What is unique about the Sonicare Elite?       Sonicare’s revolutionary, patented technology is the big difference. The outstanding reach of the brush head, supported by the wide sweeping motion and dynamic fluid activity, provide excellent ease and effectiveness of cleaning.             What is the clinical proof behind Sonicare’s efficacy?       Our claims are based on sound scientific research on Sonicare Elite and previous Sonicare models, conducted at clinical sites or in cooperation with leading research institutes. Findings have appeared in peer-reviewed journals such as The American Journal of Dentistry, and new results will be announced in similar publications or at major dental research meetings. Read existing Research Highlights             What is ‘plaque biofilm’?       In the past, dental plaque was studied by looking at its ‘components’ – the individual micro-organisms that together make up plaque. A biofilm is composed of millions of interacting micro-organisms. Research now indicates that microbes exhibit properties in biofilms that they do not as separate, isolated entities. Microbe interaction seems to make biofilms more difficult to remove, less susceptible to anti-microbial agents and, therefore, more likely to cause infection.             What is the difference between the Sonicare Elite e9000, e7000 and e5000 series?       All series have the same patented sonic technology. The e9000 series is top of the bill with its Customer Care System that features two speeds (Max and Gentle) and two brush heads (standard and mini). The e7000 series has several luxury features. The e9000 and e7000 series models have a slimmer handle than the e5000 series, with added soft grip. The e5000 series offers the same clinical results as the e7000 series, but with fewer extras.             How do I clean the Sonicare?       Rinse the head and bristles after each use. On a weekly basis, clean the handle and the brush head (including under the nut) using mild soap, water and a moist clean cloth. Clean the charger base periodically. Always be sure to unplug the unit first.             How often should Sonicare brush heads be replaced?       The brush head should be replaced at least every six months (every 4 months if it is used by someone with braces).             If I programme the Sonicare for 2.5-minute brushing sessions, how many brushings will I get on a full charge       The total amount of time does not change: the charged Sonicare Elite provides 56 minutes worth of brushing. You get either 22 2.5-minute brushings or 28 2-minute brushings.             Why does the Sonicare Elite have high and low power options?       The new dual speed control allows patients to set the brush speed to meet their specific needs. This feature improves personal comfort for, among others, periodontal post-surgery patients, patients who have recently had implants, those who have had scaling & root planning and orthodontic patients who have had their arch wire tightened.             Does Philips guarantee good results with Sonicare?       Yes – we guarantee: A whiter, healthier smile in 28 days Better check-up results after just 90 days A warranty for two years of outstanding operation