Fig. 4.

Unstimulated saliva flow measured by BokaFlo™ correlates with PDT. Passive drool test (PDT) identified 45 (56.9%) participants with saliva flows ≥ 0.3 ml/min, the lower limit of normal salivary function. 17 (21.5%) participants had measured PDT results of less than or equal to 0.1 ml/min, the clinical range for hyposalivation. BokaFlo™ identified 50 (63.3%) participants with saliva flows ≥ 0.3 ml/min, the lower limit of normal salivary function. 23 (29.1%) participants had measured PDT results of less than or equal to 0.1 ml/min, the clinical range for hyposalivation