How many root canals are in a maxillary second premolar?
Of the 200 studied maxillary second premolars, 64.1% had one root canal at the apex and 35.4% had two root canals at the apex. The average length of these teeth was 21.5 mm, ranging from 15.5 to 28 mm..
What is the anatomy of the maxillary premolars?
The anatomy of a maxillary premolar with three canals, mesio buccal, distobuccal and palatal is similar to the adjacent maxillary molars and they are sometimes referred to as small molars or radiculous3. In a case of three root canals, the buccal orifices are not clearly visible with the mouth mirror..
What is the structure of the maxillary second premolar?
Maxillary second premolar is generally considered to have one root and one canal [2, 3, 6, 14]. In the present study only 13.8% had one root canal end in one apical foramen (type I, Figure 1)..
What is unique about maxillary second premolar?
The maxillary second premolar usually has one root with longitudinal midroot depressions located in the middle third of the mesial and distal root surfaces. However, neither midroot depression on this tooth extends onto the crown. The distal root depression is usually deeper than on the mesial root surface..
The premolar that is found away from the midline of the face, just next to the canine is referred to as the first premolar. The second premolar is found away from the midline of the face, in between the first premolar and first molar. It is sharper, with more prominent cusps. It is rounded and the cusps are smaller.
The second premolars have one root, and their cusps are rounded and small. The right mandibular second premolar is annotated as 29 and the left as 20. The right maxillary second premolar is 4 and the left is 13.
There are no premolars in primary teeth. Anatomy: The mandibular second premolar most commonly has three cusps but can have two as well. The three cusp variety has one large cusp on the buccal with two smaller lingual cusps. The mesiolingual cusp is twice the size of the distolingual cusp.
It is similar to the first premolar but more rounded and has a single longer root, it erupts at 10- 11 years. 1. The crown of the maxillary second premolar is smaller mesiodistally and cervico-occlusally when compared with the maxillary first premolar. It looks more rounded than the crown of the first premolar.
Maxillary second premolars usually have one root with one or two root canals. Vertucci5 reported the occurrence of one canal at the apex in them at 75%, and two canals at apex at 24%. In the same study, Vertucci5 found maxillary second premolars with three canals at apex to be only 1%.
Does the maxillary second premolar have a root?
The maxillary premolar usually has a single root
Following is a summary of the chronology of development and eruption of the maxillary second premolar
The buccal cusp tip is less pointed as compared to the maxillary first premolar
Height of the buccal cusp is also less as compared to the maxillary first premolar
What is the difference between maxillary first premolar and buccal cusp?
Height of the buccal cusp is also less as compared to the maxillary first premolar
The mesiodistal dimension of the crown is less as compared to the maxillary first premolar
The mesiodistal dimensions in the cervical portion of the crown are more as compared to the maxillary first premolar
What is the difference between maxillary first premolar and mesiodistal dimension?
The mesiodistal dimension of the crown is less as compared to the maxillary first premolar
The mesiodistal dimensions in the cervical portion of the crown are more as compared to the maxillary first premolar
Two cuspal slopes descend from the tip of the buccal cusp the mesial and the distal cuspal slopes
The maxillary second premolar has some resemblance with the maxillary first premolar. Two second premolars are present in the maxillary arch one in each quadrant. It assist the permanent maxillary first molars in the grinding function. It is less angular than the maxillary first premolar.The second premolars, both maxillary and mandibular, have cusps less sharp than the others, and their cusps articulate with opposing teeth when the jaws are brought together; this makes them more efficient as grinding teeth, and they function much like the molars, but to a lesser degree.
Dental anatomy of maxillary second premolar
Upper teeth on the sides of the mouth
The maxillary second premolar is one of two teeth located in the upper maxilar, laterally from both the maxillary first premolars of the mouth but mesial from both maxillary first molars. The function of this premolar is similar to that of first molars in regard to grinding being the principal action during mastication, commonly known as chewing. There are two cusps on maxillary second premolars, but both of them are less sharp than those of the maxillary first premolars. There are no deciduous (baby) maxillary premolars. Instead, the teeth that precede the permanent maxillary premolars are the deciduous maxillary molars.
The premolars
Transitional teeth located between the canine and molar teeth
The premolars, also called premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant in the permanent set of teeth, making eight premolars total in the mouth. They have at least two cusps. Premolars can be considered transitional teeth during chewing, or mastication. They have properties of both the canines, that lie anterior and molars that lie posterior, and so food can be transferred from the canines to the premolars and finally to the molars for grinding, instead of directly from the canines to the molars.
