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.
Which one of the following holds good i case of iontophoresis
1) Sodium chloride is used in this technique
2) It is safe to use on people with pacemakers
3) The pulp tester is used for the electric charge
4) It encourages negative ions to penetrate the tooth ions
Periodontics
Answer: 4
Explanation: Iontophoresis is a technique that uses a small electric current to drive charged substances (ions) into tissues. In dentistry, it is often used to deliver fluoride ions into the tooth structure, and it specifically encourages negative ions to penetrate.
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.
Root conditioning with citric acid helps in
1. Removal of endotoxin
2. Removal of smear layer
3. Regeneration of bone
4. All the above
Periodontics
Answer: 4
Root conditioning with citric acid helps in the removal of endotoxin and smear layer.
The most effective method of preventing periodontal disease in the general population is
1. oral hygiene
2. balanced diet
3. fluoride therapy
4. analgesics and antibiotics
Periodontics
Answer: 1
Maintaining good oral hygiene practices, such as regular brushing and flossing,
is the most effective way to prevent periodontal disease, as it reduces plaque
accumulation and gingival inflammation.
The purpose of guided tissue regeneration is
1. Prevention of epithelial migration
2. Elimination of junctional and pocket epithelium
3. Complete removal of all irritants
4. Careful curettage of the pocket wall surface
Periodontics
Answer: 1
The purpose of guided tissue regeneration is to prevent epithelial migration.
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.
Which of the following periodontal diseases does not have calculus:
1. ANUG.
2. Chronic adult periodontitis.
3. Juvenile periodontitis.
4. Periodontal abscess.
Periodontics
Answer: 3
Juvenile periodontitis, now referred to as localized aggressive periodontitis, is characterized by the loss of periodontal attachment and bone in adolescents and young adults, often without the presence of significant calculus. This distinguishes it from other forms of periodontitis, where calculus is typically present.