When children get tooth decay, many people simply attribute it to excessive sugar intake. In fact, dental caries result from combined effects of bacteria, tooth conditions, food and exposure time. Pujing Dental Clinic explains the main contributing factors:
1. Saliva condition
Healthy saliva washes tooth surfaces and neutralizes acid to protect teeth. Insufficient saliva flow raises caries risk due to reduced buffering and cleansing capacity. Higher lactic‑acid level in saliva also promotes caries development.
2. Oral hygiene and cariogenic bacteria
Many children brush their teeth carelessly. Food residues remain on tooth surfaces and occlusal grooves. Cariogenic bacteria feed on residues and form dental plaque. Acid produced by plaque demineralizes enamel and leads to cavities.
3. Tooth‑related factors
Morphology, mineralization and tissue structure of teeth directly affect caries susceptibility. Calcium, phosphorus, vitamin D and fluoride mainly participate in tooth mineralization before tooth eruption.
Insufficient intake during tooth development results in poorly‑mineralized teeth with weaker acid resistance, which are more vulnerable to decay after eruption. Calcium or vitamin D supplements cannot improve mineralization of already‑erupted teeth. Deep pits and fissures or crowded teeth also facilitate plaque retention.
4. Food‑related factors
(1) Carbohydrates
Carbohydrates serve as energy sources for oral bacteria. Bacteria metabolize carbohydrates into organic acids and sticky polysaccharides that help bacteria adhere firmly to teeth. **Frequency of intake matters more than total consumption**. Frequent snacking on sweets continuously feeds bacteria and damages teeth.
(2) Biscuits
Highly‑processed biscuits are sticky and tend to stick to teeth. Without timely cleaning, plaque accumulates and increases caries risk.
(3) Dried fruits
Dried fruits contain sugar and sticky residues that cling between teeth and supply nutrients for bacteria. Oral cleaning is recommended after consumption.
(4) Coffee
Black coffee itself does not directly cause cavities. Tannins in coffee may lead to extrinsic tooth staining. Sugar‑added coffee increases caries risk due to added sugar.
(5) Carbonated drinks
Carbonated beverages are acidic and may cause enamel erosion and demineralization. Eroded enamel becomes weaker and more susceptible to secondary caries.
Pujing Dental Clinic is a professional dental institution offering dental implants, orthodontics, aesthetic dentistry, prosthodontics, general treatment and pediatric dentistry. Digital dental equipment and techniques are adopted to deliver comfortable dental care.
