This observational study aims to validate the French version of the Smile Esthetics-Related Quality of Life (SERQoL) questionnaire in adult patients recruited in two APH-HP dental departments. The study evaluates internal consistency, test-retest reliability, and construct validity of the questionnary. A total of 120 patients will be recruited from dental departments at two AP-HP hospitals.

This psychometric validation study involves adult patients receiving their first consultation at AP-HP dental services. The SERQoL questionnaire will be completed twice (at baseline and after 15 days). Internal consistency (Cronbach's alpha), test-retest reliability (intraclass or Pearson correlation), and factor structure (confirmatory factor analysis) will be analyzed. No clinical intervention is involved, and participation will not alter standard care.

Inclusion Criteria:

• Age ≥ 18 years
• Patients attending their first periodontal consultation at the oral medicine departments of Rothschild Hospital (AP-HP) or Charles Foix Hospital (AP-HP)
• Patients who speak and understand French well enough to read and understand the study information sheet.
• Patients who are informed and do not object to participating in the study

Exclusion Criteria:

• Patients under guardianship or curatorship

• Patients who are completely edentulous, whether the edentulism is compensated or not

  • Patients with multiple dental agenesis (more than 6 teeth), amelogenesis, or syndromic or non-syndromic dentinogenesis imperfecta
  • Patients with psychiatric illnesses that may impact body image, such as patients with anorexia-bulimia or body dysmorphic disorder.

Adult patients attending a first consultation in the dental department of Rothschild or Charles Foix hospitals (AP-HP). Participants must speak and understand French and have not opposed participation.