Conversation: The conversation between human and AI assistant.
[|Human|] why does the mandibular 1st molar have 2 roots and the maxillary 1st molar have 3 roots Why does the upper first molar have 3 roots and the lower first molar have two? I am a dental student and there has to be a reason for this and I want to know why?
[|AI|]  Dear friend. Thanks for sharing your concern. Maxillary first molar has three roots because of the nature of maxillary bone, which is porous. At the same time the roots are long and rounded too in comparison to mandibular molar for better anchorage and adequate support. Mandibular bone itself is thick, and two roots are well-placed medially and distally in dense mandibular bone to give them a firm support and strength. Hope it helps. Any other reason, your have will be appreciated. Thanks. Take care.