MDS PREP
Which is not a feature of Adamantinoma?
1) More common in males
2) Soap-bubble appearance on X-ray
3) Uncontrolled local growth
4) Commonest site maxilla
Oral Medicine Answer: 4
Commonest site maxilla
a. Adamantinoma is a rare tumor arising from the diaphysis of the long bone.
b. The most common long bone affected by adamantinoma is TIBIA.
c. In head and neck , the most common bone affected by adamantinoma is MANDIBLE.
d. In mandible, the most common site is the region of 3RD MOLAR.
e. Classic adamantinomas usually occur in patients older than 20 years, whereas
differentiated adamantinomas occur almost exclusively in patients younger than
20 years.
f. In addition, the 2 classifications of adamantinomas have distinct
radiographic and histologic differences.
g. Patients with adamantinomas present with variable signs and symptoms; most
commonly, they report pain and swelling.
h. The tumor is slow growing, and patients may describe discomfort lasting
months to years.
i. Treatment options for adamantinoma are surgical and include either marginal
or en bloc resection.
j. Unfortunately, neither radiation therapy nor chemotherapy has been proven
effective in the treatment of this insidious tumor.
k. The investigation of choice for adamantinoma is CT SCAN which shows cortical
destruction involving the diaphysis of the bone with surrounding periosteal
reaction.
l. On x ray there is a characteristic SOAP BUBBLE appearance.
Which of the following structures is most likely to be damaged when per forming flap surgery on the complete mandibular arch?
1. Mental nerve
2. Attachment of mylohyoid muscle
3. Retromolar pad
4. Attachment of buccinator muscle
Periodontics
Answer: 1
The mental nerve is situated beneath the mandibular arch and is at risk during
flap procedures, especially when flaps are elevated or repositioned in that
area.
The outcome of results of laterally positioned flap depends on
1) Presence of sufficient bone support at donor site
2) Thickness of attached gingiva at donor site
3) Width of attached gingiva at donor site
4) All of the above
Periodontics
Answer: 4
Explanation:The success of a laterally positioned flap in periodontal surgery is influenced by several factors, including the presence of sufficient bone support at the donor site, the thickness of attached gingiva at the donor site, and the width of attached gingiva at the donor site. All these factors contribute to the healing and stability of the flap.
Abbey-Estlander flap is used in the reconstruction of
1) Buccal mucosa
2) Lip
3) Tongue
4) Palate
Oral Surgery
Answer: 2
What is the primary difference between type IIA and type IIB muscle fibers?
1) Presence of myoglobin in type IIA fibers
2) Metabolic profile (oxidative vs glycolytic)
3) Location in the muscle
4) Size of the fibers
Type IIA fibers are oxidative-glycolytic, meaning they have a mix of oxidative and glycolytic metabolism, while type IIB fibers are purely glycolytic, relying on anaerobic metabolism for energy production during high-intensity, short-duration contractions.
Cell mediated immunity in periodontal diseases is demonstrated by
1) Presence of antibodies in crevicular fluid
2) Release of histamine from mast cells
3) Sensitivity of T-lymphocytes to bacterial antigen
4) Phagocytic activity of macrophages
Periodontics
Answer: 3
The axiopulpal depth of the proximal box in class II cavity is
1) 0.2 to 0.8 mm
2) 0.5 to 1 mm
3) 1 to 2 mm
4) 2 to 3 mm
Conservative Dentistry
Answer: 1
Gore Tex membrane is used during reattachment procedures to
1. Prevent osseous regeneration
2. Prevent connective tissue attachment
3. To prevent formation of long junctional epithelium
4. All of the above
Periodontics
Answer: 3
Gore Tex membrane is used during reattachment procedures to prevent the formation of long junctional epithelium.