In cephalometric analysis performed on all cases, the patients' mentocervical, nasomental
, and Legan facial convexity angles were measured, and retrognathia diagnosis was made.
Nasal volume increase, nose height increment, increase in nasolabial, nasofrontal, and nasomental
angle, decrease in nose length, and nasofacial angle were observed.
In patients with retrognathic profile and the Dental Class II div 1 Nasomental angle was found to be decreased 1192.28, Naso-frontal angle was found to be increased 141.706.06 and Naso-facial angle was found to be similar 36.463.05 to the values in patient with orthognathic profile.
In patients with retrognathic profile a decrease in nasomental angle, an increase in naso-frontal angle and comparable nasofacial angle were recorded.
Key Words: Powell's Triangle, Nasomental Angle, Nasofacial Angle and Nasofrontal Angle.
3 Nasomental angle (120-1320): The nasomental angle is described by a line drawn through the nasal dorsum intersecting a line drawn from the nasal tip to the soft tissue at the pogonion.
The nasomental angle is an angle between a line drawn through the nasal dorsum and a line drawn from the nasal tip to the soft tissue at the pogonion.