Dentistry

Simplified Oral Hygiene Index (OHI-S - Greene & Vermillion)

Calculates Debris Index (DI-S), Calculus Index (CI-S), and total OHI-S (0–6) to quantify oral cleanliness.

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Parameters

Tooth #16 (Maxillary Right 1st Molar Buccal) - Debris*

Tooth #11 (Maxillary Right Central Incisor Labial) - Debris*

Tooth #26 (Maxillary Left 1st Molar Buccal) - Debris*

Tooth #36 (Mandibular Left 1st Molar Lingual) - Debris*

Tooth #31 (Mandibular Left Central Incisor Labial) - Debris*

Tooth #46 (Mandibular Right 1st Molar Lingual) - Debris*

Tooth #16 (Maxillary Right 1st Molar Buccal) - Calculus*

Tooth #11 (Maxillary Right Central Incisor Labial) - Calculus*

Tooth #26 (Maxillary Left 1st Molar Buccal) - Calculus*

Tooth #36 (Mandibular Left 1st Molar Lingual) - Calculus*

Tooth #31 (Mandibular Left Central Incisor Labial) - Calculus*

Tooth #46 (Mandibular Right 1st Molar Lingual) - Calculus*

Simplified Oral Hygiene Index (OHI-S - Greene & Vermillion) Result

Formula

DI-S = Total Debris Score / 6 (Range: 0–3)
CI-S = Total Calculus Score / 6 (Range: 0–3)
OHI-S = DI-S + CI-S (Range: 0 to 6.0)
Good: 0.0–1.2 | Fair: 1.3–3.0 | Poor: 3.1–6.0

Clinical Pearls

Provides standardized, quantitative epidemiological and clinical tracking of dental plaque accumulation and calculus mineralization across dental hygiene regimens.

Limitations

Evaluates 6 designated index teeth; if index teeth are missing, alternate adjacent teeth must be substituted.