Amalgam Restorations and patient/operator positioning

Which of the following is an aim of proper patient and operator positioning?

• It should support back of patient
• Control switches should be far away
• Headrest should be in a position to reduce strain on patient’s chin muscles
• Working area should be kept hidden from patient’s view

Which of the following positions is suitable for working on labial surface of mandibular anterior teeth?

• 7 o’ clock
• 9 o’ clock
• 11 o’ clock
• 12 o’ clock

Which of the following positions is suitable for working on occlusal surfaces of mandibular right posterior teeth?

• Right front position
• Right position
• Right rear position
• Direct rear position

Which of the following positions is referred to as universal operating system?

• Right front position
• Right position
• Right rear position
• Direct rear position

What is 11 o’clock position also known as?

• Right front position
• Right position
• Right rear position
• Direct rear position

Which of the following positions is most convenient for working on palatal surface of maxillary anterior teeth?

• Right front position
• Right position
• Right rear position
• Direct rear position

Which of the following positions is only suitable for working on lingual surfaces of mandibular anterior teeth?

• Right front position
• Right position
• Right rear position
• Direct rear position

Which of the following patient position is mostly used in operative dentistry?

• Upright
• Reclined 45 degrees
• Almost supine
• Supine

What should be the level of the operator’s elbow with respect to the level of the teeth being treated?

• At the same level
• Hands should be above level of teeth
• Hands should be below level of teeth
• Hands should be angled 45 degrees downward towards the teeth

Which of the following positions is used to operate on facial surfaces of right maxillary posterior teeth?

• Right front position
• Right position
• Right rear position
• Direct rear position