GB887985A - Improvements in dental apparatus - Google Patents
Improvements in dental apparatusInfo
- Publication number
- GB887985A GB887985A GB39032/59A GB3903259A GB887985A GB 887985 A GB887985 A GB 887985A GB 39032/59 A GB39032/59 A GB 39032/59A GB 3903259 A GB3903259 A GB 3903259A GB 887985 A GB887985 A GB 887985A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output voltage
- vitality
- potentiometer
- nov
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0534—Measuring electrical impedance or conductance of a portion of the body for testing vitality of teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
- A61N1/36034—Control systems specified by the stimulation parameters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
887,985. Testing the vitality of teeth. CARR, H. G., and HERVEY, G. R. Nov. 17, 1960 [Nov. 18, 1959], No. 39032/59. Class 81 (2). Apparatus for testing the vitality of a tooth comprises an electrical generator providing a square-wave output voltage from zero to 50 volts peak-to-peak having a frequency in the region of 200 c/s. and including a potentiometer VR1 to vary the output voltage, the output leads A1, A2 being connected to an exploring electrode and a saliva ejector, respectively. Current is supplied by a 30-volt battery B through a switch S and the potentiometer to an oscillator including transistors T1, T2. In use, the exploring electrode is applied to a tooth and the output voltage increased gradually until pain is felt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39032/59A GB887985A (en) | 1959-11-18 | 1959-11-18 | Improvements in dental apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39032/59A GB887985A (en) | 1959-11-18 | 1959-11-18 | Improvements in dental apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB887985A true GB887985A (en) | 1962-01-24 |
Family
ID=10407189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB39032/59A Expired GB887985A (en) | 1959-11-18 | 1959-11-18 | Improvements in dental apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB887985A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1279288B (en) * | 1963-05-21 | 1968-10-03 | Chirana Praha Np | Device for the stomatological check of the dental vitality |
-
1959
- 1959-11-18 GB GB39032/59A patent/GB887985A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1279288B (en) * | 1963-05-21 | 1968-10-03 | Chirana Praha Np | Device for the stomatological check of the dental vitality |
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