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Overall Classification: UNCLASSIFIED//REL TO NATO/ISAF.

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Presentation on theme: "Overall Classification: UNCLASSIFIED//REL TO NATO/ISAF."— Presentation transcript:

1 Overall Classification: UNCLASSIFIED//REL TO NATO/ISAF

2 In this lecture we will teach you the basic dental nomenclature and term. Tooth and her function Teeth eruption AFAMS Dental Advisor Team

3 Teeth are arranged in the jaws to form two dental arches. The maxilla forms the maxillary or upper arch the mandible forms the mandibular or lower arch AFAMS Dental Advisor Team

4 Together, the two arches make up one dentition, or set of teeth. During a lifespan, each person normally will have two dentitions, the primary and the permanent AFAMS Dental Advisor Team

5 The first set of teeth, the primary dentition, begins to emerge into the mouth between 6 and 8 months of age. Teeth continue to erupt periodically, following a developmental schedule, until 20 teeth, 10 maxillary and 10 mandibular, have erupted by the age of 2½ – 3 years. AFAMS Dental Advisor Team

6 The primary teeth eventually exfoliate, or shed, and are replaced by permanent teeth. When all the permanent teeth have erupted, by the ages of 17 through 21, the permanent dentition is complete. AFAMS Dental Advisor Team

7 There are 32 permanent teeth, 16 maxillary and 16 mandibular. Between 6 and 7 years of age, the first permanent tooth, the mandibular first molar, erupts posterior to the last primary molar. Permanent molars do not replace or succeed primary teeth. AFAMS Dental Advisor Team

8 Between the ages of 5 and 12, some primary and some permanent teeth are present in the mouth at the same time; this is referred to as a mixed dentition AFAMS Dental Advisor Team

9 Each dentition includes several types of teeth shaped to perform specific functions. AFAMS Dental Advisor Team

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11 Incisors Canines Premolars Molars AFAMS Dental Advisor Team

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13 The four front teeth and have sharp biting edges for incising, or cutting, food. The two in the middle of the arch are central incisors Those on either side are lateral incisors. There are four incisors in each arch. AFAMS Dental Advisor Team

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15 Also called cuspids, are the corner teeth and have one pointed cusp used to hold and tear food. There are two canines in each arch. AFAMS Dental Advisor Team

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17 Also called bicuspids, are posterior teeth having two major cusps adapted to crush and tear food. Premolars are named by their sequence in the arch from front to back as first premolar and second premolar. There are four premolars in each arch. AFAMS Dental Advisor Team

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19 Molars are broad back teeth having several cusps adapted to chew, crush, and grind food. They are named by their sequence from the front to the back of the arch as "first molar," "second molar," and "third molar. There are six molars in each arch. AFAMS Dental Advisor Team

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22 Each tooth performs its individual function in the process of mastication, or chewing. By working together, the teeth prepare food for swallowing and digestion AFAMS Dental Advisor Team

23 The primary dentition has 20 teeth, 10 maxillary and 10 mandibular. They are smaller but similar in shape and function to the permanent teeth. AFAMS Dental Advisor Team

24 Types of Teeth: Incisors: two central and two lateral, four in each arch Canines: one in each corner of the arch, two in each arch Molars: two first molars, two second molars, four in each arch AFAMS Dental Advisor Team

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26 Each primary tooth is eventually replaced by a permanent tooth. Note, however, that there are no primary premolars Primary molars are succeeded by permanent premolars. Permanent molars erupt posterior to the primary molars without replacing any primary teeth AFAMS Dental Advisor Team

27 Teeth are arranged in an upper and lower dental arch. The anterior teeth are those in the front of the mouth and include incisors and canines. The Posterior teeth, those in the back of the mouth, include premolars and molars. AFAMS Dental Advisor Team

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29 To identify a tooth correctly, it is designated not only by its name and arch but also by the quadrant in which it is located. Each quadrant is specified according to the patients right or left side. AFAMS Dental Advisor Team

30 DENTITIONARCHQUADRANTTOOTH PermanentMandibularRightCentral Incisor DENTITIONARCHQUADRANTTOOTH PermanentMandibularRightCentral Incisor AFAMS Dental Advisor Team

31 Although teeth begin to form in utero, eruptions occur at approximately 6-8 months of age. Eruption dates vary from person to person by a few months, just as the individual growth rate varies mandibular teeth generally precede maxillary teeth in eruption AFAMS Dental Advisor Team

32 Primary teeth ToothMonths(+/-) Mandibular central incisors6 Mandibular lateral incisors7 Maxillary central incisors7 1/2 Maxillary lateral incisors8 Mandibular first molars12-16 Maxillary first molars14 Mandibular canines16 Maxillary canines18 Mandibular second molars20 Maxillary second molars24 CFHSTC Clin Perio Crse 0013 By the age of 2 ½ – 3 years, all primary teeth have erupted; at about 6 years, the permanent teeth start to erupt.

33 ToothYears (+/-) Mandibular first molars6-7 Maxillary first molars6-7 Mandibular central incisor6-7 Mandibular lateral incisors7-8 Maxillary central incisors7-8 Maxillary lateral incisors8-9 Mandibular canines9-10 Maxillary first premolars10-11 Mandibular first premolars10-12 Maxillary second premolars11-12 Mandibular second premolars11-12 Maxillary canines11-12 Mandibular second molars11-13 Maxillary second molsar12-13 Third molars17-21 AFAMS Dental Advisor Team

34 Continual use of the teeth throughout life can cause a slight wearing away of the biting and/or chewing surfaces and, hence, a decrease in the height of the tooth. This wearing away is called attrition. AFAMS Dental Advisor Team

35 Grinding of the teeth (bruxism) also causes attrition. AFAMS Dental Advisor Team

36 Abrasion of the tooth surfaces can be caused by mechanical wear such as continual biting on an object or brushing too vigorously. AFAMS Dental Advisor Team

37 During a person's lifespan there will be two sets of teeth. The first set, the primary or deciduous dentition, consists of 20 teeth. It eventually exfoliates and is replaced by the permanent dentition, which has 32 teeth. AFAMS Dental Advisor Team

38 Each dentition has several types of teeth shaped to perform specific functions; they work in conjunction with one another to prepare the food for digestion AFAMS Dental Advisor Team

39 Overall Classification: UNCLASSIFIED//REL TO NATO/ISAF


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