Saqib Naeem, Saad Asad, Arooj Zafar.
Nasal morphology assessed through powel's triangle in patients with convex profile.
Pak Oral Dental J Jan ;35(4):606-9.

Introduction: It can safely be said that nose has a great impact on the facial appearance of a person. An orthodontist must keep this consideration in mind while planning treatment. Too big or too small nose can be camouflaged by tooth movements. If the prominence and length of the nose is acceptable to the patient, it must be made sure that it remains the same way even after the orthodontic treatment. Moreover some orthodontic procedures like Rapid Palatal Expansion, face mask therapy, extractions and orthognathic surgery has an effect on the nasal morphology. Aim of this study is thus to assess nasal morphology in patients with convex profile using Powel's Aesthetic Triangle, with the objective that this will help in planning the orthodontic cases better. The study was conducted on lateral profile photographs of thirty five patients at university College of Dentistry, The University of Lahore. All reported patients, ages twelve and above, who had retrognathic profile on visualization were selected irrespective of their sex and their nasal morphology was assessed by Powell's Aesthetic Triangle. In patients with retrognathic profile and the Dental Class II div 1 Nasomental angle was found to be decreased 119±2.28, Naso-frontal angle was found to be increased 141.70±6.06 and Naso-facial angle was found to be similar 36.46±3.05 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.

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