Monday, May 14, 2012

KCET -2012

2. Clogging of abrasive wheel with debris, causing reduction of abrasive action is called

a. Blinding
b. buffing
c. dressing
d. truing

ANS - a

Truing is done to improve the concentricity of burs by shaping stone against a rotating instrument. It is a procedure where instrument is run against a harder abrasive block until it rotates without eccentricity. Truing improves cutting efficiency.

Buffing - process of polishing the occlusal surface of cast metal using soft bristle disc and tripoli or Bar buffing compound

Dressing- The shaping of abrasive to correct its size, shape and remove clogged debris, done using a dressing stone.


Blinding -  The process of clogging of an abrasive during work. It reduces efficiency. Dressing is done to remove abrasive blinding.


Grit -  term to describe size of abrasive.

Dont confuse this blinding with blinding techniques in epidemiology...

KCET - MDS - 2012

1. Merkel cells are found in which of the following tissue?
a.epidermis
b. papillary layer of dermis
c. reticular layer of dermis
d. hypodermis

ANS - A
Merkel cells are located in the deeper layers of the epithelium, harbor nerve endings and are connected to other cells by desmosomes, they have been identified as tactile receptors.

Sunday, May 13, 2012

Army dental corps

ARMY DENTAL CORPS 

The maximum age limit to take permanent commission for short service officers  in Army dental corps is changed to 30 yrs