Nanodiamond-containing composite material for denture construction

Patent metadata

Field	Value
Publication number	US-11751982-B2
Application number	US-202218052974-A
Country	US
Kind code	B2
Filing date	Nov 7, 2022
Priority date	Oct 23, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A curable composite material containing nanodiamonds, denture bases and other dental prosthetics made from the composite material and methods for treating dental stomatitis using these prosthetics.

First claim

The invention claimed is:

1. A composite material suitable for use in dentures or dental implants, comprising:
poly(methylmethacrylate) (PMMA) and
0.1 to 1.0 wt. % nanodiamonds based on a total weight of the composite material,
wherein said nanodiamonds have an average particle size ranging from 20 to 40 nm;
wherein the PMMA has a molecular weight of 50,000 to 1.000,000 g/mol,
wherein the composite material is porous having pores 80 to 100 μm in size,
wherein the nanodiamonds fill pores of the composite material,
where the nanodiamonds are only in the pores on the composite material, and
wherein the composite material has a surface roughness (R a ) of no more than 0.2 μm.

2. The composite material of claim 1 , further comprising rubber nanoparticles.

3. The composite material of claim 1 , wherein the nanodiamonds have an average particle size of about 30 nm and the nanodiamonds are uniformly distributed in the composite material so that the density of nanodiamonds between cm 3 different volumes of composite does not vary by more than 10%.

4. The composite material of claim 1 , wherein the nanodiamonds have an average diameter of about 30 nm.

5. The composite material of claim 1 , wherein the nanodiamonds are present in an amount ranging from 0.5 to 1.0 wt. % of the composite material.

6. The composite material of claim 1 , wherein Candida albicans binds to said composite material less than a control or otherwise identical composite material not containing nanodiamonds.

7. The composite material of claim 1 , wherein the composite material comprises 0.25 to 0.5 wt. % nanodiamonds, relative to a total weight of the composite material.

8. The composite material of claim 1 , wherein the PMMA has a molecular weight of 200,000 to 500,000 g/mol.

9. The composite material of claim 1 , wherein the composite material has an R a of no more than 0.15 μm.

10. The composite material of claim 1 , wherein the composite material has an R a of no more than 0.1 μm.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Gad Mohammed Moustafa Ahmed
• Fouda Shaimaa Mohamed Said
• Al-Harbi Fahad A
• Al-Thobity Ahmad M
• Ellakany Passent Safwat Aly

Classifications

• A61C13/04 Primary

  made by casting · CPC title

• A61C13/087 Primary

  Artificial resin teeth {(A61C13/081 takes precedence; preparations A61K6/80)} · CPC title

• A61C19/063

  Medicament applicators for teeth or gums, e.g. treatment with fluorides · CPC title

• A61K6/887

  Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title