Family Friendly & Specialty Dentists in London, UK
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Anatomy and Function
- The mandibular first premolar is located laterally from the mandibular canines and mesial from the mandibular second premolars.
- It has two cusps, with the buccal cusp being large and sharp, and the lingual cusp being small and nonfunctional.
- The function of the mandibular first premolar is similar to that of canines, primarily tearing during chewing.
- There are no deciduous mandibular premolars; the deciduous mandibular molars precede the permanent mandibular premolars.
- The mandibular first premolar resembles a small canine due to its small and nonfunctional lingual cusp.
- The tearing action during mastication is the principal function of the mandibular first premolar.
Notation Systems
- In the universal system, the right mandibular first premolar is designated as 28, and the left one as 21.
- The Palmer notation uses a number and symbol to designate the quadrant; both first premolars would have the number 4, with the right one having the symbol ┐ and the left one having ┌.
- The international notation assigns the right mandibular first premolar as 44 and the left one as 34.
- The terms 'bicuspid' and 'premolar' are synonymous, but bicuspid specifically refers to a tooth with two functional cusps.
- The mandibular first premolar is an example of a premolar with only one functional cusp.
References
- Ash, Major M. and Stanley J. Nelson, 2003. Wheeler's Dental Anatomy, Physiology, and Occlusion. 8th edition.
- The content on mandibular first premolars is available on Wikipedia and can be expanded.
- This article is categorised under types of teeth and human mouth anatomy.
- The article is a stub in the dentistry and musculoskeletal system categories.
- All stub articles are included in a hidden category.
- The Wheelers Dental Anatomy, Physiology, and Occlusion book provides further information on this topic.
Identifiers
- The mandibular first premolar is identified by the FMA code 55803.
- It is an anatomical term used in dental and medical terminology.
- The tooth is marked in red in diagrams to distinguish it from other teeth.
- The premolars are absent in primary teeth; they only exist in permanent dentition.
- The mandibular first premolar is located away from the midline of the face.
Additional Information
- The tooth is part of the human musculoskeletal system.
- The content on mandibular first premolars is available on Wikipedia as a stub.
