The patient chair (Figure 1a and b) should:
- Have a thin narrow back to facilitate access to the patient’s oral cavity by the operating team.
- Have a concave seat and lower lumbar support for the patient.
- Be void of wide wings that prohibit the assistant and operator from being seated close to the patient.
- Have an automatic pre-set positioner that places the patient in the supine position.
- Be free of protrusive devices on the back.
- Provide for mobile neck and head support for the patient.
- Be easily positioned for right or left handed operators.
- Be easy to clean and disinfect and be free of fabric upholstery.