Saliva: The Essential Enzyme-Rich Fluid in Your Mouth

Saliva is a complex, enzyme-containing fluid secreted by major (parotid, submandibular, sublingual) and minor salivary glands. Daily volume: 0.5–1.5 L.

Composition & Functions

Clinical Significance

• Xerostomia (Dry Mouth): Medications (anticholinergics), Sjögren's, radiation → caries, candidiasis, dysphagia, speech difficulty. Manage: hydration, sialogogues (pilocarpine, cevimeline), substitutes, fluoride.
• Diagnostics: Salivary cortisol, hormones, drugs, HIV/HCV antibodies, SARS-CoV-2, genomic/proteomic biomarkers.
• Wound Healing: Oral mucosa heals faster than skin — saliva growth factors, humid environment.

Saliva is essential for digestion, oral health, and systemic defense.

Oral Cancer - Related Articles

• Mucoepidermoid Carcinoma: Symptoms, Causes & Treatment Options
• Understanding Mouth Lumps: When to See a Doctor
• Oral Cancer Symptoms: What to Watch For - Causes & Risk Factors
• Foot-and-Mouth Disease: Name Origin and Clinical Features
• Purple Lips (Cyanosis): Causes, Urgency & When to Call 911
• The Vital Role of Your Mouth: Health & Function
• Understanding and Treating HPV Throat Infections

Oral Cancer

• Oral Cancer Symptoms: What to Look For & When to See a Doctor
• Alcohol and Smoking: Understanding the Link to Oral Cancer Risk
• Dental X-rays and Cancer Risk: What You Need to Know
• Chewing Tobacco and Oral Cancer: Clarifying the Risk
• Understanding Tongue Cancer: Symptoms, Types & Early Detection
• Cleopatra's Nose: Separating Fact from Fiction
• Oral Cancer: Symptoms, Signs & What to Watch For
• Respecting Medical Privacy: Discussing an Elder's Health Concerns
• Hand, Foot, and Mouth Disease: Oral Lesions on Palate and Beyond
• Understanding the Health Risks of Tobacco Snuff
• Strange Taste and Excessive Saliva: Causes Beyond Pregnancy
• Marble Mouth: Speech Disorder Description & Etiologies

Health Sciences © https://www.222health.com

Component	Function
Water (99%)	Solvent, lubrication, bolus formation
α-Amylase (ptyalin)	Initiates starch digestion → maltose, maltotriose
Lingual Lipase	Begins triglyceride hydrolysis (critical in infants)
Mucins (MUC5B, MUC7)	Viscoelastic lubrication, mucosal coating, microbial aggregation
Lysozyme, Lactoferrin, Peroxidase, Defensins, Histatins	Antimicrobial, antifungal, antiviral
Bicarbonate, Phosphate	Buffering (pH 6–7), enamel remineralization
Epidermal Growth Factor (EGF)	Mucosal healing, barrier integrity
Immunoglobulins (sIgA)	Mucosal immunity, pathogen exclusion