The dental plaque is differentiated into two categories by Pavel Godoroja and Olga Dul‑ghieru, supra‑ and sub‑gingival.
Identification of the supra‑gingival dental plaque is difficult for both patient and dentist, because of the color similarity between the tooth surface and dental plaque.
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Plaque identification may be done either by screening the plaque directly from the tooth surface, changing its color with a disclosing solution, or by using the ability of natural teeth to fluoresce under blue light.
Velina Zankova, Odontóloga of Bulgaria, shares of a very particular knowledge of the specialty of periodontics.
Using flipcharts, made a short video about the mechanism in the formation of plaque. Students appreciate it.