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12 I I clinical report _ crown preparation line exposure and haemorrhage control. In addition, this simple, conservative instrument can make cord placement quick and simple by preserving the gingi- val architecture. TheParkellunitwitha#118tipallowsthecreation of a very conservative trough or trench around a tooth. In combination with good visualisation using the OM and good patient and procedural manage- ment with the rubber dam, we can reliably create a finish line, expose it, place a cord if necessary and impress it. With a radiosurgical unit, inflamed tissue can be removed such that the healthier tissue is exposed to our haemostatic agents. Healthy haemorrhagic tis- sue responds better to haemostatic agents than in- flamed haemorrhagic tissue does. When inflamed tissue is encountered, use of high magnification and the radiosurgical tip to conservatively contour or re- move this nuisance tissue can provide a predictable result. Reducing tissue thickness but not modifying tissue height can leave the gingival tissue in proper position such that we achieve nice aesthetics in our final result. _Handpiece and bur choices Thefinalitemandofleastconcerninthisprotocol are handpiece and bur choices. There is existing debatebetweenelectricversusair-drivenhandpieces and regarding which bur is best for which task. Spec- ifying a particular handpiece or bur would be similar to directing an artist regarding which paintbrush to use.Whatworksinone’shandsisthemostimportant factor and that changes from individual to individual and situation to clinical situation. If a practitioner follows the diagnosis, magnification, isolation and tissuemanagementprotocol,thenburandhandpiece choiceswillfallintoplaceontheirownwithtimeand experience. I typically use an air-driven handpiece and an assortment of Axis turbo diamonds. roots3_2010 Fig. 6a Fig. 6b Fig. 7a Fig. 7b Fig. 8a Fig. 8b