Did you know that the first process of food digestion occurs in the mouth? The first mechanical digestion stage occurs as food is chewed down by teeth, coupled with chemical digestion by salivary enzymes, and the masticated food then proceeds to the gastrointestinal tract for further digestion. Herein, we will be talking about dentistry basics, from tooth types down to their respective functions. Before that, however, it would be helpful if we first talk about the underlying tooth anatomy.
What Is a Tooth Made Of?
A tooth has three primary structures. These are:
(1)the enamel – hard, mineralized covering of the tooth
(2)the cementum – covers the root of the tooth and helps stabilize tooth anchorage
(3)the dentine – consists majority of the tooth and it has a protective function; susceptible to cavities and decay
(4)the pulp – core of the tooth, containing nerves and blood vessels
Altogether, these structures make up the specific anatomical regions of a tooth. Specifically, the crown and the root are the two basic anatomical parts of the tooth which serve specific functions. The root is the part embedded under the gums which serve as an anchor to the tooth socket of the jaw. Conversely, the crown is the visible part which is covered with enamel and is subject to wear and tear. The crown and the root usually varies in shape and number respectively, depending on the type of tooth it comprises.
Different Types of Teeth According to Functions
(1) the Incisors – these are the front teeth (four on the upper jaw and four on the lower jaw) which usually takes the first bite of food and these are also the ones we see whenever we smile.
(2) the Canines – these are two pairs of sharp teeth and it primarily functions to tear food (especially the ones that are difficult to chew)
(3) the Premolars – found at the each side of the mouth and helps further masticate food
(4) the Molars – act as reserves in any case that a premolar is lost; usually hard to reach when brushing.
These types of teeth appear at different stages of human development. Some of these teeth appear during infancy and slowly but surely, the others follow as a person grows and develops and this explains why numbers vary in a person’s lifetime.
Your Number of Teeth Vary as You Develop
Commonly, adult humans have more in number than children, having 32 permanent ones in a set. This set consists of 12 molars (along with four wisdom teeth), eight premolars, four canines and eight incisors. In contrast, children have a set of teeth consisting of 20 baby teeth, which eventually fall out and gets replaced as they grow. However, it should be noted that proper dental care should is needed regardless if the set of teeth is permanent or deciduous.
Dental Care In a Nutshell
Proper dental care is essential to maximize the functionality of our teeth. Besides its aesthetic value, these also serve as the primary mechanical digesters which help us break down food for our body to process. A tooth has several structures which altogether, forms the two major parts of a tooth, which vary in shape and size. These variations all lead to a person having different types of teeth which serve different roles in chewing. While precursors of these teeth types are present during childhood, completion of a set of teeth usually does not occur until puberty, where a full set of 32 teeth from each type are present.