In restorative dentistry, precision attachments are the functional mechanical parts of the removable partial denture made of plastic, metal or a combination of both. They consist of two parts referred as the 'male' part that is fixed to a crown inside the patient's mouth and a 'female' part which holds the partial denture. In restorative dentistry, precision attachments are the functional mechanical parts of the removable partial denture made of plastic, metal or a combination of both. They consist of two parts referred as the 'male' part that is fixed to a crown inside the patient's mouth and a 'female' part which holds the partial denture.