Abstract
BackgroundRecent data show comparable deficits in oral cleanliness after tooth brushing in habitual users of powered toothbrushes (PT) and manual toothbrushes (MT). The present analysis explores the origin of these deficits by relating aspects of the observed tooth brushing behaviour to plaque after tooth brushing.MethodsUsers of rotating-oscillating PT (N = 48) and of MT (N = 52) brushed their teeth the best they could while being filmed. Video analyses assessed brushing time, number of sextants brushed sufficiently long (7.5 s per surface; NSBSL), brushing of outer surfaces with closed jaws, and brushing movements. Correlation analyses examined the relationship between these parameters and plaque after brushing (Marginal Plaque Index (MPI); Turesky modification of Quigley Hein Index (TQHI)) and gingivitis (Papillary Bleeding Index (PBI)).ResultsIn PT users, correlations between behaviour and MPI-scores were significant for the NSBSL (outer surfaces: rho = − 0.249; inner surfaces: rho = − 0.510) and brushing duration (outer surfaces: rho = − 0.399; inner surfaces: rho = − 0.509). In MT users, vertical movements on the outer surfaces were positively related to MPI (rho = 0.299). In contrast, circular movements correlated negatively with MPI in those who brushed all outer sextants sufficiently long (n = 47: rho = − 0.294). In both groups, PBI-scores on the inner surfaces were negatively correlated to NSBSL and brushing duration (rho = − 0.327 − rho = − 0.246).ConclusionNSBSL and brushing duration appear to play an important role for brushing effectiveness and gingival health in PT and MT users. Whether PT users apply brushing movements or not apparently does not affect the result. In MT users, circular movements seem to be more efficient than vertical movements on the outer surfaces.
Highlights
Recent data show comparable deficits in oral cleanliness after tooth brushing in habitual users of powered toothbrushes (PT) and manual toothbrushes (MT)
The present analysis focuses on plaque after tooth brushing to the best of one’s abilities as measured by the Marginal plaque index (MPI) [9], as well as by the Quigley and Hein Index modified by Turesky (TQHI) [10]
No group differences were found with respect to duration of brushing occlusal (p = 0.07) or outer surfaces (p = 0.26) but PT users brushed their inner surfaces significantly longer (p = 0.01) than MT users
Summary
Recent data show comparable deficits in oral cleanliness after tooth brushing in habitual users of powered toothbrushes (PT) and manual toothbrushes (MT). A recent study analysed whether habitual users of a powered toothbrush (PT) would achieve better results in terms of oral cleanliness after brushing as compared to habitual users of a manual. Though brushing duration exceeded general recommendations [6], plaque persisted at almost half of the sections of the gingival margin in both groups [7]. The question arises as to what characterizes the tooth brushing behaviour of both groups and how these aspects relate to brushing effectiveness in terms of oral cleanliness after brushing
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