Teeth are lost because of caries, periodontal disease or injury or have to be removed if the treatment fails. Missing teeth can cause cosmetic, phonetic and occlusal problems and may have shifts of the remaining teeth result. Types of dental aids belongs to dentures fixed bridges removable partial denture removable full dentures Osseo-integrated implants A bridge (fixed partial dentures) is made “false” teeth, which are joined by casting or brazing with each other and at both ends with crowns on natural teeth (abutment teeth) cemented that carry the entire chewing load. A bridge is not taken out. It is smaller than a removable partial denture; However, it can be made to replace many teeth in a dental arch one or more bridges. A removable partial denture, typically a device with clamps which engage in abutment teeth can be removed for cleaning and overnight. A portion of the occlusal load can be supported by the soft tissue of the prosthesis, frequently on both sides of the jaw. This type of prosthesis is often used when many teeth need to be replaced, and no bridges or implants can be made for technical or financial reasons. For full dentures is removable dentures, which is used in fully edentulous patients. They help a patient with chewing and improve its language and appearance, but do not offer the efficiency, or the feeling of natural dentition. When teeth are missing, the mandible atrophies slowly, resulting in ill-fitting dentures, which then revised (lined) or must be replaced. Alternatives are oral surgical procedures to increase the alveolar or dental implants to replace missing teeth. An implant is typically a titanium cylinders or screw that replaces the tooth root. One or more implants are placed in the alveolar bone where they ankylosieren. After two to six months, artificial teeth are attached to the implants. Implants can not take out the denture, they are based, but may have. The risk of infection at the passages of the implants requires extremely conscientious oral hygiene. In general, dental and surgical procedures each removable dentures is removed prior to general anesthesia (anesthesia), neck surgery or convulsive shock therapy to avoid breakage or aspiration. The prostheses are stored in water to prevent deformation. However, some anesthetists believe that leaving the dental prosthesis facilitates the passage of the intubation tube in his mouth, holding his face in better shape so that the anesthesia mask sits better, injuries to the gingiva of a toothless jaw by opposing natural teeth prevented and does not affect the laryngoscopy , Prostheses problems Occasionally, the oral mucosa inflamed under a prosthesis (prostheses printing position, inflammatory papillary hyperplasia). Possible factors that aggravate these usually painless condition are Candida infections, poor fit of the prosthesis, poor oral hygiene, excessive mobility of the prosthesis and, most frequently, wearing the prosthesis 24 h / day. The oral mucosa appears red and velvety. Overgrowth of Candida can be displayed by adhering cotton-like coverings or more frequently by erosive lesions of the mucosa. The presence of Candida can be microscopically confirmed by the typical branched hyphae. Without Candida, an inflammatory papillary hyperplasia is unlikely. A new, properly prepared prosthesis almost always improves the situation. Other treatment options are improving oral and denture hygiene, relining the existing denture, remove the prosthesis for prolonged periods, antifungal therapy (Nystatin rinses the oral cavity and insert the denture overnight in Nystatin solution). Occasionally, the insertion of the prosthesis in a commercial denture cleaner is helpful. Other possibilities include the application of Nystatin suspension to the tissue side of the prosthesis and taking clotrimazole lozenges 10 mg 5 times daily. Ketoconazole (imidazole derivative) 200 mg p.o. 1 times a day may be necessary. When the inflammation persists, a biopsy is indicated, and systemic disease should be excluded.