Results of morphological studies on the effectiveness of dental implantation using low-intensity pulsed ultrasound

Background: Ultrasound application to bone fractures in early stages has shown acceleration of callus formation and ossification in several studies. Objectives: To study the morphological changes around installed dental implants after ultrasound application in the early healing stages. Methods: In all experimental groups osseointegration processes took place without breaking the sequence of reparation stages. However, the timing and extent of the repair and osseointegration in the control and experimental groups differed depending on the therapeutic effects of the methods. Findings: Delay of bone maturation, presence of necrotic zones, immature granulation tissue in the early stages, and the predominance of coarse-fibered bone tissue at a later stage of osteosynthesis were found in the first group. In the second group application of low-intensity pulsed ultrasound (LIPUS) to dental implants and periimplant tissues of the operated area contributed to the formation of bone tissue similar in histostructure to the parent bone. The area of the newly formed periimplant bone tissue in the group with LIPUS was significantly higher than that in the first group at all stages of the experiment. Conclusion: The use of LIPUS during dental implantation induces osteoreparation processes by stimulating angiogenesis in the granulation and the newly formed bone.