Classes of teeth , Dentention, WhatsApp Image 2020-12-24 at 3.05.47 PM…
Classes of teeth
6 in the upper arch
6 in lower arch
1-The mastication of food
2-Maintaining vertical dimension of the face
4 in the upper arch and have three roots.
4 in lower arch and have two roots.
4 uppers and
1- cutting food
2 articulating speech
4- support of the lips
2 uppers 2 lowers
In traditional restorative dentistry they are the cornerstones of the dental arch
1- support the lips
2- cutting or shearing of food
3- guideposts in occlusion
Eruption of Maxillary Canine
This self - correcting malocclusion is seen around 8 to 11 years of age
This condition corrects itself after the canines have erupted.
This is called as ugly duckling stage or Broadbent phenomenon.
As the permanent maxillary lateral incisors mesially.This force is transmitted to the central incisors and their roots are also displaced mesially.
Primate spaces also called: Anthropoid- Simian
Mixed to maxillary deciduous canines
Distal to mandibular deciduous canines
Physiological spaces present in between all the teeth
0 to 8 mm (average 4 mm)
1 to 7 mm (average 3 mm)
The importance of the primary teeth
Help in speech
Chewing and eating
Healthy primary teeth allow normal development of the jaw bones and muscles, save space for the permanent teeth, and guide them into place
Decayed primary teeth can cause pain and abscesses, infections, and can spread to the permanent teeth
Permanent dentition :
Permanent molars replace nothing
Permanent molars replace decidouos teeth
Composed of 32 teeth
Half of a dental permanent called: Quadrant
Composed of both
primay and permanent teeth
Permanent teeth start to appear from the age 6 to (12-13)years