US3943628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spoon excavator for applying chemically acting tooth decay attacking fluid
Assignee: Individual
•
Filing: 1974-03-19
•
Granted: 1976-03-16
•
Expires: 1994-03-19
Abstract
Abstract A spoon excavator for administering a solution of N-monochloroglycine or other N-haloamine or like solution for effecting and facilitating dissolution of dental caries. The spoon excavator has a tubular shaft connected to a source of solution and a tip portion flattened and shaped to provide a generally spoon-like configuration for facilitating caries removal.
Inventors
- 👤 Joseph H. Kronman
- 👤 Melvin Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:55
CPC Classifications
A; A61; A61C; A61C3/00; A61C19/00; A61C19/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
A dental instrument comprising a. a source of supply of chemically active decay attacking fluid, and b. means for administering said fluid from said source of supply to dental caries, assisting in providing access to said caries by said fluid, and excavating said caries while not interfering with flow of said fluid, said means including a tubular member for conducting fluid from said fluid supply having an open working end thereof formed as a spoon excavator, having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface.
Claim 2
Dependent Claim
104 words
A dental instrument comprising a. a source of supply of chemically active decay attacking fluid, and b. means for administering said fluid from said source of supply to dental caries, assisting in providing access to said caries by said fluid, and excavating said caries while not interfering with flow of said fluid, said means including a tubular member for conducting fluid from said fluid supply having an open working end thereof formed as a spoon excavator, having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface.
Claim 3
Dependent Claim
80 words
A dental instrument as recited in claim 1 wherein transition is provided between said top surface of said spoon excavator working end and said contour of said tubular member by a generally beveled portion and a generally flat portion of which said top surface of said spoon excavator working end is an extension, and wherein transition is provided between said bottom surface of said spoon excavator working end and said contour of said tubular member by a generally curved portion.
Claim 4
Dependent Claim
47 words
A dental instrument as recited in claim 1 wherein said top surface of said spoon excavator working end of said tubular member substantially bisects said tubular member, whereby free albeit still directed flow of fluid from said tubular member past said spoon excavator working end is allowed.
Claim 5
Dependent Claim
54 words
A dental instrument as recited in claim 1 wherein said instrument further comprises a handpiece for connection to said source of fluid supply and for facilitating manipulation of said administering, assisting, and excavating means, said handpiece connected to the open end of said tubular member remote from said open working spoon excavator end thereof.
Claim 6
Dependent Claim
27 words
A dental instrument as recited in claim 1 wherein said chemically active decay attacking fluid is a solution of N-monochloroglycine at a pH between 8 and 12.
Claim 7
Dependent Claim
28 words
A dental instrument as recited in claim 1 wherein said chemically active decay attacking fluid is an aqueous solution of N-monochloroglycine at a pH between 9 and 11.5.
Claim 8
Dependent Claim
27 words
A dental instrument as recited in claim 1 wherein said chemically active decay attacking fluid is a solution of N-monohaloamine having a pH between 8 and 12.
Claim 9
Dependent Claim
105 words
A dental instrument comprising a tubular member for administering chemically active decay attacking fluid to caries, said tubular member having an open end thereof formed as a spoon excavator for assisting in providing access to said caries by said fluid and for excavating said caries while not interfering with flow of fluid, said spoon excavator end having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface, the other open end of said tubular member being adapted to be connected to a source of supply of said fluid.
Claim 10
Dependent Claim
105 words
A dental instrument comprising a tubular member for administering chemically active decay attacking fluid to caries, said tubular member having an open end thereof formed as a spoon excavator for assisting in providing access to said caries by said fluid and for excavating said caries while not interfering with flow of fluid, said spoon excavator end having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface, the other open end of said tubular member being adapted to be connected to a source of supply of said fluid.
Claim 11
Dependent Claim
45 words
A dental instrument as recited in claim 8 wherein said instrument further comprises a handpiece connected to said other end of said tubular member, said handpiece having an opening therethrough to provide communication between a source of supply of said fluid and said tubular member.
Claim 12
Dependent Claim
33 words
A dental instrument as recited in claim 9 wherein said tubular member is bent near the end thereof connected to said handpiece, whereby utilization of said instrument in a patient's mouth is facilitated.
Claim 13
Independent Claim
103 words
A method of removing dental caries or plaque comprising the steps of inserting a tubular member having the working open end thereof formed as a spoon excavator into a patient's mouth, said spoon excavator working open end having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface, using said member to assist in providing access of chemically active decay attacking fluid to said plaque or caries through said tubular member, and excavating said caries or plaque with said spoon excavator end of said tubular member.
Claim 14
Independent Claim
103 words
A method of removing dental caries or plaque comprising the steps of inserting a tubular member having the working open end thereof formed as a spoon excavator into a patient's mouth, said spoon excavator working open end having side surfaces outwardly diverging from the contour of said tubular member, a generally curved terminating surface, a generally flat top surface, and a generally depressed bottom surface, using said member to assist in providing access of chemically active decay attacking fluid to said plaque or caries through said tubular member, and excavating said caries or plaque with said spoon excavator end of said tubular member.
Claim 15
Dependent Claim
21 words
A method as recited in claim 11 wherein said steps are repeated until said caries or plaque have been effectively removed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |