New dentures may feel a little odd or loose for a few weeks until the muscles of the cheeks and tongue learn to keep them in place and you get comfortable inserting and removing them. Also, it is not unusual for minor irritation or soreness to occur and for saliva flow to increase when you first start wearing dentures, but these problems will diminish as the mouth adjusts.
Retention is the principle that describes how well the denture is prevented from moving vertically in the opposite direction of insertion. The better the topographical mimicry of the intaglio (interior) surface of the denture base to the surface of the underlying mucosa, the better the retention will be (in removable partial dentures, the clasps are a major provider of retention), as surface tension, suction and friction will aid in keeping the denture base from breaking intimate contact with the mucosal surface. It is important to note that the most critical element in the retentive design of a maxillary complete denture is a complete and total border seal (complete peripheral seal) in order to achieve 'suction'. The border seal is composed of the edges of the anterior and lateral aspects and the posterior palatal seal. The posterior palatal seal design is accomplished by covering the entire hard palate and extending not beyond the soft palate and ending 1–2 mm from the vibrating line.
Although dental implant success rates are high, there are cases in which the implant will fail. Most cases of implant failure can be prevented if the patient maintains his or her oral health and chooses a qualified implant dentist to plan and perform the procedure. Dental implants are more likely to fail in the maxilla (upper jaw) than in the mandible (lower jaw). Possible reasons for implant failure include:
The discount program provides access to the Aetna Dental Access® network. This network is administered by Aetna Life Insurance Company (ALIC). Neither ALIC nor any of its affiliates offers or administers the discount program. Neither ALIC nor any of its affiliates is an affiliate, agent, representative or employee of the discount program. Dental providers are independent contractors and not employees or agents of ALIC or its affiliates. ALIC does not provide dental care or treatment and is not responsible for outcomes.
There are three main ways to replace missing teeth. The first is with a removable false tooth (or teeth) - called a partial denture. The second is with a fixed bridge. A bridge is usually used when there are fewer teeth to replace, or when the missing teeth are only on one side of the mouth. The third way is by the use of dental ‘implants'. This is where an artificial root is placed into the bone of the jaw and a crown or bridge placed on top of this. See our leaflet ‘Tell me about: dental implants'.

An overdenture is a removable dental prosthesis that covers and rests on one or more remaining tooth roots. A removable partial denture is a dental prosthesis that replaces some teeth and is built around existing natural teeth. Both the overdenture and the removable partial denture may be connected to the remaining tooth roots or remaining natural teeth with anchors made of metal or plastic. These connections improve stability and the retention of both prostheses. 
Dentures Cost