“…The tooth fragments were immersed, depending on the group, individually in 25 ml of apple vinegar with a pH of 2.44 (Castelo™, SP, Brazil) for two minutes, and in 25 ml of lime juice with a pH of 2.4 (Castelo™, SP, Brazil) for two minutes, under mild agitation, once a day, for three weeks. Later, the fragments were washed with distilled water for one minute, dried, and stored in artificial saliva for the time remaining (Rios et al, 2018).…”