Dental Assistants work on behalf of the patient as well as the dentist in helping to ensure a high level of professional excellence in oral health care delivery. In smaller practices, the assistant might work with the dentist as well as managing the business aspects of the practice such as scheduling, billing and purchasing. In larger practices, the duties may be more specialized. Registered dental assistants are qualified to take X-rays, or expose radiographs, as it is properly called. In most dental offices, the dental assistant monitors infection control procedures. The complexity and importance of this task is a real challenge for any professional, requiring constant updates to remain current with registrations.