Dental equipment includes the installed permanent equipment needed for use by dentists, oral surgeons, and orthodontists.  This equipment includes, but is not limited to, dental chairs, x-ray machines, x-ray viewers, and specialized lighting.  Most of this equipment has specific engineering and architectural requirements that should be considered when designing and engineering a dental environment.  New technology is being developed constantly to improve the quality of patient care.  Designing environments that can grow and change with technology is essential.