US 12274766 B1Patent grantUnited States

Color-Adjustable Biocomposite Dental Crown

Official patent title

Biocomposite dental crown and method of making

Arabic title: تاج أسنان من مركب حيوي وطريقة تصنيعه

Invention

Problem

Metal, porcelain, ceramic, and resin dental crowns involve tradeoffs among cost, appearance, tooth preparation, chipping, wear, staining, and durability.

Why it matters

A lower-cost restorative material with suitable strength, appearance, moisture resistance, and oral compatibility could expand dental-crown options, but all properties require rigorous validation.

Approach

The crown uses a nanostarch biocomposite made from date seed, coconut shell, fish bone, and camel bone components, an organic composition, and polymer-forming agents. The mixture is acid-treated, molded, and photocured or thermally cured into a crown structure.

Who may benefit

Potential beneficiaries include dental-material researchers, restorative-dentistry laboratories, crown manufacturers, biomaterials developers, and organizations valorizing agricultural and animal by-products.

Potential value

The disclosure combines several bio-derived feedstocks, nanoscale particles, selectable dyes, defined molding dimensions, and alternative curing routes in one proposed crown material.

Background

Dental crowns restore the shape, size, strength, and appearance of damaged teeth. Metal crowns are durable but can be costly and visually conspicuous. Porcelain-fused-to-metal crowns improve appearance but may show a dark margin or chip, while ceramic crowns may require greater tooth reduction and can affect adjacent teeth. Resin crowns are repairable but may wear, fracture, or stain. The publication proposes a molded biocomposite using plant and animal by-products as an additional crown-material concept.

Technology overview

Date-seed and coconut-shell nanostarch are combined with fish-bone and camel-bone powder plus selected fruit waste, gels, natural glue, glycerin, dye, and polymer-forming agents. Acid hydrolysis forms a nanostarch biocomposite, and a disclosed pyrolysis step uses 120–160 °C. The dental mixture is pressed into a crown and photocured or thermally cured. Claims specify sub-25-nm particles, crown dimensions, color coordinates, mechanical ranges, and no water absorption under ASTM D570.

Potential applications

Candidate material for experimental molded dental-crown prototypes.
Restorative-dentistry research on bio-derived composite formulations.
Color-adjustable dental-material studies using plant-derived dyes.
Value-added use of date, coconut, fish-bone, and camel-bone by-products.

Evidence-supported advantages

The formulation uses multiple plant- and animal-derived feedstocks.
The claims define nanoscale particle size and crown dimensions.
Both rapid photocuring and longer thermal-curing embodiments are disclosed.
Color coordinates and mechanical-property ranges are specified.
The claims state no water absorption under ASTM D570.

Development stage

Material preparation images and claimed physical properties are described; oral biocompatibility, long-term mechanical testing, and clinical performance were not established.

Commercial opportunity

The material may interest dental-composite and crown-development partners. Translation requires independent verification of composition, fatigue and fracture resistance, wear, adhesion, water and chemical stability, leachables, oral biocompatibility, sterilization, shade stability, machinability, reproducible manufacture, clinical performance, and dental-device approval. Cost benchmarking would also be necessary.

Patent classifications

WIPO IPC

A61K6/898Preparations for medical, dental or toiletry purposes
A61C13/08Dentistry; apparatus or methods for oral or dental hygiene

CPC

A61C5/77Dentistry; apparatus or methods for oral or dental hygiene
A61C13/087Dentistry; apparatus or methods for oral or dental hygiene
A61K6/831Preparations for medical, dental or toiletry purposes
A61K6/887Preparations for medical, dental or toiletry purposes
A61C13/081Dentistry; apparatus or methods for oral or dental hygiene
A61K6/65Preparations for medical, dental or toiletry purposes
A61K6/898Preparations for medical, dental or toiletry purposes
A61K6/80Preparations for medical, dental or toiletry purposes
A61C5/73Dentistry; apparatus or methods for oral or dental hygiene
A61K6/17Preparations for medical, dental or toiletry purposes
A61K6/891Preparations for medical, dental or toiletry purposes

Inventors

First inventorABM Sharif Hossain
InventorHassan Ahmed Rudayni
InventorMohammad Saad Aleissa
InventorMohammed Musa Zahrany
InventorAbdulrahman Alhudhaibi
InventorFazliny Abdul Rahman

Keywords

dental crown
biocomposite
nanostarch
date seed
coconut shell
bone powder
photocuring
restorative dentistry

Patent document and drawings

The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.