Tooth Morphology | Kentucky State University

University:
Kentucky State University
Course:
BIO 301 | Human Anatomy
Academic year:

2022
Views:

231

Pages:

4
Author:

Maverick Martin

Notes: ● Tooth Morphology - Study of the structure and form of teeth ● Eruption / eruption schedule - When the teeth grow and come up into the mouth (Ex. when babies get their teeth, and when baby teeth fall out and adult teeth come in) ● Dentition - Natural teeth in position in the mouth ● Posterior - The very back teeth (Ex. when our t-eeth are actually in our mouths we feel the jaws as being posterior) ○ Posterior teeth have (most of the time) 2 roots and multiple cusps ● Anterior - The front teeth ● Deciduous - Primary / Baby teeth ○ There are 20 deciduous teeth instead of the 32 adult / permanent teeth ○ These teeth stay in a kid’s mouth until the age of 6, and all the rest of the permanent teeth grow in between the ages of 6-17 ● Maxillary Arch - Upper set of teeth, set in the Maxillary bone ○ This arch is fixed to the skull ● Mandibular Arch - Lower set of teeth, set in the Mandibular bone ○ This arch is mobile ○ It is what helps us chew and brings the biting force up towards the maxillary arch ● Both arches have the same number of teeth ● Teeth are designed to ensure proper function and positioning (i.e. teeth are made to chew, and also made to stay in the same position they grew into) ○ Teeth support the teeth beside and on top of / below (in the opposing arch) ○ This ensure that displacement and teeth movement does not occur ● The teeth in the maxillary arch (top arch) slightly overlap with the teeth in the mandibular arch (bottom arch) ○ This happens in proper alignment, sometimes teeth do not align properly (then you need braces and invisalign) ● Adjacent - Next to ○ All teeth adjacent to each other touch (except for the last teeth in both arches) ● Midline - An imaginary vertical line that separates the mouth into four sections ○ This midline is also the line of reflection in a way ○ The right side of the teeth are the same as the left side ● Quadrant - The mouth’s dental arches split into four parts ○ Each quadrant has eight teeth ○ Each quadrant is a mirror image of the quadrant next to it ● ***Quadrants are labeled based on THE PATIENT’S LEFT AND RIGHT ● Deciduous teeth (baby teeth) have 20 teeth, 10 in each arch and 5 in each quadrant ● Other than quadrants, the teeth can also be divided into sextants (sixths)