Dentistry is the branch of medicine focused on caring for teeth, gums, and mouths. A dentist is a doctor who has spent years learning how to prevent, diagnose, and treat problems with teeth and the surrounding tissues. When you visit the dentist for a checkup, they examine your teeth for cavities, check your gums for disease, and often clean away plaque that regular brushing might miss.

Dentistry involves fixing cavities, straightening crooked teeth with braces, replacing missing teeth with implants or bridges, removing wisdom teeth that don't have room to grow properly, and teaching people how to care for their teeth at home. Some dentists specialize in particular areas: an orthodontist focuses on straightening teeth, while an oral surgeon performs complex operations inside the mouth.

Modern dentistry has transformed dramatically over the past century. Ancient dentists had few tools and no anesthesia, making dental work painful. Today's dentistry uses X-rays to see hidden problems, numbing medications to eliminate pain, and advanced materials to repair or replace damaged teeth. Good dental care helps people keep their natural teeth healthy for their entire lives, which matters because healthy teeth affect everything from nutrition to confidence to overall health.