Question 1

With external resorption,the pulpal tissue resorbs the dentin surrounding the pulp chamber or canal and eventually perforates to the periodontal ligament.With internal resorption,the cells of the periodontal ligament resorb the cementum and dentin of the root or pulp chambers to reach the pulp.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second is false.
D)First statement is false,second is true.

Both statements are false.

Accepted Answer

Both statements are false. In external resorption, the cells from the periodontal ligament resorb the outer surface of the tooth, including cementum and dentin. In internal resorption, the resorption starts from within the pulp chamber or canal, where the pulpal tissue resorbs the surrounding dentin.

Question 2

Cemento-osseous dysplasia is a condition of the jaws that is inherently a malignant lesion.

Accepted Answer

Cemento-osseous dysplasia is a benign condition that affects the jaws.

Question 3

How do a periapical cyst and a periapical granuloma appear radiographically?&#10;A)A cyst is always larger.&#10;B)A cyst is always smaller.&#10;C)They may appear identical.&#10;D)A granuloma is radiopaque.

Accepted Answer

Both a periapical cyst and a periapical granuloma can appear as radiolucent lesions on a radiograph and may be difficult to distinguish.

Question 4

Identify the lesion that will appear radiopaque on radiographs:&#10;A)pulp denticles.&#10;B)periapical cyst.&#10;C)periapical granuloma.&#10;D)first-stage periapical cemental dysplasia.

Accepted Answer

Pulp denticles, also known as pulp stones, are calcified masses within the dental pulp cavity. They appear radiopaque (white) on radiographs because they are denser than the surrounding tissue.

Question 5

Identify which lesion is recognized by the formation of dense bone around the apex of a tooth in response to low-grade pulpal necrosis:&#10;A)root resorption.&#10;B)residual periapical lesions.&#10;C)cemento-osseous dysplasia.&#10;D)periapical condensing osteitis.

Accepted Answer

Periapical condensing osteitis is recognized by the formation of dense bone around the apex of a tooth in response to low-grade pulpal necrosis. Root resorption involves the breakdown of the tooth structure, residual periapical lesions are areas of inflammation and infection that remain after a root canal, and cemento-osseous dysplasia is a benign fibro-osseous lesion that affects the jaws.

Question 6

Focal cemento-osseous dyplasia is a condition similar to periapical cemento-osseous dysplasia but occurs in the posterior mandible;distal to the canines.&#10;A)anterior maxillary;distal to the canines&#10;B)posterior mandible;distal to the canines&#10;C)maxillary anterior (canine to canine)teeth&#10;D)mandibular anterior (canine to canine)teeth

Accepted Answer

Focal cemento-osseous dysplasia is a condition that occurs in the posterior mandible, specifically distal to the canines. Choices A, C, and D are incorrect because they describe other areas of the jaws or dentition.

Question 7

The only possible radiographic findings related to pulpitis are all of the factors EXCEPT one.Which one is the EXCEPTION?,such as caries,pulp exposure,tooth fracture,previous pulp capping,or deep restorations.

A)Tooth fracture
B)Deep restorations
C)Previous pulp capping
D)Trauma to the periodontal ligament

Accepted Answer

Trauma to the periodontal ligament is not directly related to pulpitis, although it may lead to secondary pulp inflammation if the injury is severe enough to cause pulp exposure. Caries, pulp exposure, tooth fracture, and previous pulp capping are all common radiographic findings associated with pulpitis. Deep restorations can also indicate an increased risk for pulp inflammation, as they may cause irritation or damage to the pulp tissue during their placement.

Question 8

Fistulous tracts are almost always seen on periapical radiographs.

Accepted Answer

Fistulous tracts, which are pathways that can form as a result of infection leading from an abscess to the surface of the skin or mucosa, are not typically visible on periapical radiographs. These radiographs mainly show the bone and the roots of the teeth, not soft tissue structures like fistulous tracts.

Question 9

The first detectable radiographic sign of periapical pathology is:&#10;A)hypercementosis.&#10;B)loss of the lamina dura.&#10;C)disruption of the lamina dura.&#10;D)thickening of the periodontal ligament.

Accepted Answer

The answer of The first detectable radiographic sign of periapical...

Question 10

Pulp denticles or Pulp stones are calcifications that appear as well-defined radiopacities within the pulp chamber.

Accepted Answer

Pulp denticles or pulp stones are indeed calcifications that appear as radiopacities within the pulp chamber.

Question 11

Identify a possible cause(s)for the formation of secondary dentin:&#10;A)cysts.&#10;B)pulp capping.&#10;C)occlusal trauma.&#10;D)deep dental caries.

Accepted Answer

The answer of Identify a possible cause(s)for the formation of...

Question 12

The radiographic densities of pulp chambers and canals differ because of all of the following EXCEPT one.Which one is the EXCEPTION?&#10;A)Size&#10;B)Vitality&#10;C)Position in the tooth&#10;D)Radiographic angulation

Accepted Answer

The answer of The radiographic densities of pulp chambers and...

Question 13

High pulp horns on teeth are usually associated with young patients,but can occur in all age groups.

Accepted Answer

The answer of High pulp horns on teeth are usually...

Question 14

Root resorption can be caused by all of the following EXCEPT one.Which one is the EXCEPTION?&#10;A)Trauma&#10;B)Hypercementosis&#10;C)Pressure from cysts&#10;D)Excessive orthodontic pressure

Accepted Answer

The answer of Root resorption can be caused by all...

Question 15

To make the diagnosis of periapical pathology,the tooth involved must test nonvital.

Accepted Answer

The answer of To make the diagnosis of periapical pathology,the...

Question 16

Residual periapical lesions are radiolucencies that appear in edentulous areas of either the maxilla or the mandible.They represent pathologic areas that arose from teeth extracted in the area.&#10;A)Both statements are true.&#10;B)Both statements are false.&#10;C)First statement is true,second is false.&#10;D)First statement is false,second is true.

Accepted Answer

The answer of Residual periapical lesions are radiolucencies that appear...

Question 17

Cemento-osseous dysplasia frequently affects which demographic group?&#10;A)Young African-Americans&#10;B)Middle-aged African-American males&#10;C)African-Americans over the age of 80&#10;D)Middle-aged African-American females

Accepted Answer

The answer of Cemento-osseous dysplasia frequently affects which demographic group?&#10;A)Young...

Question 18

Identify the radiographic sign of pulpitis in the pulp chamber:&#10;A)widened lamina dura.&#10;B)changes in alveolar bone.&#10;C)no radiographic changes are seen.&#10;D)the presence of additional pulp denticles.

Accepted Answer

The answer of Identify the radiographic sign of pulpitis in...

Question 19

Periapical lesions are seen in the apical tissues surrounding the tooth after the pulp has become necrotic.The periodontal membrane,lamina dura,and crown of the tooth are the affected tissues.&#10;A)Both statements are true.&#10;B)Both statements are false.&#10;C)First statement is true,second is false.&#10;D)First statement is false,second is true.

Accepted Answer

The answer of Periapical lesions are seen in the apical...

Deck 22: Pulpal and Periapical Lesions