chp 34 interpretation of periodontal disease

Periodontal disease

Group of diseases that affect supporting structures ranging from inflammation of gingiva to destruction of supporting bone and PDL

Detection of Perio disease requires

BOTH clinical and radiographic exam

Radiographic examination tells

Pattern, distribution , and severity of bone loss

Preferred exposure method and film

PA with paralleling technique

What type of BW adequately depicts bone loss

Vertical

Panoramic film

Has little diagnostic value in perio

Bone loss

Difference between the physiologic bone level and height of remaining bone

Pattern of bone loss

Horizontal vs vertical

Horizontal bone loss

Vertical bone loss

Distribution of bone loss

Localized vs generalized

Localized bone loss

Occurs in isolated areas less than 30%

Generalized bone loss

Occurs evenly throughout dental arches

Severity of bone loss

Slight, moderate , severe

Beyond the 1.5mm-2.00 mm apical to the CEJ

Slight bone loss

1-2mm (crestal changes)

Moderate bone loss

3-4 mm (loss of 10-33%)

Severe bone loss

5mm or more (33% or more)

Predisposing factors

Local irritants may contribute to: calc, defective restorations

Nodular calc

Smooth calc

Defective amalgam

Open contacts