Article
A removable prosthesis relies greatly on active retention, through the use of clasping elements into undercuts and the utilization of guide planes. Retention is defined as the resistance of displacement along the path of insertion. Various factors influence a patient's satisfaction with a removable prosthesis, which include technical quality of the prosthesis, patient's previous denture-wearing experience and patient-related factors such as the denture-bearing area.1
In challenging patients with an unfavourable pattern of tooth loss, medically compromised or oncology patients with altered anatomy, alternative techniques may be required to retain a prosthesis since conventional methods of retention may be inadequate. The responsible clinician is often presented with a dilemma when lone-standing teeth are present. The decision whether to extract or retain any lone-standing teeth in a patient who requires rehabilitation with a removable partial denture needs to be carefully assessed. Various factors ought to be considered during treatment planning:
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