3D simulation is increasingly used in rhinoplasty. However, during the operation,
there is no tool to directly link the 3D simulation results with the intraoperative
operation. Doctors rely on 3D simulation results only according to their intuition.
Recently, the authors have discovered a simple, low-cost, and practical method for
intraoperative assessment: a film model can be made according to the contour of the
nose shape in its midsagittal view. The authors aimed to evaluate the effectiveness
of the innovative method for intraoperative assessment of nasal shape in rhinoplasty.
Thirty-nine patients who underwent rhinoplasty for the first time between January
2019 and January 2021 were included in this study. All the patients confirmed ideal
nasal shape based on preoperative three-dimensional photography (INOVA 3D-EX). In
the guide group, procedures were based on guide of the film model and a picture of
3D simulation, and in the control group, procedures were performed based on the surgeon's
intuition and a picture of 3D simulation.
There were no statistical differences in basic data between the two groups before
operation. Both groups showed a satisfactory correlation. Except for the columellar
lobular angle, the ICC of nasal length, nasal depth, dorsum height, columella length,
nasofrontal angle, nasorostral angle, and nasolabial angle were all stronger in the
guide group than in the control group.
This study demonstrates the usefulness of the nasal-shaped film model, which is made
according to the contour of the nose shape in its midsagittal view. This approach
is simple, low-cost, and practical.