{"id":474,"date":"2025-11-20T18:00:20","date_gmt":"2025-11-20T23:00:20","guid":{"rendered":"https:\/\/nmgworks.com\/clients\/greer619\/blog\/?p=474"},"modified":"2026-03-24T15:48:03","modified_gmt":"2026-03-24T20:48:03","slug":"what-causes-tooth-decay","status":"publish","type":"post","link":"https:\/\/sweetwatersmile.com\/blog\/what-causes-tooth-decay\/","title":{"rendered":"What Causes Tooth Decay?"},"content":{"rendered":"

What Causes Tooth Decay?<\/b><\/h1>\n

Tooth decay is one of the most common dental problems in the world \u2014 but also one of the most preventable. At Sweet Water Dentistry in Fairhope, AL, we diagnose and treat decay every day, and we\u2019ve seen how understanding the causes can help patients make healthier choices. This guide breaks down how cavities form, what really puts your teeth at risk, and how you can protect your smile for life.<\/p>\n

What Is Tooth Decay?<\/b><\/h3>\n

Tooth decay occurs when harmful bacteria break down the enamel (your tooth\u2019s protective shell). Over time, this creates holes called cavities. If untreated, decay spreads deeper, affecting the dentin and eventually the nerve of the tooth.<\/p>\n

The 4 Main Causes of Tooth Decay<\/b><\/p>\n

1. Bacteria + Sugar = Acid<\/b><\/p>\n

When you eat sugar or refined carbs (like sweets, sodas, breads, or juices), bacteria in your mouth feed on them and release acid<\/b>.
\nThis acid is the true cause of decay.<\/p>\n

2. Poor Oral Hygiene<\/b><\/p>\n

Not brushing and flossing properly lets plaque harden into tartar, which traps bacteria against the enamel.<\/p>\n

3. Dry Mouth<\/b><\/p>\n

Saliva is your mouth\u2019s natural defense system. It washes away particles and neutralizes acid.
\nDry mouth increases cavity risk dramatically, especially in people taking medications for:<\/p>\n