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Table 2 Dental characteristics in 73 patients with OI

From: The dental perspective on osteogenesis imperfecta in a Danish adult population

OI severity

Mild

Moderate-Severe

 

OI type I

OI type III

OI type IV

OI type III and IV

 

(n = 55)

(n = 6)

(n = 12)

(n = 18)

P*

Diagnosed with DI (%)

1 (1.8)

5 (83.3)

12 (100)

17 (94.4)

< 0.001

Discoloration of teeth (%)a

3 (5.5)

5 (83.3)

10 (83.3)

15 (83.3)

< 0.001

Pulp obliteration (%)

4 (7.3)

4 (66.7)

12 (100)

16 (88.9)

< 0.001

Short root (%)

4 (7.3)

4 (66.7)

5 (41.7)

9 (50)

< 0.001

Pulp stone (%)b

16 (29.1)

0

0

0

0.008

Cervical constriction (%)

0

6 (100)

5 (41.7)

11 (61.1)

< 0.001

Taurodontism (%)c

5 (9.1)

0

0

0

0.322

  1. The figures are number of patients with the specified type of dental characteristic, and the percentages in the respective OI severity groups are given in parentheses
  2. *P-value according to Fischer’s exact test. OI type I (mild) compared to OI type III and IV (moderate-severe)
  3. aMissing data in one patient with mild and three patients with moderate-severe OI
  4. bMissing data in one patient with mild and one patient with moderate-severe OI
  5. cMissing data in one patients with mild OI
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