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 Release 22.0, Sept. 2008
 
Chapter : ch9. Dentistry & Oral Medicine Section : Indices for Evaluating Dental Health Status
  Gingival Bone Count

  Online Excel Reference
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Overview :

The gingival bone count is a composite score based on the gingival condition and degree of bone loss affecting a person's teeth. This can be used to evaluate periodontal health, especially in epidemiologic studies.

 

Scoring:

• The gingival score is based on the clinical examination.

• The bone score is based on the clinical examination and evaluation of dental X-rays.

• A single gingival score and a single bone score is generated for each tooth studied.

• A mean for each score is then computed for the whole mouth.

 

 

Parameter

Finding

Score

gingival score

negative

0

 

mild gingivitis involving the free gingiva (margin, papilla, or both)

1

 

moderate gingivitis involving both free and attached gingiva

2

 

severe gingivitis with hypertrophy and easy hemorrhage

3

bone score

no bone loss

0

 

incipient bone loss or notching of alveolar crest

1

 

bone loss about one fourth of root length, or pocket formation one side not over one half of root length

2

 

bone loss about one half of root length, or pocket formation one side not over three fourth root length; mobility slight

3

 

bone loss about three quarters of root length, or pocket formation one side to apex; mobility moderate

4

 

bone loss complete; mobility marked

5

 

gingival bone score =

= SUM((gingival score) + (bone score)) / (number of teeth examined) =

= (mean gingival score) + (mean bone score)

 

Interpretation:

• minimum score: 0

• maximum score: 8

• The higher the score, the more serious the periodontal disease.

 

  References:

Dunning JM, Leach LB. Gingival-bone count: A method for epidemiological study of periodontal disease. J Dent Research. 1960; 39: 506-513.

 

 

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