GB2456527A - Dental tray with dams for tooth whitening - Google Patents
Dental tray with dams for tooth whitening Download PDFInfo
- Publication number
- GB2456527A GB2456527A GB0800739A GB0800739A GB2456527A GB 2456527 A GB2456527 A GB 2456527A GB 0800739 A GB0800739 A GB 0800739A GB 0800739 A GB0800739 A GB 0800739A GB 2456527 A GB2456527 A GB 2456527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tray
- tooth
- model
- teeth
- dam
- 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.)
- Pending
Links
- 230000002087 whitening effect Effects 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 238000011282 treatment Methods 0.000 claims abstract description 25
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002537 cosmetic Substances 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 26
- 210000003298 dental enamel Anatomy 0.000 claims description 6
- 239000003814 drug Substances 0.000 abstract description 4
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- -1 polyethylene Polymers 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 239000002985 plastic film Substances 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 10
- 238000004061 bleaching Methods 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 210000004268 dentin Anatomy 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229940078916 carbamide peroxide Drugs 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 206010068319 Oropharyngeal pain Diseases 0.000 description 1
- 201000007100 Pharyngitis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
- A61C19/063—Medicament applicators for teeth or gums, e.g. treatment with fluorides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
- A61C19/063—Medicament applicators for teeth or gums, e.g. treatment with fluorides
- A61C19/066—Bleaching devices; Whitening agent applicators for teeth, e.g. trays or strips
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
A tray for dental use comprising, on the tooth facing surface of the tray, a primary dam and a discrete secondary dam. The primary dam is positioned inboard of the terminal edge of the tray such that it engages with the subject's tooth near to the gingival margin, while the secondary dam engages with the tooth to partition a first portion of the tooth from a second portion of the tooth. In use, the dam, or protrusion, limits the spread of a treatment composition which is placed in the tray. The composition may be a dental medicine or a cosmetic whitening treatment. The tray may be formed from any plastics material such as EVA or polyethylene. Also described is a method of making the tray using a model having a shape corresponding to one or more of the subject's teeth and comprising a primary recess 7 and 8 and a secondary recess 9 and 10, the making of the model, and a kit of parts comprising a model and a plastic sheet for the manufacture of the tray.
Description
2456527
TRAY FOR DENTAL USE
5
The present invention relates to trays for dental use. More specifically, the present invention seeks to provide an improved dental tray for various dental treatments including bleaching or application of other dental substances, e.g. medicines, together with a method and model for making the tray.
10
Cosmetic dental treatment to whiten teeth has become increasingly popular in recent years. Consequently, several methods and tools have been developed to improve both the effectiveness and the convenience of traditional techniques. In the past, such treatments were performed in the 15 dentist's office, but today home treatment alternatives are available.
One such treatment comprises fitting a dental tray containing oxidising or whitening gel, such as hydrogen or carbamide peroxide, to one arch of a patient's teeth (i.e. the top teeth or the bottom teeth) thereby maintaining 20 the whitening gel in contact with the teeth. The top and bottom arches can also be whitened simultaneously using two trays. Also, the or each tray can be formed for use in relation to particular teeth. For example, to minimise cost, a patient may decide to simply whiten teeth which are most visible. It is even possible to fashion a tray for only one tooth, which may be desirable 25 if, for example, a single tooth had been discoloured by injury. The tray may be made of soft plastics material and may be custom moulded to fit the patient's teeth.
2
There are a number of known methods for making a tray. One popular method includes making an impression of the patient's teeth, making a plaster cast of the impression and forming a blank of sheet plastics material over the plaster cast.
5
US 6,848,905 discloses an alternative method of forming such a tray using the patient's own teeth as a template. The tray may subsequently be trimmed for improved comfort or use.
10 To carry out whitening, which can easily be done by the patient at home or elsewhere, whitening gel is placed into a dental tray which is then fitted over the patient's teeth and left for the requisite time. The tray can then be removed, cleaned and stored until the next use.
15 Despite the generally positive results obtained using the foregoing method, one known problem is that the whitening gel may leak from the tray onto the gums or onto areas of the teeth, close to the gums, where the enamel can be thin and/or discontinuous with exposed dentine. In this case, considerable irritation may arise or, for some individuals, pain may be experienced.
20
To mitigate this problem, the tray is sometimes cut back so that its margins stop short of the gums. However, this can result in too large a portion of each tooth, next to the gum, not being whitened. This may also result in a higher rate of leakage of the whitening gel in the absence of the barrier
25 provided by the gum, and ingestion of the bleaching agent can cause a sore throat, particularly if the quantity is significant.
3
In GB 2416310 to the present applicant there is disclosed a tray for dental use having at least one dam on the tooth-facing surface of the tray to limit, in use, the spread of a composition placed in the tray.
5 There is a desire to ensure the composition is kept in place. Also, there is a further desire to provide more control over which area or areas of a tooth the composition acts upon.
Accordingly, it is an object of the present invention to provide an 10 improvement to the known solution described above.
In a first aspect of the invention there is provided a tray for dental use comprising:
15 • a primary dam on a tooth-facing surface of the tray; and
• a discrete secondary dam on the tooth-facing surface of the tray preferably wherein the primary dam is inboard of the terminal edge of the tray such that in use the primary dam engages with the subject's teeth at a 20 distance from the gingival margin, and wherein in use the secondary dam engages with one of the subject's teeth to partition a first portion of the tooth from a second portion of the tooth.
Preferably, in use, the primary dam and discrete secondary dam are arranged 25 to engage the same tooth.
4
The tray may be made from any suitable plastics material, e.g. ethylene vinyl acetate (EVA) or polyethylene.
The first portion of the tooth may be a distal or free portion of the tooth. It 5 may be a relatively less porous area of the tooth, such as the coronal area, where the tooth surface comprises enamel.
The second portion of the tooth may be a portion nearer the gingival margin. It may be a relatively porous area of the tooth or an area readily capable of 10 suffering damage, such as in particular any part of the tooth having exposed dentine at the surface, e.g. in the vicinity of the cementum-enamel-junction, or where a tooth has been chipped, the area around the chip.
Typically the first portion will be denser and/or less porous than the second 15 portion.
In use, the tray may contain a dental medicine or composition, e.g. a composition for the cosmetic whitening of teeth.
20 The primary dam may be located to engage the subject's tooth or teeth at a distance of from slightly more than 0 mm to 5 mm from the gingival margin. Preferably, it may be located between 1 mm and 5 mm from the gingival margin, more preferably it may be located about 2 mm away from the gingival margin.
25
5
In use, the distance from the gingival margin to the primary dam may or may not be constant around a subject's arch or arches of teeth. The distance may vary regularly or irregularly.
5 The secondary dam may be positioned and dimensioned so as to partition in use the coronal enamel of a subject's tooth from the remainder of the tooth. The secondary dam may be positioned to engage the tooth in the vicinity of the cementum-enamel-junction, preferably no more than 3 mm from the cementum-enamel-junction, more preferably between about 0.5 mm and 3 10 mm from the cementum-enamel-junction, most preferably around 2 mm from the cementum-enamel-junction. Preferably the secondary dam may be positioned to engage the tooth on the enamel side of the cementum-enamel-junction.
15 On any one tooth, the distance from the gingival margin to the primary dam may be less than from the gingival margin to the secondary dam.
Preferably, in use no part of the secondary dam may engage a tooth within about 3 mm of the gingival margin.
20
Preferably the tray is shaped to correspond to the configuration of one arch of a subject's teeth.
Preferably the primary dam extends continuously along substantially the 25 entire length of the tooth-facing surface of the tray.
6
According to an optional feature of the invention, the tray may comprise one or more further dams positioned on the rear tooth-facing surface, which, in use, engage with at least one tooth.
5 Optionally, the one or more further dams on the rear tooth-facing surface are positioned such that in use they engage with the subject's teeth at a distance from the gingival margin.
The tray of the present invention may comprise a discrete dam to engage in 10 use with each one of the subject's teeth. Alternatively, more than one discrete dam may be provided per tooth. The number of discrete dams provided per tooth may vary from one tooth to another. In particular, the number of discrete dams to be provided per tooth may be decided upon following analysis of the tooth area to be treated, e.g. taking into account the 15 pattern of any staining or discolouration, or the location and distribution of areas of exposed dentine.
According to a second aspect of the invention, there is provided a bleaching tray comprising:
20
• a primary dam on the tooth-facing surface of the tray; and
• a discrete secondary dam on the tooth-facing surface of the tray
7
wherein the primary dam is inboard of the terminal edge of the tray such that in use the primary dam engages with the subject's teeth at a distance from the gingival margin, and wherein in use the secondary dam engages with one of the subject's teeth to partition a first portion, e.g. a relatively porous area, 5 of the tooth from a second portion, e.g. a relatively less porous area.
In another aspect of the invention, there is provided a method for making a tray for dental use, the method comprising:
10 • providing a model having a shape corresponding to one or more teeth, the model comprising a primary recess which extends laterally across substantially the entire model and at least one secondary recess which is confined to a portion of the model corresponding to a single tooth; and
15
• forming the tray on the model such that the tray comprises a primary dam and at least one secondary dam corresponding to the primary and secondary recesses respectively.
20 According to an optional feature of this aspect of the invention, the method may comprise an initial step of forming a recess in the model.
Preferably, the method comprises making the recess using a knife or other sharp instrument.
25
Optionally, the method may comprise an initial step of making the model.
8
According to a further aspect of the invention there is provided a method of making a model for use in forming a tray for dental use comprising:
5 • providing a preliminary model having a shape corresponding to one or more teeth; and
• forming a primary recess which extends laterally across substantially the entire preliminary model and at least one
10 secondary recess, the secondary recess being confined to a portion of the preliminary model corresponding to a single tooth.
Preferably, the method comprises making the primary and secondary recesses with a knife or other sharp instrument.
15
In a further aspect of the invention there is provided a model having a shape corresponding to one or more teeth for use in forming a tray for dental use, wherein the model comprises:
20 • a primary recess which extends laterally across substantially the entire model; and
• at least one secondary recess which is confined to a portion of the model corresponding to a single tooth.
25
9
Preferably, the model is shaped to correspond to the configuration of one arch of a subject's teeth.
According to a further aspect of the invention there is provided a method for 5 the cosmetic treatment of teeth comprising:
• providing a tray for dental use having a primary dam and at least one discrete secondary dam which defines the area of a tooth to be treated;
10
• placing a treatment composition into the portions of the tray that define the area of the at least one tooth to be treated; and
• fitting the tray to the user's teeth.
15
The treatment composition may comprise a fluoride composition.
The treatment composition may comprise a composition for teeth whitening. Suitable examples are disclosed in the applicant's earlier published patent 20 applications GB 2438308 and WO 2007/132247, the entire disclosures of which are incorporated herein by reference.
25
According to a still further aspect of the invention, there is provided a method for the cosmetic whitening of teeth, the method comprising:
10
• providing a tray for dental use having a primary dam and at least one discrete secondary dam which defines the area of a tooth to be treated;
• placing a composition for teeth whitening into the portions of the tray that define the area of the at least one tooth to be treated; and
• fitting the tray to a subject's teeth.
The composition for teeth whitening may comprise a bleaching agent, e.g. hydrogen peroxide or carbamide peroxide.
The composition for teeth whitening for use with the tray for dental use of the invention may comprise up to 40% of bleaching agent, e.g. from 6% to 40% of hydrogen peroxide.
Preferably, the composition for teeth whitening may be in the form of a gel.
The composition for teeth whitening may be formable by mixing two or more solutions shortly before use.
Optionally, the composition for teeth whitening may be a composition as disclosed in the applicant's earlier published patent applications GB 2438308 and WO 2007/132247, the entire disclosures of which are incorporated herein by reference.
11
In a still further aspect of the invention there is provided a combination of a tray for dental use and a treatment composition, the tray comprising a primary dam on the tooth-facing surface of the tray and a discrete secondary 5 dam on the tooth-facing surface of the tray, wherein the primary dam is inboard of the terminal edge of the tray such that in use the primary dam engages with the subject's teeth at a distance from the gingival margin, and wherein in use the secondary dam engages with one of the subject's teeth to partition a relatively less porous region from a relatively porous region, and
10 wherein the treatment composition is contained within a portion of the tray bound by the secondary dam such that in use the treatment composition is brought into contact with the relatively less porous region in preference to the relatively porous region.
15 According to a further aspect of the invention there is provided a kit of parts for use in the treatment of teeth, the kit comprising:
• a formable plastics sheet; and
20 • a model having a shape corresponding to one or more teeth, the model comprising a primary recess which extends laterally across substantially the entire model and at least one secondary recess which is confined to a portion of the model corresponding to a single tooth.
25
12
The formable plastics sheet may be made from any suitable material, e.g. ethylene vinyl acetate (EVA) or polyethylene,
The formable plastics sheet may be between 0.5 and 2.0 mm thick, preferably 5 between 0.6 and 1.0 mm thick, most preferably around 0.8 mm thick.
In order that the invention may be more fully understood, it will now be described by way of example only with reference to the accompanying drawing in which:
10
Figure 1 shows a model of a subject's teeth on which are shown lines along which recesses are to be provided.
In Figure 1 there is shown a model of a subject's teeth. The model includes a 15 first portion 1 representing the subject's upper arch of teeth and a second portion 2 representing the subject's lower arch of teeth.
The first portion 1 comprises an upper gum-shaped portion 3 attached to which and extending downwardly therefrom are a number of upper tooth-20 shaped portions 5.
Shown on the first portion 1 is a first line 7 which runs continuously across substantially the entire breadth of the model, passing over each upper tooth-shaped portion 5 proximal to (but not at) the join between the upper gum-25 shaped portion 3 and upper tooth-shaped portions 5.
13
The first line 7 acts as a guide for a dental practitioner to follow when forming a primary recess, e.g. using a knife or other sharp instrument.
Also shown on each upper tooth-shaped portion 5 is a second line 9. On each 5 upper tooth-shaped portion 5, the second line 9 is substantially in the shape of an arch.
The second line 9 acts as a guide for a dental practitioner to follow when forming a discrete secondary recess on one or more of the tooth-shaped 10 portions, e.g. using a knife or other sharp object.
The second portion 2 comprises a lower gum-shaped portion 4 attached to which and extending upwardly therefrom are a number of lower tooth-shaped portions 6.
15
Shown on the second portion 2 is a third line 8 which runs continuously across substantially the entire breadth of the model, passing over each tooth-shaped portion proximal to (but not at) the join between the lower gum-shaped portion 4 and lower tooth-shaped portions 6.
20
The third line 8 acts as a guide for a dental practitioner to follow when forming a primary recess, e.g. using a knife or other sharp instrument.
Also shown on each lower tooth-shaped portion 6 of the second portion 2 is a 25 fourth line 10. On each lower tooth-shaped portion 6, the fourth line 10 is substantially u-shaped.
With reference to Figure 1, a dental tray according to the present invention is made by following a process involving:
1) taking an impression (not shown) of one arch of the subject's teeth;
2) making a cast or model (1) of the impression, e.g. as shown in Figure 1;
3) forming a primary recess (7, 8) and one or more secondary recesses (9, 10) on the surface of the cast or model (1) which correspond to the front and/or rear surfaces of the subject's teeth;
4) forming a thin sheet of plastics material over the model thereby forming the dental tray, e.g. by using a vacuum forming process; and
5) trimming the tray as required to fit onto the subject's teeth.
The formed tray will comprise protrusions in the front and/or rear tooth-facing surfaces of the tray corresponding to the primary and secondary recesses in the model.
The primary and secondary recesses can be made, for instance, using a knife of the kind known in the dental profession as an Ash No.5 knife.
15
In one embodiment the dental tray according to the present invention is shaped to correspond to the configuration of the bottom arch of an individual subject's teeth, e.g. by forming a thin sheet of plastics material over the lower portion 2 of the model shown in Figure 1.
5
The tray may be made of a plastics sheet material, e.g. EVA, with a thickness of approximately 0.8 mm.
In an alternative embodiment the protrusions provided on a tray according to 10 the invention may be formed from a separate body from the tray, e.g. a rubber seal secured to the tray.
In use, a composition such as a teeth whitening gel is placed in the tray in one or more of the regions defined by the discrete secondary dams.
15
The tray of the present invention is then fitted over a subject's teeth. The fitting of the tray causes the composition to spread over the tooth while the secondary and/or primary dams provide barriers to prevent the composition from flowing to areas where it is not required. For example, in the case of 20 hydrogen peroxide-containing teeth-whitening gels, in order to avoid possible irritation and/or pain it is desirable to prevent the gel coming into contact with parts of the subject's teeth having exposed dentine, or the subject's gums or other oral soft tissue.
16
A preferred embodiment of the tray according to the invention is produced by forming a plastics sheet material over the top portion of the model shown in Figure 1.
5 In use the sections of a so-formed tray delineated by the secondary dams bring a teeth-whitening gel into contact with the relatively less porous coronal enamel.
In general, the secondary dams are designed and positioned to at least 10 minimise the amount of bleaching composition which comes into contact with areas of a tooth where there is exposed dentine. The primary dam is designed and positioned to protect the user's gums from exposure to any bleaching composition.
15 It will be appreciated that discrete secondary dams can be provided to isolate almost any number of different areas of the tooth as required. For example, a dam may 'ring-fence' a damaged area of a tooth. This allows the dental practitioner to tailor the treatment of a subject's teeth, e.g. by using different strength bleaching compositions on different teeth and/or different parts of 20 the same tooth.
For instance, in a single application, weaker bleaching compositions may be applied to teeth or parts thereof showing less discolouration or staining, while stronger compositions may be applied to badly stained regions. Also, weaker 25 compositions capable of being tolerated by relatively porous areas, such as
17
areas having exposed dentine, can be placed in the area defined between the primary dam and secondary dam on each tooth.
It may be desirable to position any dams on the rear tooth-facing surface of 5 the tray so that they engage with the subject's teeth relatively close to the top surface of the tooth in order to limit exposure of the rear tooth surfaces which may not require whitening.
It will be readily appreciated that any principles of the invention relating to a 10 tray and model for a top arch of teeth may be applied to a bottom arch of teeth and vice versa. Further, the principles of the invention may be applied in respect of a partial top or bottom arch or any tooth as required.
Equally, trays according to the invention may be used on their own or in 15 combination, e.g. for simultaneous whitening of a subject's upper and lower teeth.
Advantageously, by providing tooth-specific discrete secondary dams to define the to-be-treated area of a tooth in addition to a primary dam to protect the 20 subject's gums, stronger tooth bleaching compositions may more safely and comfortably be used, either in chair-side applications by a dental practitioner or at home by the subject him or herself.
The use of stronger bleaching compositions may shorten a treatment 25 programme, either in terms of the time required per session or the number of sessions required to achieve the desired result.
18
This may also allow a cosmetic dental practice to increase its throughput and/or efficiency, e.g. to see more subjects per day.
5 The method of manufacture of the trays of the invention allows the dental practitioner to provide subject-specific trays. This is of great benefit during subsequent treatment, e.g. whitening, because it increases the subject's comfort and allows the efficient provision of a composition to the to-be-treated area while custom-configured dams provide a more effective seal to control 10 any spreading of the composition.
The embodiments described above are merely illustrative examples of the present invention. As well as appreciating the many advantages provided by the present invention, the person skilled in the art will also readily appreciate 15 that many modifications could be made to the embodiments disclosed herein without departing from the scope of the invention.
For instance, a person skilled in the art will appreciate that other dental procedures in addition to cosmetic teeth whitening may benefit from the 20 invention without departing from the scope of the invention, e.g. fluoride treatment or the application of other dental medicines.
Further, while the principles of the invention are clearly suitable for use in the treatment of human teeth, it is envisaged that they also would be useful in the 25 treatment of the teeth of other species, in particular mammals such as cats and dogs which are kept as pets.
19
Claims (1)
- A tray for dental use comprising:• a primary dam on a tooth-facing surface of the tray; and• a discrete secondary dam on the tooth-facing surface of the trayA tray according to Claim 1, wherein the primary dam is inboard of the terminal edge of the tray such that in use the primary dam engages with the subject's teeth at a distance from the gingival margin, and wherein in use the secondary dam engages with one of the subject's teeth to partition a first portion of the tooth from a second portion of the tooth.A tray according to any preceding Claim, wherein the tray is made from a plastics material.A tray according to any preceding Claim, wherein the tray is shaped to correspond to the configuration of one arch of a subject's teeth.A tray according to any preceding Claim, wherein in use the distance from the gingival margin to the primary dam is in the range of from more than 0 mm to 5 mm.A tray according to Claim 5, wherein the distance is between 1 mm and 5 mm.207. A tray according to any preceding Claim, wherein the secondary dam is positioned and dimensioned so as to partition in use the coronal enamel of the subject's tooth from the remainder of the tooth.8. A tray according to any preceding Claim, wherein the secondary dam is sized and dimensioned so as to engage in use with the tooth in the vicinity of the cementum-enamel-junction.9. A tray according to any preceding Claim, wherein the primary dam extends continuously along substantially the entire length of the tooth-facing surface of the tray.10. A method for making a tray for dental use, the method comprising:• providing a model having a shape corresponding to one or more teeth, the model comprising a primary recess which extends laterally across substantially the entire model and at least one secondary recess which is confined to a portion of the model corresponding to a single tooth; and• forming the tray on the model such that the tray comprises a primary dam and at least one secondary dam corresponding to the primary and secondary recesses respectively.21A method according to Claim 10 comprising an initial step of forming a recess in the model.A method of making a model for use in forming a tray for dental use comprising:• providing a preliminary model having a shape corresponding to one or more teeth; and• forming a primary recess which extends laterally across substantially the entire preliminary model and at least one secondary recess, the secondary recess being confined to a portion of the preliminary model corresponding to a single tooth.A model having a shape corresponding to one or more teeth for use in forming a tray for dental use, wherein the model comprises:• a primary recess which extends laterally across substantially the entire model; and• at least one secondary recess which is confined to a portion of the model corresponding to a single tooth.A method for the cosmetic treatment of teeth comprising:22• providing a tray for dental use having a primary dam and at least one discrete secondary dam which defines the area of a tooth to be treated;• placing a treatment composition into the portions of the tray that define the area of the at least one tooth to be treated; and• fitting the tray to a subject's teeth.A method for the cosmetic whitening of teeth, the method comprising:• providing a tray for dental use having a primary dam and at least one discrete secondary dam which defines the area of a tooth to be treated;• placing a composition for teeth whitening into the portions of the tray that define the area of the at least one tooth to be treated; and• fitting the tray to a subject's teeth.A combination of a tray for dental use according to any of Claims 1 to 9 and a treatment composition.23A kit of parts for use in the treatment of teeth, the kit comprising:• a formable plastics sheet; and• a model having a shape corresponding to one or more teeth, the model comprising a primary recess which extends laterally across substantially the entire model and at least one secondary recess which is confined to a portion of the model corresponding to a single tooth.A tray for dental use as disclosed in the description and drawings.A model for use in forming a tray for dental use as disclosed in the description and drawings.A method of making a tray for dental use as disclosed in the description and drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0800739A GB2456527A (en) | 2008-01-16 | 2008-01-16 | Dental tray with dams for tooth whitening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0800739A GB2456527A (en) | 2008-01-16 | 2008-01-16 | Dental tray with dams for tooth whitening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0800739D0 GB0800739D0 (en) | 2008-02-20 |
| GB2456527A true GB2456527A (en) | 2009-07-22 |
Family
ID=39144996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0800739A Pending GB2456527A (en) | 2008-01-16 | 2008-01-16 | Dental tray with dams for tooth whitening |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2456527A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022259141A1 (en) * | 2021-06-09 | 2022-12-15 | Airnivol S.P.A. | Dental appliance designed to fit over a dental arch and related systems and methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111904635B (en) * | 2020-07-27 | 2023-02-24 | 北京大学口腔医学院 | Accurate mold taking method and device for multi-tooth position planting |
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| EP0171002A1 (en) * | 1984-07-31 | 1986-02-12 | Dentsply International, Inc. | Dental impression tray and method of use |
| US5895218A (en) * | 1998-08-10 | 1999-04-20 | Young Dental Manufacturing Company | Dental tray |
| US6280196B1 (en) * | 2000-10-16 | 2001-08-28 | Shield Mfg. Inc. | Disposable tooth bleaching tray |
| GB2416310A (en) * | 2004-07-21 | 2006-01-25 | Smile Studio | Dental tray for teeth whitening |
| US20060029908A1 (en) * | 2004-08-09 | 2006-02-09 | Allred Peter M | Treatment devices for providing oral treatments and kits and methods that utilize such treatment devices |
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|---|---|---|---|---|
| EP0171002A1 (en) * | 1984-07-31 | 1986-02-12 | Dentsply International, Inc. | Dental impression tray and method of use |
| US5895218A (en) * | 1998-08-10 | 1999-04-20 | Young Dental Manufacturing Company | Dental tray |
| US6280196B1 (en) * | 2000-10-16 | 2001-08-28 | Shield Mfg. Inc. | Disposable tooth bleaching tray |
| GB2416310A (en) * | 2004-07-21 | 2006-01-25 | Smile Studio | Dental tray for teeth whitening |
| US20060029908A1 (en) * | 2004-08-09 | 2006-02-09 | Allred Peter M | Treatment devices for providing oral treatments and kits and methods that utilize such treatment devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022259141A1 (en) * | 2021-06-09 | 2022-12-15 | Airnivol S.P.A. | Dental appliance designed to fit over a dental arch and related systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0800739D0 (en) | 2008-02-20 |
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