Premolars

• Mandibular Second Permanent Right Premolar

  
  

  how many roots does the tooth have?

  one root that tends to bend distally

  
• Mandibular Second Permanent Right Premolar

  
  

  describe the occlusal surface of the Mandibular Second Permanent Right Premolar


  - occlusal rounded square shape

  - long fissure pattern running from mesial to distal

  
• Mandibular Second Permanent Right Premolar

  
  

  describe the lingual (facing tongue) surface of the Mandibular Second Permanent Right Premolar

  - Mesio lingual cusp taller and larger

  - Disto lingual cusp shorter and smaller

  - Single lingual cusp displaced mesially

  
  

  - Lingual cusp is up right & over hangs the root to allow space for the tongue

  
• Mandibular Second Permanent Right Premolar

  
  

  describe the buccal (facing cheek) surface of the Mandibular Second Permanent Right Premolar

  - Mesial slope short

  - Distal slope long

  - buccal cusp tilts lingually

  
• Mandibular Second Permanent Right Premolar

  
  

  how many cusps does the tooth have?

  2 or 3: one buccal cusp and one or two lingual cusps

  
• Mandibular Second Permanent Right Premolar

  
  

  Where is the Mandibular Second Permanent Right Premolar in relation to the other teeth?

  - 5th closest to the midline

  - have the first premolars on the mesial side

  - have the 1st molars on the distal side

  - right and left hand side of dental arch

  
• Mandibular Second Permanent Right Premolar

  
  

  How to chart Mandibular First Permanent Right Premolar?

  zsigmondy system/palmer notation: 5_|

  FDI system: 45_|

  Universal system: 29_|

  
• Mandibular First Permanent Right Premolar

  
  

  compare the mandibular second premolar to the first premolar


  crown is smaller on first premolar than second premolar

  - the mandibular first premolar is the smallest premolar

  
• Mandibular First Permanent Right Premolar

  
  

  how many roots does the tooth have?

  one long root that curves distally and is flattened from mesial to distal

  
• Mandibular First Permanent Right Premolar

  
  

  describe the occlusal surface of the Mandibular First Permanent Right Premolar

  - rounded square in shape

  - 2 occlusal fossae- distal larger than mesial

  
• Mandibular First Permanent Right Premolar

  
  

  describe the lingual (facing tongue) surface of the Mandibular First Permanent Right Premolar


  - lingual cusp tip is mesial and it overhangs the root to accommodate the tongue

  - lingual cusp is shorter than buccal cusp

  
• Mandibular First Permanent Right Premolar

  
  

  describe the buccal (facing cheek) surface of the Mandibular First Permanent Right Premolar

  - mesial slope is shorter than distal

  - buccal cusp is large and convex and it tilts lingually

  
• Mandibular First Permanent Right Premolar

  
  

  how many cusps does the tooth have?

  2 cusps- one buccal and one lingual

  
• Mandibular First Permanent Right Premolar

  
  

  Where is the Mandibular First Permanent Right Premolar in relation to the other teeth?

  - 4th closest to the midline

  - has the canines on the mesial side

  - has the 2nd premolars on the distal side

  - right and left hand side of dental arch

  
• Mandibular First Permanent Right Premolar

  
  

  How to chart Mandibular First Permanent Right Premolar?

  zsigmondy system/palmer notation: 4_|

  FDI system: 44_|

  Universal system: 28_|

  
• Maxillary Second Permanent Right Premolar

  
  

  compare the Maxillary Second Permanent Right Premolar with the Maxillary first Permanent Right Premolar

  - similar in shape

  - 2nd premolar is smaller, the cusps are less acute, and the sides are not concave so the tooth is rounded

  - 2nd premolars crown is smaller and more rounded

  
• Maxillary Second Permanent Right Premolar

  
  

  how many roots does the tooth have?

  one root that bends distally

  
• Maxillary Second Permanent Right Premolar

  
  

  describe the occlusal surface of the Maxillary second Permanent Right Premolar

  - fissure does not extend over mesial marginal ridge

  - palatal cusp tip is mesial

  
• Maxillary Second Permanent Right Premolar

  
  

  describe the mesial surface of the Maxillary second Permanent Right Premolar

  - no canine fossa

  - small groove on mesial ridge

  
• Maxillary Second Permanent Right Premolar

  
  

  describe the buccal (facing cheek) surface of the Maxillary second Permanent Right Premolar

  Buccal cusp mesial slope is short and the distal slope , long

  
• Maxillary Second Permanent Right Premolar

  
  

  how many cusps does the tooth have?

  2 cusps; 1 buccal and 1 palatal

  
  

  - palatal cusp is narrower than buccal cusp

  
• Maxillary Second Permanent Right Premolar

  
  

  Where is the Maxillary First Permanent Right Premolar in relation to the other teeth?

  - 5th closest to midline

  - has first premolars on mesial side

  - has first molars on distal side

  -right and left hand side of dental arch

  
• Maxillary Second Permanent Right Premolar

  
  

  How to chart Maxillary Second Permanent Right Premolar?

  zsigmondy system/palmer notation: 5_|

  FDI system: 15_|

  Universal system: 4_|

  
• Maxillary First Permanent Right Premolar

  
  

  how many roots does the tooth have?

  usually 2 roots; buccal and palatal

  
  

  - the two roots can be fused into a single root and it will be grooved on both the mesial and distal surfaces.

  
• Maxillary First Permanent Right Premolar

  
  

  describe the occlusal surface of the Maxillary First Permanent Right Premolar

  - oval shaped

  - deep fissure running from the mesial to the distal and onto the mesial marginal ridge- canine groove

  
• Maxillary First Permanent Right Premolar

  
  

  describe the mesial surface of the Maxillary First Permanent Right Premolar

  there is the canine fossa ( a depression that the canine fits into)

  
• Maxillary First Permanent Right Premolar

  
  

  describe the buccal (facing cheek) surface of the Maxillary First Permanent Right Premolar


  - the mesial slope of the buccal cusp is longer than the distal

  - concave at the marginal ridge and mesial and distal

  
• Maxillary First Permanent Right Premolar

  
  

  how many cusps does the tooth have?

  2 cusps (bicuspid tooth): buccal cusp and palatal cusp

  
  

  -the buccal cusp is larger

  - palatal cusp is narrower and shorter (buccal is wider)

  
• Maxillary First Permanent Right Premolar

  
  

  Where is the Maxillary First Permanent Right Premolar in relation to the other teeth?

  - 4th closest to the midline

  - has the canines to the mesial

  - has the second premolars to the distal

  -right and left hand side of dental arch

  
• Maxillary First Permanent Right Premolar

  
  

  How to chart Maxillary First Permanent Right Premolar?

  zsigmondy system/palmer notation: 4_|

  FDI system: 14_|

  Universal system: 5_|