A kind of dental orthotic device is arranged what cavity interior, includes: murices filament plate, bone screw and positioning device. The murices filament plate is equipped with the positioning region of ontology and position what ontology； Bone screw has the body portion of head and position what head side,And body portion wears the positioning region of what ontology,And it is implanted into what cavity interior； The positioning device is installed between the above-mentioned ontology of what and head,And the second connector of the first connector and position what head with position what ontology,Wherein,When the body portion of bone screw is implanted into what cavity interior,Ontology and head are connected with each other through positioning device,Thereby,This creation dental orthotic device is implanted into the positioning device between cavity interior and position what ontology and head through body portion,Murices filament plate position what cavity interior is set to be not easy rotation displacement,And then reduce the time of straightening of teeth.一種牙科矯正裝置，設置於口腔內部，包含：骨螺絲板、骨螺絲以及定位裝置。該骨螺絲板設有本體以及位於本體的定位部；骨螺絲具有頭部以及位於頭部一側的身部，而身部穿設於本體的定位部，並植入於口腔內部；該定位裝置裝設於上述本體與頭部之間，並具有位於本體的第一連接件以及位於頭部的第二連接件，其中，當骨螺絲的身部植入於口腔內部時，本體與頭部透過定位裝置相互連接，藉此，本創作牙科矯正裝置透過身部植入口腔內部以及位於本體與頭部之間的定位裝置，使骨螺絲板位於口腔內部能不易轉動位移，進而降低矯正牙齒的時間。
