FIELD OF INVENTION
This invention relates to an improved dental cryer elevator for removal of mandible molar root.
BACKGROUND OF THE INVENTION
Existing dental cryer for the removal of single lower molar roots either mesial or distal comprises a handle, a shank and a blade which is connected with the shank at an angle of 90 degree.
Blade of existing dental cryer is provided in the triangular shape. Apex angle of the blade situated at most distal end of blade is known as working end of cryer, which is less than another two angles of triangle.
Existing known dental cryer having one pointed tip at the most distal end of blade which is known as beak or working tip of cryer elevator.
Existing dental cryer comes into pair; one for the right side of mandible and another one for the left side of mandible molar root removal.
Existing dental cryer is used on patient always from the buccal side of patient's jaw or in another word the handle of elevator faces towards the cheeks of patient, and blade of cryer faces toward tooth of patient's jaw.
Blade of existing cryer is having two surfaces, one is outer surface which is convex and another one is inner surface which is concave and always faces towards roots.
Most distal end of blade goes superiorly towards shank of cryer blade to become divergent, where thickness of blade increases in comparison to tip of blade.
WORKING MECHANISM
Working mechanism of existing dental cryer relies on the wheel and axis principle of elevators. Due to this, it gives more mechanical advantage in comparison to other working mechanism of elevators.
For the removal of single broken mandibular roots, either mesial or distal root, take the required side of dental cryer and insert the blade of cryer into opposite side empty socket in such a manner that the concave or inner surface of blade faces towards broken root. Thereafter, rotate the handle of elevator as a wheel along the axis of shank in such a manner that, the blade of elevator always goes toward occlusal surface. This initial rotary movement of blade breaks the bony septum, and then engages the root and by further rotation it lifts out and removes root from the socket.
OBJECTS OF THE INVENTION
The primary object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which is comfortable for both doctors and patient.
Another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which can minimize operator's metacarpal condition after prolonged use of cryer by operator.
Further object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root, which increases the success rate of lower molar root removal.
Still another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which exerts minimum stress and force over patient during treatment.
Yet another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which minimizes the slipping of blade during removal of root and lessens the trauma into surrounding area of working site.
Still another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which can exert balanced elevation force over the root surface at two different parts of root.
Further object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which reduces the treatment time for removal of lower molar root.
Another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root, which removes the bony septum of lower molar socket more quickly and efficiently.
Yet another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root which reduces the chance of further root breakage during mandibular mesial or distal root removal.
Still another object of the present invention is to propose an improved dental cryer elevator for removal of mandible molar root, wherein blades engage the root evenly over two different points of root and remove the root efficiently.
Principal claim indicates inventive features of the present invention and subsequent claims reflect advantageous features of the present invention.
STATEMENT OF INVENTION
According to this invention, there is provided an improved dental cryer elevator for removal of mandible molar root comprising of a handle, a shank and an improved blade attached to most distal end of said shank wherein base of blade is towards shank of cryer and ap'ex of the blade is situated away from shank at most distal part of the cryer.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings and wherein:
Fig. A shows : existing dental cryer.
Fig. B shows: blade or single working tip of known dental cryer.
Fig. C shows: bifurcated beak of dental cryer of present invention.
Fig. D shows: blade or two working tips of Dental cryer of present
invention.
Fig. E shows: side view of blade of dental cryer.
Fig F shows: V shaped notch of Dental cryer blade with one shorter beak.
Fig. G shows: U shaped notch of Dental cryer blade.
DETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS:
Reference may be made to the accompanying drawings wherein the present invention discloses a dental cryer by the modification of any known dental cryer at the most distal end of blade of said cryer.
The present invention provides a dental cryer comprising of a handle, a shank and an improved blade.
Blade of said dental cryer is provided in such a manner that it forms a triangular shape blade attached at most distal end of shank wherein the base of triangular blade is situated towards shank of cryer and apex of triangle is situated away from shank at most distal part of said dental cryer.
The present invention constitutes in bifurcation of the end of said blade to form pair of cow horn like fine pointed projection known as working tip of dental cryer. The bifurcation of blade is provided in a manner that it forms a V or V shaped notch at the distal end of said blade. The open side or mouth of V or V is located towards the distal end of the blade,
and opposite or closed side of V or 'V' is located towards the shank of dental cryer.
The jaw can also be bifurcated in various forms that the notch looks like inverted V, U, or any other shape of notch, which can solve the purpose of bifurcation.
After having bifurcation, the blade of cryer appears in w shape.
Fine projected tips of said dental cryer are made suitably in the shape of for example round, triangular, square and cylindrical, by which design the objective of invention is fulfilled.
This bifurcation at the most distal end of blade forms two fine, projected cow horn like tips. This is also known as the working tips or beak of dental cryer.
Distance between two projected tips is 1 to 4 mm and length of notch is 1 to 6 mm as per requirement. Length of notch and distance between two projected tips is kept as minimum as possible for obtaining better result of dental cryer.
Distal end of both projected tips of said dental cryer may be pointed, flat or u shape or any other shape.The dental cryer is provided in pair, one for the right side of mandible and another one for left side of mandible molar root.

Right dental cryer is provided for the removal of right mandible root and left dental cryer is provided for the removal of left mandible molar root.
EFFECTS OF DENTAL CRYER BLADE ON FORCES AND WORKING MECHANISM OF CRYER
This newly designed two bifurcated pointed projection of elevator blade increases the efficiency of dental cryer manifolds in comparision to existing cryer.
Two pointed tip of dental cryer engages the root piece at two points, buccal surface and lingual surface of root, by which it provides controlled, slip less and easy elevation of root.
Elevation of root into two points creates more elevating force in comparison to one point elevation force of existing cryer.
The dental cryer of the present invention engages the root piece at apex and takes advantage of root shape and anatomy of root. Root is narrower at apex and becomes broader as goes superiorly towards crown. During removal of root apex of root becomes engaged in between two projected tips and during rotation, both of projected tips go superiorly and when it reaches at that particular point where bucco-lingual width of root is greater than the distance of projected tips, then root becomes engaged between tips, and further rotation of cryer lifts out the root from socket.
This newly designed dental cryer is capable to remove whole bony septum of socket between the roots by single rotation of blade. The bony septum of socket is soft in nature and due to this existing single tip cryer creates a cleft into socket wall instead of removing whole septum.
Force exerted over root piece by the present invention is always parallel to longitudinal axis of root rather than deviated and buccal or lingual force from the longitudinal axis of root, which is exerted by existing cryer.
Further, the dental cryer provides space for the movement of blade through the bony septum and facilitates easy removal of root, whereas existing cryer makes a cleft into bony septum and touches the root tip without removing whole septum. Because of this, provision has not been made for space for moving the blade into socket.
Further, the new construction also increases the life of instrument because in dental cryer force is distributed over two points instead of one point like in case of existing dental cryer.
A notch of any shape such as V, U is provided at the most distal end of triangular blade of the elevator.
It is to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims:-

I CLAIM
1. An improved dental cryer elevator for removal of mandible molar root comprising of a handle, a shank and an improved blade attached to most distal end of said shank wherein base of blade is towards shank of cryer and apex of the blade is situated away from shank at most distal part of the cryer.
2. An improved dental cryer elevator for removal of mandible molar root as claimed in claim 1 wherein said apex is provided with a bifurcation to form pointed projection known as working tip.
3. An improved dental cryer elevator for removal of mandible molar root as claimed in claim 2 wherein said bifurcation constitutes V, U or any other shape notch and creates only two projected beak.
4. An improved dental cryer elevator for removal of mandible molar root as claimed in claim 3 wherein the projected tips of said dental cryer are having cross section in the shape of for example round, triangular, square and cylindrical.
5. An improved dental cryer elevator for removal of mandible molar root as claimed in any of the preceding claims wherein the distance between two projected tips is 1-4 mm and length of notch is l-6mm according to the requirement.
6. An improved dental cryer elevator for removal of mandible molar root as claimed in any of the preceding claims wherein the distal end of both projected tips of said dental cryer may be pointed, flat, U shape or any other shape.
7. An improved dental cryer elevator for removal of mandible molar root substantially as herein described with reference to the accompanying drawings.