Moth eaten appearance is seen in all except:

# Moth eaten appearance is seen in all except:
A. Osteomyelitis
B. Hemorrhagic cyst
C. OKC
D. Osteosarcoma

The correct answer is C. OKC

'Moth eaten appearance' is seen in lesions of bone which shows lytic activity. 

Seen in:

- Osteomyelitis - Acute suppurative and chronic both

- Osteosarcoma

- Osteoradionecrosis

- Ewing Sarcoma

- Langerhans cell histiocytosis

- Hemorrhagic cyst

Radiolucency between maxillary central incisors

# A radiolucency seen between the maxillary central incisors is most commonly due to:
A. Periapical cyst
B. Nasopalatine cyst
C. Globulomaxillary cyst
D. Nasoalveolar cyst

The correct answer is B. Nasopalatine cyst

Nasopalatine cyst (Incisive canal cyst) - Most common fissural cyst, usually asymptomatic, may complain of tender swelling of palate. Radiographic characteristics- well demarcated round, oval or heart shaped radiolucency between and above maxillary central incisors; rarely just lateral to the midline; lesion crosses midline, teeth are vital. 

Dentin Desensitizing Agent

# The dentin desensitizing agents that acts by precipitating proteins in dentinal tubular fluid is: (MHCET 2014)
A. Strontium chloride
B. Potassium oxalate
C. Fluoride
D. Hydroxyethyl methacrylate

The correct answer is A. Strontium chloride.

After professional diagnosis, dentinal hypersensitivity can be treated simply and inexpensively by home use of desensitizing dentifrices.

Strontium Chloride Dentifrices

Ten percent strontium chloride desensitizing dentifrices are found effective in relieving the pain of tooth hypersensitivity.

Potassium Nitrate Dentifrices

Five percent potassium nitrate dentifrices are found to alleviate pain related to tooth hypersensitivity.

Fluoride Dentifrices

Sodium monofluorophosphates dentifrices are effective mode of treating tooth hypersensitivity.

Strontium chloride is the most important constituent in home care dentifrices intended to be used for the treatment of dentinal hypersensitivity. Topical application of concentrated strontium chloride on an abraded dentin produces a deposit of strontium that penetrates dentin to a depth of approximately 10-20 micrometers and extend into dentinal tubules. 

Ref: Textbook of OPERATIVE DENTISTRY, Nisha Garg, 3rd Edition, Page 445

Direct Pulp Capping

# Which of the following are true about direct pulp capping?
A. Mechanically exposed teeth have a greater success rate than carious exposures
B. Final restorative materials do not affect success
C. Generally, individual teeth involved in a fixed prosthesis are candidates for direct pulp capping
D. All of the above

The correct answer is A.  Mechanically exposed teeth have greater success rate than carious exposures.