MDS PREP
Bone graft procedures are most successful in treating
1) Furcation involvements
2) Deep, two-wall craters
3) Narrow three-wall defects
4) None of the above
Periodontics
Answer: 3
Bone graft procedures are most successful in treating narrow three-wall defects. These are defects that extend from the crest of the alveolar bone to the alveolar crest and involve only one surface of the tooth root. The success of a bone graft in such cases is due to the presence of three walls of intact bone that can provide stability and support for the graft material, allowing for predictable and effective regeneration of the missing bone tissue.
Efficient way of calculus removal is
1) A relaxed instrument grasp and light lateral working strokes
2) A tight instrument grasp and light lateral working strokes
3) A tight instrument grasp and firm lateral working strokes
4) None of the above
Periodontics
Answer: 3
Explanation:
For effective calculus removal, a tight instrument grasp combined with firm lateral working strokes is essential. This technique allows for better control and application of force, which is necessary to effectively dislodge calculus from the tooth surface.
When should the correction of occlusal prematurities be performed?
1 At the same time as soft tissue surgery
2 Before starting soft tissue therapy
3. Gross corrections should be done be- fore surgery and finer adjustments after surgery
4. After tissue healing, following surgery is completed
Periodontics
Answer: 3
Addressing significant occlusal prematurities prior to surgical intervention
prevents undue stress and facilitates proper healing, while finer adjustments
can be made post-surgically.1
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.
Craters in facial and lingual interdental bone are best eliminated by
1. Gingivectomy
2. Osseous reconturing
3. Osseous regeneration procedure
4. Curettage
Periodontics
Answer: 3
Craters in facial and lingual interdental bone are best eliminated by osseous regeneration procedures.
A young adult shows non-fluctuant, tender and redness swelling in the marginal ginginal lesion. This is most likely:
1. Periodontal abscess.
2. Periapical abscess.
3. Gingival abscess.
4. Periapical sinus.
Periodontics
Answer: 3
A gingival abscess is localized to the gingiva
and typically presents as a painful, non-fluctuant swelling with redness and
tenderness. It differs from periodontal abscesses, which involve deeper
structures, and periapical abscesses, which originate from the tooth apex.
When doing instrumentation near the cementoenamel junction, cementum completely removed because it is
1. very thin in this area
2. usually softer than subgingival calculus
3. necrotic in the pocket
4. all of the above
Periodontics
Answer: 4
The cementum near the cementoenamel junction (CEJ) is indeed very thin, making
it more susceptible to removal during instrumentation. Additionally, cementum
can be softer than subgingival calculus, and in cases of periodontal disease, it
may become necrotic.
Secondary occlusal traumatism is least likely to be associated with
1. inflamed gingiva
2. bruxism
3. tooth mobility
4. migration of teeth
Periodontics
Answer: 1
Secondary occlusal trauma primarily relates to occlusal discrepancies or effects
on tooth mobility due to periodontal attachment loss rather than localized
gingival inflammation alone.