<prompt> Which of the following is not a part of Marzouks classification?Exploratory instrumentsNon cutting instrumentsRestoration instrumentsInstruments to remove tooth structure  <response>: G.V. Black among his many contributions to modern dentistry, is credited with the first acceptable nomenclature for and classification of hand instruments. His classification system enabled both dentists and manufacturers to communicate more clearly and effectively in regard to instrument design and function.Hand instruments used in the dental operatory may be categorized as:Cutting excavators, chisels and others. Noncutting amalgam condensers, mirrors, explorers, probes.Marzouk classified instruments of operative dentistry into:Those used for exploration.Those used for removal of tooth structure.Those used for restoration of teeth.Ref: Sturdevants art and science of operative dentistry. 4th edition page 310 Operative dentistry modern theory and practice Marzouk page 57 