GEAR ADJUSTABLE MANDIBULAR EDENTULOUS IMPRESSION TRAY

Abstract

ABSTRACT The most widely used type is the stock tray which comes pre-made with fixed sizes. Although this type oftray comes in set sizes, it can easily be customized by adding wax as a bumper or void filler, to fit a patient's mouth. However, this type may not be suitable for patients with severdy crowded teeth as its pre-formed design does not allow much flexibility. An impression tray should cover all anatomical landmarks leaving about 4-~mm uf space aruuud all areas for the impression material. This invention is for minimizing the difficulty faced during selection of trays for impression making of edentulous individuals. The solution provided in this "Gear Adjustable Mandibular Edentulous Impression Tray" is the adjustment which can be made by expanding both the posterior end of tray, the . anterior end plays a hinge role. The Hinge portion comprises the gear. The tray can be expanded to fit the patients bony structure. There is no requirement of different size tray for selection.

Specification

INTRODUCTION
Impression trays are an important part of dentistry.
A Full Arch Impression Tray is typically used to capture an entire arch which
aid in fabrication of diagnostic models, dentures, whitening trays, night guards,
orthodontic appliances, sports guards, implant crowns, veneers, or larger crown and
bridge cases.
There are 2 main types:
1. Stock trays: These are used for primary impression procedure.
2. Special trays or individual trays: These are used for final impression procedure.
These specialized tools are used to create a precise impression or mold of a patient's
teeth and surrounding oral structures, that is then used to create an accurate 3-
dimentional model of the patient's mouth. The models made from the impression
can then be used for different dental appliances or treatments, such as orthodontics,
prosthodontics, mouth guards, snoring appliances, dentures, whitening trays,
crowns, bridges, and more.
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BACKGROUND OF THE INVENTION
HISTORY
Types of Impression Trays
There are several different types of impression trays available, depending on the type
of dental work being performed and the materials that will be used.
• Edentulous metal perforated impression trays
• · Edentulous plastic perforated impression trays
• Dentate metal perforated impression trays
• Dentate plastic perforated impression trays
• Universal sectional impression tray
Stock Trays
The most widely used type is the stock tray which comes pre-made with fixed sizes.
Although this type of tray comes in set sizes, it can easily be customized by adding
wax as a bumper or void filler, to fit a patient's mouth.
However, this type may not be suitable for patients with severely crowded teeth as
its pre-formed design does not allow much flexibility. An impression tray should
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cover all anatomical landmarks leaving about 4-Smm of space around all areas for
the impression material.
Stock impression tray materials include stainless steel, plastic, or acrylic resin, and
can be solid or perforated with holes for more material retention.
There are many different types of impression trays, many of which can be used
interchangeably for an array of dental procedures or treatments. When deciding
which type of impression tray you need for your procedure, first you must know
what needs to be captured in the impression, then choose the. tray which best fits the
Q) purpose.
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OBJECTIVES
1. To Facilitate the dental surgeon to make easy precise impressions usmg
this all in one size "Gear Adjustable Mandibular Edentulous Impression
Tray".
2. A Tray to adapt the different angulations m edentulous mandibular ridge.
3. A Tray to accommodate all .edentulous ridge angulations and size.
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SUMMARY OF THE PRESENT INVENTION
Stock trays are rigid trays commercially manufactured in different sizes and shapes .
and usually made of resin or metal. Edentulous stock trays have a shape which
conforms to the shape of the edentulous ridge of either the mandible or maxilla.
Dentate stock trays have a box shape to accommodate the teeth in the arch.
Stock trays are either used tor making primary impression for dentulous patient to
construct partial dentures which have high vertical or long flanges and flat wide floor
Or used for making pnmary impression tor edentulous patient to construct complete
denture which have short flanges and oval narrow floor.
This invention is for minimizing the difficulty faced during selection of trays
for impression making of edentulous individuals. The solution provided in
this "Gear Adjustable ·Mandibular Edentulous Impression Tray" is the
adjustment which can be made by expanding both the posterior end of tray, the
anterior end plays a hinge role. The Hinge portion comprises the gear. The tray can
be expanded to fit the patients bony structure. There is no requirement of ditlerent
size tray for selection.
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DETAILED DESCRIPTION OF THE INVENTION
Full arch trays appear different based on whether they are for the upper or
lower dentition. The upper arch is full to allow a palatal impression for appliance
such as dentures and retainers that require use of the palate. Whereas the
lower full arch tray looks more like a horseshoe, allowing space for the
tongue while still capturing the structures of the lower dentition with ease.
To ensure that impressions tum out good every time, there are certain features to
look for when choosing an impression tray.
• The size of the tray is important; it should fit comfortably in the patient's
mouth without causing any discomfort or pinching of the oral tissues, leaving
about 4-5mm of space between the arch and the tray for your materiaL
An impression tray must also be made with materials that are safe to use within a
medical environment.
The impression tray should have some means of retention, whether it is perforated,
has a mesh lining, or has a rim to hold the material and reduce risk of the material
separating from the tray when removing it from the mouth.
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This invention is for minimizing the difficulty faced during selection of trays
for impression making of edentulous individuals. The solution provided in
this "Gear Adjustable Mandibular Edentulous Impression Tray" is the
adjustment which can be made by expanding both the posterior end of tray, the
anterior end plays a hinge role. The Hinge portion comprises the gear. The tray can
be expanded to fit the patients bony structure. There is no requirement of different
size tray for selection.



CLAIMS
1/ We Claim,
Claim 1: Gear Adjustable Mandibular Edentulous Impression Tray,
said Gear Adjustable Mandibular Edentulous Impression Tray
includes:
a Upper Plate ( 1),
a Lower Plate (2)
a Key way (3)
a Key(4)
a Gear (5)
a Slot (6)
a Free Hole (7)
a Upper Handle (8)
a Lower Handle (9)
a Vertical Stop (10)

Claim 2: Gear Adjustable Mandibular Edentulous Impression Tray
of Claim 1, Wherein the Upper Plate (1) comprises a Key Way (3) ,
Gear (5) component and Upper. Handle (8) for attaching to the Lower
Plate (2).
Claim 3: Gear Adjustable Mandibular Edentulous Impression Tray
of Claim 1, Wherein the Lower Plate (2) comprises a Key (3), Slot (6)
component and Lower Handle (9) for attaching to the upper plate.
Claim 4: Gear Adjustable Mandibular Edentulous Impression Tray
of Claim 1, Wherein the Upper Plate (2) comprises a Gear (5) and a
Q) Vertical Stop (10).
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D.. Claim 5: Gear Adjustable Mandibular Edentulous Impression Tray
Q) -1- of Claim 1, Wherein the Upper Plate (1) and Lower Plate (2) is made of -N
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Poly carbonate, Plastic, Stainless steel or silicone material

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