Denture, reference denture, and denture manufacturing method

Patent metadata

Field	Value
Publication number	US-12232913-B2
Application number	US-202017440218-A
Country	US
Kind code	B2
Filing date	Mar 4, 2020
Priority date	Mar 28, 2019
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A denture including a denture base where artificial teeth are fixed, the denture base includes a reference denture base member to which the artificial teeth are fixed and an adjusting member formed of a cured body of a curable denture base material, the adjusting member being joined to the reference denture base member, the adjusting member includes an anterior adjusting member that is joined to a mucosal surface of a base anterior region to form an anterior region together with the base anterior region, and a posterior adjusting member that is joined to a mucosal surface of a base posterior region to form a posterior region together with the base posterior region, and at least parts of base edge side distal end regions in the anterior region and the posterior region are formed of the anterior adjusting member and the posterior adjusting member, respectively.

First claim

The invention claimed is:

1. A production method for a denture, comprising:
(A) a reference denture preparation step of preparing a reference denture serving as a reference denture member including a reference denture base member and artificial teeth;
(B) a reference denture determination step of determining a shape of the reference denture to be used by (1) inserting the reference denture into an oral cavity of a patient, aligning the reference denture with respect to an occlusal plane of the patient, and then checking a contact state between a mucosa in the oral cavity of the patient and the reference denture or (2) inserting the reference denture into an articulator having a patient oral cavity model attached thereto, aligning the reference denture with respect to an occlusal plane of the patient oral cavity model, and then checking a contact state between the patient oral cavity model and the reference denture, selecting, in a case of an inappropriate contact, to return to (A) the reference denture preparation step for preparing a new reference denture having another shape that does not cause the inappropriate contact or finely adjusting a shape of the reference denture base member of the reference denture so as to prevent the inappropriate contact;
(C1) a central building and transfer step of placing a curable denture base material in an uncured state for forming an adjusting member on a base central region of a mucosal surface of the reference denture base member of the reference denture selected in the reference denture determination step, then aligning the reference denture having the curable denture base material thereon with respect to (a) the occlusal plane of the patient or (b) the occlusal plane of the patient oral cavity model at the articulator, and transferring a mucosal shape of the oral cavity of the patient or a shape of the patient oral cavity model onto the curable denture base material;
(C2) an anterior building and transfer step of placing a curable denture base material in an uncured state for forming an adjusting member on a base anterior region of the mucosal surface of the reference denture base member of the reference denture selected in the reference denture determination step, then aligning the reference denture having the curable denture base material thereon with respect to (a) the occlusal plane of the patient or (b) the occlusal plane of the patient oral cavity model at the articulator, and transferring a mucosal shape of the oral cavity of the patient or a shape of the patient oral cavity model onto the curable denture base material and simultaneously extending the curable denture base material from a denture border of the base anterior region to form a margin in an anterior region of the denture to remove excess curable denture base material;
(C3) a posterior building and transfer step of placing a curable denture base material in an uncured state for forming an adjusting member on a base posterior region of the mucosal surface of the reference denture base member of the reference denture selected in the reference denture determination step, then aligning the reference denture having the curable denture base material thereon with respect to (a) the occlusal plane of the patient or (b) the occlusal plane of the patient oral cavity model at the articulator, and transferring a mucosal shape of the oral cavity of the patient or a shape of the patient oral cavity model onto the curable denture base material and simultaneously extending the curable denture base material from the denture border of the posterior region to form a margin in a posterior region of the denture to remove excess curable denture base material;
(D1) a first curing step of curing the curable denture base material used in the central building and transfer step (C1) after performing the central building and transfer step (C1),
(D2) a second curing step of curing the curable denture base material used in the anterior building and transfer step (C2) after performing the anterior building and transfer step (C2), and
(D3) a third curing step of curing the curable denture base material used in the posterior building and transfer step (C3) after performing the posterior building and transfer step (C3),
wherein, after the central building and transfer step (C1) is performed, the anterior building and transfer step (C2) and the posterior building and transfer step (C3) are performed simultaneously or individually, and
wherein the first curing step, the second curing step and the third curing step are performed individually, or at least two steps selected from the group consisting of the first curing step, the second curing step and the third curing step are performed simultaneously.

2. The production method for the denture according to claim 1 , further comprising, after completion of the anterior building and transfer step and the posterior building and transfer step, a wash step of adding additional curable denture base material in an uncured state onto a surface on a mucosal surface side of the reference denture base member to correct a shape of the surface on the mucosal surface side.

Assignees

• Tokuyama Dental Corp

Inventors

• TOYODA Mana
• Gyakushi Ayumu
• Yamazaki Tatsuya

Classifications

• A61C13/0024

  Repairing or adjusting dentures; Location of irritating zones · CPC title

• A61C13/1003 Primary

  by embedding in base material · CPC title

• A61C13/097

  characterised by occlusal profiles {, i.e. chewing contact surfaces} · CPC title

• A61C11/081

  with adjusting means thereof · CPC title

• A61C13/10

  Fastening of artificial teeth to denture palates or the like {(A61C8/0048 takes precedence)} · CPC title