Maxillary first molar
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| Human Teeth | |
| Maxillary teeth | |
|---|---|
| |
| Mandibular teeth | |
| |
| Maxillary first molar | |
| |
| Maxillary first molars of permanent and primary teeth marked in red. | |
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The maxillary first molar is the tooth located laterally (away from the midline of the face) from both the maxillary second premolars of the mouth but mesial (toward the midline of the face) from both maxillary second molars. The function of this molar is similar to that of all molars in regard to grinding being the principle action during mastication, commonly known as chewing. There are usually four cusps on maxillary molars, two on the buccal (side nearest the cheek) and two palatal (side nearest the palate). There may also a fifth smaller cusp on the palatal side known as the Cusp of Carabelli. There are great differences between the deciduous (baby) maxillary molars and those of the permanent maxillary molars, even though their function are similar. It is important to note that the permanent maxillary molars are not considered to have any teeth that precede it. Despite being named molars, the deciduous molars are followed by permanent premolars.
In the universal system of notation, the deciduous maxillary first molars are designated by a letter written in uppercase. The right deciduous maxillary first molar is known as "B", and the left one is known as "I". The international notation has a different system of notation. Thus, the right deciduous maxillary first molar is known as "54", and the left one is known as "64".
In the universal system of notation, the permanent maxillary first molars are designated by a number. The right permanent maxillary first molar is known as "3", and the left one is known as "14". In the Palmer notation, a number is used in conjunction with a symbol designating in which quadrant the tooth is found. For this tooth, the left and right first molars would have the same number, "6", but the right one would have the symbol, "┘", underneath it, while the left one would have, "└". The international notation has a different numbering system than the previous two, and the right permanent maxillary first molar is known as "16", and the left one is known as "26".
References
- Ash, Major M.; Nelson, Stanley J. (2003). Wheeler’s Dental Anatomy, Physiology, and Occlusion, 8th ed.
ja:上顎第一大臼歯 sr:Први горњи кутњак
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
