It is suitable for post-and-core integrated crowns with less than 3mm restoration space of posterior teeth and gums

Abstract

The present invention provides a plug-type post-core integrated crown suitable for occlusal and gingival restorations of posterior teeth with a space less than 3mm, including a main body, a plug channel, and a plug. The main body includes a crown and a pulp cavity, and the crown restores the shape and occlusion of the affected tooth. Covering and enveloping the affected tooth preparation; the pulp cavity is located in the pulp cavity of the affected tooth, which matches the shape of the pulp cavity and obtains the retention force. The plug protrudes through the plug channel of the main body into the prepared post canal in the root canal to obtain retention . This type of post-and-core integrated crown is suitable for the occlusal and gingival repair space of posterior teeth less than 3mm. It has the advantages of good retention, no need to adjust and grind the opposing teeth, less damage, and good aesthetics. It provides a good treatment for this type of patients. The new type of restoration is used for the restoration of tooth defects, especially for the restoration of posterior teeth where the occlusal and gingival space is too small to apply conventional crown restoration and post-core + crown restoration.

Description

technical field [0001] The invention relates to the field of restoration of tooth defects in prosthodontics, in particular to a tooth restoration suitable for posterior tooth restoration A plug-in post-core integrated crown with a gingival space of less than 3 mm and a manufacturing method thereof. Background technique [0002] Tooth defects caused by caries, trauma, etc. are common and frequently-occurring diseases in dental restoration clinics. Residual roots and residual crowns belong to the category of severe tooth defects. Due to the lack of the retention shape required for crown restoration, it is necessary to restore the shape of the abutment tooth with a post-core to provide sufficient retention force, that is, the post-core crown restoration method. [0003] Compared with full crowns, the post-core + crown restoration method improves the retention rate of residual roots and residual crowns. However, there is a class of clinical cases in which the tooth defect of ...

AI Technical Summary

Problems solved by technology

However, there is a class of clinical cases in which the tooth defect of the patient’s posterior teeth is an indication for post-core crown restoration, but the affected tooth The gingival repair space is less than 3mm, and the posterior teeth are tightly occluded

However, this treatment method is traumatic, expensive, and requires many visits. In particular, crown lengthening surgery leads to shortening of the actual root length in the bone, and root canal treatment leads to a decline in tooth strength and other issues that may cause long-term complications. Patients are often difficult to accept

[0006] iii. The tooth should be restored to shape Although the height of the gingiva is less than 3mm, it is almost the same. Patients who can use auxiliary retainer design and other methods for post-core crown restoration can only use metal casting restorations. For patients with high aesthetic requirements and special inspection of nearby tissues Can't apply

However, the study also found that the pulp cavity-retaining crown relies on the pulp cavity and the part extending to the root canal to provide the retention shape. Since it is not connected with the root as a whole, it is easy to recover in cases with weak tooth tissue or when the force is uneven. crown fold

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