_________ are the smallest microbes.
Bacteria
Protozoa
Viruses
Fungi
The substance beneath the enamel of a tooth.
Dentine
Pulp
Crown
Enamel
________ are the most abundant microbes on the earth.
_________ grow on dead and rotting material.
Virus
Total number of milk teeth in human is _______.
12
22
20
30
The type of tooth which is sharp, pointed, and is made to help tear food.
Incisor
Canine
Molar
Premolar
The first set of teeth in humans and many mammals are called as _________ .
Milk teeth
Permanent teeth
Small teeth
None of these
Which is the soft portion inside the dentine that has blood vessels and nerves?
Root
The substance produced by germs, which harm the enamel is ___________ .
Alkali
Acids
How many permanent teeth does an adult human have?
32
24
