complete Introduction to dental anatomy.pptx

detailed intro to dental anatomy which is very important for dental students

1. Introduction to dental anatomy

2. The teeth are arranged in upper and lower arches. Those teeth in the upper arch are termed maxillary , while The teeth in the lower arch are termed mandibular . The imaginary vertical line which divides each arch, as well as the body, into two approximately equal halves, is the midline

3. The two approximately equal portions of each arch divided by the midline are termed quadrants : maxillary (upper) right. maxillary (upper) left. mandibular (lower) right. mandibular (lower) left

4. the right side of the mouth is actually to the left of the viewer, while the left side of the mouth is to the right of the viewer

5. Occlusion: is The manner in which the mandibular teeth contact the maxillary teeth. Mastication: is the process of biting or chewing of food.

6. Classification of Dentitions 1. Deciduous dentition ( primary dentition ): They are so named because they are shed. from about six months to two years of age. Normally there are 20 total deciduous teeth.

7. 2. Permanent dentition : The teeth of the second, or adult dentition. Normally, there are 32 permanent teeth, they erupt from 6-21 years of age. mixed dentition period: The transitional phase when both deciduous and permanent teeth are present.

8. Classification of the Teeth A. Permanent Dentition: 1. Incisors (2): Central and lateral incisors. Their functions in mastication are biting, cutting, incising and shearing. 2. Canine (1): Also named cuspid. cutting, tearing, piercing, and holding 3. Premolars (2): first and second premolars. tearing, holding, and grinding. 4. Molars (3): first, second, and third molars. Grinding.

9. B. Deciduous Dentition: 1. Incisors (2): which are named central and lateral incisors. 2. Canine (I): or cuspid. 3. Molars (2): which are named first and second molars. function similar to their permanent complements

10. Dentition Periods 1. Primary dentition period: That period during which only deciduous teeth are present. from six months to six years of age. Ends with the eruption of the first permanent tooth.

11. 2. Mixed dentition period: That period during which both deciduous and permanent teeth are present. lasts from approximately six years to twelve years of age. ends a round age twelve. with the exfoliation of the last deciduous tooth

12. 3. Permanent dentition: That period when only permanent teeth are present. begins at approximately twelve years of age and continues through the rest of life. Permanent teeth that replace exfoliated deciduous teeth are called succedaneous teeth,

13. All succedaneous teeth are permanent teeth, but all permanent teeth are not succedaneous teeth.

14. General Eruption Pattern

15. Permanent Dentition

16. Numbering Systems Numbering systems in dentistry serve as abbreviations. Instead of writing out the entire name of a tooth, such as permanent maxillary right central incisor , it is much simpler to assign it a number, letter, or symbol,

17. Numbering Systems There are four systems of tooth notation in use: The first two are in common use in the UK The third system is commonly used in Europe. The forth is in common use in the United States.

18. Presentation of Palmer notation of both deciduous and permanent dentitions

19. FDI system for permanent teeth

20. Presentation of universal system of both deciduous and permanent dentitions

21. Glossary Anterior Posterior Apical Bifurcated Buccal Cementum Cingulum Cusp Dentition distal

22. Glossary Anterior Posterior Apical Bifurcated Buccal Cementum Cingulum Cusp Dentition distal Mesial Labial Lingual Quadrant Arch Succedaneous teeth Lateral Proximal Interproximal interdental

23. Any questions ???