About the Collis Curve toothbrush
Like many great ideas the Collis Curve toothbrush (world-wide patents) is very simple. For many years American dentist George Collis felt that straight bristle toothbrushes were difficult to use really effectively. The complicated 'scrub and roll' technique was hard to teach to children, and indeed many adults also failed to apply it. People would end up in his surgery to have their teeth cleaned with his curved scaling instruments. Using them as his model he designed a brush with two rows of curved bristles that were intended to mimic the action of his de-scalers.
It is extremely effective. In the clinical trial sponsored by the American Dental Association it removed up to 40% more plaque than a conventional toothbrush and improved the patients' gingival health by up to 68%.
Brushing technique? Just backwards and forwards, doing what comes naturally to most of us. The bristles' unique design takes care of the rest!