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  • Title: Short-term clinical evaluation of post-operative sensitivity with bonded amalgams.
    Author: Kennington LB, Davis RD, Murchison DF, Langenderfer WR.
    Journal: Am J Dent; 1998 Aug; 11(4):177-80. PubMed ID: 10388372.
    Abstract:
    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. MATERIALS 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 randomized 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 materials at any post-operative interval.
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