Retention of different attachment systems in implant overdentures

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Using complete dentures is a challenge because of decrease of force and muscle coordination and difficulty in achieving an acceptable level of prosthesis retention and stability due to bone resorption. Initially, treatment with endosseous implants consisted of the placement of four to six implants in combination with a fixed prosthesis. It proved quite successful. Implant overdenture treatment was adopted later, and long-term clinical results were shown to be excellent as well.There is no evidence for one outstanding attachment system. The choice of systems should be orientated on the individual clinical situation and the individual needs of the patients. The attachment retained implant supported overdenture solves the problems inherited with conventional denture. In the present study, the retention of two ball attachment, four ball attachment and bar and clip attachment system was evaluated.