Method of using ultrasonic dental tool

• US 5,320,532 A
• Filed: 04/21/1992
• Issued: 06/14/1994
• Est. Priority Date: 09/26/1990
• Status: Expired due to Fees

• Current Assignee: Ormco Corporation (Envista Holdings Corporation)
• Original Assignee: Ormco Corporation (Envista Holdings Corporation)
• Inventors: Alliger, Howard M., Farzin-Nia, Farrokh, Sachdeva, Rohit C. L.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): CHERICHETTI, CINDY
• Application Number:
  US07/871,910
• Time in Patent Office: 784 Days
• Field of Search: 433/3, 433/4, 433/24, 433/118, 433/119, 433/159, 433/215
• US Class Current: 433/215
• CPC Class Codes: A61C 17/20 using ultrasonics
• CPC Class Codes: A61C 7/02 Tools for manipulating or working with an orthodontic appliance tools for placement of brackets A61C7/146; instruments for attaching elastic bands A61C7/306
• CPC Class Codes: A61C 7/023 for debonding or removing orthodontic devices

Abstract

Method and device for fracturing the interface between dental structures that have been secured together, and for adhesive removal and cleaning of the teeth. The device comprises an ultrasonic tool for providing hi-directional movement of a preferred amplitude and frequency. The tool is applied against one of the dental structures at an acute angle with respect to a plane in which the interface between the dental structures lies. Alternatively, the dental tool is applied against the adhesive on the tooth surface for removal thereof. In another alternative, the dental tool is utilized with a liquid layer to provide cavitation of the liquid, thereby cleaning and polishing the enamel surface.

Claims

1. A method for removing adhesive from the surface of a tooth, comprising the steps of:

providing an ultrasonic device having a converter for producing a substantially bi-directional movement along the axis of the converter at a predetermined frequency, a horn having a connecting end and an outer working end, said connecting end being secured to said converter, for transferring said bi-directional movement to said outer working end of said horn, said outer working end being substantially wedge-shaped to provide a chiseling effect;

activating said device such that said bi-directional movement of said outer working end has an amplitude in the range of 0.0005"-0.005"; and

placing the outer working end of said horn in contact with the adhesive, whereby the adhesive is removed from tooth surface by said chiseling effect.

2. A method according to claim 1 wherein the ultrasonic device is disposed at an angle less than about 60°

with respect to the plane of the tooth surface having the adhesive thereon.

3. A method according to claim 2 wherein the ultrasonic device is operated at a frequency in the range of about 20 to 60 kHz.