<sod>* Clean and dry operating field (saliva, blood). For dentistry procedures involving bonding with adhesives or cements it is to be encouraged as the operative field must avoid contamination in order to achieve maximum bond strength between restorative material, [[Tooth enamel|enamel]] and [[dentin]]. Poor bonding may compromise the success or longevity of the restorations. There is some evidence to suggest that the use of a rubber dam may increase the survival time of dental restorations compared to the use of cotton rolls as an isolation method.<ref>{{Cite book|url=http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD009858.pub2/abstract|title=Cochrane Database of Systematic Reviews|last=Wang|first=Yan|last2=Li|first2=Chunjie|last3=Yuan|first3=He|last4=Wong|first4=May CM|last5=Zou|first5=Jing|last6=Shi|first6=Zongdao|last7=Zhou|first7=Xuedong|date=2016-09-20|publisher=John Wiley & Sons, Ltd|isbn=14651858|language=en|doi=10.1002/14651858.cd009858.pub2/full#cd009858-bbs2-0030}}</ref> <eod>
<sod>* Clean and dry operating field (saliva, blood). For dentistry procedures involving bonding with adhesives or cements it is to be encouraged as the operative field must avoid contamination in order to achieve maximum bond strength between restorative material, [[Tooth enamel|enamel]] and [[dentin]]. Poor bonding may compromise the success or longevity of the restorations. There is some evidence to suggest that the use of a rubber dam may increase the survival time of dental restorations compared to the use of cotton rolls as an isolation method.<ref>{{Cite book|url=http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD009858.pub2/abstract|title=Cochrane Database of Systematic Reviews|last=Wang|first=Yan|last2=Li|first2=Chunjie|last3=Yuan|first3=He|last4=Wong|first4=May CM|last5=Zou|first5=Jing|last6=Shi|first6=Zongdao|last7=Zhou|first7=Xuedong|date=2016-09-20|publisher=John Wiley & Sons, Ltd|issn=1465-1858|language=en|doi=10.1002/14651858.cd009858.pub2}}</ref> <eod>