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:
(1) The gingival score is based on the clinical examination.
(2) The bone score is based on the clinical examination and evaluation of dental X-rays.
(3) A single gingival score and a single bone score is generated for each tooth studied.
(4) 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
