Table 1 Prevalence of condyle destruction was classified by the Billiau scale [1]. Condyle morphology was analysed according to side. Destruction was classified in two different groups as slightly affected (Group I) and severely affected (Group II)

Prevelance of Condyle destruction according to side

% of patients (n = 46)

 Bilateral destruction

 30 (14)

 Unilateral destruction

 22 (10)

 No involvement

 48 (22)

Prevalence of condyle destruction according to Billiau

% of condyles (n = 92)

Classification

 Score 0

 59 (54)

 Group I

 Slightly affected

 n = 36

 Score 1

 12 (11)

 Score 2

 14 (13)

 Score 3

 12 (11)

 Gruppe II

 Severely affected

 n = 10

 Score 4

 3 (3)