Method of subgingival scaling and lavage

• US 5,419,703 A
• Filed: 08/26/1994
• Issued: 05/30/1995
• Est. Priority Date: 02/18/1988
• Status: Expired due to Term

• Current Assignee: Dentsply Research & Development Corporation (Astrazeneca PLC)
• Original Assignee: Dentsply Research & Development Corporation (Astrazeneca PLC)
• Inventors: Perdreaux, Rene J., Warrin, George E.
• Primary Examiner(s): Lucchesi, Nicholas D.
• Application Number:
  US08/296,844
• Time in Patent Office: 277 Days
• Field of Search: 433/80, 433/81, 433/86, 433/119, 433/216, 601/162
• US Class Current: 433/216
• CPC Class Codes: A61C 1/0084 Supply units, e.g. reservoir arrangements, specially adapted pumps
• CPC Class Codes: A61C 17/20 using ultrasonics
• CPC Class Codes: B23Q 1/0036 one of those parts being a tool

Abstract

An insert for use in an apparatus for scaling of teeth and lavage of the gingival sulcus is provided. The insert comprises a tip for scaling and delivery of lavage fluids, retaining means for retaining the scaling tip in the insert, and a path means for delivering irrigant for scaling or for lavage through the insert and to the end of the scaling tip. The scaling tip is shaped and dimensioned for scaling and lavage below the gumline in periodontal pockets. When a magnetostrictive insert is used, an outlet means is provided to remove stack cooling water from the insert so that stack cooling water does not enter a patient'"'"'s mouth.

Claims

1. A method for subgingival scaling and lavage, comprising the steps of:

I. providing an insert having

(a) a tip for scaling and delivery of lavage fluids, said tip having a distal end and a concentric oral delivery orifice, said concentric oral delivery orifice having a diameter of about 0.25 mm positioned at said distal end of said tip, said distal end of said tip having a diameter of from 0.3 mm to 0.9 mm,

(b) retaining means for retaining said scaling tip in said insert

(c) path means for delivering irrigant for scaling or for lavage through said insert and to said concentric oral delivery orifice at said distal end of said tip in which said path means comprises inlet means for permitting flow of fluid into said retaining means and a bore through said tip communicating with said inlet means, and

(d) a magnetostrictive stack, and a connecting body attached to said stack and said tip attached to said connecting body wherein said tip is adapted for ultrasonic scaling below the gumline in periodontal pockets and said insert has outlet means for removing stack cooling water from around said stack in a direction away from said tip, subgingivally scaling and lavaging by subgingivally delivering from about 3 ml/min to about 20 ml/min of irrigant through said orifice to a dental tooth subgingival surface.

2. The method of claim 1 in which said tip is brazed to said connecting body.

3. The method of claim 1 in which said scaling tip is attached to said connecting body by quick connect means.

4. The method of claim 3 in which said tip is disposable.

5. The method of claim 1 in which said tip is connected to said connecting body by thread means.

6. The method of claim 1 in which the diameter of the distal end of said tip is reduced by rotary swaging.

7. The method of claim 1 in which the distal end of said tip has a diameter of about 0.5 to 0.7 mm.

8. The method of claim 7 in which the end of said tip is tapered so that the diameter of said tip at a point about 4 mm above said distal end will be about 0.05 to 0.5 mm greater than the diameter of the distal end of said tip, and a diameter about 8 mm above said distal end of about 0.1 to 1 mm greater than the diameter of said distal end.

9. The method of claim 1 in which the tip is shaped to provide easy access to difficult to reach places in the mouth wherein said shape provides an angle of about 109°

-119°

between the central axis of the distal end of said tip and the central axis of said connecting body.

10. The method of claim 9 in which said angle is about 114°

.

11. The method of claim 10 in which said about 114°

angle is obtained as the result of two bends in said scaling tip.

12. The method of claim 11 in which said two bends are of substantially equal radius.

13. The method of claim 1 in which the tip is shaped to provide easy access to difficult to reach places in the mouth wherein said shape provides an angle of about 125°

-145°

between the central axis of the distal end of said tip and the central axis of said connecting body.

14. The method of claim 13 in which said angle is about 135°

.

15. The method of claim 1 in which said tip has two bends in substantially different planes and is adapted for subgingivally scaling bifurcated areas of molars while providing end delivery of irrigants.

16. The method of claim 1 in which said tip has a projection with an undercut adapted to enhance the braze between said tip and a connecting body.

17. The method of claim 1 in which said tip has a threaded projection adapted to provide a removable attachment between said tip and a connecting body.

18. The method of claim 17 in which said tip is disposable.

19. A method for using a tip with an insert for subgingival scaling and lavage comprising the steps of:

(a) providing means for detachably attaching said tip to a connecting body of said insert, said tip having a distal end and a concentric oral delivery orifice, said concentric oral delivery orifice positioned at said distal end of said tip, said distal end of said tip having a diameter of less than 0.9 mm and

(b) subgingivally scaling and lavaging a tooth by delivering irrigant to said tooth through an orifice having a diameter of about 0.25 mm at said distal end of said tip subgingivally scaling or lavaging by subgingivally delivering from about 3 ml/min to about 20 ml/min of irrigant through said orifice to a dental tooth.

20. The method of claim 19 in which said tip has a projection with an undercut adapted to enhance brazing between said tip and a connecting body.

21. The method of claim 19 in which said tip has quick connect means adapted to provide a removable attachment between said tip and a connecting body.

22. The method of claim 19 in which said tip is disposable.

23. The method of claim 19 in which the distal end of said tip has a diameter of about 0.5 to 0.7 mm.

24. A method of subgingival scaling comprising the steps of:

I. providing an insert housing having;

(a) a tip for scaling and delivery of lavage fluids, said tip having a distal end and a concentric oral delivery orifice, said concentric oral delivery orifice having a diameter of about 0.25 mm positioned at said distal end of said tip, said distal end of said tip having a diameter of from 0.3 mm to 0.9 mm,

(b) retaining means for retaining said scaling tip in said insert,

(c) path means for delivering irrigant for scaling or for lavage through said insert and to said concentric oral delivery orifice at said distal end of said tip in which said path means comprises inlet means for permitting flow of fluid into said retaining means and a bore through said tip communicating with said inlet means, and

(d) a magnetostrictive stack, and a connecting body attached to said stack and said tip attached to said connecting body wherein said tip is adapted for ultrasonic scaling below the gumline in periodontal pockets and said insert has outlet means for removing stack cooling water from around said stack in a direction away from said tip, and

II. scaling and lavaging teeth subgingivally using said tip, subgingivally delivering from about 3 ml/min to about 20 ml/min of irrigant through said orifice to a dental tooth.

25. A method of scaling and lavaging, comprising the steps of:

I. providing a tip having

(a) means for detachably attaching said tip to a connecting body of an insert, said tip having a distal end and a concentric oral delivery orifice, said concentric oral delivery orifice having a diameter of about 0.25 mm positioned at said distal end of said tip, said distal end of said tip having a diameter of less than 0.9 mm and

(b) path means for delivering irrigant for scaling or for lavage to said distal end of said tip, wherein said distal end of said tip is tapered so that the diameter of said tip at a point about 4 mm above said distal end is about 0.05 mm to 0.5 mm greater than the diameter of the distal end of said tip, and a diameter about 8 mm above said distal end of is about 0.1 mm to 1 mm greater than the diameter of said distal end, and scaling and lavaging teeth subgingivally using said tip and an irrigant comprising at least one medicament,

by subgingivally delivering from about 3 ml/min to about 20 ml/min of said irrigant through said orifice to a dental tooth subgingival surface.

26. The method of claim 25 wherein said distal end of said tip is about 0.6 mm in diameter.