Histological and bone mineral density analyses of the mandibular lamellar/oblique fracture healing in beagles.

Abstract Objective: The goal of this study was to determine whether there were any differences in the healing processes for linear fractures and lamellar/oblique mandibular fractures. Materials and methods: Using a random number generator, two groups of six beagle dogs each were created from a group of twelve.The experimental group was the lamellar/oblique fracture of the mandible, while the control group was the traditional linear fracture. The first premolar and the first molar were where the fracture occurred. Two 4-hole bone plates were used to repair the fracture line. Results: X-ray:the experimental group's fracture space was fuzzier and eventually disappeared between the two groups. Histology: the Collagen Volume Fraction in the experimental group was lower than that in the control group three months after surgery. The experimental group had more bone cells than the control group did one month following the surgery.Both groups' trabecular arrangements became more regular as the healing process progressed.Bone mineral density: the experimental group's bone mineral density was higher than the control group's one month following surgery. Four-point bending test:the experimental group's fracture energy was higher than the control group's one month following the surgery. The experimental group's stiffness was substantially greater than the control group's three months after the procedure. The maximal loading of the experimental group was higher than that of the control group at one and three months following the operation. Conclusion: In comparison to traditional linear fractures, lamellar/oblique fractures of the mandible have higher bone mineral density, are more rigid, and heal more quickly.