The estimated exposure to hydrogen peroxide through tooth whitening mouthguards containing 10% carbamide peroxide is about 1.68 to 4.2 mg per day considering that a person swallows 10 to 25% of the whithening gel in the mouthguard during application. The techniques used to make custom-fitted mouthguards and the tooth whiteners themselves have improved recently. Hence, modern treatments use a smaller amount of whitener than older methods. Dr Ahmed Hussain, leading dental expert from Harrow on the Hill Dentistry has shared his expert advice and concerns about home teeth whitening to help reassure you. For safety reasons, in the UK, at-home teeth whitening kits may contain hydrogen peroxide at concentrations at up to 0.1%, whereas your dentist, using a custom-fitted mould, is able to safely use a concentration of up to 6% without harming teeth or gums. This means the professional treatment is usually able to achieve more noticeable lightening results. Dentist-only treatments such as laser whitening (in which the bleach solution is activated by a laser shone onto teeth) are also much faster, taking only 1-2 hours. It can also be hard to fully cover the contours where your teeth meet your gums without causing damage to your gums. The result is sometimes a white centre with yellow or grey edges. Disrupting your oral microbiome Ingredients: Polyvinylpyrrolidone, Polyethylene Glycol, Cellulose Gum, Menthol, Sodium Chloride, Citric Acid, EDTA

And to maintain a beautiful, unstained smile – or better yet, prevent tooth stains – good oral hygiene and lifestyle choices are essential. Help or advise your dependents to: Even the AADP notes that teeth whitening for kids and teens is safe and doesn't cause irreversible damage when correctly used. But "correctly" is the keyword, and without adult supervision, these "user errors" might occur: The estimated average amount of mouth rinses ingested daily is 3 g. If the mouth rinse contains 0.1% hydrogen peroxide, the resulting amount of hydrogen peroxide ingested per day will be 3 mg.

What are the strongest whitening strips?

Yes. Each treatment contains two lightweight strips individually shaped to fit differing top and bottom teeth profiles to ensure a perfect fit and comfort in use. The wrap over design secures the strip in place and makes application easy and they only need to be applied once a day. Pectin, PVP, glycerin, hydrogen peroxide, water, peppermint aroma, pentasodium triphosphate, sodium hexametaphosphate, polysorbate 80, natural lavender aroma, sucralose, limonene, and linalool. Ingredients: Polyvinylpyrrolidone, Cellulose Gum, Polyethylene Glycol, Bamboo Charcoal Powder, Menthol, Sodium Chloride, Citric Acid, EDTA. Lightweight, hydrogel structure allows for an increased loading of whitening ingredients, whilst also ensuring the ingredients stay effective for the full 30 minute treatment.

rinsing and brushing 2 to 3 times daily with products containing more than 6% hydrogen peroxide did affect the tongue and gums in some healthy people. Brush their teeth twice daily at the very least but even after every meal – especially after eating foods that can stain teeth – perhaps with fluorinated, whitening toothpaste. Teeth whitening treatments are not recommended for users under 18 years of age, or women who are pregnant or breastfeeding. Whitening kits will also not work on crowns, veneers or false teeth, so if you have any of these speak to your dentist. Don’t use the strips immediately after dental treatments such as crowns or fillings, or if you wear orthodontic braces. As the bleach used is at a weaker concentration than your dentist can supply, most at-home whitening methods take around two weeks to yield results. Expect results to last for around 12 months. Open to giving strips a try? See below for a selection of the best teeth whitening strips that pass UK regulations...

4.1 What is the level of exposure when using toothpastes and mouth-rinses containing hydrogen peroxide?

New Wisdom Intense White Enamel Boost Teeth Whitening Strips have been specially formulated with natural enamel strengthening minerals* to help boost your smile. The clinically proven whitening formula has been developed to remove surface stains from the enamel, to deliver safe and effective teeth whitening in just 5 days. The best teeth whitening strips can offer you a whiter smile without having to fork out for professional treatment you can’t afford. If you are looking for whiter teeth or need an extra boost in your oral health routine, trying teeth whitening products like strips is an easy, less expensive, and more effective short-term solution. The peroxide free formula is enamel safe and designed to effectively remove stains to whiten natural teeth. When people undergo tooth whitening treatment, the amount of hydrogen peroxide that is released into the saliva depends mostly on the bleaching system used and depends only partially on the amount of saliva produced by the individual.