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': 'The lower denture bearing area has diﬀerent compressibility. Which is the most compressible tissue in lower arch? \nSelect and explain. \nA. Buccal shelf, B. Premylohyoid region, C. Labial sulcus, D. Retromolar pad', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Buccal shelf area is a stress bearing area, however it is not compressible.\nRetromolar pad has glandular tissues, loose areolar connective tissue and muscle fibres. It is more compressible but has no underlying compact bone.\n\nANATOMICAL LANDMARKS IN THE MANDIBLE\nThey can be broadly grouped into:\nLimiting structures\n\nLabial frenum\nLabial vestibule\nBuccal frenum\nBuccal vestibule\nLingual frenum\nAlveololingual sulcus\nRetromolar pads\nPterygomandibular raphe.\n\nSupporting structures\n\nBuccal shelf area\nResidual alveolar ridge.\n\nRelief areas\n\nCrest of the residual alveolar ridge\nMental foramen\nGenial tubercles\nTorus mandibularis.', 'role': 'assistant'}]