MDA 12th Ed. MOD-A week 2
- 1. Mod A Week 2
- 2. DISCUSSION GUIDE MODULE – A WEEK II 1. What is Enamel? 2. What is Dentin? 3. What is Pulp? Describe the pulp. 4. What is Cementum? 5. What is apical foramen? 6. What is alveolar bone and its function? 7. What are the functions of the periodontal ligament? 8. What are the characteristics of the gingiva?
- 3. DISCUSSION GUIDE MODULE – A WEEK II 9. Describe/locate the different surfaces of the teeth. Mesial, distal, facial/labial, lingual, buccal 10. What are the functions of the teeth? 11. Identify the permanent teeth 12. Identify the deciduous teeth and eruption age 13. GV Black Cavity Classification 14. Identify the anterior teeth 15. Identify the posterior teeth 16. What is anatomical crown? 17. What is clinical crown?
- 4. DISCUSSION GUIDE MODULE – A WEEK II 18. What is universal tooth numbering? 19. Identify which one is geometric and anatomical chart 20. Identify and describe all the tissue forming cells 21. Characteristics of maxillary 2nd bicuspid END
- 5. Week 2 Histology / Morphology Lectures week 2 O Tissues of a Tooth O Deciduous and Permanent Dentition O Eruption Patterns O Landmarks of the Teeth O Cavity Classification O Charting O Oral Exam / Mouth Mirror Inspection
- 6. TOOTH / TEETH/DENTITION Term used to describe the natural teeth in the jawbones 3 dentition periods: Primary/Deciduous(20 teeth/baby teeth) Mixed (6-8yo./1st perm molar erupts) Permanent/Adult/Succedaneous (32 teeth)
- 7. DENTITION/TEETH/TOOTH FUNCTIONS O Mastication O Esthetics O Influence Facial Structure O Aid in Speech Q10
- 8. Tissues of a Tooth week 2 lecture 1 The human tooth is made of several layers of tissue and is held into the socket by bone.
- 10. A. ANATOMICAL CROWN: Portion of the tooth that is covered by the enamel. B. CLINICAL CROWN: Portion of the tooth visible in the mouth. ANATOMY OF A TOOTH Q16, Q17
- 11. Enamel O Hardest calcified tissue of the body O Makes up the anatomical crown of the tooth Q1
- 12. Dentin O Makes up the bulk of the tooth O It is covered by enamel on the crown and by cementum on the root Q2
- 13. Pulp O Located in the pulp chamber and canals O Made up of blood vessels and nerves that enter the pulp chamber through the apical foramen. O Very sensitive to trauma O Non-vital when no longer functioning O Will continue the process of forming dentin for the life of the pulp. Canal: Hollow chamber found in the root portion of a tooth. Allows us to feel pain Q3
- 14. The Dental Pulp
- 15. Cementum O Bonelike, rigid connective tissue that covers the root of the tooth o Attachment o Compensation o Growth Q4
- 16. Alveolar Bone/Alveolar Process Extensions of bone from the body of the mandible and the maxilla which supports the teeth in their functional positions in the jaws. Q6
- 17. Root Apical Foramen Portion of the tooth that is embedded into the alveolar process. Natural opening in the root portion of a tooth. Q5
- 18. FUNCTION: Periodontal Ligament Supportive & Protective – holds and cushions the tooth in socket Sensory – “Sense of touch”. Nerve supply Nutritive - supplies nutrients through the blood vessels Formative and resorptive– replaces tissue by the cells present. Continuous and rapid remodeling. Q7
- 19. Gingiva Characteristics: Surrounds teeth like a collar Self cleansing Firm and resistant Tightly adapted to tooth and bone Stippled – resembles the rind of an orange (Attached gingiva and interdental papillae) Color: varies according to the individual’s pigmentation Q8
- 20. Mucosa O Lining Mucosa- covers the oral cavity O Masticatory Mucosa-covers hard palate, top of the tongue, alveolar process
- 21. Tissue forming cells Ameloblasts: forms the enamel Odontoblasts: forms the dentin Cementoblasts: forms the cementum Fibroblasts: forms the intercellular substance of the pulp Osteoblasts: forms the bone Q20
- 22. Anatomy of a Tooth
- 23. Deciduous and Permanent Dentition Eruption Patterns week 2 lecture 2 Primary (baby) teeth = Permanent (adult) teeth = Universal Tooth Numbering: Most common numbering system used 20 32 Q18
- 26. Anterior / Posterior Teeth PRIMARY PERMANENT Q14 Q15
- 27. Deciduous teeth do not have bicuspids or third molars Deciduous teeth Starts to erupt Q12
- 28. Mixed Dentition
- 29. Tooth Surfaces 5 surfaces each tooth: Anterior teeth: mesial, distal, lingual, facial and incisal Posterior teeth: mesial, distal, lingual, buccal, and occlusal Mesial: side of the tooth towards the midline Distal: side of the tooth away from the midline Lingual: side of the tooth closest to the tongue Facial / Labial: side of the tooth towards the lips (Anterior teeth) Incisal: sharp thin edge of the anterior tooth Buccal: side of the tooth towards the cheek of the posterior teeth Occlusal: chewing surface of the posterior teeth Q9
- 30. Divisions into Thirds O Each tooth surface is divided into imaginary thirds to help identify a specific area of the tooth
- 31. Surfaces of the Teeth Cavity Classification Cavity classification is a way of determining where a cavity is on a tooth and what class of preparation it needs or has. Q13
- 32. Black’s Cavity Classification Developed by Dr. G. V. Black Q13
- 33. CLASS TOOTH AFFECTED SURFACES INVOLVED CHARTING PICTURE I Both ANTERIOR and POSTERIOR TEETH Occlusal Pit and Fissure Buccal or Lingual Pits O, B, L-pit, OB, OL II POSTERIOR TEETH ONLY Premolars / Molars Proximal surfaces (mesial or distal) MO, DO, MOD, MOB, DOB, MODB, MOL, DOL, MODL
- 34. CLASS TOOTH AFFECTED SURFACES INVOLVED CHARTING PICTURE III ANTERIOR TEETH ONLY Interproximal surface Mesial or Distal Only – Does NOT involve the incisal edge M, D, MF, DF, ML, DL IV ANTERIOR TEETH ONLY Interproximal surface Mesial / Distal AND INCLUDES the incisal edge MI, DI, MIL, DIL, MFI, DFI, MILF, DILF
- 35. CLASS TOOTH AFFECTED SURFACES INVOLVED CHARTING PICTURE V ANTERIOR / POSTERIOR TEETH Gingival third Facial or Lingual Surface F, L VI ANTERIOR TEETH / POSTERIOR TEETH INCISAL EDGE OF ANTERIOR TEETH CUSP TIP OF POSTERIOR TEETH Cusp tip / I
- 36. Vestibule O Is the area between the teeth, lips and cheeks.
- 37. Mouth Mirror Inspection Performed by RDA under Direct Supervision
- 38. Characteristics of Maxillary Second Premolars Compared to Max First Premolar O The lingual cusp is slightly shorter O The cusps are not as sharp O The second premolar has only one root and one root canal O Wider buccolingually than mesiodistally
- 39. Number of Roots Single rooted teeth O Max. CI, LI, C O Max. 2nd bicuspid O Mand. CI, LI,C O Mand. 1st, 2nd bicuspid Bi-rooted teeth O Max. 1st bicuspid O Mand. 1st, 2nd, 3rd molar TRI-Rooted teeth O Max. 1st, 2nd, 3rd molar
- 40. First Molars
- 41. END OF WEEK 2