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Dental Prosthodontics — MCQ ও উত্তর

ডেন্টাল ভর্তি · । এই অধ্যায়ে মোট 97টি প্রশ্ন আছে। নিচে প্রথম 10টি প্রশ্ন ও সঠিক উত্তর দেওয়া হলো।

এই অধ্যায়ে সব প্রশ্নে অনুশীলন করুন

  1. How do mandibular movement patterns in complete denture wearers compare to those with natural dentition?

    1. They are only vertical in denture wearers
    2. They are more restricted in denture wearers
    3. They are more random in denture wearers
    4. They are identical

    সঠিক উত্তর: They are identical

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option D Mandibular movement patterns in complete denture wearers closely resemble those in individuals with natural dentition because the neuromuscular control of the mandible remains intact regardless of dentition status. Although dentures provide an artificial occlusal surface, the muscles and joints guide mandibular motions similarly, allowing functional movements such as protrusion, retrusion, and lateral excursions. Properly fabricated dentures restore vertical dimension and occlusal plane, enabling physiologic movement patterns to be maintained without significant restriction or randomness. Therefore, mandibular kinematics in denture wearers are fundamentally the same as in those with natural teeth.Reference: Textbook of Prosthodontics, J. F. McCabe, 3rd Edition.

  2. Which physical factor is most crucial for achieving optimal retention of a complete denture?

    1. Maximum extension of the denture base
    2. Increased vertical dimension
    3. Use of adhesives
    4. Polished surface of the denture

    সঠিক উত্তর: Maximum extension of the denture base

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A Optimal retention of a complete denture primarily depends on the maximum extension of the denture base within the anatomic limits. This ensures a greater surface area for adhesion and cohesion between the denture base and the mucosa, leading to enhanced peripheral seal and stability. Proper extension also enables effective utilization of the natural anatomic undercuts and support areas. In contrast, factors like increased vertical dimension or adhesives help retention to a lesser extent and are adjuncts rather than primary determinants. Hence, achieving the correct and extended denture base coverage is crucial for optimal retention. Reference: Prosthodontics, Sharry & Zarb, 13th Edition.

  3. When chewing tough foods, patients with complete dentures generally prefer to use which region?

    1. Premolar region
    2. Incisor region
    3. Molar region
    4. Canine region

    সঠিক উত্তর: Premolar region

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A Patients with complete dentures generally prefer to chew tough foods in the premolar region because it provides an optimal balance between masticatory efficiency and denture stability. The premolar region offers a favorable lever arm for force application while minimizing denture dislodgment, unlike the molar region, which produces greater displacing forces due to its distal position. Furthermore, the premolars help maintain better denture retention and prevent tipping or rocking during mastication, enhancing patient comfort and function. Therefore, this region is most effective for managing tougher foods with complete dentures. Reference: Prosthodontics, Sharry, D. R., 3rd Edition.

  4. What is the most frequent cause of ulcers and abrasions beneath denture bases?

    1. Improper occlusion
    2. Allergic reaction to acrylic
    3. Overextension of flanges
    4. Poor oral hygiene

    সঠিক উত্তর: Improper occlusion

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A The most frequent cause of ulcers and abrasions beneath denture bases is improper occlusion. When dentures do not have correct occlusal relationships, uneven pressure is exerted on the mucosa during mastication. This leads to repeated trauma and irritation, resulting in ulcerations and abrasions. Proper occlusal adjustment ensures even distribution of masticatory forces, preventing localized soreness and tissue damage. Other causes like flange overextension or allergies are less common and typically present differently. Thus, meticulous occlusal balancing is critical for denture comfort and tissue health. Reference: Prosthodontics, S.C. Rangarajan, 3rd Edition.

  5. Epulis fissuratum is best described as:

    1. A fungal infection of the palate
    2. A cystic lesion under the denture
    3. A fibrous tissue overgrowth at the denture border
    4. A traumatic ulcer on the tongue

    সঠিক উত্তর: A fibrous tissue overgrowth at the denture border

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option C Epulis fissuratum is a reactive hyperplasia of fibrous connective tissue caused by chronic irritation from ill-fitting dentures. It presents as a fibrous tissue overgrowth along the denture border, typically in the vestibular mucosa. The lesion is benign but can cause discomfort and interfere with denture fit. Treatment involves removal of the irritant and often surgical excision of the excess tissue to restore normal anatomy and achieve proper denture adaptation. Recognizing this lesion is crucial to prevent further tissue trauma and ensure patient comfort. Reference: Oral Pathology, Neville et al., 4th Edition.

  6. Which of the following is a primary etiological factor for denture stomatitis?

    1. Parafunctional habits
    2. Vitamin deficiency
    3. Excessive saliva
    4. Overextended denture borders

    সঠিক উত্তর: Parafunctional habits

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A Parafunctional habits, such as excessive clenching or grinding, create continuous mechanical irritation and trauma to the mucosal tissues beneath the denture. This repeated trauma disrupts the mucosal barrier, leading to inflammation and predisposes the area to infection by Candida species, resulting in denture stomatitis. Additionally, these habits increase mucosal pressure and microtrauma, impairing local blood flow and mucosal immunity, which are critical in the pathogenesis of this condition. Thus, controlling parafunctional habits is essential in preventing and managing denture stomatitis. Reference: Oral Pathology, Neville et al., 4th Edition.

  7. What is the best management for a patient presenting with a flabby ridge?

    1. Immediate relining of the denture
    2. Use of a soft liner
    3. Increase the vertical dimension
    4. Surgical removal of the flabby tissue

    সঠিক উত্তর: Surgical removal of the flabby tissue

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option D The best management for a patient presenting with a flabby ridge is surgical removal of the flabby tissue because the mobile, fibrous tissue compromises denture stability and retention. Excision of the hyperplastic tissue creates a firm and stable foundation, allowing for better adaptation and support of the denture base. This approach prevents continuous movement during function, which soft liners or relining alone cannot fully control. Increasing vertical dimension does not address the core structural issue. Proper surgical intervention ensures long-term prosthetic success and patient comfort. Reference: Contemporary Fixed Prosthodontics, Rosenstiel SF, Edition 5.

  8. A medium-sized mandibular torus is best managed by:

    1. Relieving the denture base over the torus
    2. Surgical excision in all cases
    3. Ignoring the torus during fabrication
    4. Reducing the vertical dimension

    সঠিক উত্তর: Relieving the denture base over the torus

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A A medium-sized mandibular torus usually does not require surgical removal unless it interferes significantly with denture stability or causes ulceration. The best management is relieving the denture base over the torus to avoid pressure and discomfort. This approach preserves the bony growth, prevents unnecessary surgery, and maintains mucosal health. Surgical excision is reserved for large tori causing prosthetic problems. Proper relief ensures the denture fits comfortably without traumatizing the mucosa over the torus. Reference: Prosthodontics: Principles and Management Strategies, Deepak Nallaswamy, 3rd Edition.

  9. With advancing age, the mandibular residual ridge typically:

    1. Becomes wider posteriorly
    2. Increases in height
    3. Remains unchanged
    4. Becomes narrower anteriorly

    সঠিক উত্তর: Becomes wider posteriorly

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A With advancing age, the mandibular residual ridge undergoes resorption primarily in a pattern that reduces height anteriorly but tends to broaden posteriorly due to continued remodeling. This compensatory widening of the posterior ridge helps provide a larger surface area for denture support. Clinically, this is critical when planning for denture stability and retention, especially in the molar region. Surgeons must consider this widening during alveoloplasty or implant placement to avoid encroaching on vital anatomical structures. The anterior ridge, in contrast, often becomes narrower and shorter due to resorption, affecting denture fit anteriorly.Reference: Contemporary Oral and Maxillofacial Surgery, James R. Hupp, 7th Edition.

  10. Denture sore mouth may be caused by which of the following?

    1. Psychological factors
    2. Excessive occlusal load
    3. High protein diet
    4. Use of soft liners

    সঠিক উত্তর: Psychological factors

    ব্যাখ্যা: সমাধান সঠিক উত্তর: Option A Denture sore mouth is primarily associated with psychological factors such as stress and anxiety, which can lead to mucosal hypersensitivity and pain without visible lesions. These factors may cause patients to perceive discomfort or burning sensations under the denture. Unlike mechanical causes, psychological influences affect pain perception and tolerance, making them a significant contributor in idiopathic cases of denture stomatitis. Proper patient management includes addressing these psychological aspects along with prosthetic adjustments. Reference: Contemporary Oral Medicine, Crispian Scully, 7th Edition.

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