Answer:
Advantages:
Better binocular visualization for teaching and studying deformed anatomy.
Control of bleeding by electrocautery.
More accurate diagnosis.
More precise correction of deformities.
Disadvantages:
Unnecessary dissection of the dome if it is not needed.
Possibility of displacing the lateral crura.
Separations and secondary healing of the transverse columellar incision.
Additional edema of the nasal tip persisting for several months.
Increased operative time for incision closure.
Probably not necessary if the cartilaginous tip or vault do not need to be modified much.