Training opportunities: systematic reviews and related topics

The COVID-19 pandemic has meant that face-to-face training in systematic review methodology has been largely postponed.

However, there are some opportunities to get involved online!

Cochrane has put together a suite of interactive and online learning opportunities. Follow the links to find out more!

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Methods of removing wisdom teeth from the lower jaw

The removal of wisdom teeth is a common operation, but it can cause short-and long‐term side effects. People may have their wisdom teeth removed if they are causing pain or infection, or if they are damaging other teeth or not breaking through the gum properly. Surgery has a risk of complications. One of the most common is dry socket. This is when a blood clot fails to form in the socket that the tooth has come out of, or the clot is disturbed before the socket has properly healed. The bones and nerves underlying the socket may be exposed, and it can be a very painful condition. Continue reading

Should disease-free wisdom teeth be extracted to stop them causing issues in the future?

Wisdom teeth generally grow and appear between the ages of 17 and 26 years. They are the last teeth to come through and normally grow into a position close to other teeth. Space for wisdom teeth can be limited and so they often fail to come through, or only partly come through. In most cases, this occurs when other teeth are blocking the growth of wisdom teeth, and act as a barrier. A wisdom tooth like this is known as an “impacted tooth”. An impacted wisdom tooth is called ‘asymptomatic’ and ‘disease‐free’ if there are no signs of disease affecting the wisdom tooth or the gum which supports it.

Impacted wisdom teeth can cause swelling and soreness of the gums around the wisdom teeth and decay and damage to nearby teeth. They can also cause gum and bone disease around other teeth and the development of cysts or tumours. It is generally agreed that wisdom teeth should be removed if there are signs of disease, but there is less agreement about how to manage wisdom teeth if there are no signs of disease. Continue reading

No evidence from randomized controlled trials on how to treat bleeding after tooth extraction

Our review on the treatment of post-extraction bleeding has been updated, but there is still no evidence on the topic from randomized controlled trials…

Cochrane Oral Health

Female at the dentistAfter tooth extraction, it is normal for the area to bleed and then clot, generally within a few minutes. It is abnormal if bleeding continues without clot formation, or lasts beyond 8 to 12 hours; this is known as post-extraction bleeding (PEB). Such bleeding incidents can cause distress for patients, who might need emergency dental consultations and interventions. The causes of PEB can be local, a systemic disease, or a medication. To control this bleeding, many local and systemic methods have been practised, based on the clinician’s expertise. To inform clinicians about the best treatment, evidence is needed from studies where people have been randomly allocated to one of at least two different groups, which receive different treatments, or no treatment (i.e. ‘randomised controlled trials’ or RCTs).

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Do the drugs work? Cochrane evidence on antibiotics in dentistry

799px-Medication_amoxycillin_capsule13-17 November is World Antibiotic Awareness Week. The World Health Organization (WHO) has said that antibiotic resistance is:  “one of the biggest threats to global health, food security, and development today”. Antibiotics are used to prevent and treat bacterial infections, but if over-used they can cause bacteria to change and become resistant. This makes infections more difficult to treat, and results in longer hospital stays, higher medical costs and increased mortality (World Health Organization, 2017).

Antibiotics are still commonly used in dentistry, Cope et al (2014) estimate that 8-10% of antibiotics used in primary care are prescribed by dentists in some parts of the world. Their effectiveness has been explored by several Cochrane Oral Health reviews over the years, looking at some of the scenarios where they might be prescribed. Today we have a look back over the evidence… Continue reading

Preventing oral cancer by treating oral leukoplakia: limited evidence

shutterstock_163829423Oral leukoplakia is a white patch formed in the mouth lining that cannot be rubbed off. It often does not hurt and may go unnoticed for years. People with leukoplakia develop oral cancer more often than people without it. Preventing this is critical; rates of oral cancer survival longer than five years after diagnosis are low. Drugs, surgery and other therapies have been tried for treatment of oral leukoplakia. Medical and complementary treatments can be locally applied (i.e. directly onto the white patch) or systemic (affecting the whole body, e.g. taken as a pill). Continue reading

Answering the questions: new titles registered with Cochrane Oral Health

Answering questionsLast month we had a meeting of our international editorial team to discuss the new title applications we had received over the last 6 months. We had a lot of applications, and unfortunately were not able to register all of them. We decided that five titles should go forward to protocol stage, from teams in India, Malaysia, and a team based in Germany, the UK and Yemen.

Look out for the protocols coming soon on the Cochrane Library!


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