The ideal technique for cleaning teeth according to research experts includes gentle strokes, 45° angle at the gum-line, gentle massaging motions, and sweeping large surfaces; recommended twice a day, each for 2 minutes (≈30 s per quadrant). Soft pressure is necessary (to prevent tilting of brushes). Replace brush or head every 3 months; floss or interdental cleaning once a day; some studies show electric brushes reduce plaque by 5–15% more