OST Exam 1: Biological Width & CAL (Tyler)

Question 1

Equation of Biological Width

Answer 1

Biological Width (A) = Junctional Epithelium (C) + Connective Tissue (D)
A = C + D
ei. C=1.07mm, D=.97mm so A=2.04

Question 2

Violations of Biological Width

Answer 2

1. Inflammation
2. Increasing Probing Depths
3. Inconsistent Resorption of Alveolar Bone

Question 3

4 Characteristics of Biological Width

Answer 3

1. Biological Width is always present.
2. It’s the width cervical to the alveolar bone.
3. Physiologic zone of gingival tissue coronal to the alveolar bone crest.
4. Composed of the epithelial attachment and the gingival connective tissue attachment.

Question 4

Clinical Attachment Loss Definition

Answer 4

Distance from the CEJ to the base of the crevice.

Question 5

Clinical Attachment Loss Calculation

Answer 5

CAL = PD (Sulcus) + CEJ to GM
CEJ to GM may be:
(+) Positive if Apical to CEJ
(-) Negative if Coronal to CEJ

Question 6

Why is Clinical Attachment Loss Significant?

Answer 6

1. Treatment Planning
2. Prognosis
3. Assess attachment over time