• Data reference period
• Place of residence (Portugal)
• Sex

• RESIDENT POPULATION:  Set of persons who, regardless of being present or absent in a given housing unit at the moment of observation, have lived in the place of their usual residence for a continuous period of 12 months prior to the moment of observation, or have arrived to the place of their usual residence during the period of 12 months prior to the moment of observation, with the purpose of living there for a year, at least.
• DENTIST MEDICAL DOCTOR:  Health professional that has a degree in dental medicine and the respective professional order's authorization to practice dental medicine.
• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).

[Resident population with 18 years old that consulted a dentist in the 12 months preceding the interview/ Resident population with 18 years old]*100