STOMATOLOGY EDU JOURNAL 2017, Volume 4, Issue 3 SEJ_3-2017_Online - Page 23

100% 2 6 80% 19 60% 20 40% 14 20% 6 0% Group 1 Group 2 Group 3 Number of infectious-inflammatory complications Figure 1. For each group the number of infectious- inflammatory complications is outlined together with the numbers of non-complicated cases in the same group. seals, removed teeth and the level of hygiene of the oral cavity. The number of complications in the postoperative period was calculated. The level of the alveolar bone loss was assessed during the long-term follow-up (after 1 year) on the basis of the mandibular bone tissue parameters determined on the basis of cone-beam computed tomography measurements also taken at 1 year postoperative. Measurements were carried out: 1) at two symmetrical points, in the area of chewing teeth, focusing on the location of the mandibular canal; 2) at two symmetrical points in the frontal part of the jaw, focusing on the line of canine teeth. 9 The data obtained during the study were subjected to statistical processing using the “Statistica 10.0” software package. 10 3. Results In the postoperative period in group 1 there were 6 (9%) cases of infectious-inflammatory complications - alveolitis. Two (3%) of the cases occurred after the atypical removal of the third molar, and 4 (6%) after the operation of surgical tooth extraction. In Group 2 there were 2 (3%) infectious-inflammatory complications: 1 (1.5%) case was alveolitis as a result of the atypical removal of the third molar, 1 (1.5%) - tooth extraction that was performed 11 months after the previous operation of the root apex resection of 4.5 tooth and cystectomy. It should be mentioned that this latter complication can be attributed to the errors of endodontic preparation of the tooth for the operation, since according to the retrospective study of the primary documentation it is known that the root canal of 4.5 tooth was sealed more than 5 years ago and the clinical quality control of the canal filling was not carried out following the patient's insistence. In Group 3, 19 (28%) infectious-inflammatory com- plications were detected. 7 (11%) complications oc- curred after the atypical removal of the third molar, 9 (13%) after the surgical extractions of the lower jaw molars / premolars following a diagnosis of chronic granulomatous periodontitis, in 3 (4%) cases the chronic granulomatous periodontitis was without exacerbation. The results obtained are consistent with the reports in scientific literature. 12 The complication ratio in the different groups is shown in Figure 1. The results of the volume measurements indicate a preservation of bone volume, which is highest in the "Collost" group, followed by the "Collapan" group and the controls (Table 3). 4. Discussion The present study highlights the advantage of using the osteoconductive bioresorbable “Collost” membrane for the prevention of the mandible alveolar socket atrophy, which is in line with the reports of Seliverstov et al. and Medvedev et al. (2015). 13,14 COMPLICATION RATE OF OSTEOCONDUCTIVE MEMBRANES OVER FRESH ALVEOLAR SOCKETS 5. Conclusion The results of the study showed that the use of osteoconductive bioresorbable “Collost” and “Collapan” membranes does not increase the complication rate of alveolar socket healing in the mandible. These preliminary results favour “Collost” over “Collapan”. Author Contributions Equal contribution to the paper. Acknowledgments The authors declare no conflict of interest related to this study. There are no conflicts of interest and no financial interests to be disclosed. References 1. 2. 3. Tarn DM, Paterniti DA, Good JS, et al. Physician-patient communication about dietary supplements. Patient Educ Couns. 2013;91(3):287-294. doi: 10.1016/j. pec.2013.01.021. [Full text links] [Free PMC Article] [PubMed] Odin G, Misch CE, Binderman I, Scortecci G. Fixed rehabilitation of severely atrophic jaws using immediately loaded basal disk implants after in situ bone activation. J Oral Implantol. 2012;38(5):611-616. doi: 10.1563/AAID- JOI-D-10-00163. [Full text links] [PubMed] Andreasi Bassi M, Andrisani C, Lopez MA, et al. Guided bone regeneration by means of a preformed titanium Stomatology Edu Journal 4. 5. 6. foil: a case of severe atrophy of edentulous posterior mandible. J Biol Regul Homeost Agents. 2016;30(2 Suppl 1):35-41. [PubMed] Krasilnikov AA, Nikolaev CM, Markarjan AA, et al. [Influence of “Collost” and “Collost with chymotrypsin” for bone defect tMAT(9ɅᅍЁM̸(I̸Դ)L͍ȁ,Aѕ͕8ЁͥمՅѥ)ɕЁɥɕ͕مѥѕՕ聄Ʌ镐)Ց丁%Ё(Aɥѥ́IѽɅѥٔи(ܠ̴̤ܽɐ丁mAՉ5t)AɅѤY,5ɄHY公-4Aѕɸձ(