Eicosapentaenoic acid (EPA) is present in:

 # Eicosapentaenoic acid (EPA) is present in:

A. Soyabean oil

B. Corn oil

C. Sunflower oil

D. Fish oil

The correct answer is D. Fish oil.

Eicosapentaenoic acid (EPA) is one of several omega-3 fatty acids. It is found in cold-water fatty fish, such as salmon. It is also found in fish oil supplements, along with docosahexaenoic acid (DHA). Omega-3 fatty acids are part of a healthy diet that helps lower risk of heart disease.

Which of the following cements have highest water solubility?

 # Which of the following cements have highest water solubility? 

A. Zinc phosphate 

B. Zinc oxide eugenol 

C. Zinc silicophosphate 

D. Zinc polycarboxylate 

The correct answer is C. Zinc silicophosphate.

Of the given choices, ZOE cements have the highest solubility in oral environment. But, water solubility of ZOE is less while that of silicophosphate is quite high. The oral solubility is different from water solubility. This is because the oral environment is mildly acidic while the water is neutral. Thus, in oral environment, ZOE has maximum solubility while in water, silicophosphate has maximum water solubility.

Tumor suppressor gene in head and neck cancer is:

 # Tumor suppressor gene in head and neck cancer is: 

A. Erb-b 

B. C-myc 

C. Bcl 

D. p16INK4A 

The correct answer is D. p16INK4A.

Tumor suppressor genes have been associated with sites of chromosome abnormalities where loss of genetic nucleic segments has been reported to commonly involve chromosome arms 3p, 4q, 8p, 9p, 11q, 13q, and 17p. TSGs involved in HNSCC are P53, Rb (retinoblastoma), and p16INK4A. Other candidates include FHIT (fragile histidine triad), APC (adenomatous polyposis coli), DOC1 VHL (gene for von Hippel‐Lindau syndrome), and TGF‐R‐II (gene for transforming growth factor type II receptor).

Ref: Burket's Oral Medicine, 13th Edition.

Non scrappable white papules intermixed with areas of erythema and erosion most likely falls under:

 # Non scrappable white papules intermixed with areas of erythema and erosion most likely falls under: 

A. Candidiasis 

B. Erythroleukoplakia 

C. Leukoplakia 

D. Erythroplakia 

The correct answer is B. Erythroleukoplakia.

The term 'non homogeneous' is ascribed to lesions with two different features, usually having both red and white areas, but also to all those without redness but containing verruciform exophytic elements. Due to the combined appearance of white and red areas, the nonhomogeneous oral leukoplakia has also been called erythroleukoplakia and speckled leucoplakia. The clinical manifestation of the white component may vary from large white verrucous areas to small nodular structures. If the surface texture is homogeneous but contains verrucous, papillary (nodular), or exophytic components, the leukoplakia is also regarded as nonhomogeneous.