“…classifi ed these in-offi ce treatment modalities on the basis of (1) whether they do not polymerise (varnishes/precipitants/ primers containing HEMA), (2) whether they undergo setting or polymerisation reactions (conventional glass ionomer cements, or resinreinforced glass ionomers/compomers; adhesive resin primers; adhesive resin bonding systems), (3) the use of mouthguards, (4) iontophoresis and (5) lasers. For example, the treatment of post-operative sensitivity may involve the application of a desensitiser underneath a crown or restoration (Haywood 2002 ;Jalandar et al 2012 ) as well as post-operative sensitivity following periodontal therapy , Pashley et al ( 2008 ) modifi ed Table 6.3 Summary of the published studies supporting the effi cacy of in-offi ce products (adhesives, resins and cements) Gangarosa and Park ( 1978 ), Brough et al ( 1985 ), Gupta Tarbet et al ( 1980Tarbet et al ( , 1981, Silverman ( 1985 ) Silverman et al ( 1996Silverman et al ( , 1994, Nagata et al ( 1994 ), Salvato et al ( 1992 ), Schiff et al ( 1994Schiff et al ( , 1998Schiff et al ( , 2000, Sowinski et al ( 2000Sowinski et al ( , 2001, Waraaswapati et al ( 2005 ) International) prior to the provision of an OTC desensitising toothpaste for home use (Hamlin et al 2009 ;Schiff et al 2009 ;Milleman et al 2012 ;. Generally speaking in-offi ce treatment modalities involve patients who complain of DH localised to one or two teeth with moderate to severe discomfort and as such would require immediate attention.…”