WO2007142630A1

WO2007142630A1 - Dental filing tool

Info

Publication number: WO2007142630A1
Application number: PCT/US2006/021677
Authority: WO
Inventors: Daniel Sung-Yul Kim
Original assignee: Daniel Sung-Yul Kim
Priority date: 2006-06-05
Filing date: 2006-06-05
Publication date: 2007-12-13

Abstract

A dental filing tool having a handle easy to hold between fingers which arches over and secures at both ends of a thin filing strip coated with some superfine abrasive material, especially but not limited to diamond dust, or alternatively a sharp cutting system along the edge or lateral surface. From hole-like openings at each end, the strip is fastened between each end of the handle with sufficient tension in the strip to create a rigid filing and grinding surface. The handle is made of two pieces with male and female from formable materials not limited but like plastics injected into mold which can be snapped together into one piece with a filing strip inserted. On the outside edge of each vertical arm of the handle is a smooth flatten surface where to place fingers to hold the handle.

Description

Dental Filing Tool

BACKGROUND OF THE INVENTION

This invention relates to dental filing tool, more particularly to a dental filing

tool that holds a thin filing strip coated with superfine abrasive material or has a

sharp cutting edge for efficient filing of the interproximal area and fitting of dental

crowns, bridges, onlays, inlays and fillings.

The current conventional method for fitting dental crowns, bridges, onlays

and inlays, herein referred to generally as restorations, involves the dental

practitioner sliding colored carbon paper, the thickness of which is the

recommended measured distance between teeth, in between the interproximal area

of the tooth and the restoration. The carbon paper marks with carbon ink the

proximal contact area where the two surfaces of the teeth and/or restoration are too

close, and then the practitioner grinds the restoration with a rotary instrument to

remove excess material. This method is tedious, inefficient, and inexact The dental

practitioner has to continually remove the restoration and grind the heavy proximal

contact surface until the fitting surface and shape is achieved. The practitioner first

must insert the carbon marker to gauge the distance between the restoration and

tooth, withdraw the carbon marker, remove the restoration, and then grind the

surface of the restoration marked by the carbon ink with a separate rotary instrument or a freestanding grinding machine which often is in another area away

from the patient. Then return to the patient to fit the restoration, and then start the

process all over again until the desired distance between the restoration and the

adjacent teeth is achieved. It is a time consuming process and there is possibility of

over-grinding, in which case a whole other replacement restoration must be

reconstructed which involves an expensive lab fee for the practitioner and wasted

time for the patient and the practitioner, not to mention it is inconvenient for the

patient who suffers for the delay and pain.

Another method employed is the stand-alone use of a metal filing strip

coated with some superfine abrasive material. The metal filing strip is inserted

between the interproximal area to file down the proximal contact area of the crown

for an accurate fit. Since the space between the tooth and the crown, bridge, onlay,

and inlay must not be too close nor too spaced apart the practitioner must file

increments at a time. These steps are repeated until the desired distance between

the tooth and the restoration is achieved. Because the filing strip is extremely thin,

narrow, and malleable, it is necessary for the practitioner to create rigid tension in

the strip by holding it taunt at opposite ends with fingers from both hands.

Unfortunately holding the filing strip in such as manner is cumbersome in the

patient's mouth and impedes the practitioner from achieving desired angles and

restricts range of motion to effectively file. Especially when the patient is receiving crowns, bridges, onlays, or inlays in the back of the mouth where it is considerably

more difficult to access, it is difficult for the practitioner to file since both hands

are needed to hold tension in the strip and often a patient's mouth is too small and

cannot open wide enough to accommodate comfortably. As a result, the patient

must endure strenuous stretching of the lips and jaw area. Often a practitioner

struggles to find the best placement for fingers to pinch the strip to create sufficient

tension while attempting to minimize the imposing presence of both hands in the

patient's mouth. This method is inefficient, tiresome for the practitioner, and

uncomfortable for the patient. Moreover, because of the difficulty involved

handling the filing strip, often patients sustain suffer small cuts due to the sharp

edges of the strip coming in contact with gums and lips while filing the tooth or

restoration.

Another method employed is that of a thin metal strip coated with fine

abrasive material is fastened to a removable bow which is attached a handle. This

bow and handle are too long to maneuver in the mouth and limit the optimal length

of the abrasive strip for posterior teeth. The strip itself is the important working

surface in interproximal filing and the short length of the strip for posterior teeth in

this method is ineffective because the strip itself is too short to effectuate a sawing

motion to file away material, particularly for posterior teeth. Also in this method, it

is a hassle to replace the filing strip after each use. In order to solve the existing problems with the current methods for

interproximal grinding and adjustment between restorations and teeth, it is the

object of the present invention to provide a tool that has a body that secures a filing

strip with sufficient tension that can be held by one hand between opposable

fingers. This allows for the practitioner to maneuver within the patient's mouth

with easier reach and greater range of motion for more time efficient and effective

filing and grinding of the interproximal area with greater comfort for the patient for

a quicker fitting of crowns, bridges, onlays, and inlays.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a filing tool which

secures a filing strip with sufficient tension, that is easy to hold and maneuver

while inserted in a patient's mouth to efficiently and effectively file and grind

between teeth and the crown, bridge, onlay, or inlay for an accurate fitting.

Another object of the present invention is to provide a filing tool that inflicts

the least amount of discomfort and injury to patient's gums and lips during filing.

Accordingly, the present invention is comprised of a handle made of a

formable material, not limited to but like plastic, which has a horizontal arm

element with a first vertical arm extending downward from its first end and a

second vertical arm extending from its second end forming an arch. Between the first and second vertical arms a filing strip is secured at each end tautly with

tension. The horizontal arm which arches above and flush with the filing strip from

its top edge tapers downwards towards the filing strip reducing in thickness to a

fine beveled edge. The horizontal arm which arches above and flush with the filing

strip has a middle portion with a reinforcing raised flat segment on both sides of

the horizontal arm that increases thickness to achieve rigidity. Additionally, the

first and second vertical arms of the handle also taper in thickness from the outside

edge inwards towards the filing strip reducing in thickness to a fine beveled edge.

The outside wider edges of the first and second vertical arms have a flattened

surface area on which opposable fingers may be placed to hold the invention to

facilitate an easy sawing back and forth movement to file.

The above and other objects, features, and advantages of the present

invention will be fully understood from the following description considered in

connection with the accompanying drawings included.

BRIEF DESCRIPTIONS OF THE DRAWINGS

FIG. 1 is a perspective view of a preferred embodiment constructed

according to the present invention.

FIG. 2 is a perspective view of a preferred embodiment of two components

before engagement. FIG. 3 is a spreaded inside-out view of two components before engagement.

FIG. 4 is a perspective view of the ends of the components of a vertical arm

before engagement to fasten an abrasive dental strip .

FIG. 5 is a elevation view depicting the insertion of the filing tool

interproximally.

DETAILED DESCRIPTION OF THE INVENTION

The dental filing tool 1 shown as preferred embodiment in FIG. 1 comprises

of handle component 10 made of a formable material not limited to but like plastic,

which has a horizontal arm element 11 with a first vertical arm 12 extending

downward from its first end and a second vertical arm 13 extending downward

from its second end forming an arched structure. Between the first 12 and second

13 vertical arms a filing strip 15 is secured at each of its ends tautly with tension.

The dental filing tool 1 shown as preferred embodiment in FIG. 1 and 2 is

assembled by 3 pieces; The first vertically divided half 30 of the handle component

10 with cylindrical projection snaps 31, the second vertically divided half 32 of the

handle component 10 with cylindrical hole like female snaps 33 and the filing strip

15.

The cylindrical male snaps 31 are projected on the inside surface 34 of the

first vertically divided half 30 and the cylindrical hole like snaps 33 are on the inside surface 35 of the second vertically divided half 32 of the handle component

10.

The each cylindrical projection snap 31 protrudes towards the second

vertically divided half 32 of the handle component 10 and each projection 31 is

located according to the cylindrical hole 33 of the second vertically divided half 32

of the handle component 10.

The each cylindrical projection male snap 31 locates at the each end of the

first 12 and second 13 vertical arms and at the first and second end of the

horizontal arm 11, and the cylindrical hole snaps 33 are located according to the

cylindrical projection male snaps.

The filing strip 15 has hole like openings 19 at each of its ends in the

construction of the dental filing tool 1 according to FIG.l, 2 and 3. The hole-like

each opening 19 at each of its ends of the filing strip 15 is placed over each

cylindrical projection male snap 31 at the inside surface of the each end of the

vertical arms of the first vertically divided half 30 of the handle component 10.

The second vertically divided half component 32 is placed over the first vertically

divided component 30, and the projections 31 and holes 33 are aligned to snap on,

according to FIG. 1, 2 and 3. The filing strip 15 is fastened securely between the

ends of the first 12 and second 13 vertical arms of the handle component 10 with

sufficient tension creating a rigid filing and grinding surface. The one or both lateral sides of the filing strip 15 are coated with some

superfine abrasive material 16, especially but not limited to diamond dust. THE

FILING STRIP 15 IS COATED WITH ABRASIVE MATERIAL ON ITS

ENTIRE SURFACE 16. The filing strip 15 utilized in the dental filing tool 1 is of

the appropriate thickness to be inserted into the interproximal area between teeth

and/or crowns, bridges, onlays, or inlays, generally referred to as restorations.

The outside edges of the vertical arms 12, 13 have identical flat surface areas

14 on which opposable fingers may be placed to adeptly hold the dental filing tool

1 to facilitate an easy sawing back and forth movement to file, eliminating the

cumbersome need to grip with both hands.

The dental filing tool 1 is used in the following manner as depicted in FIG.

4. Initially the user holds the handle 10 placing opposable fingers on each flat

surface area 14 of the vertical arms 12, 13 and aligns the filing strip 15 portion

above the interproximal space between the tooth 20 and the restoration 21. The

handle 10 is used to firmly insert the filing strip 15 into the interproximal space

until stopped by proximal surface contact between tooth 20 and restoration 21. At

which moment the user may, with applied pressure, commence a back and forth

sawing motion with the slight movement of the opposable fingers or wrist to file

down the proximal surface to create the appropriate interproximal distance. It should be noted that while the handle component 10 maintains sufficient

tension in the filing strip 15 to create a rigid surface, the slight malleability of the

strip 15 still allows the user to manipulate it with directional pressure applied

through the handle 10 to form to any concavities along interproximal surfaces OF

ANATOMICAL CONTOUR of teeth. As the filing tool 1 is pulled back and forth

between the area of proximal surface contact the abrasive lateral surface of the

filing strip 15 gently removes enamel or restoration material in whatever

conservative or aggressive increments desired by the user in relation to the

repetitive filing motions and applied pressure.

It should also be appreciated that the beveling of the horizontal arm element

11 and vertical arm elements 12, 13 of the dental ruing tool 1 is angled to such a

degree to allow optimal access to the interproximal area between teeth and/or

restorations. But while still maintaining adequate thickness to help prevent against

the filing strip 15 slipping too deep inflicting undesirable cuts, nicks, and other

injuries against gums.

Moreover, it should also be appreciated that the handle component 10

contains the filing strip 15 within a protective frame shielding the patient from

suffering ambient cuts and nicks of the gums, lips, and cheek walls while the user

is repositioning, re-angling, or moving the dental filing tool 1 within the mouth. It will be understood that each of the elements described above, or two or

more together may also find useful application in other types of methods differing

from the types described above.

While the present invention has been described with reference to specific

embodiments, it should be understood that it is not intended to be limited to the

details described above. Those skilled in the art understand that various alterations,

modifications, substitutions, or omissions of the forms and details of the preferred

embodiment may be made without departing from the spirit and scope of this

prevent invention. Therefore, it should be clearly understood that the descriptions

and illustrations of the preferred embodiment are only to facilitate a clearer

understanding of the invention and not used to unduly limit the scope of the

present invention.

Applicant; Kim, Daniel Sung-Yul

Claims

April 2, 2006Applicant: Kim, Daniel S. Y.CLAIMS

1. (Current) A dental filing tool which comprises an arch shaped handle

component and a strip.

2. (New) The arch shaped handle component comprises two vertically

divided components.

3. (New) The first vertically divided component has cylindrical projections

from its inside surface towards the second vertically divided component and

the second vertically divided component has cylindrical holes according to

the projections of the first vertically divided component.

4. (New) The first vertically divided component projects male snaps from its

inside surface and the second vertically divided component has sockets to

receive the male snaps projected from the first vertically divided component.

5. (Current) The strip has hole-like openings at the first and second ends.

6. ( New) The openings of the strip engage on the male snaps between the

first and second vertically divided component.

6. (Current) The strip is secured between the end of the first vertical arm and

the end of the second vertical arm.

7. (Current) The first and second vertical arms of the handle component have flat and smoothed surface on the outside of the arms for

finger rest.

Applicant; Kim, Daniel S.Y.