Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening Offers Today 2020

Snowfall is actually a forerunner on the home pearly whites whitening market. The proprietary whitening formula is complimented for having the ability to remove also the most difficult stains without triggering sensitivity. SHORTCUTSProfessional-quality pearly whites whitening at homeOver 500,000 satisfied customersSuperior results without resulting in sensitivityHelps remove tough coffee and also red wine stains30-days cash back guaranteeSnow makes pearly whites bleaching beneficial without office gos to, annoying strips, or even messy request.

The Snowfall therapy is an LED-activated pearly whites whitening body that targets all sort of spots. This features those triggered by white wine, tea, coffee, and also cigarette. The patent-pending light-accelerated modern technology induces no adverse effects, as the wavelengths are actually not damaging. It is FDA-approved, enamel-safe, as well as doesn’t cause level of sensitivity. You don’t require any dental expert sees or prescriptions to carry out the treatment coming from the convenience of your very own home.

Kit Snow Teeth Whitening  Offers Today  2020Kit Snow Teeth Whitening Offers Today 2020

Snow additionally refuses to check on animals. There are 2 kits to decide on. The contents of each should last for over 90 uses. Let’s break what they contain and just how to decide on the most ideal one for you. This package is Snowfall’s best-known item, because of which they got their level of popularity.

The All-in-One kKt from Snowfall contains: a wired LED mouthpiece,3 whitening wands,1 extra-strength whitening wand, anda cover overview. The mouthpiece is actually suitable along with the Snow app, therefore you may regulate how deeply you wish to lighten your pearly whites. Kit Snow Teeth Whitening Offers Today 2020. It happens with a cable that allows you attach to USB, apples iphone, and also other mobile phones.

Kit Snow Teeth Whitening Offers Today 2020

It might be apparent, however the most significant distinction between the pair of kits is the wireless functionality. Over three million were spent on experimentation, creating new functions possible. The materials of The Wireless Charging At-home Teeth Whitening Kit include: a wireless LED mouth piece, a docking station,3 whitening wands,1 maximum strength whitening wand,1 numbing lotion, lip therapy, USB cable television, andan user’s manual.

The final attribute enables the treatment to be readjusted to your requirements. It plans immediately, so all you possess to do is trigger it on the application. The mouthpiece is actually water-proof. This means you may carefully utilize it in the downpour. What’s more, it sterilizes on its own while asking for. There is likewise a red-light therapy alternative for your gum tissues.

According to research study, it aids: deal with micro-organisms, minimize pearly white sensitiveness, boost blood flow in the periodontals, protect against declining gum tissue lines, increase bone tissue thickness, andminimize post-whitening swelling. The docking terminal features a hidden design, individuals typically contrast the means it tries to a bluetooth speaker. Besides disinfecting and also billing the mouth piece, it also functions as a penholder and traveling case for your serum wands.

Impacts are actually ensured to be actually obvious after 7 times of make use of. The sets are simple to use correct out of the carton, thus virtually anybody may whiten their teeth along with Snowfall items. Listed below is a standard introduction: Safe forThose with crowns, links, and also veneersTeeth with fillingsPregnant womenBreastfeeding momsSensitive dentitionAdditionally, they transport their items worldwide, so your area won’t limit you.

Kit Snow Teeth Whitening Offers Today 2020

It is suggested that you clean and also use floss your pearly whites before doing the therapy. Oral cleanliness helps eliminate any food items debris as well as contaminations (Kit Snow Teeth Whitening Offers Today 2020). This allows for even protection of the product. You prefer all areas of your pearly whites to become brightened!Moreover, oral plaque buildup as well as microorganisms, which often obtain entraped in between the cream and also the pearly whites, make it very likely for you to experience dental cavity or other dental issues.

This measure is certainly not required if your dentition doesn’t generally respond to temperature level or even wonderful or even challenging foods items. It certainly not simply reduces sensitivity yet also strengthens the pearly white enamel. The formula is actually additionally full of minerals and vitamins. If you make a decision to utilize the desensitizing lotion, perform this 15 minutes before the whitening session and afterwards wash.

Use either the normal or extra-strength whitening cream, relying on the end results you really want. Twist the stick to get the item out. You could need to do this up to 30 times when you initially utilize it. The comb idea will certainly aid you use the lotion. Picture you are coating a white colored picket fencing (Kit Snow Teeth Whitening Offers Today 2020).

If you love your periodontals wipe it off the best you can. A percentage won’t harm, however the item was made for teeth simply. The cordless LED tool has a “shake to wake up” feature. Listed below are actually the basic instructions for this attribute: Shake when to transform it on.

Kit Snow Teeth Whitening Offers Today 2020

A 3rd opportunity for the gum treatment. Shaking it 4 times are going to place it to rest. You may likewise download and install the app to customize your procedure. As soon as you are actually done, put the lighting back right into the owner. If you have the wired mouth piece rather, just connect it as much as your phone to activate it.

Keep it in for 9 to 30 minutes each time, 21-30 times in a row. If you happen to experience some level of sensitivity, take a 1 to 3-day rest and also continue the therapy eventually. It is actually greatest to administer your sessions prior to going to sleep. In this manner they do not hinder eating or even consuming.

The cordless kind will definitely self-sanitize while demanding. Store your whitening wands in the refrigerator after using them. This can easily aid them keep their toughness over a longer time frame. The sets consist of a supply for months of requests, so it’s a really good tip to take the most ideal achievable treatment of your items.

The body may be reviewed to a qualified procedure setting you back $500-$ 1,000. For a much reduced price you can possibly do this from the convenience of your own property. You may order your Snowfall whitening kit exactly on their website, however it is actually likewise offered on Amazon. Listed here is a review of just how much Snowfall whitening products presently cost: ProductPriceAll-in-one kit$ 199Wireless billing package$ 299Extra stamina refills$ 49Add-on for delicate pearly whites$ 25Serum refill sticks$ 25There are also repayment possibilities for those who don’t would like to be actually out the loan simultaneously – Kit Snow Teeth Whitening Offers Today 2020.

Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening  Offers Today  2020Kit Snow Teeth Whitening Offers Today 2020

This will definitely happen automatically and no costs will definitely be actually sent out, so you may simply enjoy your products. There is actually also a 30-day money-back promise and also a 5-year manufacturer’s warranty on electronics. It stands after you activate it on the Snow internet site. SHORTCUTSProfessional-quality teeth whitening at homeOver 500,000 happy customersSuperior outcomes without leading to sensitivityHelps get rid of challenging coffee as well as red wine stains30-days refund assure Authorization Dental accepts commission coming from third-party providers.

After finding social networks swamped with people going crazy about how excellent the Snowfall Teeth Whitening device is actually, I had to locate out. One that integrates all the ideal items of teeth whitening and also leaves behind out all the poor ones? Yeah, sure (Kit Snow Teeth Whitening Offers Today 2020). If you are actually a sturdy follower that everything too great to become true is exactly that, right here’s a teeth whitening system to confirm you wrong.

Snow is also super affordable, at less than 1/10th the price of specialist whitening at the dental professional. Also, Snow Teeth Whitening carries out certainly not result in sensitiveness. You can have your frozen yogurt and consume it too! Or is that cake? In any case, you can possess each when your teeth may not be befalling coming from bursts of chemical therapies that white strips usually consist of.

Truthfully,. The LED lighted mouthpiece accelerates the whitening coming from the gel on your pearly whites leading in a lot faster, longer lasting as well as extra effective whitening without causing sensitivity. The LED lighting allows you to utilize Snowfall for a shorter amount of time along with the same whitening has an effect on compared to other systems.

Kit Snow Teeth Whitening Offers Today 2020

These are true, overdue Snow clients’ reviews/before as well as after teeth whitening pictures accepted our company within the final 1 month. These are real, unpaid Snow consumers’ reviews/before and also after pearly whites whitening images accepted our team within the final thirty day. Incredible product !! Just one that has actually operated for me! And no sensitivity!! AMAZING!! Bought this emotion quite skepitcal (Kit Snow Teeth Whitening Offers Today 2020).

Kit Snow Teeth Whitening  Offers Today  2020Kit Snow Teeth Whitening Offers Today 2020

Passion it !!! Finest cash I have invested in an iffy item. Finally one thing that actually meets its insurance claims! I have been actually utilizing this as well as would certainly recommend, I have actually seen a distinction after 4 days I love this product! I have actually merely utilized it 3 opportunities simple to use and no level of sensitivity…, I even failed to remember to use the after product for the gums the initial 2 opportunities! …

It performs specifically what they stated it would certainly perform, yes to every little thing!!!! I was actually pretty suspicious but I am actually incredibly impressed after 2 make uses of today. “The most ideal teeth whitening device for sensitive teeth” “Take pearly whites whitening to the upcoming confess an at-home kit that matches a visit to your area welcoming dental practitioner.” “Pair of friends discussed exactly how white colored my pearly whites cared for utilizing this package only two times!”.

When you order the Snow whitening device, you get the adhering to in every package: Cream wands LED rack Shadow overview that helps you track your improvement Guidelines on just how to utilize the systemGetting began with Snowfall is effortless, as well as the guide is going to stroll you through everything you require to understand on just how to utilize the whitening unit.

Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening  Offers Today  2020Kit Snow Teeth Whitening Offers Today 2020

It doesn’t stay up to several of its commitments, however it’s still a worthwhile investment if you’re searching for whiter pearly whites, and also is actually far better than most other whitening products available. The Snowfall is fairly simple to utilize. Brush your teeth prior to you begin. Apply the serum to your pearly whites thoroughly, ensuring you get back at protection.

After 10-30 moments, get rid of the rack and also rinse off your pearly whites. Regular this process over the upcoming days as well as full weeks. This process corresponds to some other whitening products. But the product as well as LED light visibility produce it different than many various other strips as well as trays. Yet various doesn’t constantly imply far better.

Teeth were visibly whiter after only a couple of days of make use of. And also along with extended usage, there was actually dramatic development. Yellow pearly whites, although certainly not powder snow white, were noticeably whiter. It took a little longer than Snow assures, yet the body carries out offer outcomes fairly rapidly.

Permit’s encounter it. A few of the absolute most habit forming beverages as well as behaviors are actually not the most effective for our brilliantly whites. The good news is, if you prefer white teeth, you do not must bid farewell to coffee, soft drink, sweets, tea, wine, and also cigarette smoking due to the fact that there are several pearly whites whitening packages to select coming from (our team still advise that you stop the smoking practice for noticeable causes). Teeth whitening is a $ 3.2 billion around the world industry.

Kit Snow Teeth Whitening Offers Today 2020

The good news is, if you intend to save funds, there are several efficient sets that you may use in your home. There are actually generally pair of forms of sets: ones that bleach your teeth to take blemishes off as well as ones that physically scrape off the blemishes. Switched on charcoal grains have actually ended up being very well-known lately.

Whitening holders as well as bits have been the specification for years and also usually rely upon carbamide or hydrogen peroxide. There is actually a 3rd form of pearly whites whitening product that simply blasts your teeth along with LED lighting. Nonetheless, professionals talked to due to the Wirecutter claim any gains coming from this treatment are short-lived. Only the SmileDirectClub system in our manual uses this modern technology, yet it is used along with a whitening gel.

Expectant or even nursing ladies need to not utilize peroxide-based whitening items. It additionally isn’t appropriate for little ones under 14 years old. Kit Snow Teeth Whitening Offers Today 2020. And, you need to certainly not utilize peroxide for longer than two full weeks of everyday make use of without the direction of a dental practitioner. The FDA performs not advise making use of any kind of whitening gels along with a peroxide attention of more than 18%.

You require to be cautious making use of whitening items, as Individual News discusses. As an example, if your dark teeth result from the all-natural decreasing of tooth enamel that includes getting older, whitening packages will certainly not help you. Likewise, they may not bleach dental fillings, false teeths, veneers, dental crowns, or hats. Pros point out that whitening sets are risk-free when used as pointed – Kit Snow Teeth Whitening Offers Today 2020.

Kit Snow Teeth Whitening Offers Today 2020

For that reason, regarding a full week prior to you begin your whitening regimen, make use of a tooth paste specifically made for people with delicate teeth or one that develops polish. And, avoid a time or more of utilization if you do experience sensitiveness. The British Dental Diary has discharged new research study that claims there is actually inadequate medical documentation to confirm the cosmetic and health and wellness advantages of triggered charcoal toothpastes as well as particles, which they might create decay.

Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening Offers Today 2020

Snowfall is a leader on the residence teeth whitening market. The exclusive whitening formula is complimented for managing to erase also the most difficult blemishes without causing sensitivity. SHORTCUTSProfessional-quality teeth whitening at homeOver 500,000 delighted customersSuperior end results without creating sensitivityHelps remove difficult coffee and also red wine stains30-days cash back guaranteeSnow creates pearly whites whitening practical without any office visits, awkward strips, or even unpleasant request.

The Snowfall therapy is actually an LED-activated pearly whites whitening device that targets all sort of discolorations. This consists of those brought on by white wine, tea, coffee, and tobacco. The patent-pending light-accelerated technology results in no negative effects, as the wavelengths are not dangerous. It is FDA-approved, enamel-safe, as well as does not generate level of sensitivity. You don’t need any kind of dental expert visits or prescribeds to perform the therapy from the comfort of your very own home.

Kit Snow Teeth Whitening  Offers Today 2020Kit Snow Teeth Whitening Offers Today 2020

Snowfall also declines to evaluate on pets. There are actually pair of packages to select from. The materials of each must last for over 90 applications. Permit’s break what they consist of and just how to pick the most ideal one for you. This kit is Snowfall’s best-known product, due to which they gained their level of popularity.

The All-in-One kKt from Snowfall includes: a wired LED mouthpiece,3 whitening sticks,1 extra-strength whitening stick, anda cover guide. The mouth piece is actually suitable along with the Snow app, thus you may handle just how extremely you wish to whiten your teeth. Kit Snow Teeth Whitening Offers Today 2020. It happens along with a cord that permits you attach to USB, iPhones, and various other cell phones.

Kit Snow Teeth Whitening Offers Today 2020

It may be actually noticeable, but the largest difference between the pair of kits is actually the cordless function. Over three thousand were actually invested on trial and error, creating brand new functionalities possible. The components of The Wireless Charging Home Teeth Whitening Kit include: a wireless LED mouthpiece, a docking station,3 whitening wands,1 maximum toughness whitening wand,1 making less sensitive serum, lip procedure, USB cord, andan instructions.

The last attribute enables the procedure to be actually adapted to your needs. It programs automatically, so all of you must carry out is actually activate it on the application. The mouth piece is waterproof. This indicates you may securely use it in the shower. What is actually additional, it cleans on its own while demanding. There is also a red-light treatment choice for your gum tissues.

According to investigation, it helps: eliminate bacteria, minimize tooth level of sensitivity, boost blood flow in the periodontals, avoid receding gum lines, increase bone tissue quality, andminimize post-whitening swelling. The docking terminal includes a low-profile design, patients often contrast the technique it hopes to a bluetooth audio speaker. Besides sanitizing and asking for the mouth piece, it additionally functions as a penholder and trip case for your product sticks.

Results are ensured to be noticeable after 7 days of making use of. The packages are simple to use appropriate out of package, so practically any person can whiten their pearly whites along with Snowfall products. Here is a basic guide: Safe forThose with crowns, links, and also veneersTeeth with fillingsPregnant womenBreastfeeding momsSensitive dentitionAdditionally, they deliver their items worldwide, therefore your site won’t limit you.

Kit Snow Teeth Whitening Offers Today 2020

It is advised that you brush and use floss your teeth prior to performing the therapy. Oral cleanliness aids clear away any sort of food fragments and also impurities (Kit Snow Teeth Whitening Offers Today 2020). This allows even insurance coverage of the product. You prefer all surface areas of your pearly whites to become brightened!Moreover, cavity enducing plaque and also bacteria, which in some cases acquire entraped between the product as well as the teeth, make it most likely for you to experience dental caries or even other dental concerns.

This action is actually not needed to have if your teeth does not normally react to temp or pleasant or even difficult meals. It not merely lowers level of sensitivity yet additionally reinforces the tooth polish. The formula is additionally full of minerals as well as vitamins. If you choose to make use of the numbing product, do this 15 mins prior to the whitening session and after that wash.

Make use of either the frequent or extra-strength whitening lotion, relying on the end results you really want. Spin the wand to acquire the item out. You could must perform this up to 30 opportunities when you initially use it. The comb pointer will assist you administer the lotion. Picture you are actually painting a white picket fencing (Kit Snow Teeth Whitening Offers Today 2020).

If you receive it on your gum tissues rub it off the most ideal you can. A percentage will not injure, yet the product was actually made for pearly whites just. The wireless LED device possesses a “shake to wake up” feature. Here are the overall guidelines for this component: Shake the moment to transform it on.

Kit Snow Teeth Whitening Offers Today 2020

A third opportunity for the periodontal treatment. Drinking it four times will definitely place it to rest. You can easily also download and install the app to personalize your therapy. Once you are actually performed, position the illumination back right into the holder. If you have actually the wired mouthpiece instead, merely link it up to your phone to trigger it.

Keep it in for 9 to thirty minutes each time, 21-30 days in a row. If you occur to experience some sensitivity, take a 1 to 3-day break and continue the procedure eventually. It is actually ideal to conduct your treatments just before going to sleep. This method they do not disrupt eating or even consuming.

The cordless kind will definitely self-sanitize while charging. Outlet your whitening sticks in the fridge after utilizing all of them. This can help all of them keep their durability over a longer period. The sets consist of a supply for months of requests, so it’s a good idea to take the most effective possible treatment of your items.

The body could be compared to a qualified therapy setting you back $five hundred-$ 1,000. For a considerably lower rate you can easily perform this coming from the comfort of your own home. You may get your Snowfall whitening package directly on their internet site, however it’s likewise readily available on Amazon.com. Here is actually an overview of how a lot Snow whitening items presently cost: ProductPriceAll-in-one kit$ 199Wireless charging kit$ 299Extra strength refills$ 49Add-on for delicate teeth$ 25Serum refill wands$ 25There are actually even payment choices for those that don’t wish to be out the cash simultaneously – Kit Snow Teeth Whitening Offers Today 2020.

Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening  Offers Today 2020Kit Snow Teeth Whitening Offers Today 2020

This will certainly happen instantly and also no costs will be actually sent out, so you can easily merely enjoy your products. There is actually likewise a 30-day money-back promise and also a 5-year service warranty on electronic devices. It stands after you trigger it on the Snow site. SHORTCUTSProfessional-quality teeth whitening at homeOver 500,000 satisfied customersSuperior results without leading to sensitivityHelps get rid of difficult coffee and also red or white wine stains30-days cash back promise Authorization Dental approves payment coming from 3rd party companies.

After finding social networks swamped along with people raving about how awesome the Snow Pearly white Whitening device is actually, I must determine. One that integrates all the absolute best items of pearly whites whitening and also overlooks all the negative ones? Yeah, sure (Kit Snow Teeth Whitening Offers Today 2020). If you are actually a powerful believer that everything as well good to become true is actually specifically that, below’s a pearly whites whitening body to verify you wrong.

Snow is actually additionally incredibly budget-friendly, at much less than 1/10th the rate of specialist whitening at the dental expert. Additionally, Snow Teeth Whitening performs not result in sensitiveness. You may have your gelato and also consume it as well! Or is actually that covered? Either means, you may possess each when your teeth aren’t falling out coming from blasts of chemical procedures that white bits often contain.

Seriously,. The LED lighted mouthpiece increases the whitening coming from the gel on your pearly whites leading in quicker, much longer long-term and also more dependable whitening without creating sensitivity. The LED light allows you to make use of Snow for a much shorter time period of time with the exact same whitening impacts compared to various other devices.

Kit Snow Teeth Whitening Offers Today 2020

These are actually genuine, overdue Snowfall consumers’ reviews/before and after teeth whitening photographes undergone our team within the last thirty day. These are true, overdue Snow clients’ reviews/before as well as after teeth whitening photos sent to our company within the last thirty day. Incredible product !! Only one that has actually operated for me! And also no sensitivity!! AMAZING!! Bought this emotion very skepitcal (Kit Snow Teeth Whitening Offers Today 2020).

Kit Snow Teeth Whitening  Offers Today 2020Kit Snow Teeth Whitening Offers Today 2020

Affection it !!! Best money I have actually invested in a doubtful item. Eventually something that really meets its claims! I have actually been using this and also would certainly advise, I’ve found a distinction after 4 days I love this item! I have merely utilized it 3 times simple to use and no sensitivity…, I also overlooked to make use of the after item for the gums the very first 2 opportunities! …

It carries out specifically what they stated it would perform, yes to whatever!!!! I was rather doubtful yet I’m incredibly satisfied after 2 uses today. “The greatest teeth whitening system for delicate pearly whites” “Take teeth whitening to the following amount with an at-home set that measures up to a see to your area helpful dental expert.” “2 friends commented on how white my pearly whites cared for utilizing this set merely 2 opportunities!”.

When you order the Snowfall whitening device, you get the observing in every package: Serum sticks LED rack Shadow quick guide that aids you track your progression Directions on how to make use of the systemGetting began with Snow is effortless, as well as the resource will certainly stroll you with everything you need to understand on how to utilize the whitening unit.

Kit Snow Teeth Whitening Offers Today 2020

Kit Snow Teeth Whitening  Offers Today 2020Kit Snow Teeth Whitening Offers Today 2020

It does not reside up to a number of its own promises, however it’s still a worthwhile investment if you are actually trying to find whiter teeth, and is actually much better than the majority of various other whitening items available. The Snowfall is pretty simple to use. Comb your pearly whites prior to you begin. Administer the product to your teeth thoroughly, making certain you obtain even coverage.

After 10-30 minutes, get rid of the rack and rinse off your teeth. Repeat this procedure over the following days and also full weeks. This process is actually identical to a few other whitening products. Yet the lotion as well as LED light direct exposure create it different than most various other strips and trays. However different doesn’t always suggest much better.

Teeth were visibly whiter after just a few times of make use of. As well as along with expanded make use of, there was actually remarkable progress. Yellow teeth, although not snow white colored, were actually noticeably whiter. It took a little bit longer than Snowfall promises, yet the unit does deliver results relatively quickly.

Permit’s face it. A few of the absolute most habit forming beverages as well as behaviors are not the ideal for our pearly whites. Thankfully, if you really want white colored pearly whites, you do not possess to leave to coffee, soft drink, sweets, tea, white wine, and cigarette smoking since there are actually numerous teeth whitening packages to pick from (our company still encourage that you kick the smoking habit for obvious factors). Pearly white whitening is actually a $ 3.2 billion worldwide field.

Kit Snow Teeth Whitening Offers Today 2020

Fortunately, if you would like to spare loan, there are actually a number of efficient packages that you can easily use at house. There are practically 2 kinds of packages: ones that bleach your teeth to take discolorations off and also ones that literally remove the blemishes. Activated charcoal particles have actually become fairly popular lately.

Whitening trays as well as strips have been the criterion for many years and usually depend on carbamide or even hydrogen peroxide. There is actually a 3rd kind of teeth whitening product that simply blasts your pearly whites along with LED illumination. Nevertheless, experts interviewed due to the Wirecutter point out any kind of increases coming from this therapy are short-term. Simply the SmileDirectClub device in our manual uses this innovation, but it is actually used together with a whitening gel.

Expectant or nursing women must not use peroxide-based whitening products. It additionally isn’t appropriate for little ones under 14 years of ages. Kit Snow Teeth Whitening Offers Today 2020. And also, you need to certainly not utilize peroxide for longer than two weeks of day-to-day make use of without the supervision of a dental practitioner. The FDA does certainly not highly recommend using any type of whitening gels with a peroxide concentration of more than 18%.

You need to become cautious making use of whitening items, as Consumer Information explains. For example, if your dim pearly whites result from the organic decreasing of tooth polish that happens along with getting older, whitening kits will definitely certainly not help you. Likewise, they may certainly not bleach dental fillings, false teeths, laminates, dental crowns, or limits. Specialists mention that whitening kits are actually secure when used as routed – Kit Snow Teeth Whitening Offers Today 2020.

Kit Snow Teeth Whitening Offers Today 2020

Therefore, about a full week before you start your whitening program, make use of a tooth paste exclusively created for people with sensitive teeth or even one that accumulates enamel. As well as, skip a day or more of making use of if you carry out experience sensitivity. The British Dental Journal has actually discharged new research that states there wants medical proof to verify the cosmetic and wellness benefits of switched on charcoal tooth pastes and also powders, as well as that they might trigger tooth decay.