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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 applicatio...

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.

What is Fluoride bomb?

# The ‘FLUORIDE BOMBS’ is related to: A. A fluoride  capsule with high ppm of fluoride varnish B. A hypoplastic lesion on tooth seen in fluorosis areas C. Undiagnosed hidden caries D. Procedure to treat rampant caries The correct answer is C. Undiagnosed hidden caries. Occult or hidden caries is used to describe such lesion which is not clinically diagnosed but detected only on radiographs. Occult lesions are seen with low caries rate which is suggestive of increased fluoride exposure. It is believed that increased fluoride exposure encourages remineralization and slows down the progress of the caries in the pit and fissure enamel while the cavitation continues in dentin, and the lesions become masked by a relatively intact enamel surface. These hidden lesions are called 'fluoride bombs' or fluoride syndrome.

# Calcium hydroxide is advocated as an inter appointment intracanal medication because of

# Calcium hydroxide is advocated as an inter appointment intracanal medication because of: A. Its ability to dissolve necrotic tissue B. Its antimicrobial property C. Its ability to stimulate hard tissue formation D. Its powerful bleaching effect The correct  answer is B. Its antimicrobial property.  Most studies report culture reversals during the interappointment period when active antibacterial dressing is not used in the root-canal system between appointments. The reversals are due to regrowth of residual bacteria or recontamination by bacterial leakage around the access cavity dressing.  Classical and well-controlled studies (Sundqvist’s group) evaluated the effect of various root-canal treatment procedures on the microbiota both qualitatively and quantitatively. They tested the effect of mechanical preparation, saline or sodium hypochlorite irrigation (0.5%, 5.0%, 5.0% with EDTA), the addition of ultrasonic activation to the irrigation and calc...

Initial dissolution of Tooth Substance by Acid

# In the carious process, the initial dissolution of the tooth substance by acid takes place in which of the following place? A. Below the dentin Surface B. Below the enamel surface C. On the enamel surface D. Towards the dentin The correct answer is B. Below the Enamel Surface. The top portion of the tooth remains intact and it's the subsurface which looses the minerals. This is the stage where it's called as incipient lesion. Once the top protion breaks, it's called a cavitated lesion.