Missing incisors can be treated with a removable denture. Prosthetic dentures are generally divided into invisible, plastic and cast dentures. Invisible dentures can be used directly by patients with good abutment teeth on both sides. Plastic and cast dentures are worn with a retainer. For these two types of dentures, the retainer should be placed as far back as possible, in a more concealed position. Therefore, patients with missing incisors can be restored with a removable denture.