The average grades for males and females in the first questionnaire were 2.25 ± 0.34 and 2.04 ± 0.29, respectively. The average grade in the second questionnaire was 2.50 ± 0.48 for males and 2.47 ± 0.49 for females. In the first questionnaire, the 6th year, 5th year, and 4th year students obtained an average grade of 2.10 ± 0.30, 2.12 ± 0.40, and 2.53 ± 0.46, respectively, and the average grades in the second questionnaire were 2.44 ± 0.49, 2.45 ± 0.52, and 2.43 ± 0.46, respectively. Conclusion: Males had a better perspective regarding professional ethics compared with females. However, regarding the adherence of faculty members to ethical principles, there was no significant difference between the two sexes. None of the variables of age, year of study, and marital status had a significant effect on the students' perspective of professional ethics.

The major demand for orthodontic treatment is associated with esthetic complaints rather than with the severity of occlusal irregularities. This study evaluated the relationship between orthodontic treatment need based on index of complexity, outcome, and need (ICON) and orthodontic-specific quality of life (QOL) among high school students in Shiraz.