Fig. 1
From: Toothbrushing: to the best of one’s abilities is possibly not good enough
Histogram of QIT-S scores at palatinal and vestibular sites, respectively. The 1992 cohort had been asked to brush their teeth like they commonly do while the 1995 cohort had been asked to brush their teeth to the best of their abilities. A statistical significant cohort difference is found for vestibular sites, only. QIT-S palatinal is significantly lower than QIT-S vestibular in both cohorts