The removable partial denture occupies a certain volume, which will affect the pronunciation and make the speech change. After wearing it, even if it is an incisor, a removable partial denture with an abutment will change the pronunciation immediately and make the speech unclear. After a period of adaptation, it is possible to speak clearly with it on, but it is still difficult to speak clearly after taking it out. It is difficult for patients to adapt at first. In addition, with the large size of the denture, the patient will feel more saliva and feel the abnormality between the denture and the dental bed. After eating, food residues and debris will remain and the patient feels stuffy and painful. Sometimes the retention is not good, there may be deformation in the model or the wire is not bent well, the retention force is not very good, the doctor may have to take a clamp to put more force to make it fit to the abutment teeth. In addition, the doctor needs to instruct the patient on how to take the appliance, for example, for a mandibular tooth, hook that hook firmly and use your thumb to push it upwards. In the case of maxillary teeth, the hook is usually pulled down with the index finger. If the fixation is too tight, it may be difficult for the patient to remove it, so it must be adjusted just right.