3. Premolars 2024.pptx

Premolars Week 4A Prof Q Wessels PhD (Anatomy), PhD (HSE), FHEA  Outcomes o Numbering, position, and eruption time table o Describe the general geometry and characteristics o Provide a detailed description of the tooth from all the aspects (including the root) o Describe...

Premolars Week 4A Prof Q Wessels PhD (Anatomy), PhD (HSE), FHEA  Outcomes o Numbering, position, and eruption time table o Describe the general geometry and characteristics o Provide a detailed description of the tooth from all the aspects (including the root) o Describe any anatomical variation might be present Maxillary  Maxillary Premolar o The premolars succeed the deciduous molars o The maxillary first and second premolars and the mandibular first premolars are developed from four lobes - like the anterior The buccal surface of a maxillary right first teeth premolar o 2 cusps and normally 2 roots  Maxillary Premolar o Lingual cusp is shorter than facial cusp o Tip of the lingual cusp is located slightly toward the mesial side of the midline The lingual surface of a maxillary right first premolar  Maxillary Premolar The mesial surface of a The distal surface of a maxillary right first maxillary right first premolar premolar o Crown similar in appearance to a maxillary canine but: o Crown is shorter and narrower  Maxillary Premolar The hexagonal occlusal surface of a maxillary right first premolar  Maxillary Premolar Maxillary first premolar has two pulp horns, one for each cusp, and two root canals, one for each root (Sometimes only one undivided root is present  Maxillary Premolar A: Mesial view of a maxillary right first premolar demonstrating single root and mesial crown concavity B: Mesial view of a maxillary right second premolar demonstrating single root and no mesial crown concavity The crown and root variations of the maxillary first premolar teeth Nagaş, I. Ç., Eğilmez, F., & Kivanç, B. H. (2018). The Permanent Maxillary and Mandibular Premolar Teeth. InTech. doi: 10.5772/intechopen.79464  First Maxillary Premolars Second mesial developmental depression A, Buccal view; B, lingual view; C, occlusal view; D, mesial view; E, First Maxillary Premolars Second Mandibular  Mandibular Premolar o Mandibular first premolars are longer than second premolars o The mandibular first premolar is the only adult tooth that has a more occlusally located distal than mesial contact o The crown of the mandibular second premolar appears closer to square than the first premolar o Second’s crown is shorter overall, it is Mandibular Premolar Mandibular Premolar First Mandibular Premolar Second  Mandibular Premolar The crown and root variations of the mandibular first premolar teeth. 1, Crown oversized. 2, Crown and root diminutive. 3, Mesial and distal sides of crown straight; cervix wide mesiodistally; root extra long. 4, Unusual formation of lingual portion of crown; root with deep developmental groove mesially. 5, Bifurcated root. 6, Lingual cusp long; little lingual curvature; root of extra length. 7, No lingual cusp; root bifurcated. 8, Dwarfed root. 9, Crown poorly formed; root unusually https://pocketdentistry.com/10-the-permanent-mandibular-pr  Mandibular Premolar Two-cusp type with one buccal and one lingual cusp and a slightly more common three-cusp type with one buccal and two lingual cusps Review Practical Resources Maxillary R Premolar Mandibular R Premolar Questions