: a device or composition that holds something in position: such as a : the Component of a dental substitute (like a bridge) by which it's manufactured quick to adjacent normal enamel b : a dental appliance utilized to maintain enamel in proper position In particular subsequent orthodontic procedure วิธีถอด-ใส่รีเทนเนอร์แบบเป็นขั้นตอน https://edmundh296twy7.national-wiki.com/user