Aim: The objective of this study was to estimate the Out-Of-Pocket Expenditures (OOPEs) incurred by households on dental care, as well as to analyze the sociodemographic, economic, and oral health factors associated with such expenditures. Method: A cross-sectional study was conducted among 763 schoolchildren in Mexico. A questionnaire was distributed to parents to determine the variables related to OOPEs on dental care. The amounts were updated in 2017 in Mexican pesos and later converted to 2017 international dollars (purchasing power parities-PPP US ).Multivariatemodelswerecreated:alinearregressionmodel(whichmodeledtheamountofOOPEs),andalogisticregressionmodel(whichmodeledthelikelihoodofincurringOOPEs).Results:TheOOPEsondentalcareforthe763schoolchildrenwerePPPUS53,578, averaging a PPP of US 70.2±123.7perchild.DisbursementsfortreatmentweretheprincipalitemwithintheOOPEs.ThefactorsassociatedwithOOPEswerethechild′sage,numberofdentalvisits,previousdentalpain,mainreasonfordentalvisit,educationallevelofmother,typeofhealthinsurance,householdcarownership,andsocioeconomicposition.Conclusions:TheaveragecostofdentalcarewasPPPUS70.2 ± 123.7. Our study shows that households with higher school-aged children exhibiting the highest report of dental morbidity-as well as those without insurance-face the highest OOPEs. An array of variables were associated with higher expenditures. In general, higher-income households spent more on dental care. However, the present study did not estimate unmet needs across the socioeconomic gradient, and thus, future research is needed to fully ascertain disease burden