RESUMO
44 obstructive sleepapnea-hypopnea syndrome ( OSAHS) patients were Supplemented by an controlla-ble appliance in their intervene treatments. The data of polysomnography ( PSG) , Epworth sleepiness scale( ESS) and quality of life-Quebec sleep questionnaire( QSQ) before and 3 treatment period months after oral appliance were recorded. Correlations between subjective and objective measure before treated with OA and subsequently investi-gate treatment mechanism of oral appliance( OA) . Correlations indexes between before and after 3 treatment with an controllable appliance, and evaluation had statistically significance ( P <0. 05 ) . Absolute correlations between PSG indexes and subjective measures before oral appliance ranged from 0. 321 ~0. 433 , and 3 treatment period months after oral appliance ranged from 0. 306~0. 437 . Both PSG indexes and quality of life improved significantly after oral appliance(P<0. 05).