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An assessment of plaque and gingivitis using a Philips Sonicare 4000-5000 Series* and a manual toothbrush after a four-week period of home use | Philips Sonicare Clinical Study (2022)
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Sonic Electric Toothbrush for Adults Dissolve Plaque on Teeth, Vibrating Toothbrush 4 Modes with Smart Timer 44,000 VPM Motor Whitening Rechargeable Cordless Fast Charge(Pink) : Amazon.co.uk: Health & Personal Care
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