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The aim of the present study was to assess the influence of diet in tooth erosion presence in children and adolescents by meta-analysis and meta-regression.

Two reviewers independently performed the selection process and the quality of studies was assessed.

Studies published until May 2014 were identified in electronic databases: Pubmed, EBSHost, Scopus, Science direct, Web of Science and Scielo, using keywords.

Criteria used included: observational studies, tooth erosion and diet, subject age range 8–19 years old, permanent dentition and index. Meta-analysis was performed and in case of heterogeneity a random-effects model was used. Thirteen studies that fulfilled the inclusion criteria were selected. Higher consumption of carbonated drinks (p = 0.001) or acid snacks/sweets (p = 0.01 and for acid fruit juices (p = 0.03)) increased the odds for tooth erosion, while …