Tooth Decay
Caries, or tooth decay, is a preventable disease. While caries might not endanger your life, they may negatively impact your quality of life.
When your teeth and gums are consistently exposed to large amounts of starches and sugars, acids may form that begin to eat away at tooth enamel. Carbohydrate-rich foods such as candy, cookies, soft drinks and even fruit juices leave deposits on your teeth. Those deposits bond with the bacteria that normally survive in your mouth and form plaque. The combination of 
deposits and plaque forms acids that can damage the mineral structure of teeth, with tooth decay resulting.
Sensitive Teeth
Your teeth expand and contract in reaction to changes in temperature. Hot and cold food and beverages can cause pain or irritation to people with sensitive teeth. Over time, tooth enamel can be worn down, gums may recede or teeth may develop microscopic cracks, exposing the interior of the tooth and irritating nerve endings. Just breathing cold air can be painful for those with extremely sensitive teeth.
Gum Disease
Gum, or periodontal, disease can cause inflammation, tooth loss and bone damage. Gum disease begins with a sticky film of bacteria called plaque. Gums in the early stage of disease, or gingivitis, can bleed easily and become red and swollen. As the disease progresses to periodontitis, teeth may fall out or need to be removed by a dentist. Gum disease is highly preventable and can usually be avoided by daily brushing and flossing. One indicator of gum disease is consistent bad breath or a bad taste in the mouth.
Bad Breath (Halitosis)
Daily brushing and flossing helps to prevent the build-up of food particles, plaque and bacteria in your mouth. Food particles left in the mouth deteriorate and cause bad breath. While certain foods, such as garlic or anchovies, may create temporary bad breath, consistent bad breath may be a sign of gum disease or another dental problem.
Canker Sores
Canker sores (aphthous ulcers) are small sores inside the mouth that often recur. Generally lasting one or two weeks, the duration of canker sores can be reduced by the use of antimicrobial mouthwashes or topical agents. The canker sore has a white or gray base surrounded by a red border.
Orthodontic Problems
A bite that does not meet properly (a malocclusion) can be inherited, or some types may be acquired. Some causes of malocclusion include missing or extra teeth, crowded teeth or misaligned jaws. Accidents or developmental issues, such as finger or thumb sucking over an extended period of time, may cause malocclusions.
Thumbsucking
You may be concerned about your child’s thumbsucking and wonder if it is harmful, at what age your child should stop, or what could happen if your child doesn’t stop.
Sucking is a natural reflex for children. As infants get older it serves many purposes. Sucking on their thumbs, fingers, pacifiers or other objects may make babies feel secure and happy and help them learn about their world. Young children may also suck to soothe themselves. Since thumb sucking is relaxing, it may help them fall asleep.
After the permanent teeth come in, sucking may cause problems with the proper growth of the mouth and alignment of the teeth. It can also cause changes in the roof of the mouth. The intensity of the sucking is a factor that determines whether or not dental problems may result. If children rest their thumbs passively in their mouths, they are less likely to have difficulty than those who vigorously suck their thumbs. Some aggressive thumbsuckers may cause problems with their baby (primary) teeth. If you notice changes in your child’s primary teeth, consult your dentist.
Children should have ceased sucking by the time the permanent front teeth are ready to erupt. Usually children stop between the ages of two and four years.
Pacifiers can affect the teeth essentially the same ways as sucking fingers and thumbs. However, it is often an easier habit to break.
Tips:
- Praise children for not sucking, instead of scolding them when they are.
- Children often suck their thumbs when feeling insecure or needing comfort. Focus on correcting the cause of the anxiety and provide comfort to your child.
- For an older child, involve him or her in choosing the method of stopping.
- Your dentist can offer encouragement to a child and explain what could happen to their teeth if they do not stop sucking.
- If the above tips don’t work, remind the child of their habit by bandaging the thumb or putting a sock on the hand at night. Your dentist or pediatrician may prescribe a bitter medication to coat the thumb or the use of a mouth appliance.