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Exclusion criteria regarding participation in the clinical research.
| Exclusion criteria |
| Aged 60 or over |
| Elevated body temperature, acute infection |
| Primary, congenital defects of the stomatognathic system |
| Neoplastic processes within the oral cavity |
| Pregnancy, breastfeeding |
| Mental retardation |
| Traumas and surgeries within the facial portion of the skull |
| Epilepsy |
