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Method for forming all-ceramic dental crown by stereolithography of zirconia ceramic slurry
The invention relates to the technical field of dental restorations, particularly to a method for forming an all-ceramic dental crown by stereolithography of zirconia ceramic slurry. The method comprises the following steps: acquiring three-dimensional data of a dental crown; according to the three-dimensional data of the dental crown, forming zirconia ceramic slurry into a green body on a supporting structure by adopting a digital light processing method; polishing to remove the supporting structure, and degreasing the green body; directly sintering the degreased green body or dyeing the degreased green body by using a dyeing solution, and then sintering to obtain the all-ceramic dental crown; and carrying out surface treatment on the sintered all-ceramic dental crown. According to the invention, zirconium oxide dental crown forming is achieved in an additive manufacturing mode, compared with a subtractive manufacturing method, materials can be saved by 90%, no dust is formed, the method is environmentally friendly, the machining process of the method is not limited by the appearance of the dental crown, and accurate forming of the dental crown with the more complex appearance canbe achieved; and no mechanical cutting exists, and the situation that the overall mechanical property of the dental crown is reduced due to micro-cracks caused by cutting is avoided.
本申请涉及口腔修复体技术领域，具体而言，涉及一种氧化锆陶瓷浆料立体光刻成型全瓷牙冠的方法。其包括以下步骤：获取牙冠的三维数据；根据牙冠的三维数据，采用数字光处理方法在支撑结构上将氧化锆陶瓷浆料成型为生坯；打磨去除支撑结构后对所述生坯进行脱脂；将脱脂后的生坯直接烧结或使用染色液对脱脂后的生坯染色后再进行烧结，制得全瓷牙冠；对烧结后的全瓷牙冠进行表面处理。通过增材制造的方式实现氧化锆牙冠成形，相对于减材制造方法可节约材料90％，且无粉尘形成，对环境友好，并且本方法的加工过程不受牙冠外形限制，可实现更复杂外形牙冠的精确成型；不存在机械切割，不会因切削引起微裂纹导致牙冠整体力学性能降低。
Method for forming all-ceramic dental crown by stereolithography of zirconia ceramic slurry
The invention relates to the technical field of dental restorations, particularly to a method for forming an all-ceramic dental crown by stereolithography of zirconia ceramic slurry. The method comprises the following steps: acquiring three-dimensional data of a dental crown; according to the three-dimensional data of the dental crown, forming zirconia ceramic slurry into a green body on a supporting structure by adopting a digital light processing method; polishing to remove the supporting structure, and degreasing the green body; directly sintering the degreased green body or dyeing the degreased green body by using a dyeing solution, and then sintering to obtain the all-ceramic dental crown; and carrying out surface treatment on the sintered all-ceramic dental crown. According to the invention, zirconium oxide dental crown forming is achieved in an additive manufacturing mode, compared with a subtractive manufacturing method, materials can be saved by 90%, no dust is formed, the method is environmentally friendly, the machining process of the method is not limited by the appearance of the dental crown, and accurate forming of the dental crown with the more complex appearance canbe achieved; and no mechanical cutting exists, and the situation that the overall mechanical property of the dental crown is reduced due to micro-cracks caused by cutting is avoided.
本申请涉及口腔修复体技术领域，具体而言，涉及一种氧化锆陶瓷浆料立体光刻成型全瓷牙冠的方法。其包括以下步骤：获取牙冠的三维数据；根据牙冠的三维数据，采用数字光处理方法在支撑结构上将氧化锆陶瓷浆料成型为生坯；打磨去除支撑结构后对所述生坯进行脱脂；将脱脂后的生坯直接烧结或使用染色液对脱脂后的生坯染色后再进行烧结，制得全瓷牙冠；对烧结后的全瓷牙冠进行表面处理。通过增材制造的方式实现氧化锆牙冠成形，相对于减材制造方法可节约材料90％，且无粉尘形成，对环境友好，并且本方法的加工过程不受牙冠外形限制，可实现更复杂外形牙冠的精确成型；不存在机械切割，不会因切削引起微裂纹导致牙冠整体力学性能降低。
Method for forming all-ceramic dental crown by stereolithography of zirconia ceramic slurry
氧化锆陶瓷浆料立体光刻成型全瓷牙冠的方法
HUANG SHIWEI (author)
2021-02-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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