Due to the low quality , small sample sizes or lack of adequate reporting of the outcome data , the evidence is inadequate to cl aim or refute a difference in postoperative sensitivity between different dental liners .
Since August 2009 , members of the Primary Care Dentistry Research Forum ( www.dentistry research .org ) have taken part in an online vote to identify questions in day-to-day practice that they felt most needed to be answered with conclusive research .
Short-term clinical evaluation of post-operative sensitivity with bonded amalgams.
PURPOSE To compare the in vivo short-term post-operative sensitivity of teeth restored with amalgam using a  bonded resin liner vs. teeth restored using a copal varnish liner . MATERIAL S AND METHODS 20 patients received Class I or Class II contralaterally paired restorations which were placed at the same appointment . All restorations were placed by the same operator using an identical technique except that , in each r and omized pair , one was lined with an adhesive resin ( Scotchbond Multi- Purpose Plus ) while the other was lined with copal varnish . ( Plastodent ) Patients were provided visual analog scale response forms , instructed in their use , and requested to complete and return a form reporting their degree of sensitivity at baseline and on days 1 , 3 , 7 , 14 , and 30 post-operatively . Data from the response forms were analyzed for differences using a paired t-test . RESULTS A response rate of 90 % ( 18/20 ) was achieved for the complete 30-day assessment . Increases in thermal sensitivity beyond baseline were seen in 13 of the 18 subjects involving 12 restorations lined with copal varnish and 10 lined with adhesive resin . Typically , sensitivity peaked on day 1 or day 3 and diminished to pre-operative levels by day 30 . Only three subjects reported greater sensitivity at day 30 than at baseline . No significant difference in post-operative sensitivity was found between the two cavity lining material s at any post-operative interval
Due to the low quality , small sample sizes or lack of adequate reporting of the outcome data , the evidence is inadequate to cl aim or refute a difference in postoperative sensitivity between different dental liners .
Since August 2009 , members of the Primary Care Dentistry Research Forum ( www.dentistry research .org ) have taken part in an online vote to identify questions in day-to-day practice that they felt most needed to be answered with conclusive research .