Dental Orthodontics — MCQ ও উত্তর

ডেন্টাল ভর্তি · । এই অধ্যায়ে মোট 128টি প্রশ্ন আছে। নিচে প্রথম 10টি প্রশ্ন ও সঠিক উত্তর দেওয়া হলো।

এই অধ্যায়ে সব প্রশ্নে অনুশীলন করুন

1. What is the principal aim of orthodontic intervention in clinical dentistry?

   1. Functional efficiency
   2. Aesthetic improvement
   3. Speech correction
   4. Pain management

   সঠিক উত্তর: Functional efficiency

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A The principal aim of orthodontic intervention is to achieve functional efficiency by correcting malocclusions and aligning teeth properly. Proper alignment ensures optimal mastication, facilitates oral hygiene, and prevents abnormal wear and temporomandibular joint disorders. While aesthetics and speech may improve secondary to treatment, the primary clinical goal is to restore occlusal harmony and functional balance. This focus on function promotes long-term oral health and patient well-being.Reference: Graber’s Orthodontics, 7th Edition.

2. Which of the following is NOT an intended objective of orthodontic treatment?

   1. Enhancing mastication
   2. Improving facial esthetics
   3. Decrease the durability of dentition
   4. Correcting malocclusion

   সঠিক উত্তর: Decrease the durability of dentition

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option C

3. Which of the following is NOT included in the scope of orthodontic therapy?

   1. Correction of jaw discrepancies
   2. Alteration in habits
   3. Alignment of teeth
   4. Improvement of occlusal function

   সঠিক উত্তর: Alteration in habits

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B

4. The earliest evidence of calcification of primary incisors is seen at:

   1. 11 weeks in utero
   2. 20 weeks in utero
   3. At birth
   4. 6 months postnatal

   সঠিক উত্তর: 11 weeks in utero

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A

5. Jackson's Triad in orthodontics is best described as:

   1. Functional balance
   2. Structural balance
   3. Aesthetic harmony
   4. Occlusal stability

   সঠিক উত্তর: Structural balance

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B Jackson's Triad in orthodontics refers to the interrelationship between the skeletal structure, dental occlusion, and soft tissue (facial profile), emphasizing the importance of achieving a harmonious and balanced craniofacial framework. This triad ensures that the structural components of the face and jaws are properly aligned, which is fundamental for effective orthodontic treatment planning. Achieving structural balance helps in attaining proper function, aesthetics, and long-term stability of the occlusion. Therefore, Jackson's Triad is best described as Structural balance. Reference: Contemporary Orthodontics, 6th Edition.

6. The maxillary second premolar most frequently erupts:

   1. Labially
   2. Palatally
   3. Buccally
   4. Lingually

   সঠিক উত্তর: Palatally

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B

7. Which of the following is NOT a prerequisite for starting orthodontic treatment?

   1. Good oral hygiene
   2. Absence of active caries
   3. Hypertension
   4. Patient motivation

   সঠিক উত্তর: Hypertension

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option C

8. Which structure is derived from the first branchial arch?

   1. Mandible
   2. Maxilla
   3. Hyoid bone
   4. Stapes

   সঠিক উত্তর: Maxilla

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B

9. Primate spaces are typically found in:

   1. Only humans
   2. Most mammalian species
   3. Only in carnivores
   4. Only in herbivores

   সঠিক উত্তর: Most mammalian species

   ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B

10. A distal step in the primary dentition is most likely to result in:

    1. Class I occlusion
    2. Class II malocclusion
    3. Class III malocclusion
    4. Open bite

    সঠিক উত্তর: Class II malocclusion

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option B A distal step in the primary dentition indicates that the mandibular second primary molar is positioned more posteriorly relative to the maxillary second primary molar. This relationship often predicts a Class II molar relationship in the permanent dentition, where the lower jaw is relatively retruded compared to the upper jaw. The distal step disrupts normal mesial shift of the mandibular molars during growth, leading to an increased overjet characteristic of Class II malocclusion. Early identification helps in planning interceptive orthodontic treatment to prevent worsening of the malocclusion.Reference: Pediatric Dentistry: Infancy through Adolescence, Pinkham, 6th Edition.