Here are 30 viva questions and answers related to radiographs of periapical cysts:
- Q: What is a periapical cyst?
- A: A periapical cyst is a cystic lesion that develops at the apex of a tooth root in response to chronic inflammation.
- Q: What is the radiographic appearance of a periapical cyst?
- A: Radiographically, a periapical cyst appears as a well-defined radiolucency around the apex of a tooth, often with a sclerotic border.
- Q: How is a periapical cyst different from a periapical granuloma on a radiograph?
- A: A periapical cyst appears as a well-defined radiolucency, while a periapical granuloma shows a less defined radiolucency with possible root resorption.
- Q: What is the most common cause of periapical cyst formation?
- A: Pulpal necrosis and chronic inflammation due to untreated dental caries are the most common causes.
- Q: Can a periapical cyst be asymptomatic?
- A: Yes, a periapical cyst can be asymptomatic and may only be detected through routine dental radiographs. Viva Question and Answers Related to Development and Growth of Teeth
- Q: How does a periapical cyst affect surrounding structures on a radiograph?
- A: It can cause displacement and resorption of adjacent teeth roots.
- Q: What is the role of radiographs in diagnosing periapical cysts?
- A: Radiographs are essential for visualizing and diagnosing periapical cysts, providing information on size, location, and impact on surrounding structures.
- Q: What radiographic technique is commonly used for periapical cyst diagnosis?
- A: Periapical radiographs and, in some cases, cone-beam computed tomography (CBCT) are commonly used.
- Q: Can a periapical cyst resolve on its own without intervention?
- A: Periapical cysts typically do not resolve spontaneously and may require dental intervention.
- Q: How does the radiographic appearance of a periapical cyst differ from a radicular cyst?
- A: Radiographically, both may appear similar, but a radicular cyst is specifically associated with a non-vital tooth. Viva Question and Answers Related to Dental Anatomy
- Q: What is the differential diagnosis for a periapical radiolucency?
- A: Differential diagnoses include periapical granuloma, radicular cyst, and odontogenic keratocyst.
- Q: How is the size of a periapical cyst determined on a radiograph?
- A: The size of a periapical cyst is assessed by measuring the radiolucent area around the affected tooth on the radiograph.
- Q: What is the treatment approach for a periapical cyst?
- A: Treatment usually involves root canal therapy or extraction of the affected tooth, followed by enucleation of the cystic lesion.
- Q: Can a periapical cyst recur after treatment?
- A: Recurrence is rare if the cyst is adequately treated, including removal of the cystic lining.
- Q: How does a periapical cyst impact the surrounding bone density on a radiograph?
- A: The cyst can cause localized bone destruction, leading to decreased bone density in the affected area. Viva Question and Answers Related to Development and Growth of Teeth
- Q: What is the radiographic appearance of a healing periapical cyst post-treatment?
- A: Over time, a healing periapical cyst may show gradual bone regeneration, resulting in a reduction in the size of the radiolucency.
- Q: Can periapical cysts be associated with non-vital teeth only?
- A: While most periapical cysts are associated with non-vital teeth, they can also be found in association with vital teeth with chronic pulpitis.
- Q: How does a periapical cyst differ from a dentigerous cyst on a radiograph?
- A: A periapical cyst is associated with the apex of a tooth, whereas a dentigerous cyst surrounds the crown of an impacted tooth.
- Q: What is the significance of radiographic follow-up after periapical cyst treatment?
- A: Radiographic follow-up helps monitor healing, identify any recurrence, and assess the success of the treatment.
- Q: Can periapical cysts be diagnosed clinically without radiographs?
- A: While clinical signs may raise suspicion, radiographs are essential for a definitive diagnosis of periapical cysts. Viva Question and Answers in Periodontal Ligament
- Q: How does a periapical cyst affect the pulp space on a radiograph?
- A: The cyst can cause obliteration or narrowing of the pulp space in the affected tooth.
- Q: Are periapical cysts more common in specific age groups?
- A: Periapical cysts can occur at any age, but they are more commonly seen in adults.
- Q: What is the role of cone-beam computed tomography (CBCT) in periapical cyst diagnosis?
- A: CBCT provides detailed three-dimensional images, aiding in better visualization and assessment of the periapical region.
- Q: Can periapical cysts lead to sinus involvement on a radiograph?
- A: Yes, large periapical cysts in the maxillary posterior region can extend into the maxillary sinus.
- Q: How does the radiographic appearance of a periapical cyst differ from a lateral periodontal cyst?
- A: A lateral periodontal cyst is usually located along the lateral root surface, whereas a periapical cyst is associated with the apex.
- Q: What is the role of vitality testing in periapical cyst diagnosis?
- A: Vitality testing helps determine if the associated tooth is vital or non-vital, providing additional information for diagnosis.
- Q: Can trauma be a contributing factor in the development of periapical cysts?
- A: Yes, trauma leading to pulpal necrosis can contribute to the formation of periapical cysts.
- Q: How does a periapical cyst impact adjacent anatomical structures, such as the inferior alveolar nerve?
- A: In some cases, periapical cysts can cause displacement and compression of the inferior alveolar nerve, leading to numbness or paresthesia.
- Q: Is biopsy necessary for the diagnosis of periapical cysts?
- A: Biopsy is usually not necessary for the diagnosis of periapical cysts, as they can be diagnosed based on clinical and radiographic findings.
- Q: Can periapical cysts be associated with systemic conditions?
- A: Periapical cysts are generally localized conditions and are not commonly associated with systemic diseases. Viva Question and Answers Related to Clasps used in Orthodontics!
