The difference would be that the retainer content is thicker and meant to final For many years, though aligners are intended to past for just a several weeks. Their primary purpose is to attenuate the purely natural inclination of teeth to revert for their unique positions eventually. รู้จัก “หมอโอ” คุณหมอสูตินรีแพทย์ https://friedrichl418ybg9.win-blog.com/profile