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PDL DENTAL IMPLANT-incorporated with pdl to reduce stress

[Category : - HEALTH]
[Viewed 2511 times]

PDL- Dental implant- (PATENT= 430/DEL/2013)

Abstract- Dental implant which replaces missing tooth consists of crown, abutment, abutment screw, and titanium implant.
Screw of dental implant is laminated by plastic material which acts as shock absorber while chewing and biting, like virtual periodontal ligament.This reduces masticatory forces directly acting on bone leading to less bone resorption and increased implant life. Detailed study of polyurethane plastic material has been done and is attached.
Key words: PDL based dental implant, plastic based dental implant, long life dental implant, dental, implant.
Abutment screw is laminated with a plastic material (plastic material could be polyurethane acrylic, polyvinyl siloxane or other plastic material) of 0.15 to 0.35 mm (preferably) in thickness, which acts as shock absorber (virtual periodontal ligament) during mastication, it reduces direct forces on bone. Which leads to less bone resorption and increases life of implant.

1.shock absorption: due to laminated plastic material.
2.less bone resorption.
3.increased implant life.
4.more patient comfort.
5.Drug releasing polyurethane leads to better tissue healing.
6. Repairability of screw in case of loosening.

Product Details:
Implant Features: shock absorbing plastic material.
Abutment Connection: Abutment Screw of implant laminated with plastic material in threaded manner.

Abutment Connection Type: internal thread, morse taper

Implant Apical Features: oblong hole round hole

Implant Apical Shape: domed apex

Implant Body Features: threaded

Implant Body Shape: cylinder

Implant Body Surface: TPS (Titanium Plasma Sprayed) or HA (hydroxyapatite) or pure titanium

Implant Cervical Features: polished surface

Implant Cervical Shape: straight transition from body

Implant Material: Pure Titanium

Detailed polyurethane plastic material study as laminating material is as under-

1. Polyurethane is a unique material that offers the elasticity of rubber combined with the toughness and durability of metal. Because urethane is available in a very broad hardness range (eraser-soft to bowling-ball-hard), it allows the engineer to replace rubber, plastic and metal with the ultimate in abrasion resistance and physical properties. Polyurethane can reduce plant maintenance and OEM product cost. Many applications using this ultra-tough material have cut down-time, maintenance time and cost of parts to a fraction of the previous figures.
Urethanes have better abrasion and tear resistance than rubbers, while offering higher load bearing capacity.
Compared to plastics, urethanes offer superior impact resistance, while offering excellent wear properties and elastic memory.
Urethanes have replaced metals in sleeve bearings, wear plates, sprockets, rollers and various other parts, with benefits such as weight reduction, noise abatement and wear improvements being realized.

Abrasion resistant
Parts made of polyurethane will often outwear other materials by a margin of 5 to 50/one when severe abrasion is a factor. It has been proven to be vastly superior to rubber plastics and metal in many applications.

Oil and solvent resistant
Polyurethane has excellent resistance to oils, solvents, fats, greases and gasoline.
Load bearing capacity
Polyurethane has a higher load-bearing capacity than any conventional rubber. Because of this characteristic, it is an ideal material for load wheels, heavy duty couplings, metal-forming pads, shock pads, expansion joints and machine mounts.
Tear resistant
Tear-strength ranges between 500-100 Ibs./linear inch, which is far superior to rubbers. As a result, urethane is often used as drive belts, diaphragms, roll covers, cutting pads, gaskets and chute liners.
Weather resistant
Polyurethane has outstanding resistance to oxygen, ozone, sunlight and general weather conditions.
Excellent noise abatement properties
The hard urethanes are now being used as gears in products where engineers desire sound reduction. The soft urethanes are used to replace rubbers for improved sound/vibration dampening.
Most formulations offer extremely high flex-life and can be expected to outlast other elastomer materials where this feature is an important requirement. Dust boots, bellows, diaphragms, belts, couplings and similar products are made from urethane for this reason.
Electrical properties
Polyurethane has excellent electrical insulating properties and is used successfully in many moulded wire and cable harness assemblies.
Heat and cold resistant
Continuous use above 225°F is not recommended nor is urethane recommended in hot water over 175°F. At low temperatures, polyurethane will remain flexible down to -90°F. A gradual stiffening will occur at 0°F, but will not become pronounced until much lower temperatures are obtained.

2. "The biting force value of normal teeth of 770 human subjects were
measured by electric resistance strain gnathodynamometer. 365 were
males, and 405 females. Their ages ranged from 13 to 49. The results
showed that the biting force value of males is larger than that of the
females (P < 0.01). In the males, the biting force value of those aged
13-16 gradually increased with age, and the maximal biting force
values of incisor, bicuspid, and first molar of all the males were
43.3kg, 99.11kg, and 120.66kg respectively."
PubMed - indexed for MEDLINE

"Normal chewing places about 68 lbs/sq inch of pressure on the back teeth.

If you intentionally clench your teeth you may increase that force to
about 150 lbs/sq inch.

However, an individual who clenches and grinds their teeth
subconsciously at night can place up 1200 lbs/sq inch of force. That
sounds like an industrial grinding machine!"

Dental Health Directory Library
Bite and Occlusion

"The bite force was measured with the biting fork placed between the
first molars and between the incisors, respectively."

"The mean values were higher for the males than for the females.
In the males the maximal bite force thus measured in the molar region
was 39 kg (382 N) and 18 kg (176 N) in the incisor
region.corresponding values for the females were 22 kg (216 N) and 11
kg (108 N)."

PubMed - indexed for MEDLINE

From point-1 and point-2, it is concluded that polyurethane MP-750,D-575, DEFLECTION, PSI AT 5% is suitable material for lamination of dental implant screw. Similarly other suitable plastic materials can also be used for laminating dental implant screw.
1] Link
2] Link

Financial information

big implant market all over world.

UNIQUE FEATURES---providing competitive advantage.

1.shock absorption: due to laminated plastic material.
2.less bone resorption.
3.increased implant life.
4.more patient comfort.
5.Drug releasing polyurethane leads to better tissue healing.
6. Repairability of screw in case of loosening.

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