Cheap Snow Teeth Whitening Thanksgiving Deals

Cheap Snow Teeth Whitening Thanksgiving Deals

The Shine Whitening system utilizes botanical elements as opposed to hydrogen peroxide or other sulfurous chemicals, as effectively as LED illumination, to accelerate the whitening method. The method of utilization this product corresponds to the GLO Scientific research package, with a gel that goes into trays that at that point suit in to your mouth (Cheap Snow Teeth Whitening Thanksgiving Deals).

An additional very helpful tooth whitening remedy for those folks along with incredibly sensitive pearly whites. Sadly, this makes it a bit difficult to use. In spite of this, the body performs operate. You utilize the item twice a time for 15 minutes, and also after a few full weeks,. Shine Whitening is not as successful as Peak 3D strips or even the GLO Scientific research kit, but it does certainly not injured, regardless of whether you possess incredibly vulnerable pearly whites.

Facts and also figures on the Luster Whitening No Peroxide Pearly White Whitening Body: Type: Applicator along with separate LED lightKit: Applicator, pair of tubes of gel, LED lightUsage: Pair of 15-minute requests, twice per dayCourse of therapy: 30 daysExtrinsic discolor removalActive Ingredients: Salt bicarbonate, potassium sorbate, sodium fluoride, aloe as well as lavender removes The Groom+ Type crew wasn’t pretty sure whether this certifies as a set, however it does a lot the exact same trait as the other products on our checklist, and it is actually a great deal easier to use.

You repaint the gel onto your pearly whites, permit it dry out and also remain on your teeth for 15 minutes, rinse and you’re performed. There is no prescribed size of procedure; you ought to observe a whitening result in and also it can use be actually whenever you possess a very hot date or a major meeting.

More facts on the Polar Pearly White Whitening Pen: Type: Pen applicatorUsage: Quick application, at that point 15 minutes prior to rinsingCourse of procedure: First renovation viewed in a full week or a lot less as well as great for touchupsIntrinsic as well as extraneous tarnish removalActive component: Hydrogen peroxide With whitening strips, trays and other units all stating that they are actually the most effective treatment for stained teeth, you might question why many whitening toothpastes perform the marketplace at the same time. Cheap Snow Teeth Whitening Thanksgiving Deals.

Cheap Snow Teeth Whitening Thanksgiving Deals

Peak’s 3D White Sparkle is in fact greater than simply tooth paste; it is actually a two-step. Twice a time, you comb with the that entirely washes your teeth and mouth. Then without rinsing, you brush along with the that brightens your teeth and also corresponds to right stuff they use to clean your pearly whites in the dental practitioner’s workplace.

The combination isn’t as pleasant as the flavorful tooth pastes on the drug store shelf, but it is actually excusable. It’s, as well (Cheap Snow Teeth Whitening Thanksgiving Deals). A great remedy for those that are actually not in a thrill to whiten their pearly whites, or for folks that are actually desiring to keep white teeth, after a pearly whites whitening operation.

Extra importantly, the separate whitening gel with peroxide permits the unit does a considerably far better work than normal “whitening tooth pastes” which simply possess a rough mixed in. You’ll discover that a lot of whitening tooth pastes brighten pearly whites by a color or 2 maximum, but the Crest body can come, with frequent make use of in time.

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

That suggests 3D White Shine can easily as properly as their frontal faces. Peak’s whitening tooth paste body is actually more economical and calls for considerably a lot less time than other pearly whites whitening services, and will cheer up most pearly whites virtually and also long as the mix as well as gel are actually used appropriately for the lasting. Cheap Snow Teeth Whitening Thanksgiving Deals.

to check out the Rate on Amazon. * This is a brilliant product when it is certainly not offered out. Extra pricey than the AuraGlow, yet a costs versionbuy the GLO Scientific research if it is actually readily available as well as you possess the funds, or even the AuraGlow is going to not let you down!When you go to the dental practitioner for teeth whitening treatments, there is a good possibility the process will definitely include gel holders and light-activated devices.

Cheap Snow Teeth Whitening Thanksgiving Deals

The teeth whitening device is actually originally a little awkward to use, however you. First, you apply the lip ointment provided in the set, at that point position a slim level of the whitening gel onto the front of your pearly whites with the featured brush. Activate the mouthpiece, placed it right into your oral cavity as well as muzzle it as you would certainly on a sporting activities mouth protection until the lightings on the device transform off 8 mins later.

The warm and also LED light inside the mouthpiece “accelerate” the whitening action of the hydrogen peroxide that is actually consisted of in the gel. You are going to devote 32 minutes every day on a treatment. This 32 moments is actually divided in to 4, 8-minute sessions in between each session you wash out your mouth and mouth pieces and also apply a brand-new layer of the G-Vial gel.

The mouth piece is actually powered by a console which is actually billed in advance and used around your neck so you can easily get around with ease during the course of the therapy. Compared to the 3D strips, the duration of the therapy is actually absolutely an additionally (), along with the final whitening effect slightly superior. GLO mentions it can whiten teeth on standard (which possesses a great band to it) and also is actually perhaps not also far from the fact.

If cost is among your main considerations, you’ll wish to look into the AuraGlow Whitening Package which is upcoming on our checklist. Facts as well as plan the GLO Scientific Research Brilliant Personal Teeth Whitening Tool: Style: Powered applicatorKit: Applicator, ten tubes of gel, energy adapter, charging dock, USB cableUsage: 4 eight-minute uses per dayCourse of therapy: 3-5 daysIntrinsic (blemishes listed below the area of the pearly whites’s polish) and external tarnish removalActive Ingredient: Hydrogen peroxideMoyeni Merely True White Teeth Whitening Marker Package.

The Groom+ Style Crew was almost sure whether this product certifies as a kit, however it performs a lot the exact same thing as the other items on our checklist, and it is actually a lot easier to use!The gel inside the whitening pen is actually produced from all-natural active ingredients with, so there is no pain for those with.Simply, you paint the gel onto your teeth, allow it sit for twenty minutes, and after that rinse out and clean.

Cheap Snow Teeth Whitening Thanksgiving Deals

For a simple patch up on the move, that are going to bleach teeth in time. In time your teeth cheer up if you use it daily, naturally, the procedure will definitely be more fast. We do certainly not presume this item is actually as reliable as the sets rated above it, but they are all designed for details time sizes while the advantage of the.The pen is absolutely worth thinking about if you do not desire to worry about with holders, strips, and also gel.

sells at-home teeth whitening kits that make use of exclusive active ingredients to supply assured end results, without level of sensitivity, in as little bit of as 10 mins each day. The site advertises Snow spent numerous years and also much more than $2.3 thousand undertaking trial and error, every one of which focused on inventing “a genuinely cutting edge item that just functions better than everything else our team have actually seen on the market place.” Reviewed to various other bodies, Snow’s Pearly whites Whitening set takes advantage of an LED-filled oral cavity rack that plugs into any digital gadget and also rates up your end results.

And also they state their whitening gel can easily perform each one of this without utilizing dangerous chemicals or even animal testing. Ad Together, the companyfounded in 2015 as well as partly owned by NFL celebrity Rob Gronkowskipromises to give the greatest pearly whites whitening results money can purchase. Should you turn into one of their much more than 150,000 globally supporters, though? Just how performs Snow match up to various other whitening systems, as well as which possibilities will provide one of the most value? Allow’s begin through aiming on everything their package includes.

Later, you’ll repaint the provider’s exclusive whitening cream onto each tooth, similar to repainting your nails. Snowfall consists of an advanced oral cavity rack with their system, which uses patented LED turning on technology to release ultra-safe insights of illumination they point out are going to aid lighten teeth faster without injuring your mouth or body system by any means (extra on this later).

Credit Scores: Snowfall Whitening, Inc. All you need to have to carry out is actually hook up the tool to any type of computer system or even smartphone as well as conveniently insert in to your mouth. Coming from there certainly, you’ll keep it in location for in between 10 as well as 30 minutes, relying on your wanted level of whitening. Your last measure is actually to disconnect the LED holder, clear away coming from your oral cavity, and also wash each the rack as well as your mouth.

Cheap Snow Teeth Whitening Thanksgiving Deals

Matched up to Snowfall’s current variation, the soon-to-be-released system uses the exact same proprietary whitening methods yet features a space-saving style that appropriately outlets each component in your shower room. It is actually additionally travel-friendly if you need to have to lighten on the go. The greatest technological difference is their new oral cavity rack, which includes dual-light modern technology; a blue LED for professional whitening, coupled with a red LED for eliminating gingivitis-causing bacteria as well as combating declining gum lines.

When asking for (also cordless), the Snow site publicizes it self-sanitizes and kills 99.9% of germs. Listed here is Snowfall’s All-New body, which delivers numerous brand-new modern technologies as well as a space-saving design, and is actually presently on call for pre-sale. Credit History: Snowfall Whitening, Inc. Eventually, Snowfall’s forthcoming kit includes a mobile phone app that provides you the chance to set targets and also track the shade changes in your teeth, while making rewards and also cost-free products.

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

Nevertheless, they do not detail any one of their elements. Our experts connected to client service, that without delay responded: “We utilize an exclusive cream, but the active substances include hydrogen and also carbamide peroxide, in addition to salt bicarbonate. Durability varieties from 8-12% for frequent and 16-19% for the greatest toughness. International models carry out certainly not take advantage of hydrogen peroxide as a result of to nation specifications.” Carry out the substances in at-home whitening sets commonly supply the exact same stain-fighting power as a treatment from your oral professional? Besides, they tell our team, “Our end results could be matched up even more to a $500-1000 dental practitioner procedure, at a portion of the price as well as done in the convenience of your house.” The short response? Probably not.

Sign Burhenne, “Expert whitening gel usually tends to become stronger after that at-home whitening gel.” Simply put, coming back to our whitening post above, they typically include greater peroxide percents (30%+) contrasted to at-home kits (usually 10-20%). Snow tells our company there are actually no side effects connected to their Pearly whites Whitening body as long as you adhere to the included plan of 930 minutes every day for in between 21 as well as 30 consecutive days.

Additionally, they market their creams do not cause sensitivity, don’t damage polish, as well as do not include hazardous chemicals. In our short article concerning opting for a whitening unit, our company report that the absolute most common peroxide-related negative effects mentioned through buyers is sensitivity, specifically if the gel makes its own method onto the periodontals. Not all consumers experience it, however.

Cheap Snow Teeth Whitening Thanksgiving Deals

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

The Snow Pearly whites Whitening total package offers for $150, with the newer variation currently on call for pre-sale at $299. 3, 6, or even nine-packs of whitening lotion replenish sticks (2 ml each) will certainly cost you in between $25 and also $75. One, 2, three, and six-packs of max-strength refills (4 ml each) are actually readily available for in between $25 as well as $65.

Shipping is billed during have a look at and also Snowfall ships coming from Arizona to extra than 195 countries around the world (Cheap Snow Teeth Whitening Thanksgiving Deals). Advertising campaign The company supports their whitening kits along with a 100-percent results guarantee and also a five-year service warranty. Having said that, their Profit Policy page, you can certainly not make a gain or even obtain a reimbursement: “We deliver an one hundred% leads warranty, certainly not an one hundred% money-back assurance.

All reimbursements are given out as an installment plan (gift memory card). The one hundred% results guarantee means we can replace your whitening cream if you are dissatisfied with your whitening end results.” You can known as customer care at (480) 470-6184, although as our experts summarized above, the only choice we were given was to leave behind a message.

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

Depending on to a 2017 record through NPR, at-home pearly whites whitening works with a $ 3.2 billion market, thus there are actually considerable amounts of alternatives to decide on if you reside in the market place. When comparing each of these rivals, do you always need to spend even more for a kit like Snow that features an LED-illuminated oral cavity rack? After all, you ‘d likely invest $400+ over the training program of a year if you used their device every other month for 21-30 times at once, as routed.

Cheap Snow Teeth Whitening Thanksgiving Deals

Cheap Snow Teeth Whitening Thanksgiving Deals

Snowfall is actually a leader on the residence teeth whitening market. The proprietary whitening formula is actually praised for having the capacity to eliminate even the hardest stains without triggering sensitivity. SHORTCUTSProfessional-quality pearly whites whitening at homeOver 500,000 satisfied customersSuperior results without causing sensitivityHelps get rid of difficult coffee as well as wine stains30-days cash back guaranteeSnow makes pearly whites bleaching practical without any workplace visits, annoying strips, or cluttered request.

The Snowfall treatment is an LED-activated teeth whitening system that targets all sort of stains. This features those dued to red wine, tea, coffee, and also cigarette. The patent-pending light-accelerated technology results in no side effects, as the insights are actually not harmful. It is FDA-approved, enamel-safe, as well as does not induce sensitiveness. You do not need to have any type of dental practitioner brows through or prescribeds to perform the procedure coming from the comfort of your personal property.

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

Snowfall likewise rejects to check on creatures. There are actually pair of sets to select from. The components of each ought to last for over 90 applications. Let’s break down what they have as well as just how to pick the greatest one for you. This package is Snow’s best-known item, with the help of which they got their level of popularity.

The All-in-One kKt coming from Snow has: a wired LED mouth piece,3 whitening sticks,1 extra-strength whitening stick, anda cover resource. The mouth piece is appropriate with the Snow app, thus you may manage exactly how deeply you prefer to bleach your teeth. Cheap Snow Teeth Whitening Thanksgiving Deals. It comes along with a cord that lets you attach to USB, apples iphone, as well as various other smartphones.

Cheap Snow Teeth Whitening Thanksgiving Deals

It might be actually noticeable, however the largest distinction between the pair of packages is the cordless feature. Over three thousand were spent on research study as well as development, creating brand new performances feasible. The materials of The Wireless Charging At-home Pearly Whites Whitening Kit consist of: a cordless LED mouthpiece, a docking terminal,3 whitening sticks,1 maximum durability whitening wand,1 desensitizing product, lip treatment, USB cable television, andan instructions.

The final function enables the procedure to be actually adapted to your necessities. It courses automatically, therefore all of you possess to carry out is actually activate it on the app. The mouthpiece is waterproof. This implies you may safely utilize it in the downpour. What’s more, it disinfects itself while demanding. There is actually also a red-light treatment possibility for your gum tissues.

Depending on to analysis, it assists: do away with micro-organisms, lower tooth sensitiveness, strengthen blood flow in the gum tissues, avoid declining gum tissue lines, increase bone density, andminimize post-whitening irritation. The docking terminal includes a hidden style, people often contrast the means it tries to a bluetooth sound speaker. Besides sterilizing and billing the mouthpiece, it likewise multiplies as a penholder as well as traveling scenario for your lotion wands.

Effects are guaranteed to be noticeable after 7 times of utilization. The sets are easy to make use of right out of the package, thus practically any individual can easily lighten their teeth with Snowfall items. Listed below is actually a general introduction: Safe forThose with crowns, bridges, as well as veneersTeeth along with fillingsPregnant womenBreastfeeding momsSensitive dentitionAdditionally, they ship their items worldwide, thus your area won’t restrict you.

Cheap Snow Teeth Whitening Thanksgiving Deals

It is actually suggested that you brush and floss your pearly whites prior to doing the therapy. Dental cleanliness aids get rid of any meals fragments as well as impurities (Cheap Snow Teeth Whitening Thanksgiving Deals). This allows even insurance coverage of the item. You desire all surface areas of your teeth to be brightened!Moreover, oral plaque buildup and germs, which sometimes receive caught between the lotion and the teeth, make it more probable for you to experience dental cavity or even other oral concerns.

This step is certainly not needed to have if your teeth does not usually respond to temp or even delightful or difficult foods. It not simply lessens level of sensitivity yet also boosts the pearly white enamel. The formula is actually furthermore packed with minerals as well as vitamins. If you make a decision to make use of the numbing cream, do this 15 mins prior to the whitening session and also at that point wash.

Use either the regular or even extra-strength whitening serum, depending upon the results you want. Spin the stick to acquire the product out. You might must do this approximately 30 times when you first utilize it. The brush recommendation will certainly aid you administer the lotion. Picture you are coating a white colored sentry fence (Cheap Snow Teeth Whitening Thanksgiving Deals).

If you love your gum tissues rub it off the greatest you can. A percentage won’t harm, but the item was created for pearly whites only. The cordless LED unit possesses a “shake to wake” feature. Right here are the overall directions for this component: Shake once to switch it on.

Cheap Snow Teeth Whitening Thanksgiving Deals

A third opportunity for the gum treatment. Trembling it four opportunities will definitely put it to sleep. You can also download and install the application to personalize your therapy. As soon as you are actually performed, put the illumination back right into the owner. If you have actually the wired mouth piece as an alternative, merely attach it around your phone to trigger it.

Maintain it in for 9 to half an hour on a daily basis, 21-30 times in a row. If you take place to experience some level of sensitivity, take a 1 to 3-day rest and continue the treatment later on. It is actually ideal to administer your treatments just before going to mattress. Through this they do not hinder eating or even alcohol consumption.

The cordless kind is going to self-sanitize while charging. Shop your whitening sticks in the refrigerator after utilizing all of them. This can easily assist all of them maintain their stamina over a longer time period. The packages include a supply for months of applications, so it’s a good tip to take the most effective feasible care of your products.

The device may be actually matched up to a qualified therapy setting you back $500-$ 1,000. For a much lesser price you may do this coming from the convenience of your very own residence. You can get your Snow whitening kit exactly on their internet site, however it’s also readily available on Amazon. Below is actually a summary of just how much Snow whitening products currently cost: ProductPriceAll-in-one package$ 199Wireless asking for set$ 299Extra toughness refills$ 49Add-on for delicate pearly whites$ 25Serum refill wands$ 25There are actually even settlement options for those who don’t wish to be actually out the cash at one time – Cheap Snow Teeth Whitening Thanksgiving Deals.

Cheap Snow Teeth Whitening Thanksgiving Deals

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

This will occur instantly and no expenses will definitely be actually sent out, so you may simply appreciate your items. There is likewise a 30-day money-back warranty as well as a 5-year warranty on electronics. It holds after you activate it on the Snow site. SHORTCUTSProfessional-quality teeth whitening at homeOver 500,000 satisfied customersSuperior results without creating sensitivityHelps clear away tough coffee as well as wine stains30-days cash back promise Authorization Dental approves commission coming from third-party business.

After finding social media swamped along with folks going crazy regarding just how spectacular the Snowfall Teeth Whitening device is actually, I needed to locate out. One that incorporates all the very best pieces of pearly whites whitening and also neglects all the bad ones? Yeah, sure (Cheap Snow Teeth Whitening Thanksgiving Deals). If you are actually a tough enthusiast that just about anything too great to become true is actually exactly that, here is actually a teeth whitening system to show you incorrect.

Snowfall is actually additionally tremendously cost effective, at lower than 1/10th the cost of professional whitening at the dental practitioner. Also, Snow Teeth Whitening carries out certainly not result in level of sensitivity. You can easily have your frozen yogurt as well as consume it also! Or is that birthday cake? In any case, you may have both when your teeth aren’t befalling from blasts of chemical procedures that white bits often have.

Truthfully,. The LED ignited mouthpiece accelerates the whitening from the gel on your pearly whites leading to much faster, a lot longer enduring as well as even more reliable whitening without creating level of sensitivity. The LED illumination permits you to make use of Snowfall for a briefer time frame along with the same whitening has an effect on compared to other devices.

Cheap Snow Teeth Whitening Thanksgiving Deals

These are actually actual, unpaid Snowfall clients’ reviews/before and also after pearly whites whitening photos sent to us within the last thirty day. These are actually actual, unpaid Snowfall clients’ reviews/before as well as after pearly whites whitening photographes submitted to our team within the last 1 month. Incredible item !! Simply one that has actually benefited me! And no level of sensitivity!! AMAZING!! Bought this feeling very skepitcal (Cheap Snow Teeth Whitening Thanksgiving Deals).

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

Affection it !!! Absolute best loan I have actually invested on a doubtful item. Lastly something that actually meets its cases! I have actually been using this and will suggest, I have actually found a variation after 4 times I love this item! I have actually simply used it 3 opportunities quick and easy to use as well as no level of sensitivity…, I even overlooked to use the after item for the periodontals the first 2 times! …

It carries out exactly what they stated it will do, yes to every little thing!!!! I was actually fairly hesitant but I’m really amazed after 2 make uses of today. “The most effective pearly whites whitening body for sensitive pearly whites” “Take teeth whitening to the next level with an at-home kit that rivals a browse through to your area pleasant dental professional.” “2 friends commented on how white my pearly whites appeared after using this kit simply 2 opportunities!”.

When you get the Snowfall whitening device, you get the following in every set: Cream wands LED tray Shade guide that assists you track your progress Directions on how to utilize the systemGetting began along with Snowfall is easy, and the overview is going to walk you through whatever you need to have to understand on exactly how to utilize the whitening device.

Cheap Snow Teeth Whitening Thanksgiving Deals

Cheap  Snow Teeth Whitening Thanksgiving DealsCheap Snow Teeth Whitening Thanksgiving Deals

It doesn’t meet a number of its own guarantees, yet it’s still a rewarding financial investment if you are actually searching for whiter pearly whites, and is much better than a lot of other whitening products around. The Powder snow is reasonably straightforward to make use of. Brush your teeth before you start. Use the lotion to your pearly whites very carefully, ensuring you even the score protection.

After 10-30 moments, get rid of the holder as well as rinse your pearly whites. Replay this procedure over the following days as well as weeks. This method resembles a few other whitening items. Yet the serum and also LED light exposure make it various than most various other bits as well as holders. However different doesn’t constantly suggest much better.

Pearly white were visibly whiter after just a couple of days of making use of. And with extended use, there was remarkable improvement. Yellow teeth, although not powder snow white, were clearly whiter. It took a little bit longer than Snow assures, but the unit performs deliver outcomes rather swiftly.

Let’s face it. A few of one of the most addictive beverages and also routines are certainly not the very best for our teeths. Fortunately, if you desire white colored pearly whites, you do not must bid farewell to coffee, soft drink, desserts, tea, white wine, as well as cigarette smoking given that there are actually many teeth whitening kits to decide on (our experts still recommend that you stop the cigarette smoking routine for obvious main reasons). Teeth whitening is actually a $ 3.2 billion all over the world market.

Cheap Snow Teeth Whitening Thanksgiving Deals

Thankfully, if you would like to save loan, there are many helpful packages that you may use at residence. There are essentially 2 sorts of sets: ones that bleach your pearly whites to take discolorations off and also ones that physically scratch off the stains. Turned on charcoal grains have come to be fairly well-known in the last few years.

Whitening holders and strips have been actually the criterion for decades and commonly depend on carbamide or hydrogen peroxide. There is a 3rd sort of teeth whitening product that merely blasts your pearly whites along with LED lighting. Nevertheless, pros interviewed by the Wirecutter claim any increases coming from this treatment are brief. Simply the SmileDirectClub device in our overview uses this innovation, yet it is made use of combined with a whitening gel.

Expecting or even nursing girls ought to not use peroxide-based whitening items. It additionally isn’t ideal for kids under 14 years outdated. Cheap Snow Teeth Whitening Thanksgiving Deals. And also, you must not use peroxide for longer than two full weeks of regular make use of without the supervision of a dental expert. The FDA carries out not highly recommend making use of any sort of whitening gels along with a peroxide attention of higher than 18%.

You need to become careful making use of whitening products, as Individual Reports explains. As an example, if your dark pearly whites result from the organic decreasing of tooth polish that features getting older, whitening sets will definitely certainly not aid you. Also, they can not lighten dental fillings, false teeths, veneers, dental crowns, or hats. Pros claim that whitening sets are secure when utilized as directed – Cheap Snow Teeth Whitening Thanksgiving Deals.

Cheap Snow Teeth Whitening Thanksgiving Deals

For that reason, about a week before you start your whitening routine, use a toothpaste especially developed for people with delicate pearly whites or even one that develops enamel. As well as, bypass a time or more of making use of if you do experience level of sensitivity. The British Dental Diary has launched brand-new research study that mentions there wants medical evidence to verify the cosmetic as well as wellness advantages of turned on charcoal toothpastes as well as powders, and also they may result in tooth decay.