Provided herein is a method of making a flexible partial denture, which may include: (a) producing a partial denture base by additive manufacturing (e.g., bottom-up or top-down stereolithography) from a dual cure resin, with the dual cure resin comprising a light polymerizable component and a heat polymerizable component, with the denture base including at least one tooth socket; (b) inserting an acrylic artificial tooth into each at least one tooth socket to produce an assembled intermediate product; and then (c) baking said assembled intermediate product for a time sufficient to cure said heat polymerizable component in said denture base and retained dual cure resin, bond said tooth into each at least one socket with said retained dual cure resin, and produce said flexible partial denture. A flexible partial denture produced and resin formulations useful for the same are also provided.

A removable partial denture comprises a frame sized and shaped to conform to a mouth inner surface, the frame including a projecting mounting structure; and a segment having a slot for slidably receiving the projecting mounting structure when the segment is assembled to the frame. A method of fabricating a removable partial denture comprises: acquiring 3D digital image data of a patient's mouth and dentition; creating a 3D digital model of a removable partial denture; fabricating a frame shaped to conform to an inner surface of the mouth from the 3D digital model, the frame including a mounting structure; fabricating a segment from the 3D digital model, the segment having a slot for slidably receiving the mounting structure; and inserting the mounting structure of the frame into the slot of the segment to assemble the segment to the frame. The segment can be a tooth segment or a base segment.

A removable partial denture comprises a frame sized and shaped to conform to a mouth inner surface, the frame including a projecting mounting structure; and a segment having a slot for slidably receiving the projecting mounting structure when the segment is assembled to the frame. A method of fabricating a removable partial denture comprises: acquiring 3D digital image data of a patient's mouth and dentition; creating a 3D digital model of a removable partial denture; fabricating a frame shaped to conform to an inner surface of the mouth from the 3D digital model, the frame including a mounting structure; fabricating a segment from the 3D digital model, the segment having a slot for slidably receiving the mounting structure; and inserting the mounting structure of the frame into the slot of the segment to assemble the segment to the frame. The segment can be a tooth segment or a base segment.

A method is provided for designing and fabricating a removable partial denture (RPD) framework including clasp retainers configured for removable engagement with abutment teeth of a patient. The method includes obtaining an initial digital model of the RPD framework based on patient image data. For each clasp retainer, a set of relevant geometric parameters is identified, each relevant geometric parameter being provided with a nominal value, and a target value of dislodging force is provided. The method further includes performing a force analysis on the initial digital model to determine corrected values for the relevant geometric parameters of each clasp retainer such that when the corrected values are assigned to the relevant geometric parameters, the dislodging force matches its target value. The method also includes obtaining a corrected digital model based on the corrected values, and fabricating the RPD framework based on the corrected digital model.

A method is provided for designing and fabricating a removable partial denture (RPD) framework including clasp retainers configured for removable engagement with abutment teeth of a patient. The method includes obtaining an initial digital model of the RPD framework based on patient image data. For each clasp retainer, a set of relevant geometric parameters is identified, each relevant geometric parameter being provided with a nominal value, and a target value of dislodging force is provided. The method further includes performing a force analysis on the initial digital model to determine corrected values for the relevant geometric parameters of each clasp retainer such that when the corrected values are assigned to the relevant geometric parameters, the dislodging force matches its target value. The method also includes obtaining a corrected digital model based on the corrected values, and fabricating the RPD framework based on the corrected digital model.

Techniques for producing removable partial dentures (RPDs) through additive fabrication are described. According to some aspects, techniques are described by which a denture base may be additively fabricated in several separate portions and combined with a frame to form a completed denture base without the use of a refractory model. The denture base portions may be combined with a frame that was also produced through additive fabrication, or with a frame produced through traditional techniques. By creating an RPD through additive manufacturing it may be possible to eliminate many of the manual fabrication steps requiring highly-skilled and technical labor. This may reduce the total skilled labor time required in the production of RPDs, and/or may allow for repeatable and consistent results.

The present invention provides a shape-memory alloy including a AuCuAl alloy having 20 at % or more and 40 at % or less Cu and 15 at % or more and 30 at % or less Al, with the balance being Au and inevitable impurities. The shape-memory alloy has a Vickers hardness of 360 Hv or less. The AuCuAl alloy of the present invention is an alloy capable of developing both biocompatibility and a shape-memory effect, and further capable of achieving artifactlessness in a magnetic environment. The AuCuAl alloy can be produced by heat-treating a clad material formed of a combination of a hollow material made of a AuCu alloy and a core material made of metallic Al at 500 C. or more and 700 C. or less.

The present invention provides an artificial tooth comprising a plurality of internal crown members, a plurality of connecting rods, at least one external crown member, at least one spring clip. The internal crown members are respectively fitted to a plurality of abutments. Each of the connecting rods connects to at least two of the internal crown members. The external crown member has at least one groove therein, and the groove is formed to correspond to the internal crown members. The spring clip clamps a protrusion block formed on the internal crown members or on an adjacent tooth. Further, the spring clip comprises two spring arms opposite each other, and each of two spring arms has a fixed end and a movable end opposite to fixed end. Each of two spring arms connects to the fixed end and the movable end, and fixed end is fixed inside the internal crown members.

The present invention provides an artificial tooth comprising a plurality of internal crown members, a plurality of connecting rods, at least one external crown member, at least one spring clip. The internal crown members are respectively fitted to a plurality of abutments. Each of the connecting rods connects to at least two of the internal crown members. The external crown member has at least one groove therein, and the groove is formed to correspond to the internal crown members. The spring clip clamps a protrusion block formed on the internal crown members or on an adjacent tooth. Further, the spring clip comprises two spring arms opposite each other, and each of two spring arms has a fixed end and a movable end opposite to fixed end. Each of two spring arms connects to the fixed end and the movable end, and fixed end is fixed inside the internal crown members.

Method of fabricating a dental prosthesis (1), intended to fill an area of a first jaw, the first jaw being an identical reproduction of at least one part of an edentulous jaw (4) of an individual, the area being capable of receiving at least one tooth (3), the first jaw incorporating a protruding element (11), the method comprising: a first step of depositing the first portion (5) of a material on the area of the first jaw, in such a way that the first portion of deposited material can be hooked to the projecting element, the material being capable of preserving its shape after deposit; a step of attaching the tooth to the first portion of the deposited material.