EVALUATION OF AUTOGRAFT VOLUME AFTER BONE GRAFTING OF THE ALVEOLAR PROCESS IN CHILDREN WITH CONGENITAL CLEFT LIP AND PALATE
DOI:
https://doi.org/10.35220/2523-420X/2024.1.15Keywords:
congenital cleft lip and palate, bone grafting of the alveolar process, mandibular symphysis, tibiaAbstract
Purpose of the study. Bone grafting of the alveolar process is an integral part in rehabilitation of children with congenital cleft lip and palate. Eventually, the bone transplant undergoes morphological and morphometric changes which have a significant impact on the quality of the restored defect. The study of issues was to evaluate the changes in the volume of neoformed osseous tissue after bone grafting of the alveolar process with different types of autograft. Research methods. The comparative study includes a retrospective analysis of multispiral computed tomography (MSCT) of 29 children aged 8-17 years with 34 congenital clefts of the alveolar process (24 unilateral and 5 bilateral clefts). The autograft was used from the mandibular symphysis (I group, n = 15) and tibia (ІІ group, n = 19). The analysis of volume indicators was conducted using MSCT scans before, 6 months and 1 year after bone grafting the alveolar process. Research results and their discussion. The average volume of newly formed osseous tissue in children of I group was 287,8 ± 82,0 mm3 (72,0 % ± 10,8) at 6 months and 280,5 ± 81,8 mm3 (71,0 % ± 10,8) one year after bone grafting from the volume of the defect. Over the last six months, there was a 1 % decrease in the amount of newly formed bone (p=0,002). The average volume of newly formed osseous tissue in children of II group changed from 711,9 ± 86,1 mm3 (78,8 % ± 4,2) after 6 months to 622,4 ± 74,6 mm3 (68,9 % ± 3,7) after 1 year. At the same time, defect filling decreased by 9.9 % in the past six months (p<0,001). There was a statistically significant loss of bone volume in percentage equivalent between the I and II groups over the last 6 months (p=0,008). Conclusions. After one year, there was no significant difference found between the volume of newly formed bone in both groups. The reparative processes and bone bridge formation of the mandibular symphysis autotransplant occur more rapidly during the first six months following grafting. During the next six months, the process of bone formation becomes stabilizes. Reparative processes in the newly formed bone from the tibial autograft occur more slowly within a year after bone grafting.
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