Prevention of white spot lesions: study results

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Prevention of white spot lesions


Schaan, Liechtenstein - 17 June 2009

Two varnishes, one containing chlorhexidine and the other fluoride, from Ivoclar Vivadent effectively help to prevent the formation of new white spot lesions if used in combination; these are the findings of a recent clinical study at the University of Bern.

Initial lesions are very common in the context of orthodontic treatment using multibracket appliances. A study carried out at the University of Bern compared the effectiveness of ozone versus a combination of a chlorhexidine-containing protective varnish and a fluoride varnish in preventing white spot lesions (Kronenberg et al. 2009). Conclusion: The combined application of chlorhexidine and fluoride varnishes is much more effective than the application of ozone. The products that were used in the test were Cervitec (containing chlorhexidine) and Fluor Protector (containing fluoride) from Ivoclar Vivadent. The ozone product that was used was HealOzone from KaVo.

Study details
The average duration of the clinical study was 26 months. A total of 20 test persons, all around 15 years old, wearing multibracket appliances and showing signs of insufficient oral hygiene, participated in this split-mouth study. The teeth of the test persons were treated every three months per quadrant either with ozone or with the combination of Cervitec and Fluor Protector or remained untreated and were just checked. Cervitec and Fluor Protector were successively applied during one appointment. This protocol was successful: The quadrants treated with the varnishes showed significantly fewer white spot lesions (+0.7%) than the areas treated with ozone (+3.2%) and the untreated areas (+2.1%).

Kronenberg O., Lussi A., Ruf S.: Preventive effect of ozone on the development of white spot lesions during multibracket appliance therapy. Angle Orthod. 2009; 79: 64-69