Removable Prosthodontics

Removable Prosthodontics SDLE MCQ | Part 4

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Removable Prosthodontics

Removable Prosthodontics SDLE MCQ | Part 4

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Category: Removable Prosthodontics

1) A patient with upper and lower complete dentures has an ulcer in the frenum. What is the cause?

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2) A patient misuses denture adhesive. What is the adverse effect?

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3) In which Kennedy classification is the altered cast technique used?

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4) A patient has Kennedy Class I with 8 mm of space. What major connector should be used?

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5) A patient has 6 mm from the gingival margin to the floor of the mouth. What major connector should be used?

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6) A patient has bilateral missing posterior teeth and mobile anterior teeth. What should be used as an indirect retainer?

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7) A patient has Kennedy Class I with a usable undercut on the most posterior abutment. What clasp should be used?

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8) A patient has tissue overgrowth near the lower denture. What is the preliminary management?

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9) A patient has epulis fissuratum. Why is it important to remove it before making a new denture?

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10) A patient wants to replace tooth #12 inexpensively. What is the best option?

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11) A patient with a history of anterior RPD has a red palate. What is the treatment?

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12) A patient has a full acrylic denture. What type of support does it provide?

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13) An elderly patient has labially inclined lower anterior teeth with 12 mm from the gingival margin to the vestibule. What major connector should be used?

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14) A patient has compromised lower anterior teeth and missing posterior teeth. What acts as an indirect retainer?

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15) A patient needs a crown on #36 with canine guidance occlusion. What articulator should be used?

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16) A patient has a mobile, hopeless tooth #31 in an RPD. What should be done?

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17) What resists horizontal forces in a denture?

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18) A patient has a complete denture with anterior teeth set too far labially. What is the effect?

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19) A patient has lower posterior teeth occluding buccal to the maxillary teeth. How should posterior teeth be set?

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20) A picture shows a rest on a lower central incisor without rest seat preparation. What is wrong?

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21) What should be reduced to manage occlusal issues?

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22) A patient pronounces "V" as "F" with a complete denture. What is the cause?

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23) A patient with osteoporosis and metastatic breast cancer needs to replace missing teeth. What is the best treatment?

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24) What is the simplest way to manage a broken retentive arm?

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25) What is the importance of occlusal index wax?

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26) A patient wants to replace tooth #12 after trauma. What is the best option?

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27) A patient cannot wear an immediate RPD the next morning. What is the cause?

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28) A patient is missing upper second premolars and all molars. What type of occlusion should be used?

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29) A patient with a complete denture complains of cheek biting. What is the cause?

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30) What is the best major connector for a patient missing bilateral upper premolars?

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31) What is the function of a surveyor?

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32) A patient with severe bone resorption in the upper anterior region wants to avoid bone grafting. What is the best prosthesis?

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33) What is the function of a proximal plate?

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34) How to minimize trauma from a half-pear major connector?

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35) A patient is missing lower anterior teeth and has periodontally compromised posterior teeth. What major connector should be used?

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36) What causes failure in acrylic dentures?

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37) A patient with a complete denture has numbness in the lower lip. What nerve is affected?

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38) A patient has bilateral posterior ridge resorption. What type of occlusion should be used?

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39) What causes papillary hyperplasia under a denture?

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The Ultimate Guide to Conquering the SDLE: Your Strategic Blueprint for Success

Preparing for the SDLE exam is a significant milestone in every aspiring dentist’s career. It’s more than just a test of memorized facts; it’s a comprehensive assessment of your clinical judgment and deep understanding of various dental specialties. Many candidates feel overwhelmed by the vast amount of information, unsure of where to start or how to focus their efforts efficiently.

This in-depth guide is designed to be your roadmap. We will walk you through proven, strategic steps to build a robust study plan, choose the right topics, and approach the exam with the confidence needed to excel.


Part 1: The Art of Smart Topic Selection

One of the most common pitfalls in exam preparation is trying to learn everything at once. A strategic approach to selecting your study topics is not just helpful—it’s crucial for efficient and effective learning.

Why is Topic Selection a Game-Changer?
Your study time is your most valuable resource. Without a clear plan, you can easily spend hours on low-yield information while neglecting the foundational concepts that form the core of the exam. Intelligent topic selection ensures that every hour you invest brings you a higher return in knowledge and exam readiness.

Your Step-by-Step Strategy to Begin:

  1. Start with Diagnosis in Every Major Subject.
    Before diving deep into complex procedures, ground yourself in the diagnosis for each core specialty: Restorative (Resto), Endodontics (Endo), Prosthodontics (Pros), and Periodontics (Perio). This approach is powerful because it builds critical connections between the subjects. Since most exam questions are clinically-based, understanding how to diagnose a problem is the first and most essential step toward finding the correct solution. You’ll start to see the “big picture” of patient care.

  2. Identify and Master the Foundational Topics.
    Every specialty has a set of fundamental principles that appear again and again. Your initial goal is not to become an expert in every rare condition, but to achieve complete mastery over these core topics. Think of it as building a strong skeleton; once that is in place, you can easily attach more detailed knowledge.


Part 2: Your Detailed Study Blueprint: What to Focus On

The SDLE exam is designed to test your basic knowledge, which means it consistently draws from a predictable set of high-yield topics within each specialty.

A Deep Dive into Key Specialties:

1. Restorative Dentistry

  • Diagnosis: The ICDAS System (International Caries Detection and Assessment System) is paramount. You must know it inside and out.

  • Classifications: Be thoroughly familiar with cavity classifications (Black’s, etc.).

  • Amalgam: Understand its phases, types of failures, and preparation design principles.

  • Partial Coverage: Differentiate clearly between inlays and onlays, including their indications and preparations.

Understanding ICDAS: A Practical Guide
ICDAS provides a standardized method for assessing caries. Here is a clear breakdown:

Code Description
0 Sound tooth surface
1 First visual change in enamel (seen only after drying)
2 Distinct visual change in enamel
3 Localized enamel breakdown without visible dentin
4 Underlying dark shadow from dentin
5 Distinct cavity with visible dentin
6 Extensive distinct cavity with visible dentin

2. Endodontics

  • Diagnosis: Master pulp testing, percussion, palpation, and radiographic interpretation.

  • Materials: Know the composition, pH, and side effects of key materials like irrigants and sealers.

  • Surgical Procedures: Understand the indications and steps for an apicectomy.

  • Regeneration: Be clear on the indications and materials used in regenerative endodontics.

  • Files: This is a favorite area for examiners. Learn the colors, cross-sections, and specific properties of different file systems, especially hand files like K-files and H-files.

  • Rotary Systems: Understand the basic principles and safety protocols.

3. Periodontics

  • Diagnosis: Be fluent in both the old and new (2017) classification systems for periodontal diseases.

  • Probes: Know the different types of probes and their specific markings.

  • Periodontal Diseases: Understand the etiology and characteristics of gingivitis and various forms of periodontitis.

  • Instruments: Identify and know the uses of scalers, Gracey curettes, and water irrigation systems.

  • Maintenance: Understand the protocols for supportive periodontal care and re-evaluation.


Part 3: Mastering the Question Bank: A Strategic Tool, Not a Crutch

Many candidates use question banks, but few use them optimally. The key is to approach them after you have built a strong foundational knowledge.

How to Truly Leverage Old Questions to Your Advantage:

  • Look for Recurring Patterns. As you go through question sets, you will start to notice that certain topics are tested repeatedly. These are your high-yield areas. Keep a log of these topics and ensure you know them cold.

  • Study the Topic, Not Just the Question. Don’t just memorize the answer to a specific question. When you encounter a question about, for example, “Wharton’s tumor,” don’t just note that the answer is the submandibular gland. Instead, open your textbook and read the entire section on salivary gland tumors. This transforms a single question into a comprehensive learning session.

  • Always Cross-Reference with Reliable Sources. Your primary sources of information should be standard textbooks and current scientific literature. Use the question bank to identify gaps in your knowledge, and then fill those gaps with authoritative material.

  • Take Notes on Every Answer Choice. When reviewing a question, don’t just look at the correct answer. For every incorrect option, write down a brief note explaining why it is wrong. This active learning technique forces you to cover a much broader scope of information and deepens your understanding significantly.

  • Learn from Colleagues. Connect with peers who have recently taken the exam. They can provide valuable insights into the exam’s focus and atmosphere. However, filter this advice—everyone’s experience is subjective.

  • Answer Questions on Your Own First. Resist the temptation to immediately look at the answers. Challenge yourself to reason through the question independently. This builds critical thinking and problem-solving skills that are essential for the exam.


Part 4: Demystifying Exam Difficulty and Building Confidence

It’s natural to feel anxious, especially when you hear stories about “impossible” questions. Let’s reframe that thinking.

Are All the Questions Difficult? Absolutely Not.
Any well-constructed exam has a mix of easy, moderate, and difficult questions. The difficult ones are typically a small percentage, while the bulk of the exam consists of questions of easy to moderate difficulty. The psychological trap is that our brains tend to remember and talk about the challenging questions we faced. This creates a false impression that the entire exam was overwhelmingly hard.

The Takeaway: Don’t let post-exam stories from colleagues panic you. If you find a subject challenging, go back and solidify your basic understanding in that area. A strong foundation will allow you to confidently answer the majority of the questions.


Part 5: Essential Mindset and Final Takeaways for Success

Your preparation isn’t just about intellectual knowledge; it’s also about the right mindset and habits.

Your Success Mantra:

  • Invest Your Time Wisely. The exam is challenging but passable for those who are well-prepared. Consistent, focused study is an investment that will pay off immensely, not just for the exam but for your clinical career.

  • Rethink Study Groups. Avoid using study groups for initial learning. They often become inefficient social sessions. However, they can be excellent for final revision, quizzing each other, and discussing complex topics after you have done your individual studying.

  • Build an Unshakeable Foundation. Prioritize depth over breadth in your core subjects. A deep understanding of fundamental principles will allow you to deduce answers to questions you may not have directly studied.

  • Aim for Mastery, Not Just Passing. Go into the exam with the goal of truly understanding the material. This mindset shift reduces anxiety and fosters a more profound, long-lasting knowledge that will serve you far beyond the exam hall.


Examples of Removable Prosthodontics SDLE MCQ

1. Category: Removable Prosthodontics – Impression Techniques
Question: For a patient with a firm edentulous ridge and a severely atrophic tongue, which impression technique is most appropriate?
A) Mucostatic
B) Selective Pressure
C) Functional
D) Normal (Anatomic)
Correct Answer: 4
Explanation: A normal or anatomic impression technique is suitable for firm, well-formed ridges without significant undercuts or mobile tissue. It records the mucosa in a resting state, which is ideal when the anatomy is favorable and no special conditions (like flabby tissue) are present.


2. Category: Removable Prosthodontics – Kennedy Classification
Question: A patient has lost teeth #11, #21, #22, and #23. What is the Kennedy classification for this arch?
A) Class I
B) Class II
C) Class III
D) Class IV
Correct Answer: 4
Explanation: Kennedy Class IV is characterized by a single, bilateral edentulous area located anterior to the abutment teeth and crossing the midline. The loss of the four incisors fits this definition precisely.


3. Category: Complete Dentures – Phonetics
Question: A patient with new complete dentures has difficulty pronouncing “S” sounds, which come out as “Th”. What is the most likely cause?
A) Over-extended buccal flanges
B) Incorrect vertical dimension
C) Upper anterior teeth set too far lingually
D) Insufficient posterior palatal seal
Correct Answer: 3
Explanation: The “S” sound is made when air passes through a narrow gap between the palate and the tongue. If the upper anterior teeth or the denture base in the rugae area are too thick or positioned too far palatally, it disrupts this space, leading to a lisp.


4. Category: Removable Partial Dentures – Direct Retainers
Question: For a Kennedy Class III modification 1 scenario with a mid-buccal undercut on an abutment tooth, which clasp is generally considered the most ideal?
A) Circumferential (Aker) Clasp
B) Ring Clasp
C) RPI Clasp (I-bar)
D) Embrasure Clasp
Correct Answer: 3
Explanation: The RPI system (Rest, Proximal Plate, I-bar) is designed for distal extension cases but its I-bar component is excellent for engaging mid-buccal undercuts in any design. It provides good retention with minimal tooth contact and reduced potential for gingival irritation.


5. Category: Occlusion
Question: Which type of occlusion is characterized by simultaneous contact on both sides in centric and eccentric positions, and is the goal for Complete Dentures?
A) Canine Guidance
B) Unilateral Balanced Occlusion
C) Mutually Protected Occlusion
D) Bilateral Balanced Occlusion
Correct Answer: 4
Explanation: Bilateral balanced occlusion ensures that the dentures remain stable during various jaw movements. Simultaneous contacts on both sides prevent the denture from tipping, rotating, or dislodging during chewing and other functions.


6. Category: Removable Partial Dentures – Major Connectors
Question: A patient has large, spaced diastemas between their mandibular anterior teeth. Which major connector is most indicated to prevent food impaction and provide stability?
A) Lingual Bar
B) Labial Bar
C) Lingual Plate (Linguoplate)
D) Sublingual Bar
Correct Answer: 3
Explanation: A lingual plate covers the lingual surfaces of the anterior teeth and the gingiva. It is the connector of choice when there are diastemas because it prevents food from being trapped between the teeth and the connector, and it provides excellent bracing and stability.


7. Category: Complete Dentures – Diagnosis
Question: A patient returns for a 24-hour follow-up after receiving new complete dentures. You notice a distinct, well-defined red spot on the mandibular ridge. What is the most probable cause?
A) An allergic reaction to the acrylic
B) A pressure spot from an over-extended flange
C) An area of high occlusal pressure
D) Denture-induced stomatitis
Correct Answer: 3
Explanation: In the immediate post-insertion period, a localized red spot is almost always a “pressure spot” caused by a specific area of the denture base (often an internal roughness or a slight over-compression in the impression) creating concentrated pressure on the mucosa, indicating the need for a localized adjustment.


8. Category: Removable Prosthodontics – Materials
Question: A patient with a known sulfite allergy should avoid impressions with which material?
A) Polyvinyl Siloxane (PVS)
B) Alginate
C) Polysulfide
D) Polyether
Correct Answer: 3
Explanation: Polysulfide impression material contains lead dioxide as a catalyst, and some formulations can include sulfites. Since the patient has a sulfite allergy, it is contraindicated to use any material that may trigger a reaction. Polyether or PVS are safer alternatives.


9. Category: Removable Partial Dentures – Design
Question: The primary function of a surveyor in the fabrication of a Removable Partial Denture is to:
A) Determine the ideal occlusal scheme
B) Identify and measure tooth and soft tissue undercuts
C) Assess the health of the periodontal tissues
D) Select the shade for artificial teeth
Correct Answer: 2
Explanation: The surveyor is a crucial tool used to analyze the cast. Its main functions are to identify the height of contour on teeth, locate and quantify undercuts for clasp placement, determine the most favorable path of insertion and removal, and tripod the cast for machining.


10. Category: Implant Prosthodontics
Question: What is the name of the component that is attached to the dental implant and provides the interface for the retention of an overdenture?
A) Healing Abutment
B) Impression Coping
C) Prosthetic Abutment
D) Scan Body
Correct Answer: 3
Explanation: A prosthetic abutment is the component that screws into the implant fixture and emerges through the gingiva. It serves as the attachment point for the prosthesis. In overdentures, this can be a ball attachment, locator, or bar clip that provides retention to the denture.

Conclusion: Your Journey to Success Starts Now

The path to SDLE success is a marathon, not a sprint. It requires careful planning, disciplined execution, and a positive, resilient mindset. Start by strategically selecting your topics, build your knowledge layer by layer, and use practice questions as a diagnostic tool to refine your understanding.

Remember, confidence is born from competence. Every well-understood topic, every mastered concept, and every strategically studied hour brings you closer to your goal.

You have the capability and the resources to excel. Trust your preparation, stay focused on your plan, and walk into the exam ready to demonstrate your knowledge. Good luck

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