MDS PREP
Gypsum bonded investments may not be heated over 1300°F because the
1. thermal expansion is inappropriate for precision castings above 1300°F
2. silica undergoes allotropic modification at 1300°F
3. gypsum breaks down above 1300°F
4. silica breaks down above 1300°F
Dental Material
Answer: 3
Bismuth intoxication is manifested as
1) Pigmentation in areas of inflammation
2) Burtonian line
3) Gingiva
4) Blackish line in mucosa
Oral Pathology
Answer: 1
Most of the values in data spread along the
1) Mean
2) Mode
3) Median
4) Arithmetic mean
Community Dentistry
Answer: 1
Sequence of eruption of primary teeth
1) ABCDE
2) ABDCE
3) ABDEC
4) ABEDC
Orthodontics
Answer: 2
MCQ: The first sensation of bladder filling occurs at approximately:
1) 150 ml
2) 250 ml
3) 450 ml
4) 750 ml
The first sensation of bladder filling occurs at approximately 150 ml, signaling the need to void.
What is the primary hormone responsible for the regulation of calcium homeostasis?
1) Parathyroid hormone (PTH)
2) Calcitonin
3) Vitamin D
4) Thyrocalcitonin
Parathyroid hormone (PTH) is the primary hormone that regulates calcium homeostasis in the body. It is secreted by the parathyroid glands and acts on the kidneys, bones, and intestines to maintain serum calcium levels within a narrow range. While vitamin D and calcitonin also play roles in calcium metabolism, PTH is the major player in this regulatory process.
Which of the following is true reagarding local anaesthesia?
1) They are basic salts of weak acids
2) Not effective in alkaline pH
3) Form salts with acids
4) They are acidic salts of weak bases
Oral Surgery
Answer: 4
What is the water sorption value of poly (methyl methacrylate) according to the provided information?
1) 0.69 mg/cm²
2) 0.85 mg/cm²
3) 1.05 mg/cm²
4) There is no information provided on water sorption value
The text states that poly (methyl methacrylate) has a water sorption value of 0.69 mg/cm², which affects its dimensional stability and physical properties.