In prosthodontic treatment plan, decisions must be made regarding oral tissue rehabilitation and other necessary pre-prosthetic measures. The rehabilitation prostheses are very useful devices in the field of prosthodontics. It is essential that the mouth should be in an optimal state of health prior to commencing prosthetic treatment and failure to achieve this may produce an unsatisfactory treatment result. Depending on a variety of situations, the dentist may find it necessary to modify the patient\'s existing dentures or, occasionally, to construct a special appliance. This article deals with several preliminary (non-definitive) treatment options available along with a brief account of their rationale.