Surgical Process
Second Angle
Formation
Lateral Cortical
Osteotomy
Chin Shape to
be Made
Swelling
Outcome
Previous Long-Curved Square Jaw Surgery
Resect the lower jaw except for the anterior mandible body,
and the possibility of producing a second angle and
rectangular face with a wide chin
Probable
Performed at the posterior making too steep a contour
of the lower jaw
Rectangular with Wide Chin
Severe and long-lived with excessive
detachment and damage of tissue
Rectangular face with too steep and exaggerated a
contour and possible second angle formation
Anterior Square Jaw Surgery
Reduces the anterior mandible body and produces
a slim V-line face without the second angle
Unlikely
Performed at the anterior making a natural-looking,
soft V-line contour of the lower jaw
Oval V-Line
Slight and short-lived without unnecessary
tissue damage
Natural-looking, slim V-line face without
second angle formation