1. JEAN CLAUDE NIYOMUGABO 215007161 CMHS-BDS 3/2016 DENTAL ANATOMY ASSIGNMENT 7 DIFFERENCE BETWEEN MAXILLARY AND MANDIBULAR MOLARS DIFFERENCE BETWEEN MAXILLARY AND MANDIBULAR MOLARS

2. INTRODUCTION Maxillary molars are the molars in the upper jaw while mandibular molars are the molars in the lower jaw. In an adult, there are four types of teeth found in both maxilla and mandible, namely; incisors (8), canine (4), premolars (8), and molars (12). In this article, we mainly focus on the difference between maxillary and mandibular molars

3. INTRODUCTION There are 6 molars in each arch, and three molars on either side of the arch. The crown of the molars has modified into an occlusal (chewing) surface with 3 to 5 cusps. Moreover, the occlusal surfaces of molars are larger than that of other teeth. The main roles of molars include the mastication of food,, and help to keep other teeth in proper alignment. The key difference between them can be observed in their position and the structure.

4. Maxillary Molars Maxillary molars are the 6 molars on maxillary arch. In lingual view, geometric form of these molars is a trapezoid.trapezoid In occlusal view, these teeth are rhomboid with 2 acute and 2 obtuse angles. They have two buccal cups and one buccal groove. The buccal surface is relatively verticle. Maxillary molars have 3 roots with tripod arrangement, which enhance the anchorage in alveolar bone..

5. Maxillary Molars The presence of oblique ridge on the occlusal surface is a characteristic feature of the maxillary molar. The crown of the maxillary molar is more centered over the root

6. Mandibular Molars Mandibular molars are the 6 molars found on mandibular arch. They have 2 roots and have no oblique ridge. In the buccal aspect, geometric form of mandibular molar is trapezoid while in proximal aspects it is rhomboid..

7. Mandibular Molars The mesiodistal width of these teeth is much greater than the crown height. The buccal cups are blunt and often attrited. There are two buccal grooves on the 1 st molar and single buccal groove on 2 nd and 3 rd molar. The buccal cervical ridge of the mandibular molar is more prominent, especially on the 1 st molar

8. The Difference Between Maxillary And Mandibular Molars

9. SubjectMaxillaryMandibular Buccal view 1.Buccal cupsMaxillary molars have two buccal cups two or three buccal cups 2.Buccal groove one buccal groovetwo on the first molar buccal groove. 3.Number of rootsthree roots have two roots 4.Root trunkonger root trunk shorter root trunk.

10. SubjectMaxillaryMandibular Lingual view 5.Cervix of crownCervix of crown tapers more to lingua Cervix of crown tapers less to lingual. 6.Cups of Carabelli is commonly seen on the first molar in maxillary molar. are absent in mandibular molar: Proximal view 7.Crown more centered over root tipped more lingual over root.

11. SubjectMaxillaryMandibular Occlusal view 8.Oblique ridge present. absent. 9.Transverse ridgeonly one Transverse ridge two Transverse ridge 10.Crownsquare shaped.pentagon shaped. 11.Fossaehas four; large central and cigar-shaped distal fossae. three fossae; the central is the largest.

12. Cont’ SubjectMaxillaryMandibular 12.Shape of cusps(mesial aspect) Buccal cusp is sharp Lingual cusp is rounded Buccal cusp is rounded Lingual cusp is sharp 13.Buccal cervical ridge NoYes 14.Developmental groove 64

13. Cont’ SubjectMaxillaryMandibular 15- Shape of occlusal aspect RhomboidalRectangular 16 Crown widthWider Bucco- lingually than mesio- distally Wider mesio- distally than bucco- lingually 17 Functional cusps 45

14. REFERANCE http://www.differencebetween.com/differenc e-between-maxillary-and-vs-mandibular- molars/ http://www.differencebetween.com/differenc e-between-maxillary-and-vs-mandibular- molars/ http://pt.slideshare.net/basimzwain/mandibul ar-molars-33125659/4