CN110411770A - Electric oral cavity cleaning appliance method of evaluating performance - Google Patents
Electric oral cavity cleaning appliance method of evaluating performance Download PDFInfo
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- CN110411770A CN110411770A CN201910662198.2A CN201910662198A CN110411770A CN 110411770 A CN110411770 A CN 110411770A CN 201910662198 A CN201910662198 A CN 201910662198A CN 110411770 A CN110411770 A CN 110411770A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Abstract
The embodiment of the invention discloses a kind of electric oral cavity cleaning appliance method of evaluating performance, including step S1, the cleaning assessment of facing spot is carried out to electric oral cavity cleaner, obtain the cleaning evaluation of facing spot；Step S2, spot cleaning assessment carrying out teeth space to electric oral cavity cleaner obtains spot cleaning evaluation between teeth space；Step S3, plaque cleaning assessment is carried out to electric oral cavity cleaner, obtains plaque cleaning evaluation；Step S4, utensil performance evaluation is carried out according to spot cleaning evaluation, plaque cleaning evaluation between facing spot cleaning evaluation, teeth space.Evaluation method of the invention be successively between facing, teeth space, plaque cleaning and gingiva abrasion test and assess, the facing spot cleaning obtained according to assessment is evaluated, spot cleaning is evaluated between teeth space, plaque cleaning evaluation and gingiva abrasion evaluation are compared with corresponding evaluation standard value, utensil performance evaluation, the performance of comprehensive evaluation utensil are obtained after comprehensive comparison.
Description
Technical field
The present embodiments relate to Oral cleaner evaluation method technical fields, and in particular to a kind of electric oral cavity cleaning
Utensil method of evaluating performance.
Background technique
With the increasingly raising of living standard, present people become more concerned with oral hygiene and health, and with toothbrush brush
Tooth, present oral hygiene standard has been not achieved in the mode and effect of this traditional oral health, and Pediatric Oral Emergency is defended
The raw concern for being also increasingly subject to people, it is imperative to update.Popularizing for oral cavity cleaning irrigator, solves in oral hygiene
Many situations.Teeth space depths toothbrush can not be touched the swill, dirt, harmful bacteria at position by oral cavity cleaning irrigator
It removes, reduces inflammation, degerming rate is up to 90% or more.Cooperation PMTC treatment degerming is up to 99%, and oral hygiene is made to reach mark
Standard, but the method for evaluating performance of existing electric oral cavity cleaning appliance is too simple, is unable to satisfy high standard.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of electric oral cavity cleaning appliance method of evaluating performance, to solve the prior art
The problem of method of evaluating performance of middle electric oral cavity cleaning appliance is too simple, is unable to satisfy high standard.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
A kind of electric oral cavity cleaning appliance method of evaluating performance according to a first aspect of the embodiments of the present invention, including
Following steps:
Step S1, the cleaning assessment of facing spot is carried out to electric oral cavity cleaner, obtains the cleaning evaluation of facing spot；
Step S2, spot cleaning assessment carrying out teeth space to electric oral cavity cleaner obtains spot cleaning evaluation between teeth space；
Step S3, plaque cleaning assessment is carried out to electric oral cavity cleaner, obtains plaque cleaning evaluation；
Step S4, utensil is carried out according to spot cleaning evaluation, plaque cleaning evaluation between facing spot cleaning evaluation, teeth space
Performance evaluation.
Further, it is additionally provided in the electric oral cavity cleaning appliance method of evaluating performance and electric oral cavity cleaner is carried out
Gingiva abrasion assessment, obtains gingiva abrasion evaluation, and gingiva abrasion evaluation is added in S4 and carries out utensil performance evaluation.
Further, the method for the gingiva abrasion assessment is as follows: electric oral cavity cleaner is fixed on experimental bench,
Gum substitute is placed on sliding stand；Sliding stand controls gum substitute using the fixed electronic mouth of frequency and force value friction
Chamber cleaner, rub 15-24h；The real area for measuring wear surface and detection faces, makes the real area of wear surface compare detection faces
Real area, obtain gingiva abrasion rate；Gingiva abrasion rate is evaluated, gingiva abrasion evaluation is obtained；It is cleaned according to facing spot
Spot cleaning evaluation, plaque cleaning evaluation and gingiva abrasion evaluation carry out utensil performance evaluation between evaluation, teeth space.
Further, the method for the facing spot cleaning assessment is as follows:
At least 6 spot carriers with specific stain are individually secured to the upper lower teeth surfaces of denture model, on
Under each patch half the piece number, and be uniformly distributed, the spot area before record cleans on every spot carrier；
Start power-driven device for cleaning in the case where toothpaste is not added, carries out clean operation according to preset path；
After cleaning, remaining spot area on every spot carrier, the spot area change of cleaner front and back, meter are calculated
Greasiness removal rate is calculated, formula is as follows:
In formula:
P1- facing greasiness removal rate, %；
s1- clean preceding spot area, unit mm2；
s2Spot area after-cleaning, unit mm2；
Using greasiness removal rate compared with the greasiness removal rate of ordinary toothbrush, greasiness removal increase rate is calculated, formula is such as
Under:
Pi1=P1-Pc1
Pi- facing greasiness removal increase rate, %；
Pc- ordinary toothbrush greasiness removal rate, %；
The cleaning evaluation of facing spot is finally obtained according to greasiness removal increase rate.
Further, the specific stain includes tea stain, cigarette stain, coffee stain, and preparation method is respectively as follows: the tea
The preparation method of stain is, using 200mL boiled water and 1.2g black tea, to cover and impregnate 5min, clean spot carrier is immersed in red
In tea, takes out and dry after 7d；The preparation method of the coffee stain is immersion process or furnace drying method；Wherein, immersion process is to make
It with 200mL boiled water and 15g instant coffee, covers and impregnates 5min, clean spot carrier is immersed in coffee, take out and dry in the air after 7d
It is dry；Alternatively, furnace drying method is, using 200mL boiled water and 15g instant coffee, covers and impregnate 5min, clean spot carrier is put
In 60 DEG C of baking ovens, 1.0mL coffee is coated uniformly on spot carrier surface with dropper, primary, painting in one day was applied every two hours
Four times, baking oven is closed after 3d and is taken out；The preparation method of the cigarette stain is that clean spot carrier is face-up put into cigar lighter
Interior, concurrent cigarette 160, cigarette takes out after going out；Detected after preparing specific stain, if in testing result specific stain face
Product is lower than the 80% of the spot carrier gross area, need to prepare again.
Further, the method that spot cleaning is tested and assessed between the teeth space are as follows:
The sticky spot that 1.00g is prepared uniformly is coated to adjacent two panels spot carrier docking, and coating width is not low
It in 5mm, is coated at three groups of docking altogether, spot area before record cleans.
Start electric oral cavity cleaner in the case where toothpaste is not added, is cleaned at docking according to preset path.
After cleaning, remaining spot area at each docking, the variation of the cleaner specific spot area in front and back, meter are calculated
Greasiness removal rate between calculation teeth space, calculation formula are as follows:
In formula:
P2Greasiness removal rate, % between-teeth space；
s3- clean preceding spot area, unit mm2；
s4Spot area after-cleaning, unit mm2；
Later, by greasiness removal rate between teeth space, greasiness removal rate compares between the teeth space of ordinary toothbrush, calculates spot and goes
Except increase rate, formula is as follows:
Pi2=P2-Pc2
Pi2Greasiness removal increase rate, % between-teeth space；
P2Greasiness removal rate, % between-teeth space；
Pc2Greasiness removal rate, % between the teeth space of-ordinary toothbrush；
Spot cleaning evaluation between teeth space is finally obtained according to greasiness removal increase rate.
Further, the method for the plaque cleaning assessment are as follows:
Bacteria suspension is prepared as, by 10g meet wheat flour in GB 1355-86 to standard flour requirement, 100mL distilled water,
25mL is not added to boil after the Pumpkin Juice that water is squeezed with slow grinding machine mixes and stir evenly, and obtains mixing suspension, and mixing suspension is put into pressure
Sterilizing in steam sterilization pan, sterilising temp are not less than 121 DEG C, and sterilization time is not less than 20min, when sterile spot room temperature is cooling
Afterwards, mixing suspension is uniformly mixed with the bacterium solution 1:1 of 109CFU/mL~1010CFU/mL, obtains bacteria suspension.
Bacteria suspension is respectively coated to the surface of spot carrier and comparison vehicle, it is dry to be not less than 1h, then to electronic mouth
Chamber cleaner is cleaned according to surface of the preset path to spot carrier.
After cleaning, spot carrier surface and comparison vehicle microorganism remained on surface are recycled respectively, to return
It receives liquid and carries out culture counting, the area and viable count of plaque are remained on cleaner front and back spot carrier, calculates separately tooth bacterium
Spot degerming rate and removal rate；
The calculation formula of degerming rate are as follows:
In formula:
R --- degerming rate, %；
A --- the viable count of spot carrier recovery, unit CFU/mL；
B --- the viable count of comparison vehicle recycling, unit CFU/mL；
The calculation formula of removal rate are as follows:
In formula:
P3- plaque removal rate, %；
s5- clean preceding plaque area, unit mm2；
s6- cleaning Dental Plaque area, unit mm2；
The calculation formula of plaque removal increase rate are as follows:
Pi2=P2-Pc2
Pi2- plaque removes increase rate, %；
Pc2The plaque removal rate of-ordinary toothbrush, %；
Finally evaluate to obtain plaque cleaning evaluation with increase rate is removed according to the degerming rate of plaque.
Further, the preparation method of the bacterium solution is to put Streptococcus mutans, Streptococcus sanguis, Lactobacillus casei, viscosity
Line bacterium, streptococcus salivarius are cultivated activation for 24 hours respectively, and the proportion of culture solution is the peptone 0.5% mixed under room temperature, more peptones
0.5%, beans peptone 0.5%, sucrose 3%, NaCl 0.3%, KH2PO40.3%, K2HPO40.2%, K2CO30.1%, culture solution
PH value be 7.0；Culture activation after transfer again culture for 24 hours, be centrifuged, remove supernatant, wash at least 3 times with sterile saline, general
Mycelium dilution to OD540=1, centrifugation stays precipitating, then mixes the culture solution of 5 kinds of bacterium in equal volume, obtain bacterium solution.
The embodiment of the present invention has the advantages that
A kind of electric oral cavity cleaning appliance method of evaluating performance described in the embodiment of the present invention successively cleans electric oral cavity
Device carries out spot cleaning assessment, plaque cleaning assessment and gingiva abrasion assessment between facing spot cleaning assessment, teeth space, according to
Test and assess obtained facing spot cleaning evaluation, between teeth space spot cleaning evaluation, plaque cleaning evaluation and gingiva abrasion evaluation with
The comparison of corresponding evaluation standard value, obtains utensil performance evaluation after comprehensive comparison, thus comprehensive evaluation electricity
The performance of dynamic Oral cleaner.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
A kind of electric oral cavity cleaning appliance method of evaluating performance of the embodiment of the present invention, comprising the following steps:
Step S1, the cleaning assessment of facing spot is carried out to electric oral cavity cleaner, obtains the cleaning evaluation of facing spot；
Step S2, spot cleaning assessment carrying out teeth space to electric oral cavity cleaner obtains spot cleaning evaluation between teeth space；
Step S3, plaque cleaning assessment is carried out to electric oral cavity cleaner, obtains plaque cleaning evaluation；
Step S4, utensil is carried out according to spot cleaning evaluation, plaque cleaning evaluation between facing spot cleaning evaluation, teeth space
Performance evaluation.
It is specifically described the implementation method of each step in above-mentioned S1-S4 below, spot carrier is preferably hydroxyl in the present embodiment
Base apatite piece.
1, facing spot cleaning assessment
At least 6 spot carriers with specific stain are individually secured to the upper lower teeth surfaces of denture model, on
Under each patch half the piece number, and be uniformly distributed, the spot area before record cleans on every spot carrier.
Start power-driven device for cleaning in the case where toothpaste is not added, carries out clean operation according to preset path.
After cleaning, remaining spot area on every spot carrier, the spot area change of cleaner front and back, meter are calculated
Calculate the facing greasiness removal rate of electric oral cavity cleaner.
The formula of the facing greasiness removal rate of electric oral cavity cleaner is as follows:
In formula:
P1The facing greasiness removal rate of-electric oral cavity cleaner, %；
s1The spot area of spot carrier surface, unit mm before-cleaning2；
s2The spot area of spot carrier surface, unit mm after-cleaning2。
Compared with the facing greasiness removal rate with ordinary toothbrush of electric oral cavity cleaner, electric oral cavity cleaner is calculated
Greasiness removal increase rate, formula is as follows:
Pi1=P1-Pc1
PiThe facing greasiness removal increase rate of-electric oral cavity cleaner, %；
PcThe facing greasiness removal rate of-ordinary toothbrush under same test condition, %；
In order to increase the accuracy of data, the utensil of same specification will at least be tested 5 times under identical conditions, try every time
Greasiness removal rate and greasiness removal increase rate are calculated after testing, and take its 5 times arithmetic mean of instantaneous value as final result.
The cleaning evaluation of facing spot is finally obtained according to facing greasiness removal increase rate, if facing greasiness removal increase rate <
80%, then the cleaning of facing spot is evaluated as unqualified, terminates assessment；If facing greasiness removal increase rate > 80%, facing spot
Cleaning is evaluated as qualification, continues other assessments.
Specific stain used in the facing spot cleaning assessment includes tea stain, cigarette stain, coffee stain, preparation side
Method difference is as follows:
A, tea stain
The preparation method of the tea stain is, using 200mL boiled water and 1.2g black tea, to cover and impregnate 5min, by clean dirt
Stain carrier is immersed in black tea, is taken out and is dried after 7d.
B, coffee stain
The preparation method of the coffee stain is immersion process or furnace drying method.
Immersion process is using 200mL boiled water and 15g instant coffee, to cover and impregnate 5min, clean spot carrier is soaked
Bubble takes out after 7d and dries in coffee；Alternatively,
Furnace drying method is, using 200mL boiled water and 15g instant coffee, to cover and impregnate 5min, clean spot carrier is put
In 60 DEG C of baking ovens, 1.0mL coffee is coated uniformly on spot carrier surface with dropper, primary, painting in one day was applied every two hours
Four times, baking oven is closed after 3d and is taken out.
C, cigarette stain
The preparation method of the cigarette stain is face-up to be put into clean spot carrier in cigar lighter, concurrent cigarette 160
Root, cigarette take out after going out.
It is detected after preparing specific stain, if the area of specific stain is lower than the total face of spot carrier in testing result
Long-pending 80% need to be prepared again.
2, spot cleaning assessment between teeth space
Between the teeth space spot cleaning test and assess used in specific stain include stickiness spot and graininess spot,
In, the preparation of year property spot includes 10g wheat flour (requirement for meeting GB1355-86 to standard flour), 100ml distilled water, mixing
After boil and stir evenly, 10g blueness mustard thick chilli sauce (meeting the requirement in SB/T10755-2012 to green mustard thick chilli sauce) then is added, mixing is equal
It is even；The preparation of graininess spot includes that will toast jerked beef (to meet in DB15/432-2006 and want baking jerked beef
Ask) it crushes, 60 meshes are crossed, by the particle after sieving according to GB5009.3-2016 " moisture in national food safety standard food
Measurement " it is dry to constant weight, as spare in drier.
The sticky spot that 1.00g is prepared uniformly is coated to adjacent two panels spot carrier docking, and coating width is not low
It in 5mm, is coated at three groups of docking altogether, spot area before record cleans.
Start electric oral cavity cleaner in the case where toothpaste is not added, is cleaned at docking according to preset path.
After cleaning, remaining spot area at each docking, the variation of the cleaner specific spot area in front and back, meter are calculated
Greasiness removal rate between calculation teeth space.Calculation formula is as follows:
In formula:
P2Greasiness removal rate, % between-teeth space；
s3- clean preceding spot area, unit mm2；
s4Spot area after-cleaning, unit mm2；
Later, by greasiness removal rate between teeth space, greasiness removal rate compares between the teeth space of ordinary toothbrush, calculates spot and goes
Except increase rate, formula is as follows:
Pi2=P2-Pc2
Pi2Greasiness removal increase rate, % between-teeth space；
P2Greasiness removal rate, % between-teeth space；
Pc2- ordinary toothbrush greasiness removal rate, % between the teeth space under same test condition；
In order to increase the accuracy of data, the utensil of same specification will at least be tested 5 times under identical conditions, try every time
Greasiness removal rate and greasiness removal increase rate are calculated after testing, and take its 5 times arithmetic mean of instantaneous value as final result.
Spot cleaning evaluation between teeth space is finally obtained according to greasiness removal increase rate between teeth space, if greasiness removal mentions between teeth space
High rate < 80%, then between teeth space spot cleaning be evaluated as it is unqualified, and terminate assessment；If greasiness removal increase rate between teeth space >
80%, then spot cleaning is evaluated as qualification between teeth space, continues other assessments.
3, plaque cleaning assessment
Bacteria suspension is prepared as, by 10g meet wheat flour in GB 1355-86 to standard flour requirement, 100mL distilled water,
25mL is not added to boil after the Pumpkin Juice that water is squeezed with slow grinding machine mixes and stir evenly, and obtains mixing suspension, and mixing suspension is put into pressure
Sterilizing in steam sterilization pan, sterilising temp are not less than 121 DEG C, and sterilization time is not less than 20min, when sterile spot room temperature is cooling
Afterwards, mixing suspension is uniformly mixed with the bacterium solution 1:1 of 109CFU/mL~1010CFU/mL, obtains bacteria suspension.
Bacteria suspension is respectively coated to the surface of spot carrier and comparison vehicle, it is dry to be not less than 1h, then to electronic mouth
Chamber cleaner is cleaned according to surface of the preset path to spot carrier.
After cleaning, spot carrier surface and comparison vehicle microorganism remained on surface are recycled respectively, to return
It receives liquid and carries out culture counting, the area and viable count of plaque are remained on cleaner front and back spot carrier, calculates separately tooth bacterium
Spot degerming rate and removal rate.Wherein, the calculation formula of degerming rate are as follows:
In formula:
R --- degerming rate, %；
A --- the viable count of spot carrier recovery, unit CFU/mL.
B --- the viable count of comparison vehicle recycling, unit CFU/mL.
The calculation formula of removal rate are as follows:
In formula:
P3- plaque removal rate, %；
s5- clean preceding plaque area, unit mm2；
s6- cleaning Dental Plaque area, unit mm2；
In order to increase the accuracy of data, the utensil of same specification will at least be tested 5 times under identical conditions, try every time
Greasiness removal rate and greasiness removal increase rate are calculated after testing, and take its 5 times arithmetic mean of instantaneous value as final result.
If plaque removal rate < 80%, plaque degerming be evaluated as it is unqualified, then plaque cleaning be evaluated as not conforming to
Lattice terminate assessment；If plaque removal rate > 80%, plaque degerming is evaluated as qualification, continues plaque removal increase rate and comments
Valence.
The calculation formula of plaque removal increase rate are as follows:
Pi3=P3-Pc3
Pi3- plaque removes increase rate, %；
Pc3The plaque removal rate of-ordinary toothbrush under same test condition, %；
In order to increase the accuracy of data, the utensil of same specification will at least be tested 5 times under identical conditions, try every time
Greasiness removal rate and greasiness removal increase rate are calculated after testing, and take its 5 times arithmetic mean of instantaneous value as final result.
If plaque remove increase rate < 80%, degerming increase rate be evaluated as it is unqualified, then plaque cleaning be evaluated as not
Qualification terminates assessment；If plaque removes increase rate > 80%, degerming increase rate is evaluated as qualification, then plaque cleaning is evaluated as
It is qualified.
The preparation method of bacterium solution used in the above method:
By Streptococcus mutans Streptococcus mutans CGMCC 1.2500 (ATCC 35668), Streptococcus sanguis
Streptococcus sanguinis CGMCC 1.2497 (ATCC 49295), Lactobacillus casei Lactobacillus
Casei CGMCC 1.8727, actinomyces viscosus ActinomycesviscosusATCC 27044, streptococcus salivarius
Streptococcus salivarius CGMCC 1.2498 (ATCC 7073) is cultivated activation for 24 hours respectively, culture solution
Proportion be room temperature under mix peptone 0.5%, more peptones 0.5%, beans peptone 0.5%, sucrose 3%, NaCl 0.3%,
KH2PO40.3%, K2HPO40.2%, K2CO30.1%, the pH value of culture solution are 7.0；Culture activation after transfer again culture for 24 hours,
It is centrifuged, removes supernatant, washed at least 3 times with sterile saline, by mycelium dilution to OD540=1, precipitating is stayed in centrifugation, then by 5
The culture solution of kind bacterium mixes in equal volume, obtains bacterium solution.
The activation of strain and the preparation of bacterium solution:
By code test strain inoculated on inclined-plane solid medium, after being cultivated for 24 hours under the conditions of (37 ± 1) DEG C, at 5 DEG C
Preservation (must not exceed 1 month) at~10 DEG C, as slant preservation bacterium.
Slant preservation bacterium is transferred on Solid media for plates, (24 ± 1) h is cultivated under the conditions of (37 ± 1) DEG C, daily
Switching 1 time is no more than 2 weeks.3~14 generations, for 24 hours interior Fresh bacterial cultures transferred should be used when test.
1 ring~2 ring Fresh bacterials are scraped from fresh cultured object with oese, are added in appropriate phosphate buffer, and according to
Secondary to do 10 times of gradient dilution liquid, selecting bacterial concentration is the dilution of 106CFU/mL as test bacterium solution, by GB 4789.2
Method operation.
The instrument used: the biochemical cultivation case of accuracy of temperature control ± 1 DEG C, 5 DEG C~10 DEG C of refrigerating box, 0 DEG C~300 DEG C dry
Dry case, superclean bench (100 grades) or Biohazard Safety Equipment, pressure steam sterilizer, plate, test tube, liquid-transfering gun, oese, wine
The laboratories such as smart lamp common tool.
The finally qualified situation of spot cleaning evaluation, plaque cleaning evaluation between facing spot cleaning evaluation, teeth space
Lower progress utensil performance evaluation, the specific judgement schematics of utensil performance evaluation are as follows:
Wherein, P > 30% is A grades of evaluations；
30% >=P > 27% is B grades of evaluations；
27% >=P > 25% is C grades of evaluations；
25% >=P > 20% is D grades of evaluations (regular grade).
4, gingiva abrasion is evaluated
Progress gingiva abrasion assessment after step s 3, the side of the gingiva abrasion assessment are preferable in the present embodiment
Method is as follows:
Electric oral cavity cleaner is fixed on experimental bench, gum substitute (such as silica gel pad) is placed in sliding stand
On；Sliding stand controls gum substitute using fixed frequency and force value friction electric oral cavity cleaner, and rub 15-24h；Friction
After, the real area of wear surface and gum substitute is measured, the real area of wear surface is made to compare the reality of gum substitute
Interphase product, obtains wear rate, the specific method is as follows:
The camera lens of video camera and etalon are now kept into distance to a declared goal A, takes pictures to etalon, determines standard volume
Has the proportionate relationship of the unit sizes respective number of pixels in unit sizes and photo.
The camera lens of video camera and gum substitute are kept at a distance A again, the wear surface of gum substitute is towards video camera mirror
Head first manually marks detection faces profile on gum substitute, then takes pictures to gum substitute, then manually enclose respectively
Determine the range of wear surface and detection faces in photo, can be drawn a circle to approve by the form difference of wear surface and gum substitute, by
It is recessed on gum substitute in wear surface, gum substitute smooth surface, and the surface of wear surface and gum substitute
Form has apparent difference, thus by naked eyes it may determine that wear surface range profile, and detection faces according to label draw a circle to approve.
Then the wear surface area of control on piece delineation is counted in the pixel for being included in detection faces area respectively；So
The area of wear surface on gum substitute is calculated by the pixel number of wear surface in photo and the proportionate relationship afterwards, and is passed through
The pixel number of detection faces and the proportionate relationship calculate the area of wear surface on gum substitute in photo.
After the real area for calculating wear surface and detection faces, the area ratio of the wear surface and detection faces is calculated, is obtained
To gingiva abrasion rate Pi4If wear rate is bigger, illustrate that abrasion is more serious, the anti-wear property of electric oral cavity cleaner is poorer；Instead
It, wear rate is smaller, illustrates that abrasion is slighter, illustrates that the anti-wear property of electric oral cavity cleaner is stronger.In order to increase data
Accuracy, at least detected under identical conditions 5 times, calculate separately at least detect 5 wear rates arithmetic mean of instantaneous value.
If gingiva abrasion rate > 20%, gingiva abrasion is evaluated as unqualified, termination evaluation；Conversely, if the gum detected
Wear rate < 20%, then gingiva abrasion is evaluated as qualification.
Finally according to spot cleaning evaluation, plaque cleaning evaluation and gingiva abrasion between facing spot cleaning evaluation, teeth space
Evaluation is done and obtains utensil performance evaluation, the specific judgement schematics of utensil performance evaluation are as follows:
Wherein, P > 30% is A grades of evaluations；
30% >=P > 27% is B grades of evaluations；
27% >=P > 25% is C grades of evaluations；
25% >=P > 20% is D grades of evaluations (regular grade).
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of electric oral cavity cleaning appliance method of evaluating performance, which comprises the following steps:
Step S1, the cleaning assessment of facing spot is carried out to electric oral cavity cleaner, obtains the cleaning evaluation of facing spot；
Step S2, spot cleaning assessment carrying out teeth space to electric oral cavity cleaner obtains spot cleaning evaluation between teeth space；
Step S3, plaque cleaning assessment is carried out to electric oral cavity cleaner, obtains plaque cleaning evaluation；
Step S4, utensil performance is carried out according to spot cleaning evaluation, plaque cleaning evaluation between facing spot cleaning evaluation, teeth space
Evaluation.
2. electric oral cavity cleaning appliance method of evaluating performance according to claim 1, it is characterised in that: the electric oral cavity
It is additionally provided in cleaning appliance method of evaluating performance and gingiva abrasion assessment is carried out to electric oral cavity cleaner, obtained gingiva abrasion and comment
Gingiva abrasion evaluation is added in S4 and carries out utensil performance evaluation for valence.
3. electric oral cavity cleaning appliance method of evaluating performance according to claim 2, which is characterized in that the gingiva abrasion
Property assessment method it is as follows:
Electric oral cavity cleaner is fixed on experimental bench, gum substitute is placed on sliding stand；
Sliding stand controls gum substitute using fixed frequency and force value friction electric oral cavity cleaner, and rub 15-24h；
The real area for measuring wear surface and detection faces, makes the real area of wear surface compare the real area of detection faces, obtains
Gingiva abrasion rate；
Gingiva abrasion rate is evaluated, gingiva abrasion evaluation is obtained；
According to spot cleaning evaluation, plaque cleaning evaluation and gingiva abrasion evaluation between facing spot cleaning evaluation, teeth space
Carry out utensil performance evaluation.
4. electric oral cavity cleaning appliance method of evaluating performance according to claim 1, which is characterized in that the facing spot
The method for cleaning assessment is as follows:
At least 6 spot carriers with specific stain are individually secured to the upper lower teeth surfaces of denture model, up and down respectively
Half the piece number is pasted, and is uniformly distributed, the spot area before record cleans on every spot carrier；
Start power-driven device for cleaning in the case where toothpaste is not added, carries out clean operation according to preset path；
After cleaning, remaining spot area on every spot carrier is calculated, the spot area change of cleaner front and back calculates dirty
Stain removal rate, formula are as follows:
In formula:
P1- facing greasiness removal rate, %；
s1- clean preceding spot area, unit mm2；
s2Spot area after-cleaning, unit mm2；
Using greasiness removal rate compared with the greasiness removal rate of ordinary toothbrush, greasiness removal increase rate is calculated, formula is as follows:
Pi1=P1-Pc1
Pi- facing greasiness removal increase rate, %；
Pc- ordinary toothbrush greasiness removal rate, %；
The cleaning evaluation of facing spot is finally obtained according to greasiness removal increase rate.
5. electric oral cavity cleaning appliance method of evaluating performance according to claim 4, which is characterized in that the specific stubbornness
Spot includes tea stain, cigarette stain, coffee stain, and preparation method difference is as follows:
The preparation method of the tea stain is using 200mL boiled water and 1.2g black tea, to cover and impregnate 5min, clean spot is carried
Body is immersed in black tea, is taken out and is dried after 7d；
The preparation method of the coffee stain is immersion process or furnace drying method；Wherein,
Immersion process is, using 200mL boiled water and 15g instant coffee, to cover and impregnate 5min, clean spot carrier is immersed in
In coffee, takes out and dry after 7d；Alternatively,
Furnace drying method is, using 200mL boiled water and 15g instant coffee, to cover and impregnate 5min, clean spot carrier is placed on 60
In DEG C baking oven, 1.0mL coffee is coated uniformly on spot carrier surface with dropper, primary, one day Tu Sici was applied every two hours,
Baking oven is closed after 3d to take out；
The preparation method of the cigarette stain is face-up to be put into clean spot carrier in cigar lighter, concurrent cigarette 160, cigarette
It is taken out after going out；
It is detected after preparing specific stain, if the area of specific stain is lower than the spot carrier gross area in testing result
80%, it need to prepare again.
6. electric oral cavity cleaning appliance method of evaluating performance according to claim 1, which is characterized in that dirty between the teeth space
The method of stain cleaning assessment are as follows:
The sticky spot that 1.00g is prepared uniformly is coated to adjacent two panels spot carrier docking, and coating width is not less than
5mm is coated altogether at three groups of docking, spot area before record cleans；
Start electric oral cavity cleaner in the case where toothpaste is not added, is cleaned at docking according to preset path；
After cleaning, remaining spot area at each docking is calculated, the variation of the cleaner specific spot area in front and back calculates tooth
Greasiness removal rate between seam, calculation formula are as follows:
In formula:
P2Greasiness removal rate, % between-teeth space；
s3- clean preceding spot area, unit mm2；
s4Spot area after-cleaning, unit mm2；
Later, by greasiness removal rate between teeth space, greasiness removal rate compares between the teeth space of ordinary toothbrush, calculates greasiness removal and mentions
High rate, formula are as follows:
Pi2=P2-Pc2
Pi2Greasiness removal increase rate, % between-teeth space；
P2Greasiness removal rate, % between-teeth space；
Pc2Greasiness removal rate, % between the teeth space of-ordinary toothbrush；
Spot cleaning evaluation between teeth space is finally obtained according to greasiness removal increase rate.
7. electric oral cavity cleaning appliance method of evaluating performance according to claim 1, which is characterized in that the plaque is clear
The method of clean assessment are as follows:
Bacteria suspension is prepared as, and 10g is met to wheat flour, 100mL distilled water, 25mL in GB 1355-86 to standard flour requirement
It is not added to boil after the Pumpkin Juice that water is squeezed with slow grinding machine mixes and stir evenly, obtain mixing suspension, mixing suspension is put into steam
Sterilizing in autoclave, sterilising temp are not less than 121 DEG C, and sterilization time is not less than 20min, will after sterile spot room temperature is cooling
Mixing suspension is uniformly mixed with the bacterium solution 1:1 of 109CFU/mL~1010CFU/mL, obtains bacteria suspension；
Bacteria suspension is respectively coated to the surface of spot carrier and comparison vehicle, it is dry not less than 1h, it is then clear to electric oral cavity
Clean device is cleaned according to surface of the preset path to spot carrier；
After cleaning, spot carrier surface and comparison vehicle microorganism remained on surface are recycled respectively, to recovered liquid
Culture counting is carried out, the area and viable count of plaque are remained on cleaner front and back spot carrier, plaque is calculated separately and removes
Bacterium rate and removal rate；
The calculation formula of degerming rate are as follows:
In formula:
R --- degerming rate, %；
A --- the viable count of spot carrier recovery, unit CFU/mL；
B --- the viable count of comparison vehicle recycling, unit CFU/mL；
The calculation formula of removal rate are as follows:
In formula:
P3- plaque removal rate, %；
s5- clean preceding plaque area, unit mm2；
s6- cleaning Dental Plaque area, unit mm2；
The calculation formula of plaque removal increase rate are as follows:
Pi2=P2-Pc2
Pi2- plaque removes increase rate, %；
Pc2The plaque removal rate of-ordinary toothbrush, %；
Finally evaluate to obtain plaque cleaning evaluation with increase rate is removed according to the degerming rate of plaque.
8. electric oral cavity cleaning appliance method of evaluating performance according to claim 7, it is characterised in that: the system of the bacterium solution
Preparation Method
Streptococcus mutans, Streptococcus sanguis, Lactobacillus casei, actinomyces viscosus, streptococcus salivarius are cultivated into work for 24 hours respectively
Change, the proportion of culture solution is peptone 0.5%, more peptones 0.5%, beans peptone 0.5%, the sucrose 3%, NaCl mixed under room temperature
0.3%, KH2PO4 0.3%, K2HPO4 0.2%, K2CO3 0.1%, the pH value of culture solution are 7.0；
Culture activation after transfer again culture for 24 hours, be centrifuged, remove supernatant, washed at least 3 times with sterile saline, by mycelium dilution
To OD540=1, centrifugation stays precipitating, then mixes the culture solution of 5 kinds of bacterium in equal volume, obtain bacterium solution.
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