cosmetic dentistry_ beauty & science

technique _ perimeter preparation I no further. The tapered shape of the bur allows the cutting tip to encounter very few dentinal tubules, and to minimise heat build-up and vibration. This has the added advantage of decreasing patient dis- comfortandtheneedforlocalaesthetic.Traditional cutting burs remove far more enamel at any depth of cut and are far more invasive. The Fissurotomy Bur is the ideal excisional tool fortheperimeterpreparation.Itisconservativeand minimally invasive. It can access decay with little toothremoval.TheFissurotomyBuristheproactive tool for the repair of defective composite restora- tion margins. _Giomer flowable restorative materials Giomers(BeautifilIIandBeautifilFlowPlus,both SHOFU)arethelatestcategoryofhybridrestorative materials. Giomer technology represents the true integration of glass ionomers and composite resins with the benefits of both. Giomers provide the fluoridereleaseandrechargeofglassionomers,and the aesthetics, physical properties and handling of composite resins.1 Studies have demonstrated that dentine rem- ineralisation occurs at the preparation surface ad- jacent to the giomer.2 Furthermore, giomer resto- rations take up the extra fluoride ions released by fluoride toothpastes, rinses and varnishes in oral fluids. The giomer restorations then function as re- servoirs when fluoride is needed in the oral cavity.3, 4 Giomer restorations resist plaque formation owing to a film that forms on the restorative sur- face when it contacts saliva. This film consists of aluminium, silica, strontium and other ions that originate from the giomer fillers and act to inhibit bacterial adhesion.5 Fig. 3_The occlusal margins of a composite restoration have begun to break down. Fig. 4_A Fissurotomy bur (SS White) removes all decay and questionable tooth material. Fig. 5_The Perimeter Preparation is examined for any remaining decay. Fig. 6_Microabrasion is used to improve bondability of the preparation. Fig. 7_Beautibond (SHOFU) 7th generation adhesive is applied to the cavity preparation. Fig. 8_The adhesive is thoroughly air-dried. I 27cosmeticdentistry 2_2013 Fig. 3 Fig. 4 Fig. 7 Fig. 8 Fig. 5 Fig. 6