Question 1

Which is the most varied category of rotary instruments?

Accepted Answer

A) Diamond rotary instruments 
B) Laboratory burs 
C) Carbide burs 
D) Abrasive rotary instruments 
A) Diamond rotary instruments 
B) Laboratory burs 
C) Carbide burs 
D) Abrasive rotary instruments

Question 2

Which of the following is not a use for a low-speed handpiece?

Accepted Answer

A) Removal of old or faulty restorations 
B) Finishing and polishing restorations 
C) Root canal treatment 
D) Coronal polishing and removal of stains 
A) Removal of old or faulty restorations 
B) Finishing and polishing restorations 
C) Root canal treatment 
D) Coronal polishing and removal of stains

Question 3

A finishing bur has _____ on the working end than a restorative bur because it is used for final stage polishing of a restoration.

Accepted Answer

A) fewer blades 
B) more blades 
C) the same number of blades 
A) fewer blades 
B) more blades 
C) the same number of blades

Question 4

Which type of bur helps to provide angles to the walls of the cavity preparation with retention grooves?

Accepted Answer

A) 699 
B) 4 
C) 56 
D) 330 
A) 699 
B) 4 
C) 56 
D) 330

Question 5

When cleaning a dental handpiece,it is important to:

Accepted Answer

A) always lubricate the handpiece before sterilization. 
B) always lubricate the handpiece after sterilization. 
C) carefully follow the manufacturer's instructions. 
D) never use a lubricant on the handpiece. 
A) always lubricate the handpiece before sterilization. 
B) always lubricate the handpiece after sterilization. 
C) carefully follow the manufacturer's instructions. 
D) never use a lubricant on the handpiece.

Question 6

What design of bur is a 557 and what is its use?

Accepted Answer

A) Round bur: gains entrance into tooth structure 
B) Straight fissure cross-cut: forms internal walls of the preparation 
C) Inverted cone: forms retention grooves 
D) Pear: extends cavity preparation 
A) Round bur: gains entrance into tooth structure 
B) Straight fissure cross-cut: forms internal walls of the preparation 
C) Inverted cone: forms retention grooves 
D) Pear: extends cavity preparation

Question 7

Because abrasive discs and wheels are supplied separately and not attached to a shank,a _____ is used to attach these abrasives to the dental handpiece.

Accepted Answer

A) console 
B) mandrel 
C) shank 
D) torque 
A) console 
B) mandrel 
C) shank 
D) torque

Question 8

The handpiece that has the greatest torque (twisting or turning force) is the _____ handpiece.

Accepted Answer

A) laboratory 
B) air abrasion 
C) ultrasonic 
D) high-speed 
A) laboratory 
B) air abrasion 
C) ultrasonic 
D) high-speed

Question 9

What is the most commonly used bur in the laboratory?

Accepted Answer

A) Carborundum 
B) Sandpaper disks 
C) Acrylic bur 
D) Cuttlebone 
A) Carborundum 
B) Sandpaper disks 
C) Acrylic bur 
D) Cuttlebone

Question 10

Which of the following statements is true regarding the different types of shanks?

Accepted Answer

A) The long, straight shank is used in the straight-line attachment, which fits on the high-speed handpiece. 
B) The long, straight shank is used in the angle attachment, which fits on the low-speed handpiece. 
C) The latch-type shank has a small groove at the end that mechanically locks into the contra-angle attachment, which fits on the high-speed handpiece. 
D) The friction-grip shank is short and smooth and has no retention grooves in the end. The shank is held in the high-speed handpiece by the creation of friction that grips the entire shank. 
A) The long, straight shank is used in the straight-line attachment, which fits on the high-speed handpiece. 
B) The long, straight shank is used in the angle attachment, which fits on the low-speed handpiece. 
C) The latch-type shank has a small groove at the end that mechanically locks into the contra-angle attachment, which fits on the high-speed handpiece. 
D) The friction-grip shank is short and smooth and has no retention grooves in the end. The shank is held in the high-speed handpiece by the creation of friction that grips the entire shank.

Question 11

Which type of rotary instrument shank is placed into a high-speed handpiece?

Accepted Answer

A) Straight 
B) Friction-grip 
C) Latch-type 
D) Curved 
A) Straight 
B) Friction-grip 
C) Latch-type 
D) Curved

Question 12

The two most common types of dental handpieces are _____ handpieces.

Accepted Answer

A) high-speed and laser 
B) ultrasonic and laser 
C) low-speed and high-speed 
D) high-speed and ultrasonic 
A) high-speed and laser 
B) ultrasonic and laser 
C) low-speed and high-speed 
D) high-speed and ultrasonic

Question 13

Which type of bur is used to remove decay during tooth preparation?

Accepted Answer

A) Round 
B) Straight fissure plain cut 
C) Straight fissure cross-cut 
D) Tapered fissure plain cut 
A) Round 
B) Straight fissure plain cut 
C) Straight fissure cross-cut 
D) Tapered fissure plain cut

Question 14

A high-speed handpiece can reach how many rpm (rotations per minute)?

Accepted Answer

A) 250,000 rpm 
B) 100,000 rpm 
C) 450,000 rpm 
D) 300,000 rpm 
A) 250,000 rpm 
B) 100,000 rpm 
C) 450,000 rpm 
D) 300,000 rpm

Question 15

The high-speed handpiece uses _____ burs.

Accepted Answer

A) friction-grip 
B) straight 
C) latch 
D) laboratory 
A) friction-grip 
B) straight 
C) latch 
D) laboratory

Question 16

What type of restoration material would require finishing burs,as well as sandpaper disks and cuttlebone point?

Accepted Answer

A) Gold 
B) Stainless steel 
C) Amalgam 
D) Esthetic materials 
A) Gold 
B) Stainless steel 
C) Amalgam 
D) Esthetic materials

Question 17

The low-speed handpiece operates from _____ rotations per minute (rpm).

Accepted Answer

A) 100 to 500 
B) 1000 to 5000 
C) 10,000 to 30,000 
D) 10,000 to 100,000 
A) 100 to 500 
B) 1000 to 5000 
C) 10,000 to 30,000 
D) 10,000 to 100,000

Question 18

The term _____ is applied to all rotary instruments that have a sharp cutting head.

Accepted Answer

A) wheel 
B) diamond 
C) bur 
D) finishing stone 
A) wheel 
B) diamond 
C) bur 
D) finishing stone

Question 19

The _____ handpiece can operate both forward and backward and can be used with a variety of attachments.

Accepted Answer

A) high-speed 
B) laboratory 
C) low-speed 
D) laser 
A) high-speed 
B) laboratory 
C) low-speed 
D) laser

Question 20

Which of the following is not correct about diamond rotary instruments?

Accepted Answer

A) They have a metal base with flecks of industrial diamonds. 
B) They are inexpensive. 
C) They increase cutting ability. 
D) They shorten preparation time and increase productivity. 
A) They have a metal base with flecks of industrial diamonds. 
B) They are inexpensive. 
C) They increase cutting ability. 
D) They shorten preparation time and increase productivity.

Exam 35: Dental Handpieces and Accessories

Which is the most varied category of rotary instruments?

Which of the following is not a use for a low-speed handpiece?

A finishing bur has _____ on the working end than a restorative bur because it is used for final stage polishing of a restoration.

Which type of bur helps to provide angles to the walls of the cavity preparation with retention grooves?

When cleaning a dental handpiece,it is important to:

What design of bur is a 557 and what is its use?

Because abrasive discs and wheels are supplied separately and not attached to a shank,a _____ is used to attach these abrasives to the dental handpiece.

The handpiece that has the greatest torque (twisting or turning force) is the _____ handpiece.

What is the most commonly used bur in the laboratory?

Which of the following statements is true regarding the different types of shanks?

Which type of rotary instrument shank is placed into a high-speed handpiece?

The two most common types of dental handpieces are _____ handpieces.

Which type of bur is used to remove decay during tooth preparation?

A high-speed handpiece can reach how many rpm (rotations per minute)?

The high-speed handpiece uses _____ burs.

What type of restoration material would require finishing burs,as well as sandpaper disks and cuttlebone point?

The low-speed handpiece operates from _____ rotations per minute (rpm).

The term _____ is applied to all rotary instruments that have a sharp cutting head.

The _____ handpiece can operate both forward and backward and can be used with a variety of attachments.

Which of the following is not correct about diamond rotary instruments?

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Oral Embryology and Histology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Dental Caries

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Microbiology

Disease Transmission and Infection Prevention

Principles and Techniques of Disinfection

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Provisional Coverage

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics