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A comment on Our relationship with teeth is uneven, messy and grim. Parent comment
A quick web search turns up many images and explanations, e.g. http://www.brianpalmerdds.com/pdf/adsm_section_c.pdf
A quick web search turns up many images and explanations, e.g. http://www.brianpalmerdds.com/pdf/adsm_section_c.pdf