Do You Know?

An implant crown and a bridge can both replace one missing tooth. Here is how they compare on survival, cost and the health of the teeth next to the gap.

Teeth can wear from acid, grinding or hard brushing, and each looks different. Learn the signs, the common causes, and why early checks matter.

A clicking jaw is common and often harmless. Here is what the evidence says about jaw clicking, which signs need a check, and what helps.

A night guard protects your teeth from grinding, but it usually does not stop the grinding itself. Here is what the evidence says and how to get the most from one.

In most people bad breath starts in the mouth, not the stomach. Here is what causes it and what actually helps.

Do You Know? For patients. Sugar is only part of the story. Some of the most popular drinks and snacks in Qatar harm teeth in different ways, and knowing how helps you enjoy them more safely. Four favourites, four ways* Cola and soft drinks are acidic. Acid softens the outer surface of enamel for a while after each drink. * Karak tea is sweet and thick, so sugar stays on the teeth longer, especially when sipped slowly. * Energy drinks combine acid and sugar, and frequent sipp

Do You Know? For patients. Many people notice a change in their breath during the afternoon while fasting. It is not usually a sign that you forgot to brush. What is happening* Less saliva: without food or water, saliva flow drops, and saliva is the mouth's natural cleaner. * A change in fuel: after many hours without food, the body starts burning fat and releases ketones, which have a distinct smell on the breath. * Dry mouth and halitosis are among the most common oral comp

Do You Know? For patients. The health questionnaire at a dental visit is not paperwork for its own sake. Many conditions and medicines change how a mouth heals, bleeds or responds to treatment. What it changes* Blood thinners: anticoagulants and antiplatelet medicines affect bleeding after extractions and gum treatment. Most people do not need to stop them, but the plan is adjusted. * Bone medicines: some treatments for osteoporosis and cancer (antiresorptive and antiangiogen

Do You Know? For patients. A dental X-ray takes a second, but it shows what an eye or a mirror cannot. What X-rays find* Decay between teeth, where back teeth touch and cannot be seen directly. * Bone levels around teeth and implants. * Infection at the root tips, cracks, old fillings leaking underneath, and teeth that have not come through. * A panoramic image also shows the jaw joints, the jaw bone and the lower part of the sinuses. How much radiation?Doses from modern digi

Do You Know? For patients. Gum disease and diabetes affect each other in both directions. This is one of the best-studied links between the mouth and the rest of the body. The two-way link* People with diabetes are more likely to develop gum disease, and it tends to be more severe when blood sugar is poorly controlled. * People with gum disease (periodontitis) have higher HbA1c levels on average and a higher risk of developing type 2 diabetes. * Treating gum disease is safe i

Do You Know? For patients. Cardiologists and periodontists have studied the connection between gum disease and heart disease together. Their joint consensus found a consistent association between severe gum disease and cardiovascular disease. What we know* Inflamed gums let bacteria enter the bloodstream during everyday activities such as chewing and brushing. * Gum disease adds to the body's overall level of inflammation, which plays a part in narrowing of the arteries. * Th

Do You Know? For patients. The mouth hosts one of the most diverse communities of bacteria in the body, second only to the gut. Researchers are now studying how the two are connected. What research suggests* We swallow large amounts of saliva every day, and some oral bacteria can reach and settle in the gut. * Some oral bacteria have been found in higher numbers in people with certain gut conditions, such as inflammatory bowel disease. * Much of this research is recent and co

Do You Know? For patients. Studies of elite athletes have repeatedly found poor oral health, despite their focus on fitness. Regular gym-goers share many of the same risks. Where the risks come from* Sports and energy drinks sipped through a workout keep teeth bathed in acid and sugar. * Breathing through the mouth during hard exercise dries the mouth, and saliva is the main protection teeth have. * Clenching during heavy lifts puts high forces on teeth and can chip edges or

Do You Know? For patients. Breathing through the mouth most of the time, often because of large tonsils or adenoids, changes how the tongue, lips and jaw sit at rest. Why it matters* Tooth position depends largely on the resting pressure of the tongue and lips. When the mouth stays open, that balance changes. * In growing children, persistent mouth breathing has been linked to a narrow upper jaw, crowded teeth and changes in the direction of jaw growth. * When enlarged adenoi

Do You Know? For patients. Teeth are not only for chewing. They keep a record of how you grew and how you live. What teeth record* Growth lines: enamel and dentine are laid down in tiny daily and weekly layers, a little like tree rings. * Birth: a distinct line, called the neonatal line, marks the moment of birth in the teeth that were forming at that time. * Childhood illness and nutrition can leave visible bands in enamel that formed during that period. * Diet and habits: a

Do You Know? For patients. Today's fillings replace lost tooth structure with man-made materials. Research is moving towards treatments that help the tooth repair itself. What is already used* Bioactive calcium silicate materials are already used to protect the nerve of a tooth and encourage it to lay down a new layer of dentine. * Keeping part of the nerve alive (vital pulp therapy) is now an established option in selected teeth. What is still in research* Using the tooth's

Do You Know? For patients. Saliva does far more than keep your mouth wet. What saliva does* Washes away food and neutralises acid after eating and drinking. * Supplies calcium and phosphate that help repair early enamel damage. * Contains antibodies and enzymes that control bacteria. * Helps you taste, chew, swallow and speak. A window on healthSaliva carries many of the same markers found in blood. Researchers are developing saliva tests for conditions such as cancers and in

Do You Know? For patients. Vitamin D is known for helping the body absorb calcium. Its role in the mouth reaches further, but the evidence is still developing. What we know* Vitamin D helps the gums' defences: it supports the protective lining and the production of natural antibacterial substances. * Low vitamin D has been linked with gum disease and decay in observational studies, but these links may partly reflect other health and lifestyle factors. * A 2026 review of trial

Do You Know? For patients. Your teeth sit where they do because of a balance of gentle, constant forces from the tongue on the inside and the lips and cheeks on the outside. How it works* The resting pressure of the tongue and lips, held for hours each day, matters more than the brief forces of chewing or swallowing. * Habits that change that balance, such as a low tongue posture, mouth breathing, thumb sucking or lip biting, can move teeth over time. * This is also why teeth

Do You Know? For patients. During deep sleep, the brain clears waste products more efficiently. Researchers call this the glymphatic system. What the research shows* In a landmark study in mice, sleep increased the space between brain cells by about 60%, speeding up the removal of waste such as beta-amyloid. * Studies in people are still developing, but they point the same way: good, unbroken sleep matters for the brain. Where the mouth comes in* Snoring, mouth breathing and