Dental Explorer, Ergonomic and Autoclavable Silicone Handle Instrument, DE, 5H. Rigid type. The explorer provides the tactile information to the clinicianÕs fingers and is used to locate calculus deposits, tooth surface irregularities, defective margins on restorations, decalcified areas and carious lesions. For the quality assurance, this explorer is made with US materials. This Explorer type is ideal for sub gingival calculus and caries detection.