Table 1.

Exams and corresponding variables

Exams	Variables	Acronyms	Brief description
Physical evaluation	Body Mass Index	BMI	Weight/height2
	Neck circumference	NC	Largest diameter of the neck (mm)
	Mallampati classification	Mallampati	Classification of oropharynx soft tissue hypertrophy
	Mandibular Sagittal Position	MSP	Distance from Gnation to Nasion, 3 categories (retrusive, normotrusive, protrusive)
	Overjet	Overjet	Sagittal distance from the upper and lower incisors’ incisal borders (mm)
Questionnaires	Epworth Sleepiness Scale	ESS	Tool to assess daytime somnolence
	Quebec Sleep Questionnaire	QSQ	Tool to assess OSA-related quality of life (average of all domains)
		QSQ I	“Sleepiness” domain
		QSQ II	“Diurnal symptons” domain
		QSQ III	“Nocturnal symptons” domain
		QSQ IV	“Emotions” domain
		QSQ V	“Social interactions” domain
Home sleep test	Total sleep time	TST	Estimated total time of sleep
	Apnea/hypopnea index	AHI	Count of respiratory events per hour of sleep
	Improvement index	AHI < 50%	Number of participants with an AHI 50% reduction after the intervention
	Improvement index II	AHI < 5	Number of participants with a post-intervention AHI of 5 or less
	Flow limitation index	FLOW	Percentage of sleep time with an important flattening of the breathing waves
	Blood O2 saturation index	SpO2	Mean fraction of saturated hemoglobin and total hemoglobin (%)
		SpO2min	Minimal fraction of saturated hemoglobin and total hemoglobin (%)
	Snoring	SNRdb	Intensity of oropharyngeal reverberation (db)
		SNR%	Time spent snoring versus total sleep time (min)
	Body Position	BPsup	Time spent on supine position versus total sleep time (min)
	Bruxism index	BRUX	Bruxism episodes per hour of sleep (#/h)
		BRUXap	Bruxism episodes related to apneic events per hour of sleep (#/h)
Cone-beam tomography	Intersutural gap	IG	Average of 3 measurements along the palate on an axial slice