DAT 118- Ch. 15 Handout

What is dentition?

General arrangement of teeth.

What are the two arches that dentition is divided into?

Maxillary (upper) and mandibular (lower).

What are the arches divided into?

Arches divided in half at the midline of face.

What is the oral cavity divided into?

Quadrants (“quad” meaning 4).

What is Quadrant 1?

Maxillary right.

What is Quadrant 2?

Maxillary left.

What is Quadrant 3?

Mandibular left.

What is Quadrant 4?

Mandibular right.

What are the 2 types of dentition?

Primary dentition- 20 deciduous teeth; Permanent (secondary) dentition- 32 permanent teeth.

How many permanent teeth are in each permanent quadrant?

8 permanent teeth: central incisor, lateral incisor, canine, 1st and 2nd premolar, 1st, 2nd, and 3rd molars.

How many primary teeth are in each primary quadrant?

5 primary teeth: central incisor, lateral incisor, canine, 1st and 2nd molars.

What are succedaneous teeth?

Permanent teeth that replace or succeed the deciduous teeth.

What are nonsuccedaneous teeth?

Permanent molars.

Why are permanent molars nonsuccedaneous teeth?

They do not replace any primary deciduous teeth.

What is mixed dentition?

Dentition that comprises some permanent and primary teeth.

Is mixed dentition only found in children?

No. Some adults may have mixed dentition.

When naming a tooth, what do you list first?

Dentition.

When naming a tooth, what do you list second?

Arch.

When naming a tooth, what do you list third?

Quadrant.

When naming a tooth, what do you list fourth?

Tooth name.

What is an example of naming a tooth?

Permanent maxillary right 1st molar.

What does the Universal System use for permanent teeth?

Arabic numerals 1-32 for permanent teeth.

Where is #1 used in the Universal System?

Most posterior molar on upper right.

How does the Universal System follow the upper arch?

Follows upper arch ending at 16 in left quadrant.

Where does the Universal System go after #16?

Drops to lower left quadrant starting at 17.

How does the Universal System follow the lower arch?

Follows lower arch to right ending at 32.

What does the Universal System use for primary teeth?

Letters A-T for primary teeth.

What format does the Universal System use for primary teeth?

Follows same format as permanent teeth except using letters.

What is given to each quadrant in the Palmer Notation System?

Its own prefix symbol or quadrant bracket.

What does the vertical line represent in the Palmer Notation System?

Midline or division between left and right.

What does the horizontal line represent in the Palmer Notation System?

Division between lower and upper.

How should you view the bracket in the Palmer Notation System?

As if you were looking at a patient, so your right is their left and vice versa.

Which teeth have the lowest number/letter in the Palmer Notation System?

Teeth closest to midline have the lowest number/letter.

What is 1 in the Palmer Notation System?

Permanent central incisor.

What is A in the Palmer Notation System?

Primary central incisor.

How can you remember where a tooth is in the Palmer Notation System?

If the midline bracket is to the left of a number, the tooth is in a left quadrant; if the midline bracket is to the right of a number, the tooth is in the right quadrant.

How is each tooth identified in the FDI System?

Each tooth, whether deciduous or permanent, is given a 2-digit number; no duplicates are used.

What does the 1st digit indicate in the FDI System?

Quadrant and whether the tooth is permanent or deciduous.

What are the permanent teeth numbers in the FDI System?

11 to 48, going in the same direction as Universal.

What are the primary teeth numbers in the FDI System?

55 to 85.