Table 1

Demographic data of the included studies

Author, year	Country, place of study+years of intervention	Study design	Sample*	Gender	Age (years), mean±SD	Dental classes I, II and III	Type of OSA: moderate or severe	Evaluation: 3D or 2D	Type of surgery: MMA or MMA+Gp
Fairburn et al ,17 2007	University of Alabama at Birmingham, Birmingham, AL, USA, 2000–2003	R	n=20	M: 13 F: 7	47.6±10.0	NA	Severe	3D	MMA
Jones et al,18 2010	University of Adelaide, Australia, 2002–2004	R	n=20	NA	NA	NA	Severe	2D	MMA±Gp
Ronchi et al,19 2013	Sant’Anna Hospital Como, Italy, San Raffaele Hospital, Milan	R	n=15	M: 11 F: 4	42.3±9.5	I: 5 II: 9 III: 1	Severe	2D	MMA±Gp
Bianchi et al,20 2014	Sant'Orsola Malpighi University Hospital, Bologna, Italy, 2008–2011	R	n=10	M: 10 F: 0	45±14	NA	Severe	3D	MMA
Schendel et al,21 2014	Stanford University, Stanford, California, USA	R	n=10	M: 8 F: 2	46.4±9.7	I: 2 II: 8	Severe	3D	MMA±Gp
Hsieh et al,22 2014	Chang Gung Memorial Hospital, Taoyuan, Taiwan	P	n=16	M: 12 F: 4	33±7.9	I: 1 II: 15	Severe	3D	MMA
Veys et al,23 2017	Bruges, Belgium, January–December 2015	P	n=11 (only six assessed: pts 1, 2, 3, 5, 7 and 11	M: 8 F: 3	44.7±9.5	NA	Moderate to severe	3D	MMA±Gp
de Ruiter et al,24 2017	Academic Medical Centre of the University of Amsterdam, 2011–2015	R	n=62	M: 54 F: 8	54 (47–61)	NA	Severe	2D	MMA

*In the sample of Veys et al,23 only six pts were assessed out of 11.
F, female; Gp, genioplasty; M, male; MMA, maxillomandibular advancement; NA, not assessed by the authors; P, prospective; pt, patient; R, retrospective.