Dentistry is the healthcare profession concerned with the prevention, diagnosis, treatment and management of diseases and disorders affecting the teeth, gums, oral mucosa, jaws and associated structures, together with broader aspects of oral health. Dental practice includes preventive care, oral examination, diagnosis of dental disease, restoration of damaged teeth, management of periodontal conditions, extraction of teeth, prosthetic rehabilitation and other procedures depending on the practitioner's training and scope. Oral health is closely connected with general health, but dentistry remains a distinct professional discipline with specialised anatomical, biological, diagnostic and procedural knowledge. Dental services can be delivered in general dental practices, hospitals, community services, specialist clinics, academic institutions and other healthcare environments.
Dentistry has ancient roots, with archaeological evidence showing attempts to treat dental problems thousands of years ago, but modern scientific dentistry developed particularly from the eighteenth and nineteenth centuries onwards. The development of dental anatomy, operative techniques, anaesthesia, radiography, restorative materials, infection control and preventive dentistry transformed practice. Fluoride exposure, improved oral-hygiene knowledge and population-level preventive programmes have contributed to reductions in dental caries in many populations, although disease burdens remain substantial and vary according to age, socioeconomic circumstances, diet, access to care and other factors. Contemporary dentistry increasingly emphasises prevention and preservation of natural tooth structure rather than treating disease only after substantial damage has occurred.
Dental caries is a major condition managed by Dentistry and results from interactions among oral microorganisms, fermentable dietary carbohydrates, tooth surfaces, saliva and time, producing acid-mediated demineralisation that can progress to cavitation. Prevention involves reducing risk factors and strengthening protective factors, particularly effective plaque control and exposure to fluoride where appropriate. Periodontal diseases affect the tissues supporting teeth and include gingivitis and periodontitis, with inflammation and, in advanced disease, destruction of supporting structures. Diagnosis generally involves clinical examination, periodontal assessment and imaging when indicated. Dental disease can cause pain, impaired chewing, altered speech, tooth loss and effects on quality of life, making dentistry relevant to nutrition, communication and social functioning as well as local oral anatomy.
Dental diagnosis combines history, clinical examination and investigations such as dental radiography or other imaging when clinically justified. Dentists assess teeth, periodontal tissues, oral mucosa, occlusion, jaw function and signs of infection or pathology. Treatment may involve preventive advice, professional cleaning, restorations, endodontic treatment, extraction, crowns, bridges, dentures or other procedures. Restorative dentistry aims to restore function and structure while controlling disease. Prosthodontic treatment replaces missing or severely damaged teeth and can involve removable or fixed appliances. Endodontic treatment addresses disease of the dental pulp and root canal system, commonly when inflammation or infection has become irreversible.
Dentistry includes numerous specialist areas, although exact specialties differ by jurisdiction. These can include orthodontics, oral and maxillofacial surgery, periodontology, endodontics, prosthodontics, paediatric dentistry, restorative dentistry, oral medicine, oral pathology and dental public health. Orthodontics primarily addresses tooth and jaw relationships; oral and maxillofacial surgery encompasses surgical management of conditions involving the mouth, jaws and facial structures; periodontology focuses on supporting tissues; and paediatric dentistry concentrates on oral health in children and adolescents. The existence of these disciplines means that "dentistry" encompasses a broad professional field rather than one uniform type of treatment.
Preventive Dentistry is fundamental because many oral diseases are influenced by modifiable factors. Dental professionals provide advice about toothbrushing, fluoride toothpaste, dietary frequency, sugar consumption, interdental cleaning, smoking and other risk factors. Regular examinations can identify disease or abnormalities before symptoms become severe, although the appropriate interval between examinations should depend on individual risk rather than an assumption that every person needs the same schedule. Dentistry also contributes to early detection of oral lesions and other abnormalities, with suspicious findings requiring appropriate investigation or referral. The profession therefore includes both direct treatment and population-level efforts to reduce disease incidence and progression.
Dentistry has important relationships with Medicine, Pharmacy, Nursing and other healthcare disciplines. Some systemic diseases and medicines affect oral health, while oral conditions can complicate general medical care. Dentists must consider medical history, allergies, medications, bleeding risks, immune status and other factors before treatment, and may coordinate with physicians when necessary. Dental infections can produce significant local and systemic consequences in particular circumstances, although simplistic claims that oral disease directly causes every systemic disease are not supported. Common misconceptions also include treating dentistry as purely cosmetic; while cosmetic procedures are part of some dental practice, a substantial proportion of Dentistry concerns disease prevention, pain control, infection management, function and preservation of oral health.
Modern Dentistry combines biological science, clinical diagnosis, manual dexterity, materials science, imaging, pharmacology, infection prevention and patient communication. Dental treatment can have substantial benefits for pain, function and quality of life, but procedures also have limitations, risks, costs and potential for treatment failure. Good dental care therefore depends on accurate diagnosis, appropriate indication, informed consent, preventive planning and maintenance after treatment. Oral health inequalities remain influenced by access, income, education, diet, geography and other social determinants. Dentistry's significance extends beyond individual teeth because oral function, nutrition, communication, appearance and comfort contribute to general wellbeing, while prevention can reduce the need for increasingly invasive treatment later in life.
