Clinical Approach to a Suspected Case of First Branchial Arch Syndrome

Table 1

Cephalometric analysis.

	Patient	Mean ± SD
Facial angle	87.7	83.2±2.9
Convexity	7.0	9.5±4.4
A-B plane	−0.7*	−6.2±2.7
Mandibular plane	25.6*	34.0±3.8
𝑦-axis	64.6	66.2±3.0
Interincisal angle	141.7*	118.7±7.5
L-1 to mandibular	89.3	95.4±6.3
SNA	84.2	81.5±4.2
SNB	82.6	77.1±3.8
U-1 to SN	96.5	105.4±5.2
Gonial angle	118.8*	131.0±5.6

Asterisks indicate the out of range of 2SD limits.