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Title:
EXTRACTED TEETH SPLITTER
Document Type and Number:
WIPO Patent Application WO/2017/148490
Kind Code:
A1
Abstract:
we use the device manually to split the tooth into two equal parts without any heat generation which may affect the pulp negativelwe split it y to get a vital pulp which is used in stem cell researches This device consists of two parts : Part for splitting the single-rooted teeth by a set of needles Part for splitting the multi-rooted teeth by a sharp blade The main point is using the microscopic structure of the tooth, "Enamel rods" which are normally parallel with each other in enamel, Also using "Dentinal Tubule" which is more important and also parallel with each other and have the advantage of being hollow from the inside (as it contain soft structure inside it ie; odontoblastic process ) and has a fan shape which accept the force and transmit it in staright forward direction this helps in crack propagation among them in order to split the tooth into two equal half in a part of a second.

Inventors:
SHTEIWI, Ahmed Mohammed Elsaieed (AL Manzala, Daqahliah Masged Safaa Helba,Dr Shteiwi House, Daqahliah, EG)
ELBELTAGY, Mohamed Gamal (Nakhla St, Mansura, Daqahlia, EG)
IBRAHIM, Mohamed Mahmoud (Sadr St.Mansoura, Daqahlia, EG)
ELHAWARY, Youssry Mahmoud (Univercity Clup, Mansoura, Daqahlia, EG)
Application Number:
EG2016/000007
Publication Date:
September 08, 2017
Filing Date:
February 29, 2016
Export Citation:
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Assignee:
SHTEIWI, Ahmed Mohammed Elsaieed (AL Manzala, Daqahliah Masged Safaa Helba,Dr Shteiwi House, Daqahliah, EG)
International Classes:
C12N5/0775; A61C5/00
Foreign References:
US20150284685A12015-10-08
US20030068305A12003-04-10
Other References:
None
Download PDF:
Claims:
5.Claims

First .The Ccompact :

A TOOL USED BY CARPENTER AND BLACKSMITH FOR GRABBING AND ADAPTING THINGS. It has been modified to fit the function as follows

1- upper part

A. Driving Arm "no 1 fig no 5 ": it is the arm used in rotating serrated column which drives compact's upper part to gradually approach the bottom

B. Serrated Column "no 2 fig no 5 " : it is a column that has a place on the top in which the driver arm enters, and it is graduated like the screw in order that it can enter in the lower part of the compact specifically in the column's content no 6 in fig no 5 and in fig no 6

C. Compact Upper Part "no 3 fig no 5 ": it carries compact's all upper parts and enters the Serrated Column Container in the bottom of the compact carrying all the effective parts of the device

D. Tethering and containment screws "no 4 fig no 5 and no 4 fig no 8 " : they are attached to compact's upper part and hold or contain parts that cut teeth either the single or multi-rooted teeth, each screw diameter is 9mm and each one has a bolt and they are 25mm far from each other.

E. Serrated Two Columns " A,B in fig no 8 " : Each one of them is a 25mm column that has parallel grooves each one of these grooves is 0.6 depth , 1.2 mm width with 0.3 mm separation between each groove and the next one , The columns are above each other by a distance 10 mm , and they are welded at the tip of the compact upper part as in fig 8 ,The benefit of grooves is that it contain needles where each needle touches a groove in a column and touches it's opposite groove in the lower column to be perpendicular to the tooth.

2. Lower part:

A. Teeth Carrier " no 7 fig no 5 " : it is the part where the teeth or Curvature Keeper are placed B. Serrated Column Container " no 6 fig no 5 ": it is the part in which the serrated column enters in order to bring the compact's two parts closer.

C. Compact Base "no 5 fig no 5" : it must be proportionate so as to support compact's weight while using the device

D. Teeth Carrier Cover "no A fig no 7 ": it is a stainless steel layer , It's size commensurate with the size of teeth Carrier to cover it it's thickness is 1 mm .

E. Multiple Roots Molars Container "no B fig no 7 ": it covers the molar so as not to volatilize after splitting. It's a box with two open ends. Their dimensions are 3 cm length and width , distance between the two ends is 2.5 cm and the thickness of it's wall is 2 mm .

F. Single Root Teeth Container, it has the same function of molars container. It's a box with two open ends. Their dimensions are 3 cm length and width , distance between the two ends is 1 cm and the thickness of it's wall is 2 mm .

Second, cutting parts :

1. For Multi-rooted teeth

Multi-rooted teeth Cutting box "shown in fig no 9" cuts the molar and it is a box of stainless steel opened from both sides. The dimensions of each of these sides are 2.5 cm length and width , the thickness of it's walls are 1.5 mm, the distance between the two sides is 7 cm. the cutting blade is in the middle of one side and it is made of steel. It divides this side into two equal rectangulars It projects from the side in the amount of 1 cm in order to penetrate the molar from the buccal or lingual groove

In the middle of the outer sides which are parallel to the cutting blade of the box there are two columns "fig no 9" .

These columns are 6 mm away from each other.

The benefit of these columns is to enter into tethering and containment screw in the compact's upper part as shown in the letter A .

2. For anterior teeth :

Cutting Needles: " letter C in fig no 8" The length of each needle is 62 mm , thickness is 1.2 mm and they are about 20 in number less or more depending on the length of the tooth.

They are placed in the grooves next to each other then covered by metal rectangle. It's a rectangle that has two pierced sides with the same distance from the two screw 2.5 cm. the rectangle held by these screws and fixed by the bolt as shown in fig no 10 .

Thirdly. Curvature keeper :

It's a box with all it's components from stainless steel so that it can be sterilized.

It contains a set of slides grouped next to each other it's goal is forming a curved surface like the curved tooth to support it during its opening by blade or needle as shown in letter A in fig no 13

It is consisted of an external box, it's dimensions are shown in B in the same fig

It contains the slides inside it , Slides dimensions are shown in C in the same fig. slides number depends on tooth length and it has a cover gathers these slides to hold it , the cover is fixed by the screw and bolt as in F in the same fig and it's dimensions are shown in D .

The edges of the slides must be border-smoothed to avoid any stress concentration lead to making the crack propagation in a wrong direction

Description:
Extracted Teeth Splitter

1. Technical Field :

The device is used in the field of dentistry research

It is a way to open the extracted teeth into equal halfs without heat generation to get healthy pulp and its stem cell or internal tooth wall

2. Background Arts :

First : The dental rotary instruments

It depends on friction so heat results which affect the dental pulp negatively as shown in figure 2

Second: opening by smash or compression

By compression of the tooth to open it which may tear the pulp ,or by hammer and chisel after making a groove by the dental contra

3. Disclosure of the invention :

The Device Is Consisted Of

First .The Compact :

A tool used by carpenter and blacksmith for grabbing and adapting things, it has been modified to fit the function as follows

1- upper part

A. Driving Arm "no 1 fig no 5 ": it is the arm used in rotating serrated column which drives compact's upper part to gradually approach the bottom

B. Serrated Column "no 2 fig no 5 " : it is a column that has a place on the top in which the driver arm enters, and it is graduated like the screw in order that it can enter in the lower part of the compact specifically in the column's content no 6 in fig no 5 and in fig no 6

l C. Compact Upper Part "no 3 fig no 5 ": it carries compact's all upper parts and enters the Serrated Column Container in the bottom of the compact carrying all the effective parts of the device

D. Tethering and containment screws "no 4 fig no 5 and no 4 fig no 8 " : they are attached to compact's upper part and hold or contain parts that cut teeth either the single or multi-rooted teeth, each screw diameter is 9mm and each one has a bolt and they are 25mm far from each other.

E. Serrated Two Columns " A,B in fig no 8 " : Each one of them is a 25mm column that has parallel grooves each one of these grooves is 0.6 depth , 1.2 mm width with 0.3 mm separation between each groove and the next one , The columns are above each other by a distance 10 mm , and they are welded at the tip of the compact upper part as in fig 8 ,The benefit of grooves is that it contain needles where each needle touches a groove in a column and touches it's opposite groove in the lower column to be perpendicular to the tooth.

2. Lower part:

A. Teeth Carrier " no 7 fig no 5 " : it is the part where the teeth or Curvature Keeper are placed

B. Serrated Column Container " no 6 fig no 5 ": it is the part in which the serrated column enters in order to bring the compact's two parts closer.

C. Compact Base "no 5 fig no 5" : it must be proportionate so as to support compact's weight while using the device

D. Teeth Carrier Cover "no A fig no 7 ": it is a stainless steel layer , It's size commensurate with the size of teeth Carrier to cover it it's thickness is 1 mm .

E. Multiple Roots Molars Container "no B fig no 7 ": it covers the molar so as not to volatilize after splitting. It's a box with two open ends. Their dimensions are 3 cm length and width , distance between the two ends is 2.5 cm and the thickness of it's wall is 2 mm .

F. Single Root Teeth Container, it has the same function of molars container. It's a box with two open ends. Their dimensions are 3 cm length and width , distance between the two ends is 1 cm and the thickness of it's wall is 2 mm . Second, cutting parts :

1. For Multi-rooted teeth

Multi-rooted teeth Cutting box "shown in fig no 9" cuts the molar and it is a box of stainless steel opened from both sides. The dimensions of each of these sides are 2.5 cm length and width , the thickness of it's walls are 1.5 mm, the distance between the two sides is 7 cm. the cutting blade is in the middle of one side and it is made of steel. It divides this side into two equal rectangulars It projects from the side in the amount of 1 cm in order to penetrate the molar from the buccal or lingual groove

In the middle of the outer sides which are parallel to the cutting blade of the box there are two columns "fig no 9" .

These columns are 6 mm away from each other.

The benefit of these columns is to enter into tethering and containment screw in the compact's upper part as shown in the letter A .

2. For anterior teeth :

Cutting Needles: " letter C in fig no 8" The length of each needle is 62 mm , thickness is 1.2 mm and they are about 20 in number less or more depending on the length of the tooth.

They are placed in the grooves next to each other then covered by metal rectangle. It's a rectangle that has two pierced sides with the same distance from the two screw 2.5 cm. the rectangle held by these screws and fixed by the bolt as shown in fig no 10 .

Thirdly. Curvature keeper :

It's a box with all it's components from stainless steel so that it can be sterilized.

It contains a set of slides grouped next to each other it's goal is forming a curved surface like the curved tooth to support it during its opening by blade or needle as shown in letter A in fig no 13

It is consisted of an external box, it's dimensions are shown in B in the same fig It contains the slides inside it , Slides dimensions are shown in C in the same fig. slides number depends on tooth length and it has a cover gathers these slides to hold it , the cover is fixed by the screw and bolt as in F in the same fig and it's dimensions are shown in D .

The edges of the slides must be border-smoothed to avoid any stress concentration lead to making the crack propagation in a wrong direction

How to use :

First, multi-rooted teeth

1. the molar is placed on the teeth holder cover at the side which it is more stable as in fig no 15

2. the container is placed in a way makes the cutting part inside it in order that the cutting blade can emerge as in fig no 16

3.rotate Driving Arm while the container is held in this way , it goes down with the cutter until the cutting blade touches the molar groove. Touching position is Buccal or Lingual groove as shown in fig no 17.

The tooth must be free from all sides except the side on which it is placed and the side that touched by the cutting blade because fixing the molar from all sides leads to it's crushing into many parts.

4. leave the container to fall around the tooth and settle on teeth holder cover as in fig no 18 .

5. rotate compact driving arm slowly until we hear splitting sound and then stop rotating

6. separate the container to get the opened molar as in fig 19 then take the cutting box, container and teeth holder cover to be sterilized and disinfect the device with the appropriate manner for reuse with another molar. Secondly. Single root teeth:

1_ the tooth is placed on it's more stable side, mesial or distal on teeth holder cover . if it does not settle in place put it on it's labial or palatal surface on the curvature keeper until it becomes stable as in fig 14

2_ make the metal rectangle enter into tethering and containing screw and make it close to the serrated columns then rotate the compact arm until the cutting part approach the tooth about 2 cm

3_ each needle is put in a way makes it pass through one of the groove of the serrated columns and its opposing lower one so that they are perpendicular to the surface of the tooth . Needles are placed next to each other according to tooth length then fix the bolts of tethering nails just a little to make the needles keeping their new positions

4_ rotate compact driving arm until the cutting part get away from the tooth bringing the stacked needles as they are

5_ adjust the stacked needles so that it's tips is opposite to the

longitudinal axis of the tooth then free the bolts a small amount until the needles fall on the tooth taking it's shape and it's terrain and curvature as in fig no 11.

6_ On this way we rotate compact driving arm until it go down toward the bottom so that the length of the needles from it's contact with the tooth up to the edge of the metal rectangle does not exceed 1 cm because having wide distance weakens needles ability to penetrate tooth structure

7_ tether bolts strongly on this position by the bolts key

8_ rotate compact arm until it's upper part moves up then put the container of single rooted teeth around the tooth then rotate compact arm until the needles touch the tooth again

9_ rotate compact driving arm slowly until splitting sound is heard then stop rotating

10_ get open teeth as in fig no 20 11_ if we want to split one root of a multi-rooted tooth we split it firstly by the blade part then we get this part of the molar and splite it by the needles

4.Brief Description of Drawings :

Fig. no. 1 showing the Enamel rods of the enamel and dentinal tubule of the dentine and its parallelism and fan shape

Fig. no. 2 showing the cutting of the teeth by rotary instrument the fig showing a cutting desk

Fig. no. 3 showing the contact area between the cutting blade and the molars which is buccal or lingual groove

Fig. no. 4 showing contact area between the cutting needles and the single-rooted teeth

Fig. no. 5 showing the compact upper and lower parts

Fig. no. 6 showing the Serrated Column

Fig. no. 7 showing the tooth carrier cover A and Multiple Roots

Molars Container B

Fig. no. 8 showing the upper part of the compact and its components ; 4 is Tethering and containment screws and A,B is Serrated Two

Columns

Fig. no. 9 showing the cutting part of the multi-rooted teeth

Fig. no. 10 showing the cutting needles in its place and its covering way by the metal rectangle

Fig. no. 11 showing the needles on the long axis of the tooth surface

Fig. no. 12 showing the Single Root Teeth Container

Fig. no. 13 showing the Curvature keeper and the dimensions of it's parts

Fig. no. 14 showing the way to set the curved tooth in the curvature keeper , A showing the space between curved surface of the tooth and the keeper , B showing the stability of the tooth after adjustment of the sheets , C showing its fixation and usage with the cutting needles

Fig. no. 15 showing the position of multi-rooted tooth on the tooth carier cover

Fig. no. 16 showing the way to hold the Multiple Roots Molars Container

Fig. no. 17 showing the ideal position of the molar before covering it by Multiple Roots Molars Container

Fig. no. 18 showing the cutting part surrounded by Multiple Roots Molars Container to prevent molar escape after splitting

Fig. no. 19 showing the opened molars with its pulp inside pulp chamber and extraction of it

Fig. no. 20 showing opened single-rooted teeth and the pulp chamber and pulp canal are showed from pulp horn to the apical foramen