MDS PREP
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.
what %age of NaF is used in iontophoresis:
1.1%
2.2%
3.3%
4.4%
Periodontics
Answer: 2
2% NaF is used in iontophoresis. This fluoride treatments brings about granular precipitation in dentinal tubules and reduces tubular diameter.
Craters in facial and lingual interdental bone are best eliminated by
1) Gingivectomy
2) Osseous reconturing
3) Osseous regeneration procedure
4) Curettage
Periodontics
Answer: 3
Craters in the facial and lingual interdental bone are typically associated with periodontal disease and result from the loss of bone due to inflammation and infection. Osseous regeneration procedures, such as guided bone regeneration (GBR) or the use of bone grafts, are specifically designed to restore lost bone structure. These procedures promote the growth of new bone in the affected areas, effectively filling in the craters and restoring the contour of the alveolar ridge. Gingivectomy and curettage are more focused on soft tissue management and do not address the underlying bone loss, while osseous recontouring may not be as effective in restoring lost bone volume.
Bone graft procedures are most successful in treating
1) Furcation involvements
2) Deep, two-wall craters
3) Narrow three-wall defects
4) None of the above
Periodontics
Answer: 3
Bone graft procedures are most successful in treating narrow three-wall defects. These are defects that extend from the crest of the alveolar bone to the alveolar crest and involve only one surface of the tooth root. The success of a bone graft in such cases is due to the presence of three walls of intact bone that can provide stability and support for the graft material, allowing for predictable and effective regeneration of the missing bone tissue.
A teenaged patient reported complaining of sudden drifting of teeth. Bone loss and pockets were found to be more severe on some teeth when compared to neighboring teeth. The most likely diagnosis is
1. simple periodontitis
2. chronic nonspecific periodontitisv
3. juvenile periodontitis
4. gingivosis
Periodontics
Answer: 3
Juvenile periodontitis (now referred to as localized aggressive periodontitis)
is characterized by localized bone loss and periodontal pockets, often affecting
adolescents and young adults. The sudden drifting of teeth and the severity of
bone loss in specific areas align with this diagnosis.
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
A Gracey curette is correctly adapted when the lower shank is parallel with the tooth surface being scaled.
The alveolar bone
1. contains fibrous bone
2. follows the slope of the adjacent cementoenamel junctions
3. comprises only of red bone marrow
4. regenerates easily after periodontal therapy
Periodontics
Answer: 2
Mineralization of dental plaque normally proceeds from the
1. periphery towards the tooth surface
2. occlusal surface towards the root surface
3. tooth surface towards the surface of the plaque
4. centre of the plaque radially
Periodontics
Answer: 3
This process occurs due to the deposition of minerals, primarily calcium and
phosphate ions, in the presence of organic matrix components and bacteria within
the plaque.
Mineralization in dental plaque often starts at the interface between the tooth
surface and the plaque, where the organic matrix provides a substrate forthe
deposition of mineral ions.
As the process continues, the plaque can become increasingly calcified, with the
mineral content moving from the tooth surface outwards towards the surface of
the plaque.
This can lead to the formation oftartar or dental calculus, which is a hardened
deposit of mineralized plaque that can contribute to dental diseases like
gingivitis and periodontitis.