Oral Anatomy Chapter 2 Flashcards
Fill in blanks
Is the cementum thicker on the permanent or primary teeth?
Permanent.
In the fetal skull, which is larger the mandible or maxilla?
Mandible.
As a review, what is the basic eruption pattern for primary teeth?
Central incisor, lateral incisor, first molar, canine, second molar.
At what age has all 8 primary incisors erupted?
Around 13-16 months.
When does the mixed dentition start?
With the emergence of the mandibular 1st permanent molar.
What are the maxillary and mandibular permanent molars not considered sucedaneous?
Because they come in posterior to the primary teeth and do not replace them.
When will permanent teeth begin eruptive movement?
Once the crown has fully formed.
Where are the follicles of the developing incisors and canines located?
Lingual to the deciduos roots.
Where are the follicles of the developing premolars?
In the bifurcation of deciduous roots.
Why are primary teeth usually more sensitive than in the permanent teeth?
Because the pulp chamber is usually larger and extends further into the crown.
What are the 4 types of cementoenamel junction and which is the most concerning?
1- Enamel overlaps the cementum. 2- The enamel and cementum meet end to end. 3- The cementum over laps the enamel. 4- There is a small space between the enamel and cementum. The one that are the most concerning is when there is a gap becaues there can be increase risk to caries and when the enamel overlaps the cementum because periodontal ligament cannot attach.
What is one of the antibiotics that can be harmful to teeth?
Tetracycline that causes green, yellow or brown teeth.
What is the difference in size patterns seen between the maxillary and mandibular incisors?
The maxillary central is larger than the lateral while the mandibular later is larger than the central.
Where do the ridges fall on a bisecting line of the root on the mandibuar incisors?
They would be lingual to a root bisecting line.
