Patient Position
Correct patient position provides:
Good visibility – Easy access – Comfort – Safety For treatment of the upper jaw (maxilla):
Patient almost fully reclined
Occlusal plane parallel to floor
Dentist usually works around 12 o’clock position
For treatment of the lower jaw (mandible):
Patient slightly more upright/reclined less
Head slightly tilted forward
Headrest should:
Support head and neck
Allow clear view of operating field
Ideal working distance:
Dentist’s eyes to patient’s mouth = 30–50 cm
Dentist Working Posture
Main goal:
Prevent fatigue – Prevent musculoskeletal disorders Improve efficiency
Correct posture:
Back straight with natural spinal curves
Head inclined approximately 25°
Shoulders relaxed
Elbows close to body
Forearms nearly horizontal
Feet flat on floor
Weight evenly distributed
Dentist should:
Avoid twisting trunk
Avoid excessive neck bending
Avoid unnecessary reaching
Move chair/light instead of bending body
Ideal distance from operating field:
Approximately 30 cm
Four-Handed & Six-Handed Dentistry
Four-Handed Dentistry
- Dentist + 1 assistant
- Advantages:
- Saves movement
- Saves time
- Saves energy
- Improves instrument transfer
- Increases efficiency
Six-Handed Dentistry
- Dentist + 2 assistants
- Second assistant may:
- Arrange instruments
- Coordinate procedures
- Monitor patient under anaesthesia
- Assist with documentation
- Prepare materials