Abstract: The description of diagnosis and treatment records of the dental practice generally stays in insurance claim paperwork and tends to become scarce information as the medical record. It is thought that it is one of the factors to obstruct the improvement of the dental science in the future. Because dentist fingers has been contaminated by the patient's saliva and blood, it is difficult to type in keyboard while treating. As for this situation, a voice input method makes hands free reecording. The microphone with a wireless bone conduction, and software recognizes without long time learning, required in clinical dentist;= hopefully, the clinical conversation between dentist and the patient is converted into clinical record automatically. As for both software and hardware, further development will be needed. Because such demand exists widely, it can be expected to appear as a general product. However, a dental word and the description are collected to improve the conversion efficiency of the voice input, accumulation is needed, and this cannot be expected of another field. In this study, it was assumed that the dental vocabulary was registered in voice input software AMI VOICE(Advanced Media, Inc. Tokyo), and it aimed at the practical use of the voice input software in the dental practice. As for sentences of the textbook and the magazine, etc. ,the content of the description is different from the content of the clinical record. Moreover, there is no generality because the case report done at the academic society etc. As for the example of doing a detailed description by a general example, the clinical trainee doctor's case report corresponds to it. A dental, experimental version of AMI VOICE that enhances the vocabulary based on this is operated in the workshop, and the practicality is verified.