CN102166138B - Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth - Google Patents
Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth Download PDFInfo
- Publication number
- CN102166138B CN102166138B CN 201110065438 CN201110065438A CN102166138B CN 102166138 B CN102166138 B CN 102166138B CN 201110065438 CN201110065438 CN 201110065438 CN 201110065438 A CN201110065438 A CN 201110065438A CN 102166138 B CN102166138 B CN 102166138B
- Authority
- CN
- China
- Prior art keywords
- straight line
- slide unit
- line slide
- mounting plate
- upper mounting
- 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 - Fee Related
Links
Images
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a nanosecond laser device capable of improving the abrasion resistance and the corrosion resistance of the tooth, relating to the technical field of dental department medical instruments combining the clinical science of stomatology with material machining, processing and application. The nanosecond laser device solves the problem that teeth, especially false teeth or tooth filling material has big possibility of acid corrosion and abrasion in acidic mouth liquid. In the nanosecond laser device, injection and reinforcement effect generated by laser impact is utilized to inject titanium alloy powder into an enamel surface layer so as to improve the abrasive resistance and the corrosion resistance of tooth surfaces, effectively improve the surface sturdiness of the teeth, repair mucosa damage, especially effectively prevent the titanium alloy from being corroded in the acid solution in an oral cavity, and solve the problem that the traditional gold teeth or gold alloy false teeth do not have enough hardness.
Description
Technical field
The present invention relates to the type medical instrument for dental use technical field that clinical oral combines with the material processed processed and applied, refer in particular to the device that a kind of nanosecond laser shock peening treatment technology improves Buccodental and tooth filling material wearability and rotproofness, be particularly useful for the surface reinforcement modifying of acid condition lower teeth and tooth filling material.
Background technology
Laser impact intensified (LSP) is that a kind of laser blast wave that utilizes carries out modification to material surface, improves the technology of the performances such as resisting fatigue, wearing and tearing and stress corrosion of material.Its principle is that the high-energy short-pulse laser shock wave of inducing and material interact, and forms the plastic deformation layer at metal material surface, thereby the performances such as the fatigue strength of metal material and hardness are improved, especially fatigue life.This technology is widely applied in all trades and professions such as aviation, boats and ships, mechanical engineering, microelectronics, this technology is mainly used in material modification, metal shock peening and shaping at present, and the aspect such as Non-Destructive Testing, but this technology also is not applied to the report of clinical treatment aspect.
Have mechanical friction between the tooth in the oral cavity, friction for years causes the slow gradual forfeiture of occlusal surfaces of teeth or proximal surface sclerous tissues to be called tooth abrasion or odontotripsis.The slow forfeiture that the sclerous tissues of occlusal surfaces of teeth occurs with age generally is called the abrasion of tooth physiology, namely tooth normal loss in use.Because of sleep bruxism, tightly grit one's teeth, partially side the excessive forfeiture of occlusal surfaces of teeth sclerous tissues that reason causes such as is chewed and then is regarded as the pathologic wearing and tearing; unusual or the arrangement disorder of dental articulation such as severe are covered jaw (during interlock deeply; upper tooth covers the vertical dimension of lower tooth greater than normal value); indivedual anti-jaws of tooth (be commonly called as " Bao Tian ") etc.; because the limited meeting of mandibular movement increases the weight of tooth wear; such wearing and tearing have been exactly abnormal tooth wear, and tooth is had obvious infringement.Someone thinks that tooth is very hard, is not afraid of mill, and it is solid more to grind the moon, and this is a kind of misunderstanding in fact.The performance of tooth wear has substantial connection with the position that regular friction occurs.Occur in the wearing and tearing of posterior occlusion face, at first little and smooth plane occurs at cusp, enlarge gradually later on and deepens, consequently expose dentin.Along with wearing and tearing increase the weight of, the cheek point of the tip of the tongue of upper jaw backteeth, mandible posterior gradually flattens even depression occurs, and on the contrary, the tip of the tongue of the cheek of upper jaw backteeth point, mandible posterior then more and more seems long and sharp.
Tooth wear has a lot of harm, and for example, wearing and tearing are when causing dentin to expose, and can cause tooth to stimulation sensitivity or the pain such as hot and cold, sour, sweet; When excessive wear causes dental pulp to expose, can cause pulpitis, as can not get in time treatment even can cause periapical periodontitis; Wearing and tearing form too high, excessively sharp cusp or cause neck section to be crossed when thin, easily cause odentoschim even tooth jackknifing (odontagma); The severes such as the nest of occlusal surfaces of teeth, ditch, point wearing and tearing even polished can cause masticatory efficiency greatly to reduce, and increase the weight of the burden of periodontal tissue thereby strengthen strength when forcing patient's laboratory rodent chow, perhaps chew not in placely, increase the weight of the burden of stomach; Occlusal surface serious wear person loses normal releasing relation between the tooth, food impaction can occur, and then cause proximal surface dental caries and periodontal disease; Tooth heavy wear shortens, and can make under people's the face 1/3 highly to reduce, and this not only makes nasolabial fold deepen, and aged face occurs, but also the symptom of the dysfunction such as remporomandibular joint zone pain can occur.
Dental caries is one of the highest odontopathy of prevalence, is commonly called as " dental caries ".According to incompletely statistics, China's population has dental caries and adds up to more than 20 hundred million, and these dental caries 90% do not have to such an extent that be treatment.Dental caries is because dental plaque makes calcium and phosphorus dissolving in the enamel form the duck eye generation.Dental caries is very large to people's health hazard, and severe patient can cause systemic infection.Tooth begins corrosion and does not add treatment, and acid can destroy enamel, the dentine below the damage enamel.
Allly because causing the damaged person of tissue of tooth, dental caries, wedge shaped defect, wound etc. all need to repair, to recover its shape and function.When pathological changes has involved dental pulp, even when causing periapical disease, should treat first dental pulp, the tooth of going again inlays.That filler should have is nontoxic, wear-resisting, have that volume does not change after comprcssive strength, the filling, with the driving fit of nest hole, do not corroded by saliva or the performance such as dissolving, easy and simple to handle and color and luster be attractive in appearance.But there is no at present the material that meets above-mentioned performance fully, can only select comparatively suitable filler according to tooth defect position, stressed size and requirement attractive in appearance etc.Generally at the multiplex silver amalgam of backteeth, at labial teeth, particularly affect position multiselect resinae attractive in appearance.Mostly there is corrosion resistance in these packing materials, antifraying force is relatively poor and intensity is not high, with the problem such as the driving fit of nest hole is not tight.
The technology of the present invention is that nanosecond laser shock peening technology is applied in the clinical oral, can significantly improve tooth wearability and acid resistance, effectively prevents dental caries and tooth wear, also can be used for the surface reinforcement modifying of tooth filling material.After the permanent teeth growth is complete; the laser reinforcing surface modification treatment is carried out at its position easy to wear; form the enhanced protection layer on tooth enamel top layer; the tooth top layer has high-wearing feature, etch resistant properties simultaneously like this; can improve intensity and the hardness on tooth enamel top layer; effectively prevent the wearing and tearing of tooth; slow down dental plaque to the dissolving of calcium, phosphorus in the enamel; reach the purpose of strengthening teeth consolidating; and surface biological can absorb in the tooth strengthening modifying process; have biocompatibility, so that tooth can be compatible with blood, body fluid, thus corrosion resistance and the life-span of improving tooth.
Summary of the invention
The purpose of this invention is to provide a kind of nanosecond laser device that can improve tooth wearability and rotproofness, solve tooth, particularly artificial tooth or tooth material for repairing easily produce sour corrosion and wearing and tearing in acid oral fluid a difficult problem.
The invention provides with nanosecond laser and impact raising tooth wearability and acid proof device, comprise laser instrument and control system, numerical control superposing type work platforms, shockproof balance platform (comprising oil-free air compressor) and Computer Integrated Control System.
Wherein, described laser instrument is the neodymium glass Q-switched pulse laser.Its basic component comprises: Optical Maser System, laser power system, Laser Power Supply system and circulating cooling system four parts form.
Laser Control System is comprised of charhing unit, discharge trigger element, time-delay control unit and Q-switch high voltage unit.
Operation principle according to laser instrument, laser instrument adopts external control, outside panel sets the partial fixing parameter, the control of the computer realization laser-impact main technologic parameters by the outside, main control parameters is laser pulse percussion frequency, percussion, the output energy, the pulse percussion frequency of external control is from 0.1HZ-0.5HZ, the working pulse of outside will load on laser instrument always during work, in the situation that do not load the percussion pulse, this moment, laser instrument did not have Laser output, send the percussion pulse in the moment that needs impact to laser instrument, allow laser instrument export pulse laser, requirement according to impact process is different, the energy that impacts is different, can load the control voltage of 0-5V to the prime amplifier of laser instrument this moment by outer computer, regulates the output voltage of this amplifier, and then regulate the energy of the output pulse of laser instrument.
Wherein, he divides up and down two work platformses described numerical control superposing type work platforms, upper mounting plate is used for the adjusting of laser optical path, calibration and 45 degree laser total reflection mirrors, fixing of condenser lens, upper mounting plate is the straight-line platform of plane both direction, the direction of motion is respectively X, Y-direction, upper mounting plate directions X rectilinear motion is by the control of upper mounting plate X-direction servomotor, can accurately move along upper mounting plate X-direction straight line slide unit, upper mounting plate X-direction straight line slide unit is installed on the side of column, column is fixed on the base, upper mounting plate Y-direction rectilinear motion is by the control of upper mounting plate Y-direction servomotor, can accurately move along upper mounting plate Y-direction straight line slide unit, upper mounting plate Y-direction straight line slide unit is installed on the side of upper mounting plate X-direction straight line slide unit; Lower platform is that position of human body is regulated platform, have vertical and three linear motion platforms in plane, respectively X, Y, the Z direction, Z direction rectilinear motion is by the control of Z-direction servomotor, can accurately move along Z-direction straight line slide unit, Z-direction straight line slide unit is installed on the side of column, lower platform directions X rectilinear motion is by the control of lower platform X-direction servomotor, can accurately move along lower platform X-direction straight line slide unit, lower platform X-direction straight line slide unit is installed on the Z-direction straight line slide unit, at the side of lower platform X-direction straight line slide unit lower platform Y-direction straight line slide unit is installed, the lower platform Y-direction servomotor that moves through of lower platform Y-direction is controlled, the shock peening work platforms is installed on lower platform Y-direction straight line slide unit, fix at the enterprising pedestrian's body of shock peening workbench head position, all servomotors are connected with computer by fieldbus (CAN), movement by lower platform on the Computer Integrated Control System fine adjustment, guarantee that the laser beam that laser instrument sends is reflected into the vertical light velocity through 45 degree laser total reflection mirrors, focus on the dental surface that needs reinforcement by condenser lens again, strengthen again teeth consolidating.
Wherein, described Computer Integrated Control System adopts independently developed Open Distributed Control System,, laser instrument, numerical control superposing type work platforms, detection and miscellaneous function control connection are got up by fieldbus as host computer with a control computer, realize the information exchange of each link.Job requirement according to system, the controller of each link is responsible for the control of concrete object, mutual information exchange is undertaken by host computer, system can carry out manual operation and also can impact software according to auxiliary laser and control under the coordination of host computer and control, realize correlation function, the function of design is as follows:
Manual operation function:
1, the crawl of X, Y, Z, direction control, the displacement of each crawl can be set, and the stroke of setting is from 0.1-9mm
Or 0.1-9 degree;
2, the moving control of the length of X, Y, Z, direction, long moving speed can be set, and the speed of setting is from 1-50mm;
Long moving with crawl has interlocked relationship, and both can only select a kind of function simultaneously.
Miscellaneous function:
1, the switch of optical gate: laser instrument adopts the laser beam of optical gate to control, and laser pulse just can be exported when optical gate was opened;
2, light a lamp preheating and cancellation: owing to will carry out preheating before the neodymium glass laser work, the output energy that reaches thermal balance and laser pulse just can reach setting value, and this function namely designs for this reason;
3, frequency of impact setting: the percussion frequency of laser instrument after the system integration is set, and data are at 0.1-0.5HZ;
4, number of repetition setting: the number of times of setting repeated impacts and circulation impact;
5, the setting of surge voltage: the ceiling voltage that is used for setting laser device power supply preamplifier stage is set, and to determine the energy size of laser pulse, this function also is effective manually the time;
Impulsive control:
Single-impact: allow laser instrument carry out one-shot according to setup parameter;
Single hop impacts: system carries out the one section program that cursor is chosen in the frame of seizing of compiling;
Bump; The first program section that system seizes frame from volume begins to carry out successively all programs;
Repeated impacts; System repeats the program that the process block cursor is chosen, and carries out number of times and is determined by number of repetition;
Impact and finish: impact stops.
Beneficial effect of the present invention is:
1) height of laser works platform can change arbitrarily.The laser works platform of this device adopts shockproof balance platform (comprising oil-free air compressor), is connected with computer control system, and is simply easy by software operation; Workbench is mainly used in supporting laser instrument, optical lens, anchor clamps, human body etc.Numerical control superposing type work platforms is by motor and servomotor realization, and buying is easy, and wiring is simple, thereby is easy to realize; The present invention utilizes the mechanics effect of the plasma stock wave of laser-impact generation, so active force is little in the strengthening process, and action time is short.
2) wavelength of laser instrument and energy can be regulated according to strengthening effect.The original wavelength of laser instrument is 1064nm, through obtaining the 532nm wavelength behind two times of crystal double frequencies, obtains the 355nm wavelength behind three times of crystal double frequencies, 266nm wavelength behind four times of crystal double frequencies.The frequency multiplication process is realized by the motor device of motor control card control automatically by industrial computer control.The variation of energy can control realizes to YAG laser power supply control system by host computer.
3) control system easy realization simple in structure, low price, flexibility is higher.Control system adopts Computer Integrated Control System, because the system integration and upper and lower computer all are designed, designeds, and is modular, can to each function and relevant parameter is made amendment and version updating.Job requirement according to system, the controller of each link is responsible for the control of concrete object, mutual information exchange is undertaken by host computer, system can carry out manual operation and also can impact software according to auxiliary laser and control under the coordination of host computer and control, realize correlation function, different shock peening requirements, different compound modes can realize by the change software program.
Description of drawings
Fig. 1 Laser Control System block diagram.
Fig. 2 Computer Integrated Control System control block diagram.
Fig. 3 nanosecond laser shock peening teeth consolidating device schematic diagram.
Fig. 4 nanosecond laser is impacted and is injected the treatment process schematic diagram.
Fig. 5 tooth injection reinforcing is repaired schematic diagram.
The overall light path scattergram of Fig. 6 Optical Maser System.
Fig. 7 numerical control superposing type work platforms.
Among the figure, 1, shockproof balance platform; 2, oil-free air compressor; 3, nanosecond laser; 4, condenser lens; 5,45 degree laser total reflection mirrors; 6, numerical control superposing type work platforms; 7, Computer Integrated Control System; 8, nanosecond laser; 9, optical lens; 10, titanium alloy powder infusion; 11, titanium alloy powder remediation intensification layer; 12, enamel; 13, dentin; 14, corona; 15, base; 16, lower platform Y-direction servomotor; 17, lower platform Y-direction straight line slide unit; 18, upper mounting plate Y-direction servomotor; 19, shock peening work platforms; 20, upper mounting plate Y-direction straight line slide unit; 21, lower platform X-direction straight line slide unit; 22, lower platform X-direction servomotor; 23, Z-direction servomotor; 24, Z-direction straight line slide unit; 25, upper mounting plate X-direction straight line slide unit; 26, upper mounting plate X-direction servomotor; 27, column; 28, EBI;
LD: semiconductor laser; M
1: the 0o completely reflecting mirror; M
2: the 45o completely reflecting mirror; The PC:KD*P Pockers cell; PP: polarizer; PI: isolator; SL: beam expanding lens; PA, MA: neodymium glass rod.
The specific embodiment
Embodiment one: a. " therapist " puts on protective eye lens and gag, lies on the shock peening work platforms 19 (among Fig. 6 shown in 19) and carries out head position and fix, the tooth that strengthen in cleaning oral cavity and needing.
B. after cleaning, sterilizing, be coated with upper lip oil and gum protectant in the lip inboard, the dental surface of strengthening at need behind the curing gum protectant is evenly coated the titanium alloy powder for preparing, and coating thickness is about 1-2mm.
C. adopt apparatus of the present invention, on Computer Integrated Control System 7, impact software by auxiliary laser and carry out the adjusting of laser reinforcing teeth consolidating parameter, selecting laser output parameter is that output wavelength is 1.064 μ m, laser pulse width is 10～20ns, percussion power is selected 0.2GW/cm2, laser facula is selected 1～3mm(according to strengthening area definition), incident angle is elected 90 degree vertical incidence as, adjusts to best laser incoming position.
D. impact light paths by Computer Integrated Control System 7 adjustment, adjust lower numerical control superposing type work platforms 6, guarantee the tooth impact site accurately after, begin shock peening teeth consolidating shown in Figure 1.
E. after the laser reinforcing teeth consolidating is finished; sop up residual titanium alloy powder, use oral cavity special-purpose polishing cream polishing dental surface, take out gum protectant, gag etc.; after remediation intensification is finished; get final product with professional collutory cleaning oral cavity, Fig. 2 is injection effect schematic diagram, after laser reinforcing injects; dental surface hardness strengthens greatly; effectively prevent wearing and tearing and the dental caries of tooth, reach the purpose of strengthening teeth consolidating, thereby improve corrosion resistance and the life-span of tooth.
Embodiment two: in the strengthening process of artificial tooth and tooth filling material, adopt direct method, directly artificial tooth and packing material are fixed on the lower platform of numerical control superposing type work platforms 6, adjust the main technologic parameters of laser impact intensified teeth consolidating, selecting laser output parameter is that output wavelength is 1.054 μ m, laser pulse width is 10 ns, and percussion power is selected 0.2GW/cm
2, set and impact number of times and just can strengthen modification, after impact is finished the impact position rest and reorganize, polishing, after this modification, its wear-resisting acidproof life-span was about more than 20 years, basically can satisfy the life requirements of Buccodental.
Claims (3)
1. a nanosecond laser device that improves the tooth abrasion-proof corrosion-proof is characterized in that, comprises Computer Integrated Control System (7), laser instrument (3), numerical control superposing type work platforms (6), shockproof balance platform (1); Described laser instrument (3) is installed on the shockproof balance platform (1); Described numerical control superposing type work platforms (6) is divided into up and down two work platformses, and upper mounting plate is fixed 45 degree laser total reflection mirrors (5), condenser lens (4), and described 45 degree laser total reflection mirrors (5) point to the laser head of laser instrument (3); Upper mounting plate is two the straight-line platforms in plane, the direction of motion is respectively X, Y-direction, upper mounting plate directions X rectilinear motion is by upper mounting plate X-direction servomotor (26) control, mobile along upper mounting plate X-direction straight line slide unit (25), upper mounting plate X-direction straight line slide unit (25) is installed on the side of column (27), and column (27) is fixed on the base (15); Upper mounting plate Y-direction rectilinear motion is by upper mounting plate Y-direction servomotor (18) control, and mobile along upper mounting plate Y-direction straight line slide unit (20), upper mounting plate Y-direction straight line slide unit (20) is installed on the side of upper mounting plate X-direction straight line slide unit (25); Lower platform is that position of human body is regulated platform, have vertical and three linear motion platforms in plane, respectively X, Y, the Z direction, Z direction rectilinear motion is by Z-direction servomotor (23) control, mobile along Z-direction straight line slide unit (24), Z-direction straight line slide unit (24) is installed on the side of column (27), lower platform directions X rectilinear motion is by lower platform X-direction servomotor (22) control, mobile along lower platform X-direction straight line slide unit (21), lower platform X-direction straight line slide unit (21) is installed on the Z-direction straight line slide unit (24), lower platform Y-direction straight line slide unit (17) is installed in the side of lower platform X-direction straight line slide unit (21), and shock peening work platforms (19) is installed on lower platform Y-direction straight line slide unit (17); The lower platform Y-direction servomotor (16) that moves through of lower platform Y-direction is controlled, all servomotors of upper lower platform are connected with computer (7) by fieldbus (CAN), by the movement of lower platform on the Computer Integrated Control System fine adjustment.
2. a kind of nanosecond laser device that improves the tooth abrasion-proof corrosion-proof according to claim 1, it is characterized in that, described Computer Integrated Control System, couples together laser instrument (3), numerical control superposing type work platforms (6) and shockproof balance platform (1) by fieldbus as host computer with a control computer.
3. a kind of nanosecond laser device that improves the tooth abrasion-proof corrosion-proof according to claim 1 is characterized in that, described laser instrument (3) is the neodymium glass Q-switched pulse laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065438 CN102166138B (en) | 2011-03-18 | 2011-03-18 | Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065438 CN102166138B (en) | 2011-03-18 | 2011-03-18 | Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102166138A CN102166138A (en) | 2011-08-31 |
| CN102166138B true CN102166138B (en) | 2013-01-23 |
Family
ID=44487587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110065438 Expired - Fee Related CN102166138B (en) | 2011-03-18 | 2011-03-18 | Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102166138B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252588B (en) * | 2013-05-20 | 2015-02-04 | 江苏大学 | Precise micro-forming device and method thereof based on laser continuous stamping plasticine technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462612A (en) * | 2003-06-23 | 2003-12-24 | 中国人民解放军第四军医大学 | Laser stereo shaping method for preparing buccal metal prosthesis |
| CN1686058A (en) * | 2005-04-28 | 2005-10-26 | 上海隐齿丽医学技术有限公司 | Computer assisted hidden tooth abnormal correction system |
| CN1857160A (en) * | 2006-05-16 | 2006-11-08 | 杨诚 | Positioning precision detecting method and device for medical radiotherapy equipment |
| CN2845994Y (en) * | 2005-12-20 | 2006-12-13 | 天津市力能激光技术有限公司 | Laser artificial tooth welder |
| CN1931110A (en) * | 2005-08-24 | 2007-03-21 | 德固萨有限责任公司 | Method of determining the shape of a dental technology object and apparatus for per-forming the method |
| CN101450010A (en) * | 2007-12-06 | 2009-06-10 | 北京大学口腔医学院 | Digital mouth prosthesis making device |
-
2011
- 2011-03-18 CN CN 201110065438 patent/CN102166138B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462612A (en) * | 2003-06-23 | 2003-12-24 | 中国人民解放军第四军医大学 | Laser stereo shaping method for preparing buccal metal prosthesis |
| CN1686058A (en) * | 2005-04-28 | 2005-10-26 | 上海隐齿丽医学技术有限公司 | Computer assisted hidden tooth abnormal correction system |
| CN1931110A (en) * | 2005-08-24 | 2007-03-21 | 德固萨有限责任公司 | Method of determining the shape of a dental technology object and apparatus for per-forming the method |
| CN2845994Y (en) * | 2005-12-20 | 2006-12-13 | 天津市力能激光技术有限公司 | Laser artificial tooth welder |
| CN1857160A (en) * | 2006-05-16 | 2006-11-08 | 杨诚 | Positioning precision detecting method and device for medical radiotherapy equipment |
| CN101450010A (en) * | 2007-12-06 | 2009-06-10 | 北京大学口腔医学院 | Digital mouth prosthesis making device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102166138A (en) | 2011-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Walsh | The current status of laser applications in dentistry | |
| EP0746262B1 (en) | Device for the ultrasonic preparation of human or animal hard or soft tissues and tooth or bone replacement materials | |
| Goel et al. | Effect of cavity depth on stresses in a restored tooth | |
| US9168114B2 (en) | Method of making a dental prosthesis | |
| Jacobson et al. | Root surface texture after different scaling modalities | |
| Matsumoto et al. | Effect of a novel Er: YAG laser in caries removal and cavity preparation: a clinical observation | |
| Goel et al. | Clinical implications of the response of enamel and dentin to masticatory loads | |
| McLean | Limitations of posterior composite resins and extending their use with glass ionomer cements. | |
| Yassaei et al. | A comparison of shear bond strengths of metal and ceramic brackets using conventional acid etching technique and Er: YAG laser etching | |
| FR2892618B1 (en) | DEVICE FOR PREPARING AND SHUTTING THE ENDODONTIC CAVITY OF A TOOTH | |
| CN102166138B (en) | Nanosecond laser device capable of improving abrasion resistance and corrosion resistance of tooth | |
| Park et al. | Curing units’ ability to cure restorative composites and dual-cured composite cements under composite overlay | |
| JPH0191853A (en) | Artificial tooth | |
| Sous et al. | Ultrasonic sulcus penetration: a new approach for full crown preparations. | |
| Meghana et al. | Potential of Lasers in the Realm of Aesthetic Dentistry: A Narrative Review | |
| CN112535548B (en) | Supragingival scaling device based on high-repetition-frequency femtosecond pulse laser | |
| Arcoria et al. | Pulpal effects of argon: fluoride excimer laser irradiation and acid-etching of rat molar enamel | |
| Alfredo et al. | Evaluation of retention of post-core system cemented with different materials on dentine surfaces treated with EDTA or Er: YAG laser irradiation | |
| Karra et al. | Lasers in orthodontics | |
| CN209808608U (en) | Right-bent 115-degree magnetostrictive working tip | |
| Sikri et al. | Innovative Prosthodontic Solution: DMLS Metal Ceramic Restoration for Endodontically Treated Tooth-A Compelling Case Report | |
| Amiri et al. | Comparing the Effectiveness of GLUMA and 940 nm Laser for Improving Crown Retention with Self-Adhesive Cement | |
| Daher | Optimizing the restoration of posterior endodontically treated teeth | |
| Hwang et al. | A study on the processing of dental ceramic composites by using laser | |
| Jiyao | Clinical Management of Dental Caries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 528061 Guangdong Province, Foshan City Industrial Zone, Nanzhuang Town Zinan Macao Patentee after: Jiangsu University Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: Jiangsu University |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 212114 Zhenjiang, Zhejiang Province, Dantu high capital street, Xiangshan Road, No. 1 Patentee after: Jiangsu University Address before: 528061 Guangdong Province, Foshan City Industrial Zone, Nanzhuang Town Zinan Macao Patentee before: Jiangsu University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20160318 |