Histology of teeth Eruption stages Signs of teeth

Histology of teeth Eruption stages. Signs of teeth. Tooth.

Teeth are Made of: n n n The hard material of the tooth is composed of calcium, phosphorus, and other mineral salts. The material in the majority of the tooth is called dentine. The hard, shiny layer that you brush is called the enamel.

Human Teeth Ø You have teeth so that you can bite, crush or break your food. Ø Teeth help to break down food so that your digestive system can get the nutrients out of the food. Ø You need energy to stay alive. Ø Humans are omnivores. They eat plants and meat v In adult humans there are 32 permanent teeth.

Parts of a developing tooth An erupting temporary tooth

Structure of a tooth External parts of a tooth

Internal Parts of a Tooth

Human Anatomy

ENAMEL DENTINE PULP CAVITY

Structural components of teeth n n Enamel: is a hard outer layer consisting primarily of calcium and phosphate in the form of hydroxyapatite. Dentin: is the inner layer, the bulk of the tooth. Pulp: is the core, containing nerves and blood vessels. Cementum: is the thin layer around the root; a bone-like material which connects the teeth to the jaw

TYPES OF TEETH AND FUNCTION INCISORS wide, flat, sharp cutting edge and snipping food CANINE Ø Shaped like daggers and used for cutting gripping, ripping food. sometimes called eyeteeth. MOLARS AND PREMOLARS Ø Flat surface used for grinding molar teeth large but pre-molar is smaller

TOOTH DECAY Blood Vessels NERVES

Tooth Eruption Chart Tooth Primary Permanent Upper Teeth Central Incisor 8 -12 months 7 -8 years Lateral Incisor 9 -13 months 8 -9 years Canine 16 -22 months 11 -12 years 1 st Premolar - 10 -11 years 2 nd Premolar - 10 -12 years 1 st Molar 13 -19 months 6 -7 years 2 nd Molar 25 -33 months 12 -13 years Wisdom Tooth - 17 -21 years Central Incisor 6 -10 months 6 -7 years Lateral Incisor 10 -16 months 7 -8 years Canine 17 -23 months 9 -10 years 1 st Premolar - 10 -12 years 2 nd Premolar - 11 -12 years 1 st Molar 14 -18 months 6 -7 years 2 nd Molar 23 -31 months 11 -13 years Wisdom Tooth - 17 -21 years Lower Teeth

Type of teeth

The teeth. . . humans have 8 incisors I 4 canines 8 premolars 12 molars C P M abbreviations molar pre molar

foods are good for our teeth

Foods that cause tooth decay

cavities caused Bacteria causes a build up of plaque. Plaque acid attacks the tooth The tooth eventually rots away

Brush your teeth twice a day Try not to eat too many sweets Visit the dentist twice a year

References 1. Joel. WAger III, 1 Ravi K Nalla, 1, 2, 3 Guive Balooch, 1, 4 Grace Kim, 1, 2 Megan Pugach, 4 Stefan Habelitz, 4 Grayson. WMarshall, 4 John H Kinney, 5, 6 and Robert O Ritchie 1, 2 Published online on. August 28, 2006 American Society doi: 10. 1359//JBMR. 060816 2 - Dr. Yusuf Emes Bull Int Assoc Paleodont. 2011; 5(1): 3747. Istanbul University Faculty of Dentistry, Department of Oral and Maxillofacial Surgery Istanbul, Turkey 3 - www. ischool. zm/media/dentition_in_humans 4 - www. auburn. edu/academic/classes/zy/. . /Tooth Development. Txt 5 - www. users. forthnet. gr/ath/abyss/dep 1151. htm : 21/03/2009

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