rails and constraint and guide structures 3 depending on the structure of the tooth, wherein the several constraint and guide rails and constraint and guide structures 3 can be of the same or different sizes. Figure 1 of the present invention is a conjoined dental preparation guide comprising two restraining and guiding tracks, restraining and guiding structures 3, an embodiment of a dental preparation guide that can be used on two teeth.

The three-dimensional software used in the invention: reverse engineering by Raindrop corporation of the united states, using the software Geomagic 2012, andthree-dimensional detection software, but is not limited to such software. Also Imageware (Siemens PLMSofware, Germany), Magics (Materialise, Belgium) software(occlusion), also known as occlusion, refers to the static contact relationship between upper and lower dentition.

The dental turbine handpiece is a high speed turbine dental handpiece.

As described above, the present invention can be more fully realized. The above description is only a reasonable embodiment of the present invention, and the scope of the present invention includes but is not limited to the above description, and any insubstantial modifications of the technical solution of the present invention by those skilled in the art are included in the scope of the present invention.