The skeletal and soft tissue facial profil in adolescent and adult

الملخص EN

Aims: To evaluate the norms for several cephalometric soft tissue measurements and to investigate differences in the mean values of these measurement between two age groups (11–14 and 18–25) and between two gender.

Materials and Methods: The adolescent sample consists from 30 subjects (15 for each gender) with age range from 11 –14 years.

The adult sample consists from 30 subjects (15 for each gender) with age range 18–25 years.

The two groups satisfying the criteria of balance facial pro¬file, class I molar relation ship and normal over bite–over jet relation ship.

Ten skeletal and soft tissue measurements were obtained from tracing lateral cephalometric radiograph.

The data was analyzed using descriptive statistic and student t– test.

Results: During adolescence, no significant differences were found between males and females.

During adulthood, the males having higher values for all mea¬surements (except nasolabial and mentolabial angles) but statistically not significant.

From adolescent to adult males, the angles of facial convexity, Z– angle in addition to lower lip length and nasal depth are significantly different with the adult male having the higher value.

For females, the lower lip length and nasal depth significantly higher in the adult period.

Conclusions: The adult males having relatively straighter facial profile.

In addition, Z– angle also greater in the adult males than during adolescence.

For both genders, the nasal depth and the vertical height of lower lip were significantly greater in adults.

Key words: Soft tissue profile, nasolabial angle, mentolabial angle, nasal depth.