MDS PREP
A young adult shows non-fluctuant, tender and red swelling in the marginal gingival lesion. This is most likely
1. Periodontal abscess
2. Periapical abscess
3. Gingival abscess
4. Periapical sinus
Periodontics
Answer: 3
A young adult with non-fluctuant, tender, and red swelling in the marginal gingival lesion is most likely to have a gingival abscess.
Least involved furcation is
1. Mandibular first molar
2. Maxillary first molar
3. Maxillary first premolar
4. Mandibular second molar
Periodontics
Answer: 3
The least involved furcation is seen in the maxillary first premolar.
Sensitivity of roots after periodontal surgery results from all of the following except
1) Exposed dentine tubules
2) Exposed cementum
3) Formation of plaque
4) None of the above
Periodontics
Answer: 2
After periodontal surgery, root sensitivity is primarily due to the exposure of dentin tubules (option 1). When the root surface is exposed, the dentin becomes sensitive to stimuli because the tubules can transmit sensations to the pulp.
Exposed cementum (option 2) is less likely to cause sensitivity because cementum is not as innervated as dentin. Formation of plaque (option 3) can lead to sensitivity as it may irritate the surrounding tissues and contribute to inflammation.
An enamel pearl located on disal furcation of maxillary molar with furcation involvement can be best treated by
1. Flap surgery and odontoplasty
2. Extraction of tooth
3. Flap surgery and hemisection
4. Flap surgery and root amputation
Periodontics
Answer: 1
An enamel pearl located on the distal furcation of a maxillary molar with furcation involvement can be best treated by flap surgery and odontoplasty.
The outcome of results of laterally positioned flap depends on
1) Presence of sufficient bone support at donor site
2) Thickness of attached gingiva at donor site
3) Width of attached gingiva at donor site
4) All of the above
Periodontics
Answer: 4
Explanation:The success of a laterally positioned flap in periodontal surgery is influenced by several factors, including the presence of sufficient bone support at the donor site, the thickness of attached gingiva at the donor site, and the width of attached gingiva at the donor site. All these factors contribute to the healing and stability of the flap.
Guided tissue regeneration (GTR) is used mainly in the treatment of
1. Class I furcations
2. Class II furcations
3. Class III furcations
4. All of the above
Periodontics
Answer: 2
Guided tissue regeneration (GTR) is used mainly in the treatment of Class II furcations.
During activation of a scaling instrument, the facial surface of the blade and tooth surface should form an angle of
1. > 15 but < 45
2. > 30 but < 60
3. > 45 but < 90
4. > 90 but < 180
Periodontics
Answer: 3
During activation of a scaling instrument, the facial surface of the blade and tooth surface should form an angle of > 45 but < 90 degrees.
Following the application of disclosing solution on teeth, a patient can remove plaque most effectively by using
1. dental floss
2. a strong mouthwash
3. a water irrigating device
4. a soft bristle brush
Periodontics
Answer: 4
A soft bristle brush is the most effective tool for removing plaque after the application of a disclosing solution. It allows for thorough cleaning of the tooth surfaces, including areas that may be difficult to reach with other methods.