Saliva & Caries PDF 2024

Saliva and Caries Sena Narendran Dept. of Community Dentistry © Sena Narendran,  Readings Dental Caries: The Disease and its Clinical Management. (Eds.) Ole Fejerskov, Bente Nyvad and Edwina Kidd.  Historical Persp...

Saliva and Caries Sena Narendran Dept. of Community Dentistry © Sena Narendran,  Readings Dental Caries: The Disease and its Clinical Management. (Eds.) Ole Fejerskov, Bente Nyvad and Edwina Kidd.  Historical Perspective 1903: Excessive Dry Mouth “The teeth began decaying frightful manner, especially at necks and along the free margins of the fillings” (W.D.Miller) Radiation Caries (Kidd & Joyston- Bechal) Major Salivary Gland Locations (Fejerskov et al.)  Salivary Glands Major: – Parotid: Watery saliva – Submandibular: Viscous saliva – Sublingual: Viscous saliva Minor: Viscous saliva Salivary Glands - Regulation – Parasympathetic: Watery Saliva – Sympathetic: More ViscousProteins  Taste Stimuli Sour Salt Bitter Sweet  Saliva: Composition Water = 99% Solids = 1% (Electrolytes, Proteins) Major Salivary Glands: 90% Minor Salivary Glands: 10% Daily: 0.5 – 1 liter pH=6.0-7.5 Fluoride: 0.01-0.03 ppm  Viscosity of Saliva Minor glands >9 x Parotid Sub-manbibular >2-3 x Parotid Sub-lingual >2-3 x Parotid  Salivary Flow Rate Unstimulated – Resting: 0.3–0.5 ml/minute Stimulated - Mechanical: 1–2 ml/minute Stimulated - Sour: 5–10 ml/minute Xerostomia: Resting