A method for designing and manufacturing the surface structure of dental restorations imitating the enamel dentin boundary
A technology of surface structure and manufacturing method, applied in dentistry, prosthodontics, manufacturing tools, etc., can solve the problems of easy falling off of restorations, insufficient shear force, unsatisfactory effect, etc., so as to reduce micro-leakage and secondary caries. damage, reduce local stress concentration, and improve the effect of long-term success rate
Active Publication Date: 2022-02-18
PEKING UNIV SCHOOL OF STOMATOLOGY
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Problems solved by technology
[0002] Casting or subtractively manufactured dental restorations have a simple interface with the remaining natural teeth or implant abutments. In order to improve their bonding strength, sandblasting, acid etching or specially designed solidification are often required for the restoration. However, the operation is complex and cumbersome and the effect is not ideal, especially when using high-strength materials, such as zirconia. Insufficient shear force limits the clinical application of good restorative materials
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[0017] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0018] A kind of imitation enamel dentin boundary of the present invention dental restoration surface structure design manufacturing method of the present invention has the following steps:
[0019] 1) The surface of the dental restoration is divided into 2 layers, and a print file is generated with 3D printing software;
[0020] 2) The inner layer is a solid structure, and the outer layer is a gradient hollow structure whose porosity gradually increases from the inside to the outside;
[0021] 3) The porosity of the innermost layer of the hollow structure is 0, and the porosity of the outermost layer is 50-80%;
[0022] 4) The shape of the trabeculae in the pores and gaps is an enamel-like dentin boundary structure;
[0023] 5) Print and shape with a 3D printer;
[0024] 6) The material used can be pure titanium, titanium alloy, zi...
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The invention relates to a method for designing and manufacturing the surface structure of a dental prosthesis imitating the enamel dentin boundary, which comprises the following steps: the surface of the dental prosthesis is divided into two layers, and a print file is generated by using 3D printing software; the inner layer is a solid structure, The outer layer is a gradient hollow structure with gradually increasing porosity from the inside to the outside; the porosity of the innermost layer of the hollow structure is 0, and the porosity of the outermost layer is 50‑80%; the shape of the trabeculae between the pores and gaps is enamel-like dentin Boundary structure; printed by 3D printer; the material used can be pure titanium, titanium alloy, zirconia or titanium-zirconium-based amorphous metal glass; after disinfection, it can be delivered to clinical bonding repair. The invention can effectively improve the bonding performance of the restoration surface, imitate the mechanical buffering effect of the enamel-dentine boundary to a certain extent, reduce the local stress concentration under the masticatory function state, and significantly reduce the micro-infiltration of the restoration through the complex interface structure The occurrence and progress of leakage and secondary caries can be improved, and the long-term success rate of dental restorations can be improved.
Description
technical field [0001] The invention relates to a dental prosthesis imitating the enamel dentin boundary, in particular to a method for designing and manufacturing the surface structure of the dental prosthesis imitating the enamel dentin boundary. Background technique [0002] Casting or subtractively manufactured dental restorations have a simple interface with the remaining natural teeth or implant abutments. In order to improve their bonding strength, sandblasting, acid etching or specially designed solidification are often required for the restoration. However, the operation is complex and cumbersome and the effect is not ideal, especially when using high-strength materials, such as zirconia. Insufficient shear force limits the clinical application of good restorative materials. Contents of the invention [0003] The purpose of the present invention is to provide a method for designing and manufacturing the surface structure of dental restorations imitating the ename...
Claims
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IPC IPC(8): B22F5/00B28B1/00B33Y10/00A61C5/20B22F3/105
CPCB22F5/00B28B1/001A61C5/20B33Y10/00B22F10/00B22F10/20Y02P10/25
Inventor 孙玉春周永胜王勇陈虎马珂楠
Owner PEKING UNIV SCHOOL OF STOMATOLOGY