dental anatomy

Home

Get App

Create

what is the eruption date for the maxillary 1st premolars?

10-11 years
what is the eruption date for the maxillary 2nd premolars?

10-12 years
what is the eruption date for mandibular 1st premolars?

10-12 years
what is the eruption date of the mandibular 2nd premolars?

10-12 years
when is maxillary 1st premolar root completion?

12-13 years
when is maxillary 2nd premolars root completion?

12-14 years
when is mandibular 1st premolars root completion?

12-13years
when is mandibular 2nd premolars root completion?

13-14 years
what are three distinguishing features for the maxillary 1st premolars?
- larger than 2nd
- mesial concavity extends to root
- mesial marginal groove
what are two distinguishing features for the maxillary 2nd premolars?
- buccal and lingual cusps are nearly the same height
- occlusal anatomy is more variable than 1st
what are three distinguishing features for the mandibular 1st premolars
- large buccal cusp; small afunctional lingual cusp
- mesiolingual developmental groove
- well developed marginal ridges
what is one distinguishing feature of the mandibular 2nd premolars..explain
- 2 forms
- 2 cusps-45%
- 3 cusps-55%
what is the crown shape of the maxillary 1st premolar?

hexagon
what is the crown shape of them maxillary 2nd premolars

round/ovoid
what is the crown shape of the mandibular 1st premolars

diamond
what is the crown shape of the mandibular 2nd premolar?
- 2cusp-heart
- 3cusp-square
what are 4 ways to distinguish right from left for the maxillary 1st premolars?
- mesially displaced lingual cusp
- mesial concavity
- mesial marginal groove
- mesial cusp slope is longer than distal cusp slow on buccal cusp
what are 2 was to distinguish right from left on the maxillary 2nd premolars
- lingual cusp displaced toward mesial
- root distally curved
what are three ways to distinguish right from left on the mandibular 1st premolar?
- mesial cusp shorter than distal
- distal margin more rounded
- root curves to distal
what are two ways to distinguish right from left on the mandibular 2nd premolar?
- 2cusp-lingual cusp shifts mesially
- 3cusp-ML cusp larger
how many roots does the maxillary 1st premolar have?

2 roots 80%
how many roots does the maxillary 2nd premolar have?

single rooted
how many roots does the mandibular 1st premolar have?

single rooted
how many roots does the mandibular 2nd premolar have?

single rooted
what is a characteristic of the mandibular 1st premolars root?

distal groove
what are two characteristics of the mandibular 2nd premolars roots?
- proximal root concavities
- blunt apex
what are the clinical considerations for the maxillary 1st and 2nd premolars?

sinusities
what is the clinical consideration for the mandibular 1st premolars?

snake eyes-sillver fillings in deep occlusal fossae
what are the clinical considerations for the mandibular 2nd premolar?

congenitally mission 2nd to the maxillary lateral incisors and 3rd molars

Author

sweetpea281

41824

Card Set

dental anatomy

Description

premolar characteristics

Updated

2010-10-13T04:16:26Z

Show Answers