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)