All about becoming a Dentist!
Some Features of the Muscles of Facial Expression are: Subcutaneous Develop from the Mesoderm of the2nd Branchial arch They are supplied by the facial nerve All of them are inserted into the skin The Muscles which lead to various expressions: Smiling and laughing – Zygomaticus Major Sadness – Levator labii superioris, levator angulioris Grief – [...]
Reflex is a highly stereotyped automated response to a specific stimulus Masticatory reflexes are type of stretch reflexes brought about by activation of muscle spindles in the muscles Types of Jaw Reflexes: Jaw Closing Reflex / Jaw Jerk Reflex Jaw Opening Reflex Jaw Unloading Reflex Tooth Contact Reflexes Horizontal Jaw Reflexes Jaw Closing Reflex / [...]
The pathway of mandible during chewing is referred to as chewing cycle. Characterized by opening, closing, retrusive, protrusive & lateral jaw movements The chewing cycle can take many forms; classically tear drop shape when viewed in frontal or saggital plane There are about 15 chews in a series from the time of food entry until [...]
Masticatory Forces are the Forces exerted during mastication with variations in region, persons, age, sex, food habits & race. The muscles of mastication are the main cause for these forces they contract and relax and lead to the production of force for Mastication. It is measured and sometimes termed as Bite force as it is [...]
Human skull has around 20 Sutures which means that the number of bones fusing together to form sutures are 40 and including the number of single bones in the Skull the number of bones in the human Skull during birth are 45 and the number of bones in adulthood are 22 bones. Sutures: Def: Sutures [...]
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