Misaligned Teeth: Causes, Types, and Treatment Options

Question 1

A patient with a high-angle facial profile and increased lower facial height is likely to have which type of skeletal malocclusion?

Accepted Answer

Hyperdivergent skeletal pattern

Answer

Hypodivergent skeletal pattern

Answer

Vertical skeletal pattern

Answer

Horizontal skeletal pattern

Question 2

Diagnosis of malocclusions typically involves:

Accepted Answer

A combination of the above

Answer

Clinical examination

Answer

Radiographic analysis

Answer

Cephalometric analysis

Question 3

Which type of malocclusion is primarily caused by a discrepancy in the size or position of the jaws?

Accepted Answer

Skeletal

Answer

Dental

Answer

Functional

Answer

Acquired

Question 4

Which classification system is most widely used globally to categorize malocclusions?

Accepted Answer

Angle's classification

Answer

Tweed's classification

Answer

British Society of Orthodontics classification

Answer

American Association of Orthodontists classification

Question 5

Which treatment option is typically used to correct severe skeletal malocclusions that cannot be treated with orthodontics alone?

Accepted Answer

Orthognathic surgery

Answer

Orthodontics

Answer

Myofunctional therapy

Answer

Removable appliances

Question 6

Which of the following is NOT a type of malocclusion classification based on skeletal features?

Accepted Answer

Dental

Answer

Class I

Answer

Class II

Answer

Class III

Question 7

Which of the following is a potential oral health consequence of untreated malocclusions?

Accepted Answer

Increased risk of tooth decay due to difficulty cleaning teeth

Answer

Improved appearance and self-esteem

Answer

Enhanced jaw function and chewing ability

Answer

Reduced risk of gum disease

Question 8

When obtaining informed consent for malocclusion treatment in children and adolescents, which ethical consideration is paramount?

Accepted Answer

Involving the child's parent or guardian in the consent process, explaining the treatment options and risks clearly.

Answer

Ensuring the child fully grasps the treatment options and risks, even if their parent or guardian does not.

Answer

Obtaining consent solely from the child's healthcare provider.

Answer

Withholding treatment if the child does not fully understand the consequences.

Question 9

In an Angle Class II malocclusion caused by mandibular retrognathism, which mandibular characteristic is present?

Accepted Answer

Distal position of the mandible

Answer

Protruding maxillary incisors

Question 10

Which statement best describes the relative roles of genetics and environment in causing malocclusions?

Accepted Answer

Genetics are the primary factor, but the environment can modify their effects and influence the severity of malocclusions.

Answer

Genetics are the main cause of malocclusions, with little influence from the environment.

Answer

Genetics and environment contribute equally to malocclusions.

Answer

The environment is the primary cause of malocclusions, with genetics playing a minor role.

Question 11

Which of these is NOT an environmental factor that can cause misaligned teeth?

Accepted Answer

Genetics

Answer

Thumb sucking

Answer

Pacifier use

Answer

Premature loss of primary teeth

Question 12

Which of the following statements accurately reflects the effectiveness of preventive measures in reducing malocclusions?

Accepted Answer

Preventive measures, such as early orthodontic intervention and myofunctional therapy, can effectively reduce the prevalence of certain types of malocclusions.

Answer

Early orthodontic intervention alone can effectively prevent all types of malocclusions.

Answer

Myofunctional therapy is effective in addressing skeletal malocclusions.

Question 13

Which type of malocclusion is characterized by a normal molar relationship but anteroposterior disharmony between the maxillary and mandibular incisors?

Accepted Answer

Class II malocclusion

Answer

Open bite malocclusion

Answer

Class I malocclusion

Answer

Class III malocclusion

Question 14

What is the primary cause of dental malocclusions?

Accepted Answer

Disproportionate tooth size and jaw size

Answer

Neuromuscular factors

Answer

Environmental factors

Answer

Genetic factors

Question 15

What is the primary goal of surgical-orthodontic treatment for severe malocclusions?

Accepted Answer

To correct skeletal and dental discrepancies

Answer

To enhance aesthetics

Answer

To restore function

Answer

To prevent future dental problems

Question 16

Which of the following is an advantage of early orthodontic consultation for malocclusions?

Accepted Answer

Early identification and prevention of potential problems

Answer

Faster treatment time

Answer

Lower treatment costs

Question 17

What is the primary indication for extractions in orthodontic treatment for malocclusions?

Accepted Answer

Severe crowding or disproportionate tooth-jaw size

Answer

Excessive spacing

Answer

Facial asymmetry

Answer

Impacted teeth

Question 18

What is the role of environmental factors in the development of malocclusions?

Accepted Answer

To influence habits and behaviors that can affect jaw and tooth development

Answer

To predict the timing of tooth eruption

Answer

To determine the presence or absence of caries

Question 19

Which of the following is an example of a skeletal malocclusion?

Accepted Answer

Retrognathic mandible

Answer

Open bite

Answer

Overbite

Answer

Deep bite

Question 20

What is the importance of regular dental checkups in the prevention of malocclusions?

Accepted Answer

Early detection and timely intervention

Answer

To improve self-esteem

Answer

To save money on future treatment

Answer

To reduce treatment time

Question 21

Which of the following is the defining characteristic of a skeletal Class II malocclusion Division 1?

Accepted Answer

Retruded mandible and increased overjet

Answer

Normal jaw relationship and increased overbite

Answer

Protrusive mandible and reduced overbite

Answer

None of the above

Question 22

The etiology of malocclusion is considered to be:

Accepted Answer

Multifactorial, including genetics, environmental factors, and habits

Answer

Environmental factors only

Answer

Habits only

Answer

Genetics only

Question 23

Which treatment option for malocclusion involves the use of braces or aligners to gradually move teeth into their correct positions?

Accepted Answer

Orthodontic treatment

Answer

Restorative dentistry

Answer

Surgery

Answer

Extraction therapy

Question 24

Which of the following dental malocclusions is characterized by a posterior crossbite where the lower teeth overlap the upper teeth when biting?

Accepted Answer

Class III

Answer

Class IV

Answer

Class II

Answer

Class I