Biology

Dental and Oral Biology

967 Questions

Dental and Oral Biology focuses on the structure, development, and function of teeth and oral tissues. It covers key concepts like dental formulas, tooth eruption, and common oral diseases. These topics are essential for medical and biology entrance examinations.

Dental formulaTooth anatomyMilk teethOral diseasesTooth decay

Dental and Oral Biology Questions

Multiple choice evs structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth

  1. Canine

  2. Premolars

  3. Molars

  4. Incisors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 20 primary teeth which are lost as the child grows and is replaced by 32 permanent teeth. Primary dentition comprises of 8 incisors, 4 canines and 8 molars while permanent teeth comprises of 8 premolars in addition to newly formed 8 incisors, 4 canines and 12 molars. Premolars take the place of molars present in the primary dentition.

Multiple choice evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

Identify the function of teeth.

  1. Chewing of food

  2. Mixing of saliva with food

  3. Swallowing of food

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The function of teeth is chewing of food. It chewing is an important step in direction because it helps to break down the food mechanically, and thus increase the surface area for saliva to do its work.

So the correct answer is 'Chewing of food'. 

Multiple choice evs bones joints in the human body our skeletal system and the skin joints

Typical characteristic of thecodont teeth is ________ joint.

  1. Gomphosis

  2. Syndesmoses

  3. Amphiarthrosis

  4. Synchondroses
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thecodont teeth are anchored in sockets within the jawbone. This specific type of fibrous joint, where a peg fits into a socket, is known as a gomphosis.

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

Mark the incorrect statement

  1. Bacteria also grow on food particles that may be lodged between our teeth

  2. Acids produced by these bacteria corrode the tooth enamel and cause cavities

  3. Many microbes grow in water bodies and increase their oxygen level

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Many micro - organisms grow water bodies and decrease their oxygen level. This is harmful to the other organisms living in those water bodies.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Select in incorrect statement :
a) alimentary canal begins with an anterior cavity called buccal cavity.
b) tooth is embedded in a socket of mandible bone only 
c) human shows strict diphyodont type of dentition .
d) oesophagus and the trachea open into the phatynx 

  1. a, b , c & d

  2. a, b & c

  3. a, c & d

  4. a, b & d
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Alimentary canal is also called as digestive tract. It starts in the mouth followed by buccal cavity and ends at the anus. The digestion starts in the anterior cavity called buccal cavity. Teeth are embedded in a socket of mandible (lower jaw) and maxilla (upper jaw). These sockets are called as tooth sockets. Human shows both diphyodont and monophyodont types of dentition. In diphyodont dentition, there are 2 sets of teeth, namely deciduous and permanent set. In monophyodont dentition, there is only 1 set of teeth. In humans, molar teeth show monophyodont dentition and rest teeth show diphyodont dentition. Pharynx is part of both digestive and respiratory system. Pharynx opens into oesophagus in digestive system and larynx in respiratory system. 

Thus, the correct answer is 'a, b , c & d.'

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Which of the following statement is incorrect?

  1. Fangs are certain specialised teeth attached to maxillary bones in poisonous snakes.

  2. Niacin is also known as pellagra preventing vitamin

  3. Choleretic are substances which increases secretion of HCl from stomach

  4. Hormone villikinin is released from intestinal villi
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A. Fangs are certain specialised teeth attached to maxillary bones in poisonous snakes. – true

B. Niacin is also known as pellagra preventing vitamin – true.

C. Choleretic are substances which increases secretion of HCl from stomach – false, because,Choleretics are substances that increase the volume of secretion of bile from the liver as well as the amount of solids secreted.

D. Hormone villikinin is released from intestinal villi- true

So, the correct option is 'chloretics are substances which increases secretion of HCl from stomach'.

Multiple choice chemistry chemistry of non-metals physical properties of non-metals uses of metals and non metals physical properties of metals and non-metals

Which of the following is/are true regarding uses of silver?

  1. Silver leaves are used in filling teeth.

  2. Silver amalgam is used in Ayurvedic and Yunani medicines.

  3. Silver is used in silver plating.

  4. It is used in the preparation of silver salts used in silvering of mirrors, photography and medicine.
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

The following are true regarding uses of silver.
Silver amalgam is used in filling teeth.
Silver leaves are used in Ayurvedic and Yunani medicines.
Silver is used in silver plating.
It is used in the preparation of silver salts used in silvering of mirrors, photography and medicine.

Multiple choice

My tooth never hurts me badly, ___________________?

  1. has it

  2. doesn't it

  3. does it

  4. is it
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a tag question. Since the main clause 'My tooth never hurts me badly' is negative due to 'never', the tag must be positive. 'Does it' is the correct form.

Multiple choice

How many molar teeth are present in our mouth ?

  1. 12

  2. 8

  3. 4

  4. 8
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An adult human has a total of 12 molar teeth, with 3 molars located in each of the four quadrants of the mouth (upper left, upper right, lower left, and lower right), which includes the four wisdom teeth.

Multiple choice bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

Which part of the body contains teeth?

  1. Buccal cavity

  2. Body cavity

  3. Both A and B

  4. Tooth cavity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The mouth leads to the buccal cavity or oral cavity. The oral cavity has a number of teeth and a muscular tongue. Teeth help in mastication of food when tongue helps in mixing of food with saliva.

So the correct answer is 'Buccal cavity'.

Multiple choice bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

In the buccal cavity, food is broken down by the teeth of

  1. Upper jaw only

  2. Lower jaw only

  3. Both A and B

  4. Tongue
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The tongue is a muscular structure that cannot break down food. The food is broken down by the teeth of the upper jaw and lower jaw. Teeth is a hard part of the mouth that has a hard chewing surface covering made up of an enamel which helps in the mastication of food.

So the correct answer is 'Both A and B'.

Multiple choice

What is the role of salivary calcium and phosphate ions in saliva?

  1. Digestion of carbohydrates

  2. Neutralization of acids

  3. Remineralization of teeth

  4. Lubrication of the oral cavity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Salivary calcium and phosphate ions play a crucial role in the remineralization of teeth, helping to repair and strengthen tooth enamel.