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• Periodontal membrane or ligament
The periodontal ligament attaches the roots to the alveolar bone of the jaw.
o It has both a nerve and blood supply
o The ligament provides an elastic cushion between the tooth and the
bone. Slight movement of a tooth is made possible by the ligament.
o Teeth are not rigidly joined to bone. There is flexibil
ity.
.
Fif.1. Tooth’s anatomy
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