USPTO Patent Application: Dental Composition with Stable Paste Properties

ChangeBridge: Patent Apps - Pharma (A61K)

Published September 23rd, 2025

Detected March 26th, 2026

Summary

The USPTO has published a new patent application detailing a dental composition designed for stable paste properties. The invention focuses on a specific filler composition and its surface treatment to improve long-term storage stability for dental materials.

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What changed

This document is a USPTO patent application (US20260083642A1) for a dental composition featuring a novel filler. The filler, with an average primary particle size greater than 100 nm and surface-treated with a silane coupling agent, is characterized by a specific thermogravimetric analysis profile. The application aims to provide a dental composition that maintains stable paste properties even after extended storage.

This patent application does not impose immediate regulatory obligations. However, companies involved in the development or manufacturing of dental materials, particularly those utilizing polymerizable monomers and fillers, should be aware of this intellectual property filing. It may impact future product development and market exclusivity in the dental sector.

Source document (simplified)

← USPTO Patent Applications

DENTAL COMPOSITION

Application US20260083642A1 Kind: A1 Mar 26, 2026

Inventors

Naoto Shintani, Shunsuke Miyata, Hitoshi Ando, Kazuki Nakagami

Abstract

The problem to be solved by the present invention is to provide a filler that can be used to fabricate a dental composition with stable paste properties even after long-term storage, and to provide the dental composition. A dental composition including an (A) polymerizable monomer, a (B) polymerization initiator, and a (C) filler,
characterized in that the (C) filler includes a (c2-1) filler having an average primary particle size of greater than 100 nm, surface-treated with a silane coupling agent, andwhen the (c2-1) filler having an average primary particle size of greater than 100 nm, surface-treated with a silane coupling agent, undergoes a thermogravimetric analysis under conditions of a heating rate of 10° C./min from 30° C. to 550° C. in a nitrogen atmosphere, a weight loss rate at 250° C. is 50% or less of a weight loss rate at 550° C.