Individualized abutment-crown integration provisional prosthesis and preparation method and application thereof

Abstract

The invention discloses an individualized abutment-crown integration provisional prosthesis. The provisional prosthesis comprises a tooth crown and a titanium base, wherein the tooth crown is bonded to the titanium base integrally; and a gum penetrating outline of the provisional prosthesis is in harmony with that of a natural tooth. The invention also discloses a preparation method and application of the individualized abutment-crown integration provisional prosthesis. The ideas of transplanting individualized aesthetic repairing and digital repairing are combined, the individualized abutment-crown integration provisional prosthesis which is suitable for an individual patient and is in harmony with the gum penetrating outline of the natural tooth is manufactured through digitization mirror image technical design; after an implant is transplanted for 3-6 months and stable synostosis is achieved, the provisional prosthesis is placed on a dental implant for parenchyma moulding on the aesthetic region implant periphery to obtain the individualized and aesthetic implant periphery parenchyma form, and ideal tooth implantation and repairing aesthetic effect is achieved.

Description

technical field [0001] The invention relates to the technical field of aesthetic restoration of dental implants, in particular to a personalized abutment-crown integrated temporary restoration and its preparation method and application. Background technique [0002] At present, the dental implant restoration treatment for patients with dentition defects in the aesthetic zone usually includes three main steps: (1) one-stage surgery to place the implant; (2) two-stage surgery after 3-6 months of implant placement, exposing Implant sealing screws and replace them with finished healing abutments or handmade implant-supported temporary crowns for soft tissue shaping around the implants; (3) After 3-4 months of soft tissue shaping, take an impression to make permanent abutments and Crown restoration and fix it on the upper implant to complete the dental implant restoration treatment. The second-stage surgery and subsequent soft tissue shaping is an important intervention in the a...

AI Technical Summary

Problems solved by technology

[0003] At present, the following two methods are usually used for soft tissue shaping around implants: ①The finished healing abutment is used for soft tissue shaping, but the shape of the implant cuff formed after shaping is single, and the shape and size are different from the natural tooth through gingival contour. Larger, it is difficult to match the individual gingiva shape of the patient, and cannot achieve the best soft tissue aesthetic effect, and the patient cannot wear a suitable crown restoration in the edentulous area during the shaping period, which affects the appearance and pronunciation; when the diameter of the gingival part is smaller than the natural When the finished healing abutment of the neck diameter of the corresponding part of the tooth is used, because it cannot well support the soft tissue around the implant, the edge of the soft tissue after shaping is located on the coronal side of the natural tooth gingiva, resulting in insufficient axial length of the crown after the final restoration. Unsightly curve of dentition and gums

However, when the diameter of the gingival part of the finished healing abutment is greater than the diameter of the natural tooth neck, the soft tissue will shrink excessively after shaping, and the edge will be located at the root of the natural tooth gingiva, resulting in the axial length of the crown after the final restoration is completed, and the gingival curve will be uncoordinated ,Affect the appearance

The shape of the finished healing abutment is very different from that of the natural tooth neck, and the shape is single and lacks diversity: for example, the shape of the finished upper anterior tooth healing abutment is cylindrical or conical, and the cross section is circular, which is similar to the natural upper anterior tooth neck. The cross-sectional shape of the irregular circular triangle in the center is very different, and it is difficult to achieve the ideal soft tissue shaping effect around the implant.

Moreover, the finished healing abutments are mostly made of titanium and titanium alloys, and it is difficult to change the shape and obtain the gingival shape consistent with natural teeth.

②Manually pile plastic resin on the temporary abutment to form a temporary crown. Compared with the finished healing abutment, this method can achieve a more ideal gingival shaping effect. Dismantling the temporary crown and adjusting its transgingival contour at the chairside increases the number of visits of patients, and the repeated removal of the temporary crown will easily affect the healing of the soft tissue of the perforating cuff and cause pain and discomfort for the patient. The monomers released by the resin and the difficulty in polishing the surface of the temporary crown after modification will irritate the local soft tissue and affect its health

This method can obtain a personalized gingival contour to a certain extent, but due to the lack of crowns, it will affect the patient's appearance and pronunciation during shaping, especially because there is no adjacent relationship with adjacent teeth, and it cannot form a confrontation with adjacent teeth during shaping The extrusion effect of the soft tissue in the gingival space makes it difficult to reconstruct the missing gingival papilla in the edentulous area. After repair, it is easy to leave a "black triangle" in the anterior gingival space, and the most ideal soft tissue aesthetic effect cannot be obtained.

Images