MDS PREP
Instrumentation zone in periodontal therapy is
1. The portion of the tooth where calculus (or) necrotic cementum is found
2. CE junction
3. Exposed root surfaces
4. Deep periodontal pocket
Periodontics
Answer: 1
The instrumentation zone in periodontal therapy is the portion of the tooth where calculus or necrotic cementum is found.
Histologic examination of desquamative gingivitis shows
1. Hyperkeratosis
2. Loss of retepegs
3. Loss of basement membrane
4. All of the above
Histologic examination of desquamative gingivitis shows loss of basement membrane.
Most of the microorganisms present a two day old dental plaque will be
1. lactobacilli
2. fusiform bacilli
3. vibrios
4. cocci
Periodontics
Answer: 4
In the early stages of dental plaque formation, particularly within the first
few days, the predominant microorganisms are typically cocci, especially Streptococcus species.
These bacteria are among the first to colonize the tooth surface after a
cleaning, forming a biofilm.
Lactobacilli are more commonly associated with mature
plaque and caries development, as they thrive in acidic environments.
Fusiform bacilli and vibrios are more
commonly found in later stages of plaque development or in specific
conditions, such as periodontal disease.
Thus, in a two-day-old dental plaque, the majority of microorganisms will
indeed be cocci
The type of bone present labial to anterior teeth is
1. spongy
2. cortical
3. cancellous
4. squamous
Periodontics
Answer: 1
The bone located labial to anterior teeth is typically compact bone but can be
described as spongy or cancellous in some contexts referring to the internal
structure, depending on proximity to the tooth roots.
ANUG patients will have higher levels of one of the following is urine
1. Calcium
2. Bilirubin
3. Free cortisol
4. Glucose
Periodontics
Answer: 3
ANUG patients will have higher levels of free cortisol in urine.
Vestibular extension procedure results in
1. Increase in width of keratinised attached gingiva
2. Decrease in width of keratinised attached gingiva
3. Increase in width of non-keratinised attached gingiva
4. Decrease in width of non-keratinised attached gingiva
Periodontics
Answer: 3
Vestibular extension procedure results in an increase in width of non-keratinised
attached gingiva
The vestibular extension procedure is a surgical treatment that involves the
apical movement of the vestibular mucosal tissue to increase the width of
attached gingival tissue around a tooth. This procedure typically does not alter
the width of the keratinized attached gingiva, which is the tissue that is
directly connected to the tooth surface. Instead, it primarily increases the
non-keratinized attached gingival width, which is the part of the gingival
tissue that is not directly attached to the tooth but is still important for
periodontal health and aesthetics.
Subgingival curettage may result in all of of the following, except
1. root exposure
2. increased height of the gingiva
3. elimination of pockets
4. root sensitivity
Periodontics
Answer: 2
Subgingival curettage typically involves the removal of diseased tissue and can lead to root exposure and increased sensitivity. It may also help eliminate periodontal pockets. However, it does not result in an increased height of the gingiva; rather, it may lead to a reduction in gingival height due to tissue removal.
Which of the following flap technique does not eliminate pocket depth and hence cannot increase the width of keratinised gingiva
1) Modified Widman flap
2) Undisplaced flap
3) Apically displaced flap
4) All of the above
Periodontics
Answer: 1
The Modified Widman flap is designed for access to the root surface for debridement without significantly altering the pocket depth or increasing the width of keratinized gingiva. Other techniques, such as apically displaced flaps, aim to modify the gingival architecture.