Fig. 2From: Laser doppler flowmetry to detect pulp vitality, clinical reference range and coincidence rate for pulpal blood flow in permanent maxillary incisors in Chinese children: a clinical studyTrend in PBF value in children of different ages, which shows the trend in the PBF of 12/11/21/22 teeth with age and that the PBF gradually increased with age and then tended to be stable or decreased slightlyBack to article page