Cochrane

Review question Does the use of chlorhexidine mouthrinse (a broad spectrum antiseptic) in addition to other conventional tooth cleaning help to control and improve gingivitis (inflammation of the gums)? Does the frequency of rinsing or the concentration of the solution affect the result and are there any undesirable side effects? Background Gingivitis ...

Background Orthodontic treatment involves using fixed or removable dental braces to correct the positions of teeth. The success of dental braces depends partly on the metal attachments (brackets and bands) being glued to the teeth so that they do not become detached during treatment. Brackets (metal squares) are usually attached to teeth other than ...

Review question Orthodontic treatment (teeth braces) can be painful, particularly following initial brace placement and later adjustments, for a week or more. We examined the merits of methods to reduce pain during orthodontic treatment without the need for painkillers. Background Pain is usual during orthodontic treatment and may make some people ...

Review question This review examined the effects of different materials used for retrograde filling in children and adults for whom this treatment is necessary in order to save the tooth. Background The living part of the tooth, also known as the tooth pulp, can become irreversibly inflamed as a result of damage or bacterial infection due to tooth ...

Review question Is there any difference in effectiveness when undertaking root canal treatment in one visit compared to over several visits, and what are the effects on pain and complications, regardless of whether medication is used? Background This is an update of a review first published in 2007. Root canal treatment, or endodontic treatment, ...

Review question Which treatments help to relieve symptoms for people with burning mouth syndrome (BMS)? Background BMS is a common painful condition. Symptoms include burning, dryness or uncomfortable sensations in the mouth and changes to taste, with no obvious underlying medical or dental cause. BMS is usually persistent and suffered long term, ...

Review question This review was conducted to assess the effects of using liners under tooth-colored resin fillings in cavities on the biting surface (Class I) and the biting surface and side(s) (Class II) of permanent teeth in the back of the mouth in children and adults. Background Tooth decay is the most common disease affecting children and adults ...

Review question What are the effects of oral hygiene care on the incidence of ventilator-associated pneumonia in critically ill patients receiving mechanical ventilation in hospital intensive care units (ICUs)? We aimed to summarise all the available appropriate research in order to identify evidence-based care for these vulnerable patients. Background Critically ...

Review question We aimed to find out the best way to retreat patients for whom root canal therapy has failed. We wanted to know whether surgical or non-surgical retreatment was better, and if using specific materials, devices or procedures in surgery might improve healing of the lesion or reduce patient discomfort after surgery. This review updates ...

Review question Are oral appliances and functional orthopaedic appliances effective and safe for treating children with obstructive sleep apnoea syndrome? Background Obstructive sleep apnoea in children is a breathing disorder characterized by episodes of partial or complete upper airway obstruction that occur during sleep. There are various risk ...