Question 1

Which of the following is used to close space between teeth?

Accepted Answer

A) Elastomeric ligatures 
B) Elastic chains 
C) Comfort tubing 
D) Wire ties 
A) Elastomeric ligatures 
B) Elastic chains 
C) Comfort tubing 
D) Wire ties

Question 2

What does a hook do?

Accepted Answer

A) It attaches a bracket to a tooth. 
B) It holds interarch elastics. 
C) It stabilizes the ends of a facebow. 
D) It holds the arch wire in place. 
A) It attaches a bracket to a tooth. 
B) It holds interarch elastics. 
C) It stabilizes the ends of a facebow. 
D) It holds the arch wire in place.

Question 3

Why is glass ionomer cement the most commonly used cement for banding orthodontic bands?

Accepted Answer

A) It contains fluoride that aids in preventing decay under the bands. 
B) It has adequate strength to aid in retention with enamel. 
C) It is capable of being bonded to the tooth surface. 
D) Both a and b are correct. 
A) It contains fluoride that aids in preventing decay under the bands. 
B) It has adequate strength to aid in retention with enamel. 
C) It is capable of being bonded to the tooth surface. 
D) Both a and b are correct.

Question 4

Which of the following can occur if a patient practices poor oral hygiene during orthodontic treatment?

Accepted Answer

A) Hypocalcification 
B) Rampant decay.. 
C) Rampant decay 
D) All of the above 
A) Hypocalcification 
B) Rampant decay.. 
C) Rampant decay 
D) All of the above

Question 5

Which statement is incorrect regarding the cut ligature pigtail?

Accepted Answer

A) Tuck toward the gingival. 
B) Tuck toward the occlusal. 
C) Run a finger over then to check for comfort. 
D) Tuck them in the interproximal space. 
A) Tuck toward the gingival. 
B) Tuck toward the occlusal. 
C) Run a finger over then to check for comfort. 
D) Tuck them in the interproximal space.

Question 6

Elastic separators can be left in the mouth for ____ days,and steel can be left in the mouth for _____ days.

Accepted Answer

A) 7; 7 
B) 14; 5 
C) 5; 14 
D) 14; 14 
A) 7; 7 
B) 14; 5 
C) 5; 14 
D) 14; 14

Question 7

What information is needed for the diagnosis and treatment planning of an orthodontic case?

Accepted Answer

A) Medical and dental histories 
B) Photographs and radiographs 
C) Diagnostic models 
D) All of the above 
A) Medical and dental histories 
B) Photographs and radiographs 
C) Diagnostic models 
D) All of the above

Question 8

Orthodontic fixed appliances are also known as what?

Accepted Answer

A) Braces 
B) Separators 
C) Hawley retainers 
D) Clear "aligners" 
A) Braces 
B) Separators 
C) Hawley retainers 
D) Clear "aligners"

Question 9

Which non-nutritive habit may be a result in narrowing of the maxilla?

Accepted Answer

A) Bruxism 
B) Tongue thrusting 
C) Mouth breathing 
D) All of the above 
A) Bruxism 
B) Tongue thrusting 
C) Mouth breathing 
D) All of the above

Question 10

What is an advantage of using the patient's model to select bands?

Accepted Answer

A) The patient does not need to be present. 
B) It is more accurate. 
C) Neither are advantages. 
D) Both are advantages. 
A) The patient does not need to be present. 
B) It is more accurate. 
C) Neither are advantages. 
D) Both are advantages.

Question 11

Which type of arch wire would not be used to position the crown and root of the teeth in final stages of treatment?

Accepted Answer

A) Round 
B) Square 
C) Rectangular 
D) All of the above 
A) Round 
B) Square 
C) Rectangular 
D) All of the above

Question 12

What attachment is either welded to bands or attached to a backing pad that is bonded directly to the teeth?

Accepted Answer

A) Bracket 
B) Separator 
C) Retainer 
D) Coil spring 
A) Bracket 
B) Separator 
C) Retainer 
D) Coil spring

Question 13

After preparing the tooth for bonding brackets,the sealant is placed on the ____ and the bonding material on the _____.

Accepted Answer

A) bracket; bracket 
B) tooth; tooth 
C) bracket; tooth 
D) tooth; bracket 
A) bracket; bracket 
B) tooth; tooth 
C) bracket; tooth 
D) tooth; bracket

Question 14

What is class II occlusion?

Accepted Answer

A) It is normal occlusion. 
B) It is mesioclusion. 
C) It occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the mandibular second premolar and the mesial cusp of the mandibular first molar 
D) It occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the distal cusp of the mandibular first permanent molar and the mesial cusp of the mandibular second permanent molar 
A) It is normal occlusion. 
B) It is mesioclusion. 
C) It occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the mandibular second premolar and the mesial cusp of the mandibular first molar 
D) It occurs when the mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the distal cusp of the mandibular first permanent molar and the mesial cusp of the mandibular second permanent molar

Question 15

What holds dental arch wires in place?

Accepted Answer

A) Ligature ties 
B) Dental cement 
C) Elastomeric ties 
D) Both a and c 
A) Ligature ties 
B) Dental cement 
C) Elastomeric ties 
D) Both a and c

Question 16

The orthodontic problems of most people result from interactions of which of the following?

Accepted Answer

A) Developmental influences 
B) Genetic influences 
C) Environmental influences 
D) All of the above 
A) Developmental influences 
B) Genetic influences 
C) Environmental influences 
D) All of the above

Exam 60: Orthodontics

Which of the following is used to close space between teeth?

What does a hook do?

Why is glass ionomer cement the most commonly used cement for banding orthodontic bands?

Which of the following can occur if a patient practices poor oral hygiene during orthodontic treatment?

Which statement is incorrect regarding the cut ligature pigtail?

Elastic separators can be left in the mouth for ____ days,and steel can be left in the mouth for _____ days.

What information is needed for the diagnosis and treatment planning of an orthodontic case?

Orthodontic fixed appliances are also known as what?

Which non-nutritive habit may be a result in narrowing of the maxilla?

What is an advantage of using the patient's model to select bands?

Which type of arch wire would not be used to position the crown and root of the teeth in final stages of treatment?

What attachment is either welded to bands or attached to a backing pad that is bonded directly to the teeth?

After preparing the tooth for bonding brackets,the sealant is placed on the ____ and the bonding material on the _____.

What is class II occlusion?

What holds dental arch wires in place?

The orthodontic problems of most people result from interactions of which of the following?

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

Dental Handpieces and Accessories

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

Communication in the Dental Office

Business Operating Systems

Financial Management in the Dental Office

Marketing Your Skills

Elastic separators can be left in the mouth for days,and steel can be left in the mouth for _ days.

After preparing the tooth for bonding brackets,the sealant is placed on the and the bonding material on the _.