Hypnosis reduces temporomandibular disorder pain

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The aim of this trial was to assess the effect of hypnosis on self-reported pain and the blink reflex (BR) in temporomandibular disorder. Forty three patients with a diagnosis of persistent (>6 months) myofascial pain Iab  according to the Research Diagnostic Criteria (RDC/TMD) were  randomized to hypnosis or control (nonhypnotic relaxation). Pain intensity was assessed [read the full story…]

5 to 7% of patients have persistent pain after root canal treatment

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This  systematic review was first published in 2010 The American Dental Association Centre for Evidence-based Dentistry has now published a critical summary of this review. They found the review to be comprehensive using STROBE criteria to assess study quality.Eighteen of the 26 studies were prospective. However they noted that the reviewers did not report the [read the full story…]

NSAIDs and the risk of head and neck cancer

Assorted pills

Non-steroidal anti-inflammatory drugs (NSAIDs) use  has been associated with a reduced risk of a number of  cancers. The mechanism is thought to be via the inhibitory action on the cyclooxygenase (COX) enzyme, COX-2.  The aim of this review was to investigate the association between NSAID/aspirin use and risk of head and neck cancer (HNC). The [read the full story…]

A causal association between smoking and tooth loss is likely

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The aim of this review was to evaluate the causal association between smoking and tooth loss. The reviewers searched Medline, Embase, the Cochrane Central Register of Controlled Trials (CENTRAL) and hand searched a number of relevant journals. English language studies investigating associations between smoking and tooth loss and reporting the effect size were included. Quality [read the full story…]

Low educational attainment associated with an increased risk of periodontitis

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The aim of this review was to determine the extent to which educational attainment influences risk of periodontitis in adults aged 35+ years in the general population. The authors searched the Embase and Medline databases, reference lists of identified articles,  personal databases and contacted experts in the field.  general population-based studies conducted in adults aged [read the full story…]

Vacuum-formed and Hawley retainers equally effective at preventing orthodontic relapse at one year

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Long term studies have shown that relapse occurs  in around 70%  of  orthodontic treatment.  However it is difficult to predict either those cases that will relapse or the degree to which it will occur. The aim of the this study was to compare the effectiveness of vacuum-formed and Hawley retainers in maintaining arch width as [read the full story…]

Rapid maxillary expansion and headgear, or headgear alone increases eruption success rate of palatally displaced canines

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The prevalence of palatally displaced permanent canine teeth varies between 0.8 and 5.2 % . The aim of this trial was to test the effectiveness of cervical pull headgear  and  rapid maxillary expansion and cervical pull headgear on the eruption of palatally displaced canines. They  randomized 64 patients with to one of three groups: cervical [read the full story…]

Are there fewer complications with closed reductions of mandibular fractures

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This systematic review was first published in  2008. The American Dental Association Center for Evidence-based Dentistry has now published a critical summary of the review. They highlighted as number of  methodological issues with the review and all of the included studies were retrospective studies. They found that the review was :- unable to demonstrate a [read the full story…]

Temporary anchorage devices are reliable options for orthodontic anchorage

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This systematic review was first published in  2009. The American Dental Association Center for Evidence-based Dentistry has now published a critical summary of the review. They identified some issues with the clarity of the inclusion and exclusion criteria and the thoroughness of the search strategy, and the reporting quality. However there was consistency among the [read the full story…]

Human papillomaviruses strongly associated with oral cancer

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The role of human papillomaviruses (HPV) in the development of premalignant and oral squamous cell carcinoma (OSCC) is a hotly debated topic despite recognition of its role in cervical squamous cell carcinoma of uteri. The main aim of this systematic review was to calculate the pooled estimates of the odds ratio (OR) for the association [read the full story…]