Medical Definition of periodontal ligament
: the fibrous connective-tissue layer covering the cementum of a tooth and holding it in place in the jawbone
— called also pericementum, periodontal membrane
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“Periodontal ligament.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/periodontal%20ligament. Accessed 19 Apr. 2021.
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