COMPLICATION RATE OF OSTEOCONDUCTIVE MEMBRANES OVER FRESH ALVEOLAR SOCKETS
colloidal silver, gentamicin sulfate, metronidazole,
claforan, rifampicin, dioxidine).
Group 2 included 22 patients in whom the “Collost”
membrane (ZAO BioPHARMAHOLDING, Moscow,
Russia) was used to cover the alveoar socket. Collost
is a high-purity bovine collagen of type1 under the
form of a fully resorbable membrane. The third
group consisted of 25 patients in whom the alveolar
socket was not covered. Natural healing of the intra-
alveolar blood clot was used to represent a normal
control group.
Table 1 presents the three groups of patients (group
1 = collapan-group, group 2 = collost-group, group
3 = control) and the reasons for tooth extraction
(extraction group due to formation of apical cysts,
extraction group due to chronic periodontitis,
extraction group of third molars).
Grouping patients in the observation groups
according to the volume of the bone lesion is
presented in Table 2. According to the data
presented in tables 1 and 2, it becomes obvious
that the patient groups were comparable. There
were no significant differences in the average age of
each patient group. None of the participants in the
study had any traumas, surgeries, somatic diseases
requiring medical rehabilitation, maxillofacial and
neck inflammation in the patient history, and were
comparable according to the index of tooth decay,
Table 1. Grouping patients in the observation groups according to the diagnosis.
Diagnosis of the patients included
in the observation group
Observation groups
Group 1, 30%, N=20
Group 2, 33%, n=22
Group 3, 37%, n=25
Apical cyst (from one of the frontal
teeth of the lower jaw) 5 7%
20% 6 9%
27% 7 11%
28%
Chronic periodontitis (molars and
premolars of the lower jaw) 9 13%
45% 9 13%
41% 11 16%
44%
Dy