Examination of Local Periosteal Microcirculation After Application of Absorbable and Nonabsorbable Membranes
The use of different membranes is common in dentoalveolar surgery. Absorbable and nonabsorbable membranes are used, often beneath the periosteum, to fulfil different functions (as barriers, patches, or spacers). It is still unclear to what extent such membranes affect the biology of the periosteum and what role is played by piezoelectric devices during preparation of the periosteum. We placed two different membranes (absorbable and nonabsorbable) underneath the periosteum of rat calvaria. We prepared the periosteum using different methods (piezoelectric device vs mechanical device). We then examined and analyzed periosteal microcirculation over a period of 28 days. A clear difference was observed between the two methods when used with absorbable membranes: The piezoelectric device offered advantages. Absorbable membranes maintain considerably more local periosteal microcirculation and should be given preference. In addition, we observed an advantage to using a piezoelectric device for periosteal dissection. Therefore, this method should also be used more widely.
Microvessel densities (logarithmic scale) at different time points (days 0, 3, 8, and 28) in the group with nonabsorbable membranes. Outliers that are more than 1.5 times the length of the box below the 25th percentile or above the 75th percentile are represented as circles; outliers that are more than 3 times the length of the box below the 25th percentile or above the 75th percentile are represented as asterisks. E0: periosteal elevator day 0; P0: piezoelectric device day 0; E3: periosteal elevator day 3; P3: Piezoelectric Device Day 3; E8: periosteal elevator day 8; P8: piezoelectric device day 8; E28: periosteal elevator day 28; P28: piezoelectric device day 28.
Microvessel densities (logarithmic scale) at different time points (days 0, 3, 8, and 28) in the group with absorbable membranes. Outliers that are more than 1.5 times the length of the box below the 25th percentile or above the 75th percentile are represented as circles; outliers that are more than 3 times the length of the box below the 25th percentile or above the 75th percentile are represented as asterisks. E0: periosteal elevator day 0; P0: piezoelectric device day 0; E3: periosteal elevator day 3; P3: piezoelectric device day 3; E8: periosteal elevator day 8; P8: piezoelectric device day 8; E28: periosteal elevator day 28; P28: piezoelectric device day 28.
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