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Levisons Dental Nursing Textbook Oral Anatomy and Physiology Notes $7.03
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Levisons Dental Nursing Textbook Oral Anatomy and Physiology Notes

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Notes or summary of the Levisons Dental Nursing Textbook, covering only Chapter 10 Oral Anatomy and Physiology

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  • June 22, 2021
  • 3
  • 2020/2021
  • Class notes
  • Harriet ellis
  • Chapter 10: oral anatomy and physiology
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Oral Anatomy/ Physiology
Living Membrane- Inner cheek/ lip surfaces, underneath tongue, soft palate.
Areas act as cushion, lubrication and cleansing
Masticatory Membrane- Gingiva, edges of tongue, hard palate, prevents
trauma
Specialised Membrane- Top/ edges of tongue, gives taste sensation
Soft Palate Prolongation- Uvula
Tongue Functions:
 Speech
 Taste
 Helps chewing and swallowing
 Cleansing
Soft palate seals off nasopharynx to prevent food bolus entering nose
Epiglottis seals larynx and prevents bolus from entering trachea
Glossitis- Tongue inflammation, can occur in anaemia, vitamin B deficiency or
hormonal disturbances
Dysphagia- Difficulty swallowing:
 Psychological- Inability to swallow
 Xerostomia- Dry mouth
 Oesophagitis- Oesophagus inflammation
Other pharyngeal or oesophagus disorders relate to cancers
Tooth Morphology- Shape and function of teeth
Cementum- Covers root dentine only, 65% calcium hydroxyapatite crystals,
attaches root to periodontal ligament, ameloblasts, Dentinocemental junction
Fluoride- Fluorapatite crystals, makes enamel harder and more resistant to
decay
Enamel- 96% inorganic mineral crystals, main crystals are calcium
hydroxyapatite, formed by ameloblast cells
Dentine- 80% inorganic crystals calcium hydroxyapatite, odontoblasts, sensory
nerve endings called Fibrils.

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