ขอบคุณค่ะ เพิ่งรู้ว่ามีหลายวิธีเลย A everlasting retainer is probably not “long-lasting” – somewhat, it is bonded (glued) in your teeth about the backside (the place your tongue touches them) and connects the front teeth so that they received’t shift. It may be set up or taken out by your orthodontist. The Vivera® https://jamesx852jnp3.idblogmaker.com/profile