When evaluating a patient toothbrushing method you notice th…

When evaluating a patient toothbrushing method you notice they angle the toothbrush bristles apical along the long axis of the tooth and the bristles of the toothbrush are gently placed subgingivally into the sulcus. The brush is then slightly rotated to 45* angle and vibrated with very short horizontal strokes (a jiggle). Which method of toothbrushing is the patient utilizing?