Classifications

• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
  • G07C3/02—Registering or indicating working or idle time only
  • G07C3/04—Registering or indicating working or idle time only using counting means or digital clocks
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
  • A61C7/06—Extra-oral force transmitting means, i.e. means worn externally of the mouth and placing a member in the mouth under tension
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
  • A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders

Definitions

• the invention relates to a removable dental apparatus according to the preamble of claim 1.
• the position of the retine teeth can change change to each other and / or a change in the prosthesis bearing occur, so that the prosthetic appliance is no longer sufficiently suitable and is perceived as disturbing by the patient when worn.
• the patient who has not worn the dental prosthesis regularly could accuse the attending doctor of incorrect treatment.
• the wear time of the device could be determined objectively, the doctor would not be exposed to the unjustified accusation of incorrect treatment.
• the use of an electronic wearing time measuring device has a great motivational effect on the patient in dental prosthetic treatment and the cooperation between patient and doctor is also positively and sustainably promoted here.
• a known orthodontic appliance (DE 28 20 358 C3) with a molded plastic body has a wearing time measuring device which enables the attending physician to precisely control the wearing time of the appliance in the patient's mouth.
• the wearing time measuring device contains a clock generator and an electronic counter. The clock and counter are activated by a sensor that detects the wearing of the device in the mouth. During the wearing time, the clock generator delivers pulses to the counter, which are added and stored. The wearing time can be determined and displayed by occasionally calling up the meter reading with an external evaluation device.
• the measuring device is inserted in a cavity of the plastic molded body, which is sealed moisture-tight with a plate.
• the disadvantage is that the query of the wearing time of the orthodontic apparatus is relatively complicated and time consuming.
• the cavity of the molded body containing the wearing time measuring device must be opened and the wearing time measuring device removed and connected to the external evaluation device. After the data has been called up, the wearing time measuring device is reinserted into the cavity, which must be closed again in a moisture-tight manner.
• the invention has for its object to provide a removable dental apparatus of the type specified in the preamble of patent claim 1, which allows an uncomplicated and quick query of the wearing time.
• the connections which can be connected to the external evaluation device are exposed and are therefore easily accessible without complicated and time-consuming preliminary work.
• the attending physician need only connect the evaluation device to the exposed connections with suitable clamps. Since the exposed connections are exposed to the oral cavity, the signal output of the wearing time measuring device is designed to be short-circuit proof. This means that there can be no malfunctions in the wearing time measuring device.
• the output signals of the wearing time measuring device are advantageously during the wearing time of the wearer. talapparates not at the signal output.
• the wearing time is determined in the wearing time measuring device by at least one sensor which reacts, for example, to moisture, temperature and / or pressure. As long as this sensor detects the presence of the dental apparatus in the mouth, it suppresses the data output.
• the wearing time measuring device expediently has an output control unit which interrupts the delivery of output signals to the signal output during the wearing time and thereby prevents an undesired flow of current between the connections exposed to the patient's mouth.
• the output control unit only switches the output signals to the signal output after receiving a request signal.
• the output control unit is only connected to the wearing time measuring device after the dental apparatus has been removed from the patient's mouth.
• the signal output of the wearing time measuring device and the control input of the output control unit are preferably at the same connections, so that the number of connections located in the oral cavity is reduced.
• the data transmission between the wearing time measuring device and the external evaluation device can take place via a single bidirectional channel, via which both the polling signal sent by the evaluation device and the output signals of the wearing time measuring device to be received by the evaluation device are transmitted.
• the holding device of which consists of a plurality of fastening elements which are electrically insulated from one another
• the metallic fastening elements are expediently used as connections.
• the fasteners Supply elements serve both for locking the dental apparatus to the patient's teeth and for connecting the evaluation device. This eliminates the need for additional connections which could be perceived as disturbing when the dental apparatus is being carried and on which food residues could settle when eating.
• the connection between the dental apparatus and the wearing time measuring device is simplified.
• the dental technician only needs to connect the outlet of the wearing time measuring device to the metallic fastening elements via flexible connecting wires and to cast the wearing time measuring device together with the connecting wires and the ends of the fastening elements in a casting compound.
• the fastening elements are always very easily accessible, so that the evaluation device can be quickly connected using suitable connecting terminals.
• the metallic clamp elements can form the connections.
• the wearing time measuring device is expediently enclosed in the molded body in a moisture-tight manner.
• connection is connected both to the signal output of the wearing time measuring device and to the control input of the output control unit.
• a moisture detector which is integrated in the wearing time measuring device, can be connected to the second connection. The moisture detector activates the wearing time measuring device as soon as the dental device is in the patient's mouth is inserted and a moisture-induced current flow between the second connection and the third connection, which is at ground potential, is determined.
• the connections are expediently marked in order to avoid confusion when connecting the evaluation device.
• the removable dental apparatuses into which the wearing time measuring devices can be integrated for the objective determination of the wearing time include both the orthodontic appliances that can be removed from the patient's mouth for the correction of tooth position and jaw anomalies as well as the removable dental prosthetic appliances.
• the prosthetic devices serving as dentures can be partial prostheses supported on the patient's remaining teeth or total upper or lower jaw prostheses that are incorporated into the edentulous upper or lower jaw.
• the wearing time measuring device can, however, also be used in crunching splints which are used when there are sliding obstacles in the patient's teeth.
• 1 a top view of a removable orthodontic apparatus with a molded body enclosing the wearing time measuring device, the clamp elements of which form the connections
• 2 is a block diagram of the output stage of the wearing time measuring device
• FIG. 3 is a top view of a removable orthodontic appliance without a molded body
• FIG. 4 is a top view of a removable orthodontic appliance without a molded body, which is attached to the patient's head via an external holding bracket,
• FIG. 5 is a top view of a removable dental prosthetic apparatus with remaining teeth, the fastening elements of which form the connections;
• FIG. 6 is a top view of a removable dental prosthetic apparatus (total upper jaw prosthesis) with a molded body enclosing the wearing time measuring device.
• the orthodontic appliance 11 shown in FIG. 1 is attached to the teeth 12 of the upper jaw. It has two molded body halves 13, 14, which are connected to one another with an expansion screw 16. The distance between the mold halves 13, 14 placed against one another is adjustable with an expansion screw 16. Clamping elements 17 made of bent steel wire are fastened to the side of the plastic molded body, which completely or partially encompass the teeth 12.
• a wearing time measuring device 18 is mounted in the orthodontic apparatus.
• the wearing time measuring device 18 is constructed using integrated circuit technology and including the battery supplying it in the Molded body half 14 cast. From the wearing time measuring device 18, three flexible connecting wires 19, 20, 21 are led out, each of which is soldered to one end 17 'of the adjacent lateral clamp elements 17 and are cast in with the ends of the clamp elements in the plastic molded body half 14.
• the connecting wires can also be connected to the ends of the clamp elements 17 by means of mini-pole clamps customary in electronics.
• the clamp elements 17 form the three exposed and easily accessible connections 22, 23, 24 of the wearing time measuring device.
• Both the wearing time measuring device and its connecting wires 19, 20, 21 are completely cast in the molded body half 14, and the connections between the wires and the clamp elements are also molded in, so that the orthodontic apparatus with wearing time measuring device does not fit into anything from the outside differs from an apparatus without wearing time measuring device.
• the wearing time measuring device 18 contains a clock, the pulses of which are counted by a counter. Furthermore, the wearing time measuring device has a temperature sensor and a moisture detector. The clock is only activated when the measured temperature is within predetermined limits and the humidity sensor detects a certain humidity. The time is only counted as long as the orthodontic appliance is in the patient's mouth. The number of pulses counted is queried with an external evaluation device, which calculates and displays the wearing time from the number of pulses.
• Fig. 2 shows a block diagram of the output stage of the wearing time measuring device 18 with the three connecting wires 19, 20, 21, which are connected to the clamp elements 17, which form the three connections 22, 23, 24 of the wearing time measuring device.
• the first connection 22 and the third connection 24, which is connected to ground potential are connected to the external evaluation device, so that the wearing time measurement device and the evaluation device can communicate with one another.
• the second connecting wire 20 located at the connection 23 is a measuring line.
• the measuring line is connected to the moisture detector 25, which only starts the clock generator of the wearing time measuring device (not shown in FIG. 2) when the connections of the second and third connecting lines 20, 21 are short-circuited by the moisture in the mouth.
• the output stage also has an output control unit 26, which receives the output signals of the wearing time measuring device to be transmitted to the evaluation device via an internal data line 27.
• the output control unit 26 contains a switching device 28 with a control input 29, which is connected to the drain terminal D of a first MOSFET transistor 30.
• the signal output 31 of the switching device 28 is connected to the gate terminal G of a second MOSFET transistor 32, the drain terminal D of which is connected to the first connecting line 19 via a resistor 33.
• the gate terminal G of the first MOSPET transistor 30 is also connected to the first connecting line 19.
• the input or output resistance of the control input or the signal output of the switching device becomes very high-impedance, so that only a small short-circuit current flows even in the event of a short circuit between the connections 22 and 24.
• the query of the wearing time is explained below.
• the bidirectional data line 39 of the external evaluation device 34 is connected with crocodile clips 35 to the connections 22, 24, namely the wire clips for attachment to the teeth, of the orthodontic appliance.
• the switching device still interrupts the delivery of output signals to the first connecting line 19.
• the evaluation device After the button 36 has been pressed, the evaluation device now sends out an interrogation signal which switches through the first MOSFET transistor 30.
• the signal is recognized by the switching device 28, which then connects the data to be transmitted to the first connecting line 19.
• the evaluation device 34 receives the output signals of the wearing time measuring device 18 present at the connections 22, 24 and calculates the wearing time, which is shown on a numerical display 37. By pressing the button 38, the counter reading of the wearing time measuring device can then be deleted again.
• FIG. 3 shows a further exemplary embodiment of a removable orthodontic appliance 11.
• the orthodontic appliance 11 consists of a lower and an upper wire arch 42, 43 and has no molded plastic body like the appliance described with reference to FIG. 1.
• the wire arches 42, 43 are releasably attached to two clamps 44, 44 'which are firmly attached to the rear molars 45, 45'.
• the wearing time measuring device 18 is fastened to the lower wire arch 42 with a sealing compound 46 which completely encloses the wearing time measuring device 18 and its connecting wires 19, 20, 21.
• the bracket or fastening elements of the wire frame can only be used as one of the connections serve because the metal wires of the metal frame are all connected to one another in an electrically conductive manner.
• the other two connections 22, 23 consist of two pins 47, 48 arranged next to one another, the ends of which are cast into the sealing compound 46 and are electrically connected to the two connecting wires 19, 20 of the wearing time measuring device.
• the connections are insulated by the potting compound 46 from the electrically conductive wire. They are arranged so that they do not interfere in the mouth and do not cause any risk of injury.
• FIG. 4 likewise shows an orthodontic appliance consisting of a wire frame without a molded body, with an outer arch 58 which closes behind the patient's head via a band and an inner branch y, y 'branching off therefrom.
• the entire construction is also referred to as head gear.
• the inner bow y, y ' is guided into the patient's mouth and connected to the banded teeth 45 and 45' on each side of the jaw via a plug connection x or x '.
• the inner arch is pulled out of the plug-in connections and out of the patient's mouth.
• the wearing time measuring device 18 is cast with the connecting wires 19, 20, 21 in a casting compound 46 which is attached to the end of the inner curve y.
• the connections 22, 23, 24 of the wearing time measuring device 18 consist of three arranged in series. ten pins 47,48,49, the ends of which are electrically connected to the three flexible connecting wires 19, 20, 21 and are cast in with the sealing compound 46.
• the apparatus consists of an essentially U-shaped plastic molded body 51, in which several artificial teeth 52 are inserted.
• the plastic molded body 51 has three fastening elements 53 encompassing the patient's teeth, which are made of bent steel wire and are fastened to the plastic molded body 51.
• the wearing time measuring device 18 is inserted in the plastic molded body on the inside in the area of the molars and sealed moisture-proof with a potting compound.
• the three connecting wires 19, 20, 21 of the wearing time measuring device 18 are brought up to the metallic fastening elements 53 of the dental prosthetic apparatus and are soldered to them.
• the treating physician can easily connect the external evaluation device to the two fastening elements of the apparatus, which are connected to the data output of the wearing time measuring device.
• the fastening elements on which the output signals can be tapped are marked by color dots 54, 54 ', to which correspondingly colored connecting lines of the evaluation device can be assigned.
• the base body with the retaining clips consists of a metallic casting.
• This type of prosthesis is called a model cast prosthesis. The dental technician places the ones to be replaced on this basic structure Plastic tooth with plastic on. As described under FIG.
• the entire basic framework then forms the ground pole and the two other poles must be designed as auxiliary poles and, together with the wearing time measuring device 18, embedded in the entire prosthesis by plastic to isolate them from the basic framework.
• the wearing time measuring device 18 can be arranged in the region of the molars as described with reference to FIG. 5.
• the prosthetic device consists of a molded plastic body 56 which is adapted to the patient's mouth and in which the artificial teeth 57 are inserted.
• the wearing time measuring device 18 is cast in the molded body 56 in the area of the molars.
• the connections 19, 20, 21 designed in the form of metallic pins 47, 48, 49 are also cast into the molded body 56 and electrically connected to the wearing time measuring device 18 via the connecting wires 19, 20, 21 running in the molded body.

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• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6399838

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (6)

• 1990
  • 1990-02-10 DE DE19904004048 patent/DE4004048C1/de not_active Expired - Lifetime
• 1991
  • 1991-01-15 EP EP19910902157 patent/EP0513032A1/de not_active Ceased
  • 1991-01-15 WO PCT/EP1991/000050 patent/WO1991011969A1/de not_active Application Discontinuation
  • 1991-01-15 JP JP3502437A patent/JPH05504278A/ja active Pending
  • 1991-01-15 CA CA 2074074 patent/CA2074074A1/en not_active Abandoned

Non-Patent Citations (1)

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