The influence of the utilization time of brush heads from different types of power toothbrushes on oral hygiene assessed over a 6-month observation period: A randomized clinical trial.

Purpose: This randomized clinical trial investigated the influence of the utilization time of brush heads from different types of power toothbrushes [oscillating rotating (OR) and sonic action (SA)93; on oral hygiene (plaque accumulation and gingival inflammation) over a 6-month observation period.

Methods: 49 participants were randomly allocated into two groups: use of the same brush head over 6 months (NR: non-replacement) or replacement of brush head every 4 weeks over 6 months (R: replacement). Each group was subdivided into two subgroups according to kind of toothbrush (TB) used (OR and SA).

Influence of the utilization time of different manual toothbrushes on oral hygiene assessed during a 6-month observation period: a randomized clinical trial.

Background: The aim of this randomized clinical trial (RCT) was to investigate whether 6-month continuous use of different manual toothbrushes (TBs) influences plaque removal and the degree of gingival inflammation compared to short utilization periods of 4 weeks each.

Methods: In total, 96 participants were randomly allocated into two groups: continuous use during 6 months (non-renewal group) or a change in TB every 4 weeks during 6 months (renewal group). Each group was subdivided into four subgroups (groups A to H; n = 12 each) according to the head size (normal or short) and bristle hardness (medium or soft) of the TB used.