MDS PREP
Finger-on-finger rest is used for scaling on
1. Maxillary posterior region
2. Mandibular posterior region
3. Mandibular anterior region
4. Maxillary anterior region
Periodontics
Answer: 1
Finger-on-finger rest is used for scaling in the maxillary posterior region.
The periodontal fiber group which inserts into two adjacent teeth is the
1. transseptal group
2. circular group
3. horizontal group
4. oblique group
Periodontics
Answer: 1
The transseptal fibers are a type of periodontal ligament fiber that run between the cementum of adjacent teeth. They help maintain the interproximal relationship between teeth and provide support to the gingival tissue. These fibers are important for the stability of the dental arch and help resist the forces that may cause teeth to drift apart.
Circular group fibers encircle the tooth.
Horizontal group fibers run horizontally between the
tooth and the alveolar bone.
Oblique group fibers run from the cementum to the bone
at an angle, providing resistance to vertical forces.
The term "sounding" is associated with
1. Radiographic assessment of osseous morphology
2. Transgingival probing
3. Collection of crevicular fluid
4. Pecussion of tooth
Periodontics
Answer: 2
The term "sounding" is associated with transgingival probing.
A thin bluish line around the gingival margin is due to the absorption of
1. Silver
2. Mercury
3. Drugs like tetracylines
4. Lead
Periodontics
Answer: 4
A thin bluish line around the gingival margin is due to the absorption of lead.
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.
Following is a contraindication to resection of crestal bone
1. Gingival recession
2. Postsurgical infection
3. Weakening of support to adjacent tooth
4. All of the above
Periodontics
Answer: 3
Weakening of support to adjacent teeth is a contraindication to resection of crestal bone.
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.
Which of the following is the main constituent of plaque?
1. Calcium and phosphorus
2. Water
3. Microorganisms
4. Glycoproteins and monosaccharides
Periodontics
Answer: 3
Dental plaque is primarily made up of microbial communities, which play a
significant role in the development of dental diseases like caries and
periodontal disease.