محاضره 9 د اشرقت .pptx operative dentistry

Dentistry

1. Patient and Operator Position

2. Operator and the patient should maintain proper posture so as to have less muscular strain, less fatigue and more efficiency : (A) Correct posture; (B) Incorrect posture

3. Upright Position This is the initial position of chair from which further adjustments are made.

4. Almost Supine In this, chair position is such that: • Patient’s head, knees and feet are approximately at same level • Patient is almost in a lying position as the name indicates • Patient’s head should not be lower than feet except in case of syncopal attack.

5. Reclined 45 Degree • In this position, chair is reclined at 45° • Mandibular occlusal surfaces are almost at 45° to the floor.

6. Right Front Position (7 o’clock) • It helps in examination of the patient • Working areas include – Mandibular anterior – Mandibular posterior teeth (Right side) – Maxillary anterior teeth • To increase the ease and visibility, the patient’s head may be turned towards the operator .

7. Right Position (9 o’clock) • In this position, dentist sits exactly right to the patient • Working areas include – Facial surfaces of maxillary right posterior teeth – Facial surfaces of mandibular right posterior teeth – Occlusal surfaces of mandibular right posterior teeth .

8. Right Rear Position (11 o’clock) • In this position, dentist sits behind and slightly to the right of the patient and the left arm is positioned around patient’s head • This is preferred position for most of dental procedures • Most areas of mouth are accessible from this position either using direct or indirect vision • Working areas include – Palatal and incisal (occlusal) surfaces of maxillary teeth – Mandibular teeth (direct vision).

9. Direct Rear Position (12 o’clock) • Dentist sits directly behind the patient and looks down over the patient’s head during procedure • Working areas are lingual surfaces of mandibular teeth • This position has limited application.