Orthodontic Treatment and Maxillary Anterior Segmental Distraction Osteogenesis of a Subject with Williams–Beuren Syndrome and Isolated Cleft Palate: A Long-Term Follow-Up from the Age of 5 to 24 Years

Table 1

Cephalometric analysis at various stages of treatment.

	Initial	Before face mask treatment	After face mask treatment	Before MASDO	Retention	2 years and 8 months after debonding
	September 1995	July 1999	April 2003	October 2008	August 2012	April 2015
Angular (°)
SNA	82.7	81.5	84.6	84.9	89.3	87.7
SNB	85.2	86.4	86.5	88.9	87.8	86.4
ANB	−2.6	−5	−1.2	−3.9	1.5	1.3
Mp-FH	41.8	37.1	37.5	34.1	34.1	34.6
Gonial angle	138.5	136.4	129.7	126.8	128.3	129.7
U1-FH	92.6	99.9	117.6	114.6	123	126.8
L1-Mp	72	64.6	87.4	76.2	74.6	76.1
Facial angle	82.2	87.6	87.8	92.6	92.1	90.4
Convexity	−4	−7.5	−4.3	−6.8	3.5	3.7
A-B plane	3.5	7.3	1.8	5.1	−1.5	−1
-axis	68.3	63.7	65.7	62.8	63.1	64.5
Linear (mm)
N-S	51.6	56	58.8	58.4	58.4	58.6
N-Me	90.7	100.6	115.7	120.2	121.7	123.5
N-ANS	37.7	42.1	49.9	51.3	48.5	50.4
ANS-Me	53.4	58.7	66.3	69.4	75.2	74.7
S′-Ptm′	23.9	26.2	30.4	26.8	28.6	26.3
A′-Ptm′	31	35.4	34.8	37.5	32.4	35.8
Gn-Cd	85.9	94.4	107.7	114.7	114.3	114.5
Pog′-Go	55.7	61.2	72.5	75.6	73.9	72.9
Cd-Go	38.3	41.2	48.4	52.8	53.5	54.8

MASDO: maxillary anterior segmental distraction osteogenesis.