Dental Terminology Quadrants Maxillary

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Dental Terminology ● Quadrants ○ Maxillary: Top ○ Mandibular: Bottom ○ 4 quadrants total in mouth ■ I) Top right ■ II) Top left ■ III) Bottom left ■ IV) Bottom right ● Primary vs. Secondary Dentition ○ Primary (deciduous) ■ 10 on maxillary and 10 on mandibular = 20 total ■ Universal Numbering System (A-T) ○ Secondary (permanent teeth) ■ 16 on the maxillary, 16 on mandibular= 32 total ● Tooth Numbering System ○ Universal ■ Most common in US ■ Permanent: 1-32 ■ Primary: A-T ○ Palmer Notation ■ Orthodontics ■ Permanent: Maxillary/Mandibular 1-8 ○ FDI ■ Numbering quadrants 1-8 (similar to palmar Notation) ● 1st number=quadrant, 2nd=tooth ● Permanent: quadrants 1-4, tooth 1-8 from the midline ● Primary: quadrant 5-8, tooth 1-5 ● Types of Teeth (Adult Dentition) ○ Anterior ■ Central Incisors (4), Lateral incisors (4), Canines (4) ○ Posterior ■ Premolars (4), Molars (6) ● Parts/Locations of the Tooth ○ Mesial: towards the middle/midline ○ Distal: further distance from midline, more posterior ○ Occlusal: biting surface of teeth ○ Facial/Buccal: face/cheek side ○ Lingual: tongue ● The Tooth ○ Enamel: hardest and most highly mineralized substance in your body ■ Covers outer layer, most visible part of the tooth ○ Crown: anatomical area of the teeth, usually covered by enamel ○ Dentin: yellowish tissue that makes up the bulk of all teeth ○ Cementum: covers the roots of the teeth and serves to anchor gingival and periodontal fibers ○ Pulp: soft area within the center of the tooth and contains the nerve, blood vessels, and connective tissue ○ Root: covered by cementum rather than enamel and attached by the periodontal ligament to the alveolar bone ● Healthy vs. Unhealthy ○ Healthy gingiva ■ Stippled, coral pink, firm, pyramidal interdental papilla ○ Unhealthy gingiva ■ Red (erythematous), blue (cyanotic), fibrotic, rolled/blunted, recession ○ HEALTHY GUMS DON’T BLEED ● Periodontal Disease ○ Reason why dental professions take probing depths ○ Measuring the alveolar bone loss around the tooth ○ 6 probing depths per tooth ■ Lingual: mesial, direct, distal ■ Facial: Mesia, direct, distal ○ Perio Disease can lead to tooth loss ■ Normal/Healthy Perio Depths 1-2 mm ■ Gingivitis: 2-3 mm ■ Slight 3-4 mm ■ Moderate 5-6 mm ■ Severe 7+ mm ● GV Black Classification ○ System to categorize carious lesions based on the type of tooth affected .

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ISSN: 2320-5407 Int. J. Adv. Res. 7(10), 979-1021
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