Maxillary premolar roots

Upper 1st premolars - roots. Lower 1st and 2nd premolars (bicuspids) - Just have root. Variability in the number of root canals. Although it usually has two canals, it may rarely have three and this third canal can easily be missed.

The pulp chamber of the maxillary first premolar is significantly wider buccolingually than mesiodistally. Usually, these teeth have two roots with two canals.

Nevertheless, a third root with a third canal has been reported in the literature. Three-rooted maxillary first premolars are uncommon, with an incidence of 0. Mandibular second premolars have been shown to have root canal at the apex in 97. Maxillary Second Premolar Similar to the first premolar in coronal morphology, the second premolar varies mainly in root form. Its crown is narrower in the buccal-palatal dimension and slightly wider in the mesial-distal.

Cams and Skidmore reported that the incidence of maxillary first premolars with three roots , three canals, and three foramina was of the cases studied. The root is considerably shorter than in the canine, and distal curvature is not uncommon. The apical foramen is usually close to the anatomic apex.

If the mesiodistal distance distance is equal to or wider in the root than the crown, expect three roots. Type IV, are Type II, are Type I. The facial ridge is not as prominent as that of the maxillary 1st premolar. Conclusion: The buccal root of the maxillary molars was more commonly protruded into the maxillary sinus. Among the roots of maxillary posterior teeth, mesiobuccal root of first molar and palatal root of second premolar were found in close proximity to the floor of maxillary sinus.

Most maxillary first premolars have two roots (see Figure 9-10) and two pulp canals. When only one root is present, two pulp canals are usually found anyway. The maxillary first premolar has some characteristics common to all posterior teeth. The frequency of two roots is more than in Caucasoids and less than in Mongoloids. The roots maybe completely separate or arise as twin projections from a common mid-trunk.

The function of this premolar is similar to that. The root of a maxillary first premolar may be either single or bifurcated. The bifurcated root form is far more common, but even in the single root form, two root canals are usually present. Maxillary first premolar Typically, this tooth has two roots with two canals. The number of pulp horns corresponds to the number of cusps, which in this case is two.

Three roots with three separate canals. Out of the 1females of the maxillary second premolar had one root and had two roots.

Regarding root canal morphology of the female maxillary second premolar had type I, had type II, and had type IV. The presence of oblique ridge on the occlusal surface is a characteristic feature of the maxillary molar. In the present study only 13.

I am scheduled to have the - Answered by a verified Dentist We use cookies to give you the best possible experience on our website. Occlusal Comparison of 1st and 2nd premolar 30. The upper first premolar has Mesial Marginal Developmental Groove in its mesial aspect. It also has long central groove and no supplement groves on its occlusal surface. Also of the upper premolars have roots.

However, the upper second premolar has no MMDG and many supplemental groves. Root and root canal morphology of third molars in a Jordanian subpopulation. Chapter: Morphology of Teeth and Their Root Canal Systems.

Al-Ghananeem MMF, et al.