CN105974968A

CN105974968A - Hot and cold pen device for oral diagnosis and treatment and uses thereof

Info

Publication number: CN105974968A
Application number: CN201610527153.0A
Authority: CN
Inventors: 简小冲
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-06
Filing date: 2016-07-06
Publication date: 2016-09-28

Abstract

The invention discloses a hot and cold pen device for oral diagnosis and treatment. The device includes a main body and a working part which is arranged at an end part of the main body, and also includes a regulation button and a control switch which are arranged on a surface of the main body. The main body is also provided with a control system, a regulation system, a refrigeration circuit and a heating circuit therein. The control system and the control switch are connected, and the control switch turns on and off the control system, and the control system controls the refrigeration circuit and the heating circuit to work. The regulation system is connected to the regulation button, and sets temperature through the regulation button, and transmits a regulation temperature signal to the regulation system. The regulation system and the control system are connected, and the control system receives the regulation temperature signal which is output by the regulation system and controls the refrigeration circuit and the heating circuit to work to a set temperature. According to the invention, the cold and hot pen device can accurately regulate temperature of a cold and hot stimulus source, and controls variation of cold and hot temperatures and temperature constancy, and is characterized by convenience, safety, and low error rate.

Description

Cold and hot equipment of oral cavity diagnosis and application thereof

Technical field

The present invention relates to dentistry appurtenance technical field, particularly relate to a kind of cold and hot equipment of oral cavity diagnosis and Its purposes.

Background technology

At present, along with growth in the living standard, the oral cavity health consciousness of people constantly strengthens, objectively boil on the nape opposite the mouth Chamber section doctor has higher requirement, and there has also been Diagnosis, therapeutic equipment and apparatus more and more simultaneously High demand.

In Diagnosis, therapeutic process, it is often necessary to carry out test for pulp vitality, gutta percha point root-canal filling, Cut off gutta percha point, take out the operation such as gutta percha point or root pipe retention pin road pretreatment.

Dental pulp is in the soft tissue in pulp cavity, and its outsourcing is around the sclerous tissues such as dentin, enamel, tool There is important physiological function.When environmental stimuli occurs, as antibacterial infect, physics and chemical stimulation or exempt from Epidemic disease reactions etc., can cause dental pulp disease, and wherein antibacterial infects is Etiological.Dental pulp disease can be divided clinically For polytype, each type of clinical manifestation and treatment prognosis are the most different, exactly location suffer from tooth and Judge that suffering from sound of baby talk marrow state has great importance.For diagnosis dental pulp disease, pulp vitality test be one non- The most important step, wherein pulp vitality electrical measurement is tested and is simply possible to use in the presence or absence that tooth pulp vitality is suffered from reaction, it is impossible to Indicate different pathological states, and the test of pulp vitality temperature not only can point out the position suffering from tooth, it is possible to reflection Suffering from the state of sound of baby talk marrow, therefore the diagnosis of pulpitis relys more on the result of pulp vitality temperature test.

The test of pulp vitality temperature is according to the one suffering from tooth and check cold or thermostimulation reaction dental pulp state Diagnostic method, its ultimate principle be variations in temperature unexpected, obvious can induce a certain degree of reaction of dental pulp or Pain.Normal dental pulp has certain threshold of tolerance to hot and cold stimulation, typically with less than 10 DEG C as cold stimulation, high Being thermostimulation in 60 DEG C, when dental pulp has pathological changes, its temperature threshold of tolerance changes, variable to hot and cold stimulation It is now sensitive or blunt, the most reactionless.

At present, the hot diagnostic method and the cold diagnostic method are included at clinical test for pulp vitality.Wherein, the hot diagnostic method often selects tooth Glue stick and hot bath.Gutta-percha rod is more convenient, but temperature fluctuation range is relatively big, control difficulty, is easily formed by mistake Difference, causes sing misdiagnosis and mistreatment, and easily coheres formation constant heating effect on tooth, increases or adds heavy patient's pain Hardship, and produce smog and certain abnormal flavour.Hot bath need to isolate tooth to be tested one by one by rubber dam, operation Loaded down with trivial details.The cold diagnostic method often selects ice lolly, air-compressing and carbon dioxide snow and the method for syringe injection cold water. Ice lolly method is simple to operate, but water can flow to adjacent teeth, and impact judges, melts fast, should not operate during heat. The method of syringe injection cold water need to use the isolation of rubber account to suffer from tooth, has both added the operation of rubber dam, has increased again Add expense；Uncertain when suffering from tooth, or adjacent several tooth the most likely for suffering from tooth time, operation is wasted time and energy. The method of carbon dioxide snow uses very inconvenient.Air-compressing, does not the most recommend and tests in dental pulp.

Root canal therapy, also known as endodontic treatment, is a kind of technology treating dental pulp disease and periapical disease, by disappearing Except the stimulus in pulp cavity particularly root pipe, including infecting or the dental pulp of inflammation, the dentin of infection, antibacterial And metabolite etc., and with filler tight closure root pipe, reach to treat dental pulp disease, prevent periapical The purpose that periapical lesion healing occurs or promotes of pathological changes.

Root canal (root canal therapy) is the most the most frequently used effectively the controlling of dental pulp disease and periapical disease Treatment method.The principle of root canal therapy is to remove, by mechanically and chemically method, the stimulus that digs up the roots in pipe, including Infect or the dental pulp of inflammation, the dentin of infection, antibacterial and metabolite thereof etc., and come by filler Root canal filling, close bizet, reach to treat dental pulp disease, prevent periapical lesion or promotion has occurred and that The purpose of healing of periapical lesion.

It is gutta-percha and sealer that modern canal obturation techniques commonly uses filler, reach height compactness, Good tapering, accurate length, all tube spaces (including branch, collateral, isthmus, communicating branch) Improve packing.According to the pressuring method difference to gutta-percha, point Lateral Compaction and press perpendicular, according to gutta-percha Temperature difference be divided into cold gutta-percha filling and Warm gutta percha filling.Cold gutta-percha filling technique is the most traditional Placement method.It is easy and simple to handle, is not likely to produce the displacement of main gutta percha point in stowing operation；Equipment requirements letter Single, it is easily mastered, operation controllability is good, and treatment is convenient, it is simple to stake core makes；But after filling gutta-percha with Leave over space between root canal wall and gutta-percha and gutta-percha, there is quality uneven, poor with the adaptability of root canal wall, Can not the whole root canal system of tight closure, the problem that there is endodontic surgery.On cold gutta-percha filling technique basis On the Warm gutta percha filling technique that grows up, utilize gutta-percha can comply with the complex shape of tube wall when thermoplastic State, enters the irregular gap of official jargon, reaches comparatively ideal three-dimensional root-canal filling effect, in stowing operation Warm gutta percha effectively by the apparatus tight that fractures, fixing, and can have good closely sealed performance with tube wall. Traditional Warm gutta percha fill method that adds is to heat press perpendicular device at oral external alcohol burner in advance, treats vertical After prelum burning is red, putting into rapidly tooth root pipe, pressurization has implanted the gutta-percha of root pipe to complete root-canal filling. Owing on press perpendicular device, temperature is transmitted by secondary, press perpendicular device tip temperature is not easy to control, completely With doctor's sensation and experience, its temperature is too high, can make gutta-percha carbonization；Temperature is too low, and side shoot root filled by gutta-percha It is not in control position, so that the failure that root pipe smelting is treated.Owing to by heating in advance, then placing into tooth root pipe, Slip up, scalded patient oral cavity may have been caused.Also have a kind of Warm gutta percha injecting method, need to use Instrumentation, can cause extra-fill, and costly, operating technology requires height, and extensive application is by certain Limit.

Hot and cold the examining that prior art is tested in pulp vitality is tested and in the Warm gutta percha fill method of root canal, The error still suffer from cold/hot temperature regulation, controlling is relatively big, and thermostatic control effect is poor, easily cause mistaken diagnosis, Fail to pinpoint a disease in diagnosis, affect doctor's judgement to conditions of patients, there is also the hidden danger that patient is damaged.

Summary of the invention

The invention provides a kind of cold and hot equipment of oral cavity diagnosis, it is possible to accurately regulate the temperature of hot and cold stimulus Degree, and control change and the temperature constant control of cold/hot temperature, easy to operate in dental diagnostic, Safety, error rate is low, it is ensured that the accuracy that conditions of patients is judged by doctor.

In order to solve the problems referred to above, the invention discloses a kind of cold and hot equipment of oral cavity diagnosis, including body and It is arranged on the work portion of body end, also includes the regulating key being arranged on body surface and control switch；Its Described in body interior be provided with control system, regulation system, refrigeration circuit and heat circuit；Described control System is connected with controlling switch, and by controlling switch activated and closing control system, control system is used for controlling Refrigeration circuit works with heating circuit；Described regulation system connects regulating key, sets temperature by regulating key Degree, to regulation systems communicate regulation temperature signal；Regulation system is connected with control system, and control system receives What regulation system exported regulates temperature signal and controls refrigeration circuit and heat the temperature that circuit work reaches to set Degree.

Preferably, heat what circuit included being sequentially connected with described in

Pressure unit, is equipped with resistance R1, and input termination alternating current power supply, by alternating current blood pressure lowering；

Rectifying and voltage-stabilizing filter unit, is equipped with diode D1, electric capacity C1 and diode D2, is become by alternating current It is changed to pulse direct current slicing voltage stabilizing, filtering, for the supply voltage of whole circuit with stable；

Stablize temperature difference unit, be equipped with manostat W1, resistance R2, manostat W2, resistance R3 and compare Device IC1, and resistance R4, resistance R5, resistance R6, resistance R7 and comparator IC2, supply voltage warp Supply voltage and the homoiothermic setting voltage source of comparator IC1 is formed as after blood pressure lowering, rectification, voltage stabilizing, filtering, The positive supply of comparator IC1 terminates second end of described resistance R4, at resistance R4 the second end and comparator IC1 Between outfan connect have feedback resistance R5, the outfan of comparator IC1 connect respectively biasing resistor R6 and First end of biasing resistor R7, second end of biasing resistor R6 and biasing resistor R7 is connected comparator IC2 Positive power source terminal, it is anti-phase that the outfan of comparator IC2 connects electric capacity C2, diode D3 and diode D4 Parallel connection, diode D3 in parallel and the outfan of diode D4 connect photoelectrical coupler Q1；

And load unit, it is equipped with heating wire, is connected with the photoelectrical coupler Q1 of stable temperature difference unit.

Preferably, heating temperature range described in is 50 DEG C-80 DEG C.

Preferably, described refrigeration circuit includes drive circuit and the cooling piece being electrically connected, described driving electricity Road includes being sequentially connected with

Protection circuit unit one, is equipped with switch S ' 1 and electric fuse F ' 1；

Filter unit one, is equipped with the electric capacity C ' 1 and resistance R ' 3 being connected in parallel；

Voltage transformation unit, is equipped with transformator T ', carries out transformation；

Rectification unit, is equipped with diode D ' 1, diode D ' 2, diode D ' 3, diode D ' 4, right Whole circuit carries out bridge rectifier, and sine voltage is converted to the pulsation electricity of single direction by rectification unit Pressure；

Mu balanced circuit unit, is equipped with manostat U ' 1, makes output DC voltage keep stable, is also equipped with The diode D ' 5 of protection manostat, prevents backward voltage；

Mirror image constant current unit, is equipped with potentiometer W ' 1, audion Q ' 1 and Q ' 2, resistance R ' 4 form mirror As adjustable constant flow source circuit, regulated the output of Constant Direct Current electric current by regulator potentiometer W ' 1 so that system Cold obtains target voltage and adjustable current；

Filter unit two, is equipped with the electric capacity C ' 2 and electric capacity C ' 3 being connected in parallel, and forms low-pass filter circuit, Alternating component in rectification unit output voltage is filtered；Also include electric capacity C ' 4, flowed to by circuit Ground wire, filters High-frequency Interference composition.

Preferably, described refrigeration temperature levels is-5 DEG C to 5 DEG C.

Preferably, described work portion is arranged on body one side end, and work portion is provided with work probe, described Work portion with heat circuit and refrigeration circuit is connected.

Preferably, also include display device, be connected with described control system, in display control program Parameter information, including cryogenic temperature and heat temperature.

Preferably, described control system includes memory module, for storing the data message adjusting temperature, institute State data message to be shown by display device.

Preferably, also include temperature alarm system, obtain the temperature information that control system collects, work as temperature When information reaches the temperature that adjusting means sets, temperature alarm system is carried out by sending prompt tone or display lamp Remind.

Cold and hot the equipment of oral cavity diagnosis of the present invention gutta-percha when pulp vitality temperature test and root canal is filled out Fill.

There is advantages that

Cold and hot equipment of oral cavity diagnosis of the present invention includes the regulating key being arranged on body surface and controls switch； Body interior is provided with control system, regulation system, refrigeration circuit and heat circuit；By regulation system and Control system regulates control refrigeration circuit and heats circuit work, makes the work portion of body end accurately reach Design temperature and then treat patient, temperature is easy to adjust, actually reaches temperature accurate, and adjustable model Enclose the gutta percha point Plugging be applicable to pulp vitality detection and root canal；Freeze, heat temperature regulation Rapidly, accurately, stably；Simple to operate, esy to use, safe and reliable.

Accompanying drawing explanation

By reading the detailed description of hereafter preferred implementation, various other advantage and benefit for ability Territory those of ordinary skill will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and also It is not considered as limitation of the present invention.And in whole accompanying drawing, it is denoted by the same reference numerals identical Parts.In the accompanying drawings:

Fig. 1 is the schematic diagram heating circuit of cold and hot equipment of oral cavity diagnosis of the present invention；

Fig. 2 is the schematic diagram of the refrigeration circuit of cold and hot equipment of oral cavity diagnosis of the present invention；

Fig. 3 is the overall structure schematic diagram of the embodiment of the present invention 1 cold and hot equipment of oral cavity diagnosis；

Fig. 4 is the overall structure schematic diagram of the embodiment of the present invention 2 cold and hot equipment of oral cavity diagnosis.

In figure: 1-body；2-work portion；3-regulating key；4-controls switch.

Detailed description of the invention

Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that not In the case of conflict, the embodiment in the present invention and the feature in embodiment can be mutually combined.

Embodiment 1

Present embodiments provide a kind of cold and hot equipment of oral cavity diagnosis, including body 1 be arranged on body end Work portion 2, also include being arranged on the regulating key 3 of body surface and control switch 4；Wherein said body 1 is internally provided with control system, regulation system, refrigeration circuit and heat circuit；Described control system and control System switch is connected, and by controlling switch activated and closing control system, controls refrigeration circuit by control system Work with heating circuit；Described regulation system connects regulating key, by regulating key design temperature, to tune Joint systems communicate regulation temperature signal；Regulation system is connected with control system, by regulation system input regulation Temperature signal adjusts control system and starts refrigeration circuit or heat circuit.

Wherein, as it is shown in figure 1, described in heat what circuit included being sequentially connected with

Stablize temperature difference unit, be equipped with manostat W1, resistance R2, manostat W2, resistance R3 and compare Device IC1, and resistance R4, resistance R5, resistance R6, resistance R7 and comparator IC2, supply voltage warp Be formed as comparing supply voltage and the homoiothermic setting voltage of comparator IC1 after blood pressure lowering, rectification, voltage stabilizing, filtering Source, the positive supply of comparator IC1 terminates second end of described resistance R4, at resistance R4 the second end with compare Connecting between device IC1 outfan has feedback resistance R5, the outfan of comparator IC1 to connect biasing resistor respectively First end of R6 and biasing resistor R7, second end of biasing resistor R6 and biasing resistor R7 is connected comparator The positive power source terminal of IC2, the outfan of comparator IC2 connects electric capacity C2, diode D3 and diode D4 Parallel connected in reverse phase, diode D3 in parallel and the outfan of diode D4 connect photoelectrical coupler Q1；

Heat workflow to be blood pressure lowering, rectification, voltage stabilizing, filter, stablize the temperature difference to load heating wire.Work as system When hot systems is started working, 220V voltage is through resistance R1 blood pressure lowering；After blood pressure lowering through diode D1 halfwave rectifier, Diode D2 slicing voltage stabilizing, and filter through electric capacity C1；Again the manostat W1 in circuit, resistance R2, Supply voltage and the homoiothermic setting voltage source of comparator IC1 is formed as, i.e. after manostat W2 and resistance R3 2 feet of comparator IC1 are homoiothermic setting voltage, and 3 feet of comparator IC1 are thermocouple detection voltage input End, it is corresponding with temperature value, 2 feet of comparator IC1 and 3 foot both end voltage relatively after, by comparing The 1 foot output of device IC1, when thermocouple detects that heating wire temperature starts when declining the most in time, when temperature liter Just stop when height is to design temperature, equilibrium temperature；Resistance R5 plays electronic feedback effect；When thermocouple is examined Measure temperature on the low side time, when the level of 3 feet of comparator IC1 is less than 2 foot of comparator IC1, compare Result is that the level of the 1 foot output making comparator IC1 is the lowest, and 5 feet of comparator IC2 are fixed bias electricity Resistance R6 and the bias voltage of biasing resistor R7, when the 1 foot level of comparator IC1 is low so that comparator IC2 The level of 5 feet less than comparator IC2 of the level of 6 feet, and then make the 7 feet outputs of comparator IC2 Level high；Photoelectrical coupler Q1 inside left be light emitting diode, right side be photosensitive tube, work as comparator When the 7 foot voltages of IC2 increase, the forward current of the left side leds in photoelectrical coupler Q1 increases, Make the right side photosensitive tube voltage across poles in photoelectrical coupler Q1 reduce, adjust the right side in photoelectrical coupler Q1 Photosensitive tube BE junction bias reduces and internal resistance increases, and makes the output voltage of photoelectrical coupler Q1 reduce, and triggers double To controllable silicon, corresponding voltage is made to be added to load on heating wire, to reach the purpose of constant temperature.

Wherein, as in figure 2 it is shown, described refrigeration circuit includes drive circuit and the cooling piece being electrically connected, Described drive circuit includes being sequentially connected with

Protection circuit unit, is equipped with switch S ' 1 and electric fuse F ' 1；

Mirror image constant current unit, is equipped with potentiometer W ' 1, audion Q ' 1 and Q ' 2, resistance R ' 4 form mirror As adjustable constant flow source circuit, regulated the output of Constant Direct Current electric current by regulator potentiometer W1 so that system Cold obtains target voltage and adjustable current；

Refrigeration work flow process is that filtering, transformation, rectification, voltage stabilizing, constant current, filtering are to load refrigeration sheet.When When refrigeration work starts, input voltage is 220V, by switch S ' 1 and electric fuse F ' 1 protection circuit；D ' 5: In order to protect integrated regulator U ' 1, add diode protection chip in a power, prevented reverse electricity Pressure.Meanwhile, heat radiation, current-limiting resistance etc. are accelerated added with fin.Electric capacity C ' 1 and resistance R ' 3 is parallel to electricity Lu Zhong, forms filter circuit, is filtered alternating current 220V；Transformator T carries out transformation 220/12 Conversion；Diode D ' 1, D ' 2, D ' 3 and D ' 4 are bridge rectifier, utilize asymmetrical circuit element, by 50HZ Sinusoidal ac be transformed into the DC circuit of pulsation, sine voltage is converted to single by rectification circuit The pulsating volage in direction；C ' 4 effect is to stop High-frequency Interference composition to flow to ground wire by circuit, filters each Plant High-frequency Interference composition.Electric capacity C ' 2 and electric capacity C ' 3 is parallel in circuit, forms low-pass filter circuit, can So that the alternating component major part in Output Voltage in Rectified Circuits is filtered.Filter circuit filters bigger ripple and becomes Point, the DC voltage that output ripple is less, make output voltage smooth.Electric current through mu balanced circuit unit, when Still ensure that output DC voltage is basically unchanged when alternating current power supply or load change.The present embodiment uses three ends can Adjusting integrated regulator LM7812, it is output as+12v.Add mu balanced circuit, make output DC voltage basic Do not changed by voltage ripple of power network and load resistance and affected.Potentiometer W ' 1, audion Q ' 1 in the present embodiment With Q ' 2, resistance R ' 4 form mirror image adjustable constant flow source circuit.By regulation deflection machine W ' 1, just can get Adjustable Constant Direct Current electric current exports, supply load, i.e. cooling piece.Audion Q ' 1 and Q ' 2 can use 9012, it would however also be possible to employ 2N1132A.

In the present embodiment, obtain+6V voltage by mu balanced circuit, by regulator potentiometer W 1, can adjust The output of joint Constant Direct Current electric current so that the i.e. cooling piece of load obtains target voltage and adjustable current.

The portion of work described in the present embodiment is provided with two, is separately positioned on the two ends end of cold and hot body apparatus body Portion, one of them work portion is connected with heating wire, and another is connected with cooling piece, and described work portion is set to Work probe.

Heating temperature range described in the present embodiment is 50 DEG C to 80 DEG C.

Refrigeration temperature levels described in the present embodiment is-5 DEG C to 5 DEG C.

Optionally, the present embodiment also includes display device, is connected with described control system, be used for showing control Parameter information in system processed, including cryogenic temperature and heat temperature.

Optionally, the present embodiment also including, described control system includes memory module, be used for storing adjustment temperature The data message of degree, described data message is shown by display device.

Optionally, the present embodiment also includes temperature alarm system, obtain the temperature letter that control system collects Breath, when temperature information reach adjusting means set temperature time, temperature alarm system by send prompt tone or Display lamp is reminded.

Cold and hot the equipment of the present embodiment oral cavity diagnosis gutta-percha when pulp vitality temperature test and root canal Fill.

As it is shown on figure 3, cold and hot equipment of the present embodiment has the housing of insulation and thermal insulation, end, housing two ends connects There are work portion, the termination in work portion to contact with facing, surface of shell arrange regulating key and controls switch, pushing away The dynamic switch that controls is to heating shelves, then heats temperature by regulating key setting, and control system heats circuit and opens Beginning work, stops when arriving design temperature heating；Promote and control to switch to refrigeration shelf, then set by regulating key Determining cryogenic temperature, control system controls refrigeration circuit and starts working, and stops refrigeration when arriving design temperature.

After cold and hot of the present embodiment oral cavity equipment accesses power supply, open the switch activated control system of control and regulation System, sets operating temperature by regulating key, and control system is started by the temperature signal of regulation system input Refrigeration circuit or heat circuit work so that work portion work probe reach design temperature, i.e. can be used for controlling Treat.

Embodiment 2

As shown in Figure 4, the portion of work described in the present embodiment is one, is arranged on the one of cold and hot body apparatus body End end, described work portion and refrigeration circuit and heat circuit and be connected, when startup refrigeration circuit works, i.e. cut The connection broken and heat circuit, when startup heats circuit work, i.e. cuts off and the connection of refrigeration circuit.

In the present embodiment all identical with described in embodiment 1 in place of non-specified otherwise, do not repeat them here.

It should be noted that for aforesaid embodiment of the method, in order to be briefly described, therefore it is all expressed as A series of combination of actions, but those skilled in the art should know, and the present invention is not moved by described The restriction of work order, because according to the present invention, some step can use other orders or carry out simultaneously. Secondly, those skilled in the art also should know, embodiment described in this description belongs to be preferable to carry out Example, involved action is the most essential to the invention.

Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited System；Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. cold and hot equipment of oral cavity diagnosis, including body and the work portion being arranged on body end, it is special Levy and be, also include the regulating key being arranged on body surface and control switch；Wherein said body interior sets It is equipped with control system, regulation system, refrigeration circuit and heat circuit；Described control system and control switch phase Even, by controlling switch activated and closing control system, control system is used for controlling refrigeration circuit and heating electricity Road works；Described regulation system connects regulating key, by regulating key design temperature, passes to regulation system Pass regulation temperature signal；Regulation system is connected with control system, and control system receives the tune of regulation system output Joint temperature signal also controls refrigeration circuit and heats the temperature that circuit work reaches to set.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that described in heat electricity Road includes being sequentially connected with

Cold and hot equipment of oral cavity diagnosis the most according to claim 2, it is characterised in that described in heat temperature Degree scope is 50 DEG C-80 DEG C.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that described refrigeration electricity Road includes what drive circuit and the cooling piece being electrically connected, described drive circuit included being sequentially connected with

Cold and hot equipment of oral cavity diagnosis the most according to claim 4, it is characterised in that described refrigeration temperature Degree scope is-5 DEG C to 5 DEG C.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that described work portion Be arranged on body one side end, work portion be provided with work probe, described work portion with heat circuit and refrigeration Circuit is connected.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that also include display Device, is connected with described control system, and the parameter information in display control program, including cryogenic temperature With heat temperature.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that described control system System includes memory module, and for storing the data message adjusting temperature, described data message passes through display device Display.

Cold and hot equipment of oral cavity diagnosis the most according to claim 1, it is characterised in that also include temperature Warning system, obtains the temperature information that control system collects, when temperature information reaches what adjusting means set During temperature, temperature alarm system is reminded by sending prompt tone or display lamp.

10. arbitrary described cold and hot the equipment of oral cavity diagnosis of claim 1 to 9 is for pulp vitality temperature test Fill with gutta-percha during root canal.