MDS PREP
The main blood supply to the buccal marginal gingiva is from the
1. subperiosteal vessels
2. interdental alveolar blood vessels
3. main artery of the pulp
4. supraperiosteal vessels
Periodontics
Answer: 4
The buccal marginal gingiva receives its main blood supply from the supraperiosteal vessels, which are located above the periosteum (a layer of connective tissue that covers the bone). These vessels are part of the periodontal ligament's blood supply and provide nutrients to the superficial tissues of the gum
The response to dental irritants is not likely to be altered by
1 cardiovascular disease
2. diabetes
3. pregnancy
4. steroid therapy
Periodontics
Answer: 1
While systemic conditions like diabetes, pregnancy, and steroid therapy can
significantly alter tissue responses to irritants, cardiovascular disease is
less likely to have a direct impact on local periodontal tissue responses.
A Gracey curette is said to be correctly adapted when the
1. Handle is parallel to the long axis of the tooth
2. Angle of blade to the tooth is 40
3. Lower shank is parallel with the tooth surface being sealed
4. None of the above
Periodontics
Answer: 3
The Gracey curette is a dental instrument used for subgingival scaling and root planing. Correct adaptation of the curette involves placing it at the correct angle to the tooth surface to effectively remove plaque and calculus. The lower shank of the curette should be parallel with the tooth surface to allow for proper engagement with the tooth structure.
Which of the following changes occur in tissues around teeth o of function for a long time?
1. Atrophy of cementum
2. Secondary dentin deposition
3. Thickening of the periodontal ligament
4. Osteoporosis
Periodontics
Answer: 4
Long-term functional changes around teeth can lead to osteoporosis in the
alveolar bone, which is characterized by a decrease in bone density. This can
affect the support of the teeth.
The best indication for osseous grafts for bone regeneration procedure is
1. One-walled infrabony pockets
2. One-walled suprabony pockets
3. Two-walled infrabony pockets
4. Three-walled infrabony pockets
Periodontics
Answer: 4
The best indication for osseous grafts for bone regeneration procedures is three-walled infrabony pockets.
Treatment for ANUG in initial stages without systemic involvement is
1. Metronidazole and penicillin therapy
2. Gingivectomy and gingivoplasty
3. Both A and B
4. None of the above
Periodontics
Answer: 4
Treatment for ANUG in initial stages without systemic involvement is none of the above; typically, it involves debridement and possibly antibiotics.
Which of part of the instrument should remain parallel (whenever possible) to the long axis of the tooth?
1. Blade
2. Cutting edge
3. Handle
4. Shank
Periodontics
Answer: 4
The part of the instrument that should remain parallel to the long axis of the tooth is the shank.
A hemiseptum is
1. one-wall defect
2. two-wall defect
3. three-wall defect
4. angular defect
Periodontics
Answer: 1
A hemiseptum refers to a periodontal defect with only one wall remaining, often
seen in sites of periodontal bone loss.