ABSTRACT
Introduction: Down syndrome (DS) is a genetic disorder caused by trisomy of chromosome 21. It is the most common chromosomal abnormality found in humans. Despite the motor difficulties and biofilm accumulation, individuals with DS have low caries prevalence. In this context it is assumed that saliva plays an important role in maintaining oral health. Objective: To evaluate the following salivary components: pH, buffering capacity and salivary flow volume in children with DS aging 2-8 years-old in the city of Curitiba (PR). Material and methods: Saliva samples were collected from 20 children with DS. The following parameters were evaluated: buffering capacity, flow rate, pH, and concentrations of calcium, urea and total proteins. Results: There was a normal distribution among the variables and the values observed were not statistically significant (p > 0.05). Conclusion: The results of this study revealed that there were no statistically significant differences in salivary flow, pH, buffering capacity, urea, calcium and total proteins in the subjects studied.