MDS PREP
The major growth sites in mandible are:
1.Anterior surface of ramus
2.Condylar process
3.Anterior part of chin
4. Posterior surface of ramus:
1) 1,2,3
2) 2,4
3) 2,3,4
4) 2,3
Pedodontics Answer: 2
•In two ways the overall pattern of growth of the mandible can be represented .It will depend on the frame of reference if both are correct. The chin moves downward and forward if the cranium is the reference area.
On the other hand, it becomes apparent that the principal sites of growth of the mandible are the posterior surface of the ramus and the condylar and coronoid processes if data from vital staining experiments are examined. Along the anterior part of the mandible there is little change
• The chin is almost inactive as a growth site. As the actual growth occurs at the mandibular condyle and along the posterior surface of the ramus it is translated downward and forward. By periosteal apposition of bone on its posterior surface the body of the mandible grows longer , at the condyle accompanied by surface remodeling while the ramus grows higher by endochondral replacement
• Conceptually,wiht is correct to view the mandible as being translated downward and forward,though at the same time it increases in size by growing upward and backward. As the bone moves downward the translation occurs largely. As the bone moves downward and forward along with the soft tissues in which it is embedded the translation occurs largely
The most important modification of amalgam restorations on primary teeth
1) Rubber dam application
2) Cavity preparation
3) Placement of matrix band
4) Use of zinc free alloy
Pedodontics
Answer: 2
The most important modification of amalgam restorations on primary teeth is cavity preparation (Answer: 2). Unlike permanent teeth, primary teeth have a thinner enamel layer and a larger pulp chamber relative to their size. Therefore, the cavity preparation must be done with caution to avoid pulp exposure and ensure the longevity of the restoration.
The primary advantage of external splint compared to internal splint
1. Improved esthetics
2. Increased rigidity to occlusal forces
3. Conservation of tooth structure
4. All of the above
Pedodontics
Answer: 3
The primary advantage of an external splint compared to an internal splint is conservation of tooth structure.
The existence of a 2 mm diastema between the fully erupted maxillary permanent central incisors of a 7 year old
child may be attributed to
1. a prominent anterior nasal spine
2 a broad nasal septum
3 failure of fusion of the premaxillae
4. the normal eruption pattern of these teeth
Pedodontics
Answer: 4
A diastema, or space between teeth, can be a normal finding in children, especially during the mixed dentition phase. The presence of a 2 mm diastema between the maxillary central incisors in a 7-year-old is often due to the normal eruption pattern of these teeth, as they may not yet be fully aligned or spaced appropriately.
Which of the following is most appropriate for pseudo pocket
1. Is a feature of periodontitis
2. Is associated with attachement loss
3. Is associated with trans-septal fibres loss
4. May have a depth of more than 3 mm
Pedodontics
Answer: 4
A pseudo pocket may have a depth of more than 3 mm.
Injuries to primary teeth occur mostly at
1) 6-12 months
2) 3-4 years
3) 5-6 years
4) 1.5-2.5 years
Pedodontics
Answer: 4
Injuries to primary teeth are most common in children aged 1.5 to 2.5 years, as this is a developmental stage where children are learning to walk and explore their environment, leading to a higher risk of falls and accidents.
Band and loop space maintainer is a
1) Passive appliance
2) Active appliance
3) Both of the above
4) None of the above
Pedodontics
Answer: 1
A band and loop space maintainer is a passive appliance used in pediatric dentistry to maintain space for a permanent tooth when a primary tooth is lost prematurely. It does not exert any active forces on the teeth, hence categorized as a passive appliance.
Furcation is best detected by which probe
1. WHO probe
2. University of Michigan "O" probe
3. Marquis color coded probe
4. Naber"s probe
Pedodontics
Answer: 4
Furcation is best detected by Naber's probe.