Dental Explorer # 5 Hard Tip, EXD5H Dental Explorer, DE, 5H. Stainless Steel Handle. Rigid type Tips. The explorer provides the tactile information to the clinicians 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.