Table 1.

Inclusion/exclusion criteria.

Inclusion Criteria	Exclusion Criteria
Over 18 years of age.	Volunteers who do not meet the inclusion criteria.
Students who are not in their last year of undergraduate or graduate studies (potential loss).	Volunteers who, during the study, are diagnosed with such wear that it implies a restorative treatment of both arches with fixed.
Those who are not going to modify their current oral morphology status (orthodontics, surgeries, extractions, fixed, or removable rehabilitations).	Volunteers who are pregnant.
Those who have signed the previous informed consent.	Volunteers who have any kind of academic relationship with the investigators of this study.