ADAT ADAT Clinical Sciences 3 — Questions and Answers
Question 1: A 9-year-old presents with a fractured permanent incisor exposing a pinpoint of pulp within one hour of trauma. Which treatment offers the best prognosis for continued root development?
- Direct pulp cap (Correct answer)
- Pulpectomy
- Apexification
- Extraction
Correct answer: Direct pulp cap
A small, recent pulp exposure in a young permanent tooth is ideally managed with direct pulp capping (or partial pulpotomy) to preserve vitality and allow continued root growth.
Question 2: Which type of dental caries progresses most rapidly and is often associated with frequent sugar exposure and reduced salivary flow?
- Arrested caries
- Chronic caries
- Rampant caries (Correct answer)
- Recurrent caries
Correct answer: Rampant caries
Rampant caries is a rapidly progressing, widespread decay linked to high sugar intake and diminished saliva, as seen in early childhood or xerostomia.
Question 3: During a crown preparation, which finish line design provides the most conservative reduction but can be difficult to read on an impression?
- Chamfer
- Shoulder
- Knife-edge (feather) (Correct answer)
- Beveled shoulder
Correct answer: Knife-edge (feather)
A knife-edge (feather) margin is the most conservative of tooth structure but produces an indistinct margin that is hard to identify.
Question 4: A patient reports pain that lingers for minutes after a cold stimulus is removed. This finding is most consistent with which pulpal diagnosis?
- Reversible pulpitis
- Irreversible pulpitis (Correct answer)
- Normal pulp
- Pulp necrosis
Correct answer: Irreversible pulpitis
Pain that lingers after removal of a thermal stimulus indicates irreversible pulpitis, requiring endodontic therapy or extraction.
Question 5: Which occlusal scheme is generally recommended for complete dentures to improve stability during lateral movements?
- Canine guidance
- Group function
- Balanced occlusion (Correct answer)
- Mutually protected occlusion
Correct answer: Balanced occlusion
Balanced occlusion, with simultaneous bilateral contacts in excursions, improves complete denture stability and retention.
Question 6: A biopsy of a white oral lesion that cannot be wiped off and has no other identifiable cause is reported as epithelial dysplasia. What is the clinical term for this lesion?
- Lichen planus
- Leukoplakia (Correct answer)
- Candidiasis
- Frictional keratosis
Correct answer: Leukoplakia
Leukoplakia is a clinical diagnosis of exclusion for a non-wipeable white patch, and dysplasia on biopsy indicates premalignant potential.
Question 7: Which muscle is primarily responsible for protrusion of the mandible?
- Temporalis
- Masseter
- Lateral pterygoid (Correct answer)
- Medial pterygoid
Correct answer: Lateral pterygoid
The lateral pterygoid muscles, acting bilaterally, protrude the mandible and are also key in depression and lateral movements.
ADAT ADAT Clinical Sciences 3
A 9-year-old presents with a fractured permanent incisor exposing a pinpoint of pulp within one hour of trauma.
Which treatment offers the best prognosis for continued root development?