Objective to investigate the impact of the severity of microcephaly caused by the Zika virus (MCZ) on tooth eruption and orofacial structures of children. Design This case series study developed the research at the Mens Sana Rehabilitation Center, Arcoverde, Brazil. The study included 27 children diagnosed with MCZ. We performed the data collection in June 2018 through a questionnaire answered by the legal guardians, followed by a clinical examination of the children. The data were analyzed by the Mann–Whitney and Fisher's exact tests (p = 0.05). Results The final sample was composed of 20 children. Of these, 13 (35.0%) had severe microcephaly, 5 (30.0%) had altered sequence of tooth eruption, 10 (50.0%) had delayed eruption, and the mean number of decayed teeth was 2.3. The most identified orofacial changes were teeth grinding habit (65.0%), difficult chewing (50.0%), and non‐nutritive sucking (50.0%). The Mann–Whitney test showed that the severity of microcephaly did not affect tooth eruption (p = 0.581). The Fisher's exact test showed that the severity of microcephaly was not associated with orofacial changes (p > 0.05). Conclusions The severity of MCZ does not seem to influence changes in deciduous tooth eruption and the presence of orofacial anomalies.

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Objective: To verify whether access to information about oral hygiene influenced the practices of caregivers of children with microcephaly caused by Zika virus (ZIKV).Methods: A case series study was developed at the Mens Sana Rehabilitation Center, in the municipality of Arcoverde, Pernambuco, Brazil. The study universe included the mothers of 32 children with microcephaly caused by Zika virus. Data collection took place in June 2018 and was carried out through a structured questionnaire.The variables studied comprised socioeconomic issues, habits, diet, and knowledge about oral hygiene. Fisher's Exact and Pearson's Chi-square tests were used with a significance level of 5%.Results: Out of 32 individuals eligible to participate in the study, only 27 were selected.Most mothers reported receiving information about oral hygiene from their infants (63.0%). Fisher's Exact and Pearson's Chi-square tests showed that access to oral hygiene information was associated with mother's education, family income, regular visits to the dentist, frequency of tooth brushing, age at which the infant started brushing, and brushing time (p < 0.05). Conclusion:Access to information about oral hygiene positively influenced the oral health care of mothers with their children with microcephaly caused by ZIKV.