Dental and Oral Biology

Canine teeth are 4 in number.They are very strong, pointed corner teeth for tearing and shredding, placed laterally to each lateral incisor. They are larger and stronger than the incisors. The canine tooth morphology is characterized by the large, conical crown which projects beyond the level of the other teeth and one single root, longer than all other human teeth types.The upper canine teeth are sometimes called eyeteeth.

Each peristome is a ring of triangular "teeth" formed from the remnants of dead cells with thickened cell walls. There are usually 16 such teeth in a single peristome, separate from each other and able to both fold in to cover the stoma as well as fold back to open the stoma.

Molars are the large, flat teeth located at the back of the mouth specifically designed for grinding and chewing food. Incisors are for biting, and canines are for tearing.

Root nodules in leguminous plants contain symbiotic bacteria (like Rhizobium) that fix atmospheric nitrogen into a form usable by plants.

 Teeth protect tongue and ribs protect lungs

Calcium. All the other options make the sentence meaningless and incorrect.

The trigeminal nerve (cranial nerve V) is the primary sensory nerve for the face and jaw. Its mandibular branch is responsible for the sensation in the lower teeth and jaw.

Compound indexing is specifically used for indexing operations that cannot be performed by simple or direct indexing, including odd numbers of teeth.

Dental formula of man is 2123/2123. The formula 2.1.2.3 for upper and lower teeth indicates 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the both upper and lower arches.

Jaw suspension characteristic of mammals is 'craniostylic'; considered it as a modification of autostylic suspension. Upper jaw fuses throughout its length with cranium and hyomandibular forms the ear ossicle stapes. 

The teeth of rabbit are of several types (Heterodont) with roots in sockets of jaw bones (thecodont) and occur in two sets in life (diphyodont).

 Bulk of the tooth in mammals is made up of dentine.It is 70% mineral and acellular, as hydroxyapatite crystals, and 30% organic as water, collagen and mucopolysaccharide.

 Molars are used for grinding and chewing of food.Adult humans have twelve molars, in four groups of three at the back of the mouth.

Pre maxilla

anthropoid