Family Friendly & Specialty Dentists in London, UK
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Location and Function of Mandibular Lateral Incisor
- Mandibular lateral incisor is located distally from both mandibular central incisors and mesially from both mandibular canines.
- Function of mandibular lateral incisor is for shearing or cutting food during mastication.
- Mandibular lateral incisors have no cusps on the teeth.
- The surface area of the tooth used in eating is called an incisal ridge or incisal edge.
- Incisors are commonly known as chewing teeth.
Differences between Deciduous and Permanent Mandibular Lateral Incisors
- There are some minor differences between deciduous (baby) mandibular lateral incisor and permanent mandibular lateral incisor.
- In the universal system of notation, deciduous mandibular lateral incisors are designated by a letter written in uppercase.
- The right deciduous mandibular lateral incisor is known as Q, and the left one is known as N.
- In the international notation, the right deciduous mandibular lateral incisor is known as 82, and the left one is known as 72.
- Permanent mandibular lateral incisors are designated by a number in the universal system of notation.
Notation for Permanent Mandibular Lateral Incisors
- In the universal system of notation, the right permanent mandibular lateral incisor is known as 26, and the left one is known as 23.
- Palmer notation uses a number in conjunction with a symbol designating the quadrant where the tooth is found.
- In Palmer notation, the left and right lateral incisors would have the same number, 2.
- The right one would have the symbol, ┐, over it, while the left one would have, ┌.
- The international notation has a different numbering system, and the right permanent mandibular lateral incisor is known as 42, and the left one is known as 32.
Anatomical Terminology
- The mandibular lateral incisor is identified by the FMA code 290197.
- Anatomical terminology is used to describe the location and characteristics of the tooth.
- The mandibular lateral incisor is marked in red in diagrams of both permanent and primary teeth.
- The term 'distally' refers to being away from the midline of the face.
- The term 'mesially' refers to being toward the midline of the face.
References
- Ash, Major M. and Stanley J. Nelson, 2003. Wheelers Dental Anatomy, Physiology, and Occlusion. 8th edition.
