MDS PREP
The periodontal pocket principally contains
1. Living and degenerated leucocytes
2. Microorganisms, their products and debris
3. Gingival fluids and salivary mucin
4. Desquamated epithelial cells
Pedodontics
Answer: 2
The periodontal pocket principally contains microorganisms, their products, and debris.
Signs of TFO (trauma from occlusion) are all of the following except
1. Mobility of teeth
2. Loss of attachment and formation of pockets
3. Widening of the periodontal ligament
4. Migration of teeth
Pedodontics
Answer: 2
Loss of attachment and formation of pockets is not a sign of trauma from occlusion.
The instrument best suited for root planning is
1. Hoe
2. Scaler
3. File
4. Curette
The instrument best suited for root planing is a curette.
Undermining resorption occuring from within marrow spaces towards PD ligament is found
1. Bone covering unerupted tooth
2. Bone due to hormonal changes
3. Due to necrosis of bone on compression side as a result of occlusal trauma
4. All of the above
Pedodontics
Answer: 3
Undermining resorption occurs due to necrosis of bone on the compression side as a result of occlusal trauma.
While sharpening curettes and sickles, the internal angle of ............... must be preserved between the face and lateral surface
1. 50-60
2. 60-70
3. 70-80
4. 80-90
Pedodontics
Answer: 3
While sharpening curettes and sickles, the internal angle of 70-80 degrees must be preserved between the face and lateral surface.
The sickle scaler which is suited for mandibular anterior interproximal area is
1. U 15/30
2. Morse
3. Jacquettee
4. Ball sickles
Pedodontics
Answer: 2
The Morse sickle scaler is suited for the mandibular anterior interproximal area.
An Ellis Class IV crown fracture
1. does not involve the pulp
2. is so extensive that the entire crown has been lost
3. involves only the enamel
4. may expose the pulp
Pedodontics
Answer: 2
An Ellis Class IV crown fracture is characterized by the loss of a significant portion of the crown, often such that the pulp may be exposed. This severe type of fracture requires immediate attention to prevent further damage to the tooth
Ellis Class IV fractures are the most severe form of crown fractures. They extend below the gingival margin and involve the enamel, dentin, and often the pulp. The pulp may be exposed, making it a dental emergency.
Clinical changes that may be apparent after scaling and root planning
1. Gain in attachment and reduction of pocket depth
2. Reduction in inflammation and pocket depth
3. Both A and B
4. None of A and B
Pedodontics
Answer: 2
Reduction in inflammation and pocket depth is a clinical change that may be apparent after scaling and root planing.