This review of the links between the habit of betel quid and areca nut (BQ-AN) chewing and the prognosis of oral cancer included 11 observational studies. The findings suggest that lower 5-year survival is seen in those with a BQ-AN chewing habit.
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This review comparing primary care doctors and dentists in the referral of oral cancer included 22 mainly retrospective studies. Doctors refered sliightly more than dentists, typically 50% compared with 40% respectively.
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Manas Dave looks at a review of elective neck dissection (END) versus observation for the management of T1-2 oral squamous cell carcinoma. The review included 41 studies only 5 were RCTs the remainder being retrospective studies.
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This UK multi-centre RCT of elective neck dissection(END) for early stage oral cancer found higher rates for overall and disease free survival in those patients having END.
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This Cochrane review of interventions for preventing osteoradionecrosis of the jaws in adults with head and neck cancer undergoing curative or adjuvant (i.e. non-palliative) radiotherapy included 4 RCTs. The limited quality of the available studies means evidence regarding the interventions evaluated in this review is uncertain.
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This review of the association between toombak use and oral leukoplakia and oral squamous cell carcinoma included 8 observational studies suggesting a strong association.
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This review of the association between coffee intake and the risk of oral cancer includes 19 studies and suggestes that higher intak may be linked with a reduced risk of oral cancer.
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12 RCTs were included in this Cochrane review update of surgical approches for the management of oral and pharyngeal cancer. The certaintly of the evidence was very low as there were limited numbers of studies for each comparison.
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20 studies reporting 21 data sets were included in this review of the association of sexual behaviours and oral and oropharyngeal cancers. The review suggests that some sexual behaviours increase risk but the quality of the evidence is limited and quantitative estimates of the strength of these associations are not reliable.
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This new review investigated the effect of alcohol on 23 cancer types. They included 572 case-control and cohort studies and using meta-analysis and a dose–response meta-regression model found relative risks for heavy drinkers compared with nondrinkers and occasional drinkers were 5.13 for oral and pharyngeal cancer, 4.95 for oesophageal squamous cell carcinoma, 1.44 for colorectal, 2.65 for laryngeal and 1.61 for breast cancer.
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