Periodontal Disease Staging
Risk Factors
Probing Depths & Clinical Assessment
Treatment Codes
Oral Hygiene & Prevention
100

What is the difference between gingivitis and periodontitis?

Gingivitis is reversible inflammation of the gums, while periodontitis involves irreversible loss of supporting structures.

100

What are two primary systemic risk factors for periodontal disease?

Diabetes and smoking.

100

What is the normal sulcus depth in a healthy patient?

1-3mm.

100

What is the CDT code for an adult prophylaxis?

D1110

100

What is the recommended frequency for professional dental cleanings?

Every 6 months for most patients, more frequently for those with periodontal disease or high caries risk


200

What is the clinical attachment loss (CAL) required to diagnose Stage II periodontitis?

CAL of 3-4mm.

200

How does smoking affect periodontal disease progression?

Smoking reduces blood flow, suppresses the immune response, and increases periodontal destruction.

200

What is a pseudo-pocket?

A pocket formed due to gingival swelling rather than attachment loss.

200

What CDT code is used for periodontal maintenance?

D4910

200

What is the best brushing technique recommended for patients with gingivitis?

The modified Bass technique.

300

What is the main factor that determines the "grade" of periodontitis?

he rate of disease progression and risk factors like smoking and diabetes.

300

Which vitamin deficiency is associated with delayed wound healing and increased gingival inflammation?

Vitamin C deficiency

300

Which landmark is used to measure gingival recession?

The cementoenamel junction (CEJ).

300

What does the CDT code D4346 represent?

Scaling in the presence of gingival inflammation.

300

How does fluoride help prevent dental caries?


    • Fluoride strengthens enamel and inhibits bacterial metabolism.


400

What are the probing depths typically seen in Stage III periodontitis?

6mm or greater.

400

How does diabetes contribute to periodontal disease?

High blood sugar levels impair immune function and increase inflammation, leading to faster disease progression.

400

What does bleeding on probing (BOP) indicate?


    • Active inflammation and potential periodontal disease.


400

What CDT code is used for full quadrant scaling and root planing?

D4341

400

What is the purpose of interdental cleaning aids such as floss and proxabrushes?

They help remove plaque from areas that toothbrushes cannot reach, reducing interproximal decay and gingivitis.

500

What class of furcation involvement is present when the probe can pass completely through the furcation?

Class III furcation involvement.

500

What is the primary bacterial species associated with aggressive periodontitis?

Aggregatibacter actinomycetemcomitans.

500

What does a mobility score of Class III indicate?

Severe mobility where the tooth is depressible in the socket.

500

 What CDT code is used for localized SRP (1-3 teeth per quadrant)?

D43420

500

What dietary habits contribute most to caries risk?

Frequent consumption of sugary and acidic foods and beverages.


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