MDS PREP
Ostectomy procedure is indicated in
1. Physiological architecture of alveolar bone
2. Correction of tori
3. Reverse architecture bone defects
4. Correction of bone ledges
Periodontics
Answer: 3
Ostectomy procedures are indicated for reverse architecture bone defects.
On which of the following tooth surfaces are initial prematurities in retruded contact position most common
1. Distobuccal cusps of maxillary first molars and mesiofacial cusps of mandibular first molars
2. Distal slopes of maxillary canines and mesial slopes of buccal cusps of mandibular first premolars
3. Distal inclines of buccal cusps of mandibular first premolars and mesial in clines of lingual cusps of maxillary first
premolars
4. None of the above
Periodontics
Answer: 3
Distal inclines of buccal cusps of mandibular first premolars and
mesial inclines of lingual cusps of maxillary first premolars
These specific occlusal surfaces are common areas where contacts can develop
prematurely, emphasizing the importance of careful occlusal adjustments.
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.
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
Which of the following groups of fibers belongs to the gingivodental group and not to the periodontal ligament?
1. Circular
2. Alveolar crest
3. Transseptal
4. Horizontal
Periodontics
Answer: 1
The circular fibers are part of the gingivodental group and are located in the
marginal gingiva, encircling the teeth. In contrast, the alveolar crest,
transseptal, and horizontal fibers are part of the periodontal ligament.
The most important objective in equilibrating the natural dentition is to
1. ensure balance in eccentric movements
2. narrow the occlusal table
3. achieve a more favorable distribution of occiusal forces
4. eliminate open contacts and prevent food impaction
Periodontics
Answer: 3
Equilibration aims to distribute occlusal forces evenly across the dentition to
prevent excessive stress on individual teeth, thereby reducing the risk of
mobility, wear, and periodontal issues.
Systemic conditions which can affect the health of the gingiva are
1. agranulocytos
2. leukemia
3. granulocytopenia
4. all of the above
Periodontics
Answer: 4
agranulocytosis, leukemia, and granulocytopenia—can significantly impact the
health of the gingiva by affecting the immune response and increasing
susceptibility to infections.
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.