Root caries is usually more rapid than other forms of caries and should be detected and treated early.

Ans is B

Ans is B

Ans is A

The earliest evidence of formation of the cranial base is seen in the post or late somitic period (4th-8th week of intra- uterine life). During this late somitic period, mesenchymal tissue derived from the primitive streak, neural crest and occipital sclerotomes condense around the developing brain. A capsule is formed around the brain called ectomenix or ectomeningeal capsule. The basal portion of this capsule gives rise to the future cranial base.

From around the fortieth day onwards, this ectomeningeal capsule is slowly converted into cartilage. This heralds the onset of cranial base formation.

Ans is B

Sterilization is the process that frees nonliving structures from all viable microorganisms whether pathogenic or non-pathogenic including spores.
Disinfection: is defined as the process by which an article, surface, or medium is freed of all microorganisms- Or organisms capable of giving rise to infection but spores escape.
The term antisepsis is used to indicate the prevention of infection, usually by inhibiting the growth of bacteria. Antiseptic is a chemical agent that inhibits or kills microorganisms when applied to living tissue.

Ans is B

A full crown is indicated on tooth with short clinical crowns.
• Porcelain jacket crown is contraindicated in cases where there is minimum overjet.
• Hence the restoration of choice is metal-ceramic crown. It satisfies both aesthetic and strength requirements.
• The choice of restoration of endodontically treated anterior teeth differs from posterior teeth.

Ans is B