Periodontal pocket measurements are taken by inserting a periodontal probe, held parallel to the tooth, under the free gingival margin. The measurements are recorded at four to six points on each tooth. The loss of attachment apparatus is determined by either the direct measurement from the CEJ to the base, or by subtracting from the total probing depth the distance from the gingival margin to the cement-enamel junction.
Measurements contribute to other periodontal indices in therapy decisions.
A Labrador Retriever whose maxillary canine has 9 mm pocket depth and 8 mm attachment loss from Grade 4 periodontal disease. An apical reposition flap may be performed to decrease the pocket depth saving the tooth. A gingivectomy is performed to eliminate the pseudopocket. A Poodle with 2 mm pocket depth and 8 mm attachment loss around the maxillary canine resulting in gingival recession. Here, your patient has normal probing depth with significant attachment loss Extraction may be the treatment of choice.