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Hyaluronan does not improve bone healing in critical size calvarial defects in rats - a radiographic evaluation
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Keywords

Bone repair
Wound healing
Hyaluronan

How to Cite

1.
Brazão MAM, Bezerra B de B, Casati MZ, Sallum EA, Sallum AW. Hyaluronan does not improve bone healing in critical size calvarial defects in rats - a radiographic evaluation. Braz. J. Oral Sci. [Internet]. 2015 Nov. 25 [cited 2024 May 22];9(2):124-7. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641899

Abstract

Aim: This study evaluated radiographically the effects of 1% hyaluronan in bone healing using a critical size rat-calvaria defect model. Methods: Thirty adult male Wistar rats were used in this study. Two 6-mm-diameter critical-size defects were created and the treatments were randomly distributed as follows: 1) 1% hyaluronan; 2) 1% hyaluronan soak loaded onto an absorbable collagen sponge (ACS) carrier; 3) saline; and 4) ACS alone. The animals were sacrificed at 4 and 8 weeks when biopsies were collected and radiographs obtained using a direct digital radiograph system and a standardAim: This study evaluated radiographically the effects of 1% hyaluronan in bone healing using a critical size rat-calvaria defect model. Methods: Thirty adult male Wistar rats were used in this study. Two 6-mm-diameter critical-size defects were created and the treatments were randomly distributed as follows: 1) 1% hyaluronan; 2) 1% hyaluronan soak loaded onto an absorbable collagen sponge (ACS) carrier; 3) saline; and 4) ACS alone. The animals were sacrificed at 4 and 8 weeks when biopsies were collected and radiographs obtained using a direct digital radiograph system and a standardized protocol. A blind examiner evaluated the radiographic density of the images twice and an intraclass correlation was performed to evaluate examiner reproducibility (R2=0.99, p<0.001). Comparisons between 4 and 8 weeks of treatment were performed by Student’s t test and comparisons between treatments and time by two-way ANOVA at 5% significance level. Results: There were no noteworthy differences between 4 or 8 weeks within each treatment group (p>0.05). When treatments were compared no significant differences between groups were found (p>0.05). Conclusions: Within the limits of this study, it can be concluded that 1% hyaluronan gel alone or its association with a carrier does not improve bone healing.ized protocol. A blind examiner evaluated the radiographic density of the images twice and an intraclass correlation was performed to evaluate examiner reproducibility (R2=0.99, p<0.001). Comparisons between 4 and 8 weeks of treatment were performed by Student’s t test and comparisons between treatments and time by two-way ANOVA at 5% significance level. Results: There were no noteworthy differences between 4 or 8 weeks within each treatment group (p>0.05). When treatments were compared no significant differences between groups were found (p>0.05). Conclusions: Within the limits of this study, it can be concluded that 1% hyaluronan gel alone or its association with a carrier does not improve bone healing.
https://doi.org/10.20396/bjos.v9i2.8641899
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