FLEXIBLE MAXILLARY EDENTULOUS DENTAL IMPRESSION TRAY

Abstract

ABSTRACT 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. This invention is for minimizing the difficulty faced during impression making edentulous individuals. The solution provided in this Flexible Maxillary Edentulous Dental Impression Tray, is the flexible labial portion and flexible buccal portion to adapt the oral structures. Ths flexible portions are made of silicone material. They are fixed to the tray by means of the slots provided in the tray.

Specification

FORM-2
THE PATENTS ACT, 1970 .
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(see Section 10 & rule 13)

1. TITLE OF THE INVENTION:
Flexible Maxillary Edentulous Dental Impression Tray
2.APPUCANT:
S.No NAME NATIONALITY ADDRESS
1 Saveetha Institute of Medical and Technical Sciences INDIAN No: 162, Poonamallee High Road, Velappanchavadi, Chennai-600077
3. PREAMBLE TOTHE DESCRIPTION:
The following specification describes the invention and how it is to be performed.

Bank : INDUSIND BANK
Branch : NUNGAMBAKKAM ((SAVEETHA UNIVERSITY))
DD No : 402504
DD Date : 19/10/2024
Amount: 8900/-

TITLE OF INVENTION
Flexible Maxillary Edentulous Dental Impression Tray.
FIELD OF INVENTION
Dentistry

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.

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 cover all anatomical landmarks leaving about 4-5mm 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 purpose.

OBJECTIVES
1. To Facilitate the dental surgeon to make easy impressions using this Flexible Maxillary Edentulous Dental Impression Tray.
2. A Flexible Labial and buccal portion to adapt the different depth in oral structures.

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 for 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 primary impression for edentulous patient to construct complete denture which have short flanges and oval narrow floor.

This invention is for minimizing the difficulty faced during impression making edentulous individuals. The solution provided in this Flexible Maxillary Edentulous. Dental Impression Tray, is the flexible labial portion and flexible buccal portion to adapt the oral structures. Ths flexible portions are made of silicone material. They are fixed to the tray by means of the slots provided in the tray.

DETAILED DESCRIPTION OF THE INVENTION

To ensure that impressions turn 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. To adapt the different labial and buccal depth in oral cavity flexible silicone flaps are incorporated in this invention to facilitate the dentist to make easy impressions.

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.

This invention is for minimizing the difficulty faced during impression making of dentulous and edentulous individuals. The solution provided in this Flexible Maxillary Edentulous Dental Impression Tray, is the easy adaptation to the bony and soft tissues undercuts.

Requisites of Flexible Maxillary Edentulous Dental Impression
Tray.
Dimensions
Flexible flap Height (mm) Width (mm)
labial 10-15 35-40
Medium 10-20 35-40
High 10-30 35-40

Advantages of Flexible Maxillary Edentulous Dental Impression
Tray.
1. Silicone flaps in labial and buccal portion of the tray helps in adapting the oral structures
2. Lesser wastage of material during the process of impression making.
3. Good adaptation to the bony and soft tissue undercuts during impression making.

CLAIMS
I/We Claim,
Claim 1: Flexible Maxillary Edentulous Dental Impression Tray.
said Flexible Maxillary Edentulous Dental Impression Tray.
includes:

a buccal flap (1),
a labial flap (2)
a slot hole (3)
a projection (4)

Claim 2: Flexible Maxillary Edentulous Dental Impression Tray of Claim 1, Wherein the buccal flap (1) comprises small size slot hole (3) for adapting to the projection (4) of the tray.

Claim 3: Flexible Maxillary Edentulous Dental Impression Tray of Claim 1, Wherein the labial flap (2) comprises small size slot hole (3) for adapting to the projection (4) of the tray.

Claim 4: Flexible Maxillary Edentulous Dental Impression Tray of Claim 1, Wherein the flexible maxillary edentulous dental impression tray is made of silicone biocompatible material.

References:
-Qtt-2024/130630/202441082005/Form 2(Title Page)
1. Chairside Custom Impression Trays. Massad® Edentulous Low Temp Impression
Trays [Internet]. Star Dental Lab, 2804 Great Valley Dr. Cedar Park, TX. 78613.
Available from: http://www.stardentallab.net/Massad_Edentulous_Arch.pdf
2. Zest Dental Solutions [Internet]. 2875 Loker Avenue East, Carlsbad, CA, USA
[Accessed 9th Oct 2017, Updated 2017]. Available from:
https://www.zestanchors.com/media/wysiwyg/pdf/chairside/L8032-ma_rev_a_Ql-
16.pdf
3. Zhang Z, Low temperature thermoplastic material and preparing method thereof
United States Patent. 8,859,691 B2 2014
4. Devan MM, Basic principles in impression making J Prosthet Dent 2005
93(6):503-08.10.1016/j.prosdent.2005.02.00715942607
5. Shetty S, Nag PVR, Shenoy K, The selective pressure maxillary impression: A
review of the techniques and presentation of an alternate custom tray design j Indian
Prosthodont Soc 2007 7(l):08-l 1.10.4103/0972-4052.32509

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