The Effect of Pterygomasseteric Sling’s Area in the Postoperative Stability after Mandibular Setback Surgery

Table 1

Student’s -test for significance for the menton and area of PMS (total group; ) among T1, T2, and T3.

Variable	Mean	SD	p value
Horizontal change (mm)
T21		4.34	<0.001
T32	0.6	3.17	0.225
T31		4.02	<0.001
Vertical change (mm)
T21	0.6	1.85	0.059
T32		1.80	0.098
T31	0.1	1.65	0.743
Area of PMS (mm^2)
T1	1693.8	237.77
T3	1402.8	231.89
T31		149.37	<0.001

: number of patients; PMS: pterygomasseteric sling; significant ; T21: immediate surgical change; T32: postoperative stability; T31: final surgical change.