Preventive and management strategies include the following:

- Avoid sweet and acid foods. Even low sugar contained in fruit is bad for the teeth since it is the sugar/acid exposure time which erodes the teeth, not the amount of sugar.

- Modifying the pH of the food or beverage contributing to the problem, or changing lifestyle to avoid the food or beverage.

- Rinsing immediately after drinking or eating.

- Drinking through a straw

- Avoid abrasive forces. Use a soft bristled toothbrush and brush gently. Avoid brushing immediately after consuming acidic food and drink as teeth will be softened. Leave at least half an hour of time in between. Rinsing with water is better than brushing after consuming acidic foods and drinks.

- Using a remineralizing agent, such as sodium fluoride solution in the form of a fluoride mouthrinse, tablet, or lozenge, immediately before brushing teeth.

- Applying fluoride gels or varnishes to the teeth.

- Drinking milk or using other dairy products.

- Dentine bonding agents applied to areas of exposed dentin

- Use a neutralizing agent such as antacid tablets only as a last-resort. They have negative long-run effects.

- Treating the underlying medical disorder or disease.

At-home treatments include desensitizing toothpastes or dentifrices, potassium salts, mouthwashes and chewing gums.

A variety of toothpastes are marketed for dentin hypersensitivity, including compounds such as strontium chloride, strontium acetate, arginine, calcium carbonate, hydroxyapatite and calcium sodium phosphosilicate. Desensitizing chewing gums and mouthwashes are also marketed.

Potassium-containing toothpastes are common; however, the mechanism by which they may reduce hypersensitivity is unclear. Animal research has demonstrated that potassium ions placed in deep dentin cavities cause nerve depolarization and prevent re-polarization. It is not known if this effect would occur with the twice-daily, transient and small increase in potassium ions in saliva that brushing with potassium-containing toothpaste creates. In individuals with dentin hypersensitivity associated with exposed root surfaces, brushing twice daily with toothpaste containing 5% potassium nitrate for six to eight weeks reduces reported sensitivity to tactile, thermal and air blast stimuli. However, meta analysis reported that these individuals' subjective report of sensitivity did not significantly change after six to eight weeks of using the potassium nitrate toothpaste.

Desensitizing toothpastes containing potassium nitrate have been used since the 1980s while toothpastes with potassium chloride or potassium citrate have been available since at least 2000. It is believed that potassium ions diffuse along the dentinal tubules to inactivate intradental nerves. However, , this has not been confirmed in intact human teeth and the desensitizing mechanism of potassium-containing toothpastes remains uncertain. Since 2000, several trials have shown that potassium-containing toothpastes can be effective in reducing dentin hypersensitivity, although rinsing the mouth after brushing may reduce their efficacy.

Studies have found that mouthwashes containing potassium salts and fluorides can reduce dentine hypersensitivity, although rarely to any significant degree. , no controlled study of the effects of chewing gum containing potassium chloride has been made, although it has been reported as significantly reducing dentine hypersensitivity.

Nano-hydroxyapatite (nano-HAp) is considered one of the most biocompatible and bioactive materials, and has gained wide acceptance in dentistry in recent years. An increasing number of reports have shown that nano-hydroxyapatite shares characteristics with the natural building blocks of enamel having the potential, due to its particle size, to occlude exposed dentinal tubules helping to reduce hypersensitivity and enhancing teeth remineralization.

For this reason, the number of toothpastes and mouthwashes that already incorporate nano-hydroxyapatite as a desensitizing agent is increasing.

In order for successful treatment of abrasion to occur, the aetiology first needs to be identified. The most accurate way of doing so is completing a thorough medical, dental, social and diet history. All aspects needs to be investigated as in many cases the cause of abrasion can be multi-factorial. Once a definitive diagnosis is completed the appropriate treatment can commence.

Treatment for abrasion can present in varying difficulties depending on the current degree or progress caused by the abrasion. Abrasion often presents in conjunction with other dental conditions such as attrition, decay and erosion however the below treatment is for abrasion alone. Successful treatment focuses on the prevention and progression on the condition and modifies the current habit/s instigating the condition.

In-office treatments may be much more complex and they may include the application of dental sealants, having fillings put over the exposed root that is causing the sensitivity, or a recommendation to wear a specially made night guard or retainer if the problems are a result of teeth grinding.

Other possible treatments include fluorides are also used because they decrease permeability of dentin "in vitro". Also, potassium nitrate can be applied topically in an aqueous solution or an adhesive gel. Oxalate products are also used because they reduce dentin permeability and occlude tubules more consistently. However, while some studies have showed that oxalates reduced sensitivity, others reported that their effects did not differ significantly from those of a placebo. Nowadays, dentin hypersensitivity treatments use adhesives, which include varnishes, bonding agents and restorative materials because these materials offer improved desensitization.

Low-output lasers are also suggested for dentin hypersensitivity, including GaAlAs lasers and . They are thought to act by producing a transient reduction in action potential in C-fibers in the pulp, but Aδ-fibers are not affected.

Acidic drinks and foods lower the pH level of the mouth so consuming them causes the teeth to demineralise. Drinks low in pH levels that cause dental erosion include fruit juices, sports drinks, wine, beer and carbonated drinks. Orange and apple juices are common culprits among fruit juices. Carbonated drinks such as colas, lemonades are also very acidic, as are fruit-flavoured drinks and dilutables. Frequency rather than total intake of acidic juices is seen as the greater factor in dental erosion; infants using feeding bottles containing fruit juices (especially when used as a comforter) are therefore at greater risk of acid erosion.

Saliva acts as a buffer, regulating the pH when acidic drinks are ingested. Drinks vary in their resistance to the buffering effect of saliva. Studies show that fruit juices are the most resistant to saliva's buffering effect, followed by, in order: fruit-based carbonated drinks and flavoured mineral waters, non-fruit-based carbonated drinks, sparkling mineral waters; Mineral water being the least resistant. Because of this, fruit juices in particular, may prolong the drop in pH levels.

A number of medications such as vitamin C, aspirin and some iron preparations are acidic and may contribute towards acid erosion.

When a diagnosis of bruxism has been confirmed, it is recommended that the patient buy a full-coverage acrylic occlusal splint, such as a Michigan Splint or Tanner appliance, to prevent further bruxism. Patients must be monitored closely, with clinical photographs 6–12 monthly to evaluate if the tooth surface loss is being prevented.

If the aetiology of abrasion is due to habitual behaviours, the discontinuation and change of habit is critical in the prevention of further tooth loss. The correct brushing technique is pivotal and involves a gentle scrub technique with small horizontal movements with an extra-soft/soft bristle brush. Excessive lateral force can be corrected by holding the toothbrush in a pen grasp or by using the non-dominant hand to brush. If abrasion is the result of an ill-fitting dental appliance, this should be corrected or replaced by a dental practitioner and should not be attempted in a home setting.

Cosmetic or functional intervention may be required if tooth surface loss is pathological or if there has been advanced loss of tooth structure. The first stage of treatment involves managing any associated conditions, such as fractured teeth or sharp cusps or incisal edges. These can be resolved by restoring and polishing sharp cusps. Then, desensitizing agents such as topical fluoride varnishes can be applied, and at home desensitising toothpastes recommended. Many restorative options have been proposed, such as direct composite restorations, bonded cast metal restorations, removable partial dentures, orthodontic treatment, crown lengthening procedures and protective splints. The decision to restore the dentition depends on the wants and needs of the patient, the severity of tooth surface loss and whether tooth surface loss is active. The use of adhesive materials to replace lost tooth structure can be performed as a conservative and cost-effective approach before a more permanent solution of crowns or veneers is considered.

Treatment for TRs is limited to tooth extraction because the lesion is progressive. Amputation of the tooth crown without root removal has also been advocated in cases demonstrated on a radiograph to be type 2 resorption without associated periodontal or endodontic disease because the roots are being replaced by bone. However, X-rays are recommended prior to this treatment to document root resorption and lack of the periodontal ligament.

Tooth restoration is not recommended because resorption of the tooth will continue underneath the restoration. Use of alendronate has been studied to prevent TRs and decrease progression of existing lesions.

Abfraction is loss of tooth substance at the cervical margins, purportedly caused by minute flexure of teeth under occlusal loading. The term is derived from the Latin words "ab" and "functio" meaning ‘away’ and ‘breaking’ respectively. Abfraction presents as triangular lesions along the Cervical margins of the buccal surfaces of the teeth where the enamel is thinner and therefore, in the presence of occluding forces, is prone to fracture. Whether abfraction exists or not is debated.

Discoloration of the front teeth is one of the most common reasons people seek dental care. However, many people with teeth of normal shade ask for them to be whitened. Management of tooth discoloration depends on the cause. Most discoloration is harmless and may or may not be of cosmetic concern to the individual. In other cases it may indicate underlying pathology such as pulp necrosis or rarely a systemic disorder.

Most extrinsic discoloration is readily removed by cleaning the teeth, whether with "whitening" (i.e., abrasive) toothpaste at home, or as treatment carried out by a professional (e.g., scaling and/or polishing). To prevent future buildup of extrinsic stains, identification of the cause (e.g., smoking) is required.

Intrinsic discoloration generally requires one of the many types of tooth bleaching. Alternatively the appearance of the tooth can be hidden with dental restorations (e.g., composite fillings, veneers, crowns).

Extrinsic discolorations are common and have many different causes. The same range of factors are capable of staining the surface of restorations (e.g., composite fillings, porcelain crowns). Some extrinsic discolorations that are allowed to remain for a long time may become intrinsic.

- Dental plaque: Although usually virtually invisible on the tooth surface, plaque may become stained by chromogenic bacteria such as "Actinomyces" species.

- Calculus: Neglected plaque eventually calcifies, and leads to formation of a hard deposit on the teeth, especially around the gumline. The color of calculus varies, and may be grey, yellow, black or brown.

- Tobacco: Tar in smoke from tobacco products (and also smokeless tobacco products) tends to form a yellow-brown-black stain around the necks of the teeth above the gumline.

- Betel chewing.

- Certain foods and drinks. Foods, such as vegetables, that are rich with carotenoids or xanthonoids can stain teeth. Ingesting colored liquids like sports drinks, cola, coffee, tea and red wine can discolor teeth.

- Certain topical medications.

- Chlorhexidine (antiseptic mouthwash) binds to tannins, meaning that prolonged use in persons who consume coffee, tea or red wine is associated with extrinsic staining (i.e., removable staining) of teeth.

- Cetylpyridinium chloride, which is found in many antimicrobial mouthwashes, can result in staining due to dead bacterial residue.

- Metallic compounds. Exposure to such metallic compounds may be in the form of medication or other environmental exposure. Examples include iron (black stain), iodine (black), copper (green), nickel (green) and cadmium (yellow-brown).

- Antibiotics. Tetracycline and its derivatives are capable of intrinsic discoloration (discussed below). However other antibiotics may form insoluble complexes with calcium, iron and other elements that cause extrinsic staining.

Erosion is chemical dissolution of tooth substance caused by acids, unrelated to the acid produced by bacteria in dental plaque. Erosion may occur with excessive consumption of acidic foods and drinks, or medical conditions involving repeated regurgitation and reflux of gastric acid. derived from the Latin word "erosum", which describes the action ‘to corrode’. This is usually on the palatal (inside) surfaces of upper front teeth and the occluding (top) surfaces of the molar teeth.

- Gastroesophageal reflux disease (GERD)

- Vomiting, e.g. bulimia, alcoholism

- Rumination

- Eructation (burping)

- Dietary - liquids of low pH and high titratable acids.

There have not been any controlled studies on meth mouth, and several of its aspects are unclear. Although the condition has been popularized by media coverage and case reports, no systematic studies have been conducted to conclusively tie methamphetamine use to symptoms that are commonly described as meth mouth. There are few ties between dental scholars and those who study drug use, and it can be difficult for dental researchers to find methamphetamine users to study.

Whether the drug has a unique effect on dental health has been questioned by a few academics, who note that the long-term use of several other drugs sometimes causes dental problems. Several academic reviews have contradicted this perspective, affirming meth mouth's status as a discrete condition. In favor of its unique status, these reviews cite the differences between methamphetamine-caused caries and those that occur for other reasons, such as cocaine use, as well as the scope of the tooth decay found in some long-term methamphetamine users.

If there is persistent continuation of inflammation and bleeding, a prescription of antiplaque rinse would be useful.

Meth mouth is very difficult to treat unless the patient stops using methamphetamine; persistent drug use makes changes in hygiene or nutrition practices unlikely. Many drug users lack access to dental treatment, and few are willing to participate in such a course of action, often because of poverty. Those who are willing to seek dental treatment often resist discussing their drug use. Providing dental treatment to individuals who use methamphetamine can also be dangerous, because the potential combination of local anesthetic and methamphetamine can cause serious heart problems. There is also an increased risk of serious side effects if opioid medications are used in the patient's treatment.

Treatment of meth mouth usually attempts to increase salivary flow, halt tooth decay, and encourage behavioral changes. Toothpaste with fluoride is very important to the restoration of dental health. Only prescription fluoride rinses can adequately treat the condition. Sialogogues, drugs that increase the amount of saliva in the mouth, can be used to treat dry mouth and protect against dental health problems. Pilocarpine and cevimeline are sialogogues approved by the Food and Drug Administration (FDA) to treat low salivation caused by Sjogren's syndrome and may have the potential to effectively treat dry mouth caused by methamphetamine use.

Education about oral hygiene for long-term methamphetamine users is sometimes required. Changes in diet are often necessary for recovering drug users that are receiving dental treatment, and the use of sugar-free gum may be beneficial. The consumption of water and the avoidance of beverages with a diuretic (dehydrating) effect can also help patients with meth mouth.

True dental caries is uncommon among companion animals. Although it has not been accurately documented in cats, the incidence of caries in dogs has been estimated at approximately 5%. The term "feline cavities" is commonly used to refer to TRs; however, sacchrolytic acid-producing bacteria are not involved in this condition.

There are many possible causes of gingival bleeding. The main cause of gingival bleeding is the formation and accumulation of plaque at the gum line due to improper brushing and flossing of teeth. The hardened form of plaque is calculus. An advanced form of gingivitis as a result of formation of plaque is periodontitis. Other causes that can exacerbate gingival bleeding include:

- placement of new dentures

- tooth or gum infection

- diabetes mellitus

- idiopathic thrombocytopenic purpura

- leukemia

- malnutrition

- use of aspirin and anticoagulants(blood thinners) such as warfarin and heparin

- hormonal imbalances during puberty and pregnancy

- iron overload

Other less common causes are:

- vitamin C deficiency (scurvy) and vitamin K deficiency

- dengue fever

Xerostomia has been used as a test to detect lies, which relied on emotional inhibition of salivary secretions to indicate possible incrimination.

Xerostomia is a very common symptom. A conservative estimate of prevalence is about 20% in the general population, with increased prevalences in females (up to 30%) and the elderly (up to 50%).

"Hole in the head can be reversed by removing all activated carbon and conducting large percentage water changes. Greater than 90% water changes may need to be done to reduce the effects of activated carbon. More commonly, cures are made by moving the fish to a new aquarium that has never had fish develop HLLE in it.

To prevent AC from developing, protective measures could be undertaken such as avoiding mid-day sun, or use of a broad-brimmed hat, lip balm with anti UVA and UVB ingredients (e.g. para-aminobenzoic acid), or sun blocking agents (e.g. zinc oxide, titanium oxide) prior to sun exposure.

Treatment is cause-related, but also symptomatic if the underlying cause is unknown or not correctable. It is also important to note that most ulcers will heal completely without any intervention. Treatment can range from simply smoothing or removing a local cause of trauma, to addressing underlying factors such as dry mouth or substituting a problem medication. Maintaining good oral hygiene and use of an antiseptic mouthwash or spray (e.g. chlorhexidine) can prevent secondary infection and therefore hasten healing. A topical analgesic (e.g. benzydamine mouthwash) may reduce pain. Topical (gels, creams or inhalers) or systemic steroids may be used to reduce inflammation. An antifungal drug may be used to prevent oral candidiasis developing in those who use prolonged steroids. People with mouth ulcers may prefer to avoid hot or spicy foods, which can increase the pain. Self-inflicted ulceration can be difficult to manage, and psychiatric input may be required in some people.

Oral ulceration is a common reason for people to seek medical or dental advice. A breach of the oral mucosa probably affects most people at various times during life. For a discussion of the epidemiology of aphthous stomatitis, see Aphthous stomatitis#Epidemiology.

The most accepted cause that has the most evidence is the use of activated carbon in closed aquarium ecosystems.

A similar study also points to carbon as a cause of HLLE

Many other causes have been suggested, but have not been substantiated by any peer-reviewed studies.