Next-Generation Plate Denture Production System

Publication ID: 24-11857385_0010_PTD

Published: October 28, 2025

Category:Future Evolutions & Paradigm Shifts

Legal Citation

pr1or.art Inc., “Next-Generation Plate Denture Production System,” Published Technical Disclosure No. 24-11857385_0010_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857385_0010_PTD

This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,385.

Summary of the Inventive Concept

A revolutionary plate denture production system leveraging advanced 3D printing and curable composition technologies to create highly precise, customized dentures with enhanced mechanical strength and natural tooth-like structures.

Background and Problem Solved

The original patent disclosed a method of producing plate dentures using stereolithography 3D printing. However, the limitations of this method include the lack of precision, limited customization options, and inadequate mechanical strength. The new inventive concept addresses these limitations by introducing a next-generation plate denture production system capable of producing highly precise, customized dentures with advanced structures.

Detailed Description of the Inventive Concept

The new inventive concept comprises a 3D printer capable of printing denture bases with precision of 1 micron or less, a curable composition for stereolithography including a first polymerization initiator for stereolithography and a second polymerization initiator for post-curing, and an artificial tooth. The 3D printer can print denture bases with advanced structures such as gradient structures mimicking natural tooth structures or lattice structures for improved mechanical strength. The curable composition includes a filler with a particle size of 1 nm or less and a photopolymerization initiator with an absorption wavelength of 450 nm or more.

Novelty and Inventive Step

The new claims introduce a paradigm shift in plate denture production by enabling the creation of highly precise, customized dentures with advanced structures, thereby rendering the original patent's method obsolete. The novelty lies in the combination of advanced 3D printing capabilities, curable composition technologies, and artificial tooth integration.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept may include using different types of 3D printing technologies, such as digital light processing or selective laser sintering, or incorporating additional features such as sensors or microelectromechanical systems (MEMS) into the denture base. Variations of the curable composition may include different polymerization initiators, fillers, or photopolymerization initiators.

Potential Commercial Applications and Market

The next-generation plate denture production system has significant commercial potential in the dental industry, enabling the creation of highly customized, precise, and strong dentures. The target market includes dental clinics, hospitals, and dental laboratories seeking to provide advanced dental care solutions.

CPC Classifications

Section	Class	Group
A	A61	A61C13/0013
A	A61	A61C13/01
A	A61	A61C13/10
B	B29	B29C64/124
B	B33	B33Y10/00
B	B33	B33Y80/00
C	C09	C09J7/10
C	C09	C09J7/30
C	C09	C09J2301/416
C	C09	C09J2433/00
C	C09	C09J2433/008

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Dental prosthetics and additive manufacturing, specifically stereolithographic 3D printing of dental devices with a focus on denture production technologies

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with expertise in dental engineering, materials science, 3D printing technologies, and polymer chemistry, typically holding an advanced degree (MS/PhD) with 3-5 years of experience in dental prosthetic fabrication

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable extensions of the source patent's core methodology, applying known techniques in 3D printing and materials science to incrementally improve denture production processes. The disclosed modifications represent standard engineering optimization strategies within the established technological framework of stereolithographic denture manufacturing. These variations would be considered routine design choices that a skilled practitioner would naturally explore to enhance precision, mechanical properties, and manufacturing capabilities.

Obvious Combinations & Variations

Source Patent Element

Stereolithographic method for producing plate dentures using a curable composition

PTD Variation

Adding precision printing capabilities of 1 micron or less and introducing gradient/lattice structures in denture base

Obviousness Reasoning

Precision enhancement and structural optimization are predictable improvements in additive manufacturing, representing standard engineering problem-solving approaches

Source Patent Element

First polymerization initiator for stereolithography

PTD Variation

Introducing second polymerization initiator with different wavelength characteristics for post-curing

Obviousness Reasoning

Layered curing techniques are well-known in polymer processing, and modifying initiator wavelengths represents a known method for controlling material properties

Source Patent Element

Basic denture base production using 3D printing

PTD Variation

Incorporating nanoscale fillers (1 nm particle size) and advanced photopolymerization initiators

Obviousness Reasoning

Material science progression naturally involves exploring nanoscale additives to enhance mechanical and optical properties of polymeric systems

Source Patent Element

Artificial tooth arrangement in denture base

PTD Variation

Introducing alternative 3D printing technologies like digital light processing or selective laser sintering

Obviousness Reasoning

Alternative additive manufacturing technologies are interchangeable for similar substrate production, representing standard design flexibility in manufacturing processes

Source Patent Element

Basic stereolithographic denture production method

PTD Variation

Integrating sensors or MEMS technologies into denture base structure

Obviousness Reasoning

Incorporating smart technologies into medical devices is a predictable evolutionary step in prosthetic design, representing standard technological convergence

35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. § 103, the variations disclosed in this Published Technical Disclosure would be considered obvious extensions of US Patent 11857385, as they represent predictable technological improvements employing standard engineering methodologies within the established technological domain of stereolithographic dental prosthetic manufacturing. The disclosed variations constitute prima facie obviousness by demonstrating routine optimization and combination of known techniques within the relevant art.

Original Patent Information

Patent Number	US 11,857,385
Title	Method of producing plate denture, curable composition for stereolithography, and plate denture production kit
Assignee(s)	TOKUYAMA DENTAL CORPORATION