Dental answers, made clearer
Clear, concise answers to common dental questions—written for people who want the essential information first.
Tooth decay begins when bacteria in plaque feed on sugars and produce acid that gradually breaks down the tooth's enamel. Left untreated, this acid attack progresses from the outer enamel into the softer dentin layer, eventually forming a cavity.
Read the answerTooth decay is the ongoing process of enamel breakdown, while a cavity is the physical hole that results once decay has eaten through the tooth structure. In other words, decay is the disease, and a cavity is the visible damage it leaves behind.
Read the answerEarly tooth decay often shows up as a white or brown spot on the enamel, mild sensitivity to sweet or cold foods, or a rough patch you can feel with your tongue. At this stage it's usually painless, which is why routine dental checkups catch it before symptoms appear.
Read the answerVery early decay, before a cavity has formed, can sometimes be reversed with fluoride treatment and improved oral hygiene, since enamel can remineralize at this stage. Once a cavity has actually formed, though, the damaged structure cannot heal itself and needs a filling or similar restoration.
Read the answerEnamel erosion is caused by repeated acid exposure from sources like sugary or carbonated drinks, acidic foods, frequent vomiting, or acid reflux, rather than by bacteria directly. Unlike decay, erosion wears the tooth surface down smoothly and can leave teeth looking yellow and feeling sensitive.
Read the answerPersistent bad breath after brushing is usually caused by bacteria trapped on the back of the tongue, between teeth, or under the gumline, areas a toothbrush alone doesn't fully clean. Other common contributors include dry mouth, gum disease, and certain foods or medical conditions.
Read the answerYes, chronic bad breath that doesn't improve with better brushing and flossing can be an early sign of gum disease, tooth decay, or a dental infection. If it lasts more than a few days despite good oral hygiene, it's worth having a dentist check for an underlying cause.
Read the answerTreatment depends on the cause: a professional cleaning to remove plaque and tartar, treatment for any gum disease present, or addressing dry mouth if that's the trigger. Because halitosis is often a symptom rather than a standalone problem, the dentist will usually look for and treat the root cause instead of just masking the odor.
Read the answerMouthwash can temporarily mask bad breath, but it doesn't treat the underlying bacteria buildup or gum issue causing it. Antibacterial mouthwash used alongside proper brushing and flossing helps manage odor, but it isn't a substitute for a dental checkup if the smell keeps coming back.
Read the answerGingivitis is the earliest, mildest stage of gum disease, involving red, swollen, or bleeding gums without any bone loss. Periodontitis is the more advanced stage, where the infection has spread below the gumline and started damaging the bone and tissue that hold teeth in place.
Read the answerGingivitis, the early stage, is fully reversible with professional cleaning and consistent oral hygiene. Periodontitis, however, involves permanent bone and tissue loss, so treatment at that stage focuses on stopping further damage rather than restoring what's already been lost.
Read the answerTreatment typically starts with scaling and root planing, a deep clean that removes plaque and tartar from below the gumline. More advanced cases may need antibiotics or gum surgery to reduce pocket depth and allow the gums to reattach to the tooth.
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