The Periodontium

The periodontium is comprised of the gingival unit and the attachment unit or attachment apparatus. The units are further broken down as follows: 1

Gingival Unit (Figure 1):

  • Free gingiva
  • Attached gingiva
  • Alveolar mucosa1

Attachment Unit (Figure 2):

  • Cementum
  • Alveolar Process
  • Periodontal Ligament
Figure 1. Gingival Unit.
Illustration showing the components of the Gingival Unit
Figure 2. Attachment Unit.
Illustration showing the components of the Attachent unit