Bovine Tooth Discoloration Induced by Endodontic Filling Materials for Primary Teeth

Table 1

Distribution of experimental materials.

Group	N	Material	Manufacturer
I	15	MTA-based material	Angelus, Londrina, PR, Brazil
II	15	Vitapex	Neo Dental International Inc., Federal Way, United States
III	15	Calen thickened with zinc oxide (Calen + ZO)	S.S. White, Artigos Dentários, Rio de Janeiro, RJ, Brazil
IV	15	Zinc oxide eugenol cement	Biodinâmica, Ibiporã, PR, Brazil
Control	15	No endodontic material	—