This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'A 7 year old male patient presents to the clinic for routine dental examination and has history of frequent snacking and sugary beverages. Intraoral examination shows multiple pit and fissure caries and subsurface enamel porosity manifesting as milky white opacity. Tactile probing should not be used in this case because of all of the following EXCEPT? \nSelect and explain. \nA. Insertion  of  the  explorer  into  the  suspected lesion inevitably disrupts the surface layer covering very early lesions, thereby eliminating the possibility for remineralization of the decalcified area, B. Probing of lesions and suspected lesions results in the transport of  cariogenic  bacteria  from  one area  to another, C. Frank lesions requiring restoration are generally apparent visually  without  the  need  for  probing., D. It may induce spontaneous bleeding', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Traditionally, dentists have relied upon a visual-tactile radiographic\xa0 procedure\xa0 for\xa0 the detection\xa0 of\xa0 dental caries. This procedure involves the visual identification of demineralized\xa0 areas\xa0 (typically\xa0 white\xa0 spots)\xa0 or\xa0 suspicious pits or fissures and the use of the dental explorer to determine the\xa0 presence of a\xa0 loss of continuity\xa0 or breaks in the enamel and to assess the softness or resilience of the enamel. Caries lesions located on interproximal tooth surfaces\xa0 have\xa0 generally\xa0 been\xa0 detected\xa0 with\xa0 the\xa0 use\xa0 of\xa0 bitewing radiographs. These procedures have been used routinely in virtually every dental office in the United States for the past 50 years. Tactile probing with an explorer is no longer used for caries detection in most European countries, and this protocol has now been adopted by many U.S. dental schools. The primary concerns that led to the discontinuation of the probing procedure were as follows:\n1. The\xa0 insertion\xa0 of\xa0 the\xa0 explorer\xa0 into\xa0 the\xa0 suspected lesion inevitably disrupts the surface layer covering very early lesions, thereby eliminating the possibility for remineralization of the decalcified area;\xa0\n2. The probing of lesions and suspected lesions results in the transport of\xa0 cariogenic\xa0 bacteria\xa0 from\xa0 one area\xa0 to another;\xa0 and\xa0\xa0\n3. Frank lesions requiring restoration are generally apparent visually\xa0 without\xa0 the\xa0 need\xa0 for\xa0 probing.', 'role': 'assistant'}]