Dental Test 2 — Questions and Answers
Question 1: What is the name for the misalignment of dental arches?
- Gingiva
- Diastama
- Maxilliary
- Malocclusion (Correct answer)
Correct answer: Malocclusion
Malocclusion is the correct term for any deviation from a normal occlusion, meaning an improper alignment of the teeth and the way the upper and lower dental arches fit together. This condition can affect chewing, speech, and overall oral health. Options like gingiva (gums) or diastema (gap between teeth) describe specific oral features, not the general misalignment of arches.
Question 2: Which of these is not a part of the mouth?
- Uvula
- Pharynx (Correct answer)
- Tongue
Correct answer: Pharynx
The pharynx, commonly known as the throat, is a part of both the digestive and respiratory systems located behind the mouth and nasal cavity. While it connects to the mouth, it is anatomically considered a separate structure. The uvula and tongue, however, are integral components found directly within the oral cavity.
Question 3: Who among these pioneered the field?
- Abraham Jacobi
- Edward Angle (Correct answer)
- Bill Ferguson
- Mark Zuckerberg
Correct answer: Edward Angle
Edward Angle is widely recognized as the 'Father of Modern Orthodontics' due to his pioneering work in the field. He developed the first classification system for malocclusion, which is still used today, and designed many of the early orthodontic appliances. His contributions laid the scientific foundation for the specialty of orthodontics.
Question 4: How many major components does a bracket have?
- 8
- 6
- 4 (Correct answer)
- 2
Correct answer: 4
A typical orthodontic bracket generally consists of four major components: the base, which adheres to the tooth; the archwire slot, through which the archwire passes; the tie-wings, used to secure the archwire; and often a hook, for attaching elastics. These parts work together to transmit forces for tooth movement.
Question 5: Which of these bracket components is spot welded to the orthodontic bands?
- Steel tie
- Elastic
- Bracket hook
- Bracket base (Correct answer)
Correct answer: Bracket base
The bracket base is the component of an orthodontic bracket that is designed to be securely attached to the tooth surface or, in some cases, spot welded to an orthodontic band. When bands are used, typically on molars or premolars, the bracket base provides the strong, stable connection necessary for effective orthodontic force transmission.
Question 6: Which of these is done to the premolar?
- Elastic power chain
- Springs
- Orthodontic bands (Correct answer)
- Denture
Correct answer: Orthodontic bands
Orthodontic bands are metal rings that are cemented around teeth, most commonly molars and premolars, to provide a strong anchor for orthodontic appliances. While brackets can be bonded directly, bands offer superior strength and retention, especially when significant forces are applied or when other attachments like headgear tubes are needed. Dentures are prosthetic replacements, not orthodontic components for individual teeth.
Question 7: Which of these is carried out in order to stop orthodontic movement?
- Denture
- Alveolar decortication
- Adjunctive therapy (Correct answer)
- Arch wire
Correct answer: Adjunctive therapy
Adjunctive therapy in orthodontics refers to additional treatments or procedures performed to support or enhance the primary orthodontic treatment, including stopping movement and maintaining results. This often involves the use of retainers, which are crucial for stabilizing teeth in their new positions after active orthodontic movement has ceased, preventing relapse. Alveolar decortication, conversely, is a surgical procedure to accelerate tooth movement.
Dental Test 2
What is the name for the misalignment of dental arches?