No clinical justification for replacing conventional toothbrushes with more expensive models

shutterstock_26227375 toothbrushes and toothpaste

The aim of this single-blind cross-over study was to compare the performance of three different toothbrush models in the control of dental biofilm and maintaining a healthy gingival condition.

The sample was randomly divided into three groups (A, B and C), each of which used one of the three toothbrushes tested. The brushes had bristles on the same plane, straight (T1) – bristles on different planes, straight arrangement (T2) bristles on different planes, straight and circular arrangement( T3).  Each experimental period lasted 15 days each, with three daily brushings and a 7-day washout interval was used between periods. The oral hygiene and gingival bleeding indices were recorded by a single, calibrated examiner blind to the brush used. Bristle wear was measured with a digital calliper at the end of each period.

They found that :-

  • The toothbrushes achieved similar results for the clinical parameters investigated (P > 0.05).
  • The three models exhibited a similar degree of bristle wear (P > 0.05).

The authors concluded that:-

the arrangement of the bristles had little influence over the removal of biofilm and gingival conditions. Thus, there is no clinical justification for replacing conventional toothbrushes with more expensive models.

Stroski ML, de Souza Dal Maso AM, Wambier LM, Chibinski AC, Pochapski MT, Santos FA, Wambier DS. Clinical evaluation of three toothbrush models tested by schoolchildren. Int J Dent Hyg. 2011 May;9(2):149-54. doi:10.1111/j.1601-5037.2010.00476.x. PubMed PMID: 21356018.

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Derek Richards

Derek Richards is the Director of the Centre for Evidence-based Dentistry, Editor of the Evidence-based Dentistry Journal, Consultant in Dental Public Health with Forth Valley Health Board and Honorary Senior Lecturer at Dundee & Glasgow Dental Schools. He helped to establish both the Centre for Evidence-based Dentistry and the Evidence-based Dentistry Journal. He has been involved with teaching EBD and a wide range of evidence-based initiatives both nationally and internationally since 1994.

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