Study on the Morphology of Micro-implant-bone Interface Cells and Bone Histomorphology Under Different Implantation/Estudio sobre la Morfología de las Células de la Interfaz Microscópica Implante-Hueso y la Histomorfología Osea Bajo Diferentes Implantaciones

• Published in: International journal of morphology 2018-03, Vol.36 (1), p.279
• Main Authors: Bing, Li, Kyung, Hee-Moon, Xu, Fan-Yu, Kwon, Tae-Geon, Wu, Xiu-Ping
• Format: Article
• Language: English
• ISSN: 0717-9367

Micro-implant stability has always been the focus of orthodontic clinical research. In the experiment, the morphological changes of bone tissue around the micro-implants in self-tapping and assisting implantation were investigated to explore the effect of different implantation on the osseointegration of micro-implants in order to provide some theoretical basis for clinical practice. Six adult male Beagle dogs were selected, three implants were implanted into the left and right maxillary bone of Beagle dogs at the 0th, 4th and 6th week, respectively. One side to self-tapping implantation, the opposite side to assisting implantation. At the 8th week of the experiment, the animals were sacrificed and the micro-implant-bone tissue specimens with the healing time of 8w, 4w and 2w were obtained. The specimens were stained with Toluidine Blue(TB) and photographed under 100X, 200X microscope. Morphology of micro-implant-bone interface cells was observed under light microscope. In self-tapping group, there were some fibrous tissues surrounding the micro-implants at the 2th week, the formation of osteoblasts and osteoid was observed at the 4th week, the wavy and lamellar bone tissues were seen at the 8th week. In assisting group, more collagen fibers were deposited around the micro-implant at the 2th week, there were a large number of osteoid-like cells, and the collagen was gradually replaced by the bone tissue at the 4th week, the osteoblasts were active and the osteoblasts were linear arrange and form a laminate bone at the 8th week. Whether implanted self-tapping or assisted implantation, micro-implant-bone interface reconstruction can occur. If the clinical need for early loading force, micro-implant try to choose self-tapping implantation. By appropriately prolonging the healing time, the initial stability of the micro-implant under assistive implantation can be improved. KEY WORDS: Beagle dog; Micro-implant anchors; Morphology ; Bone histomorphology. La estabilidad del microimplante siempre ha sido el foco de la investigacion clinica en ortodoncia. En este trabajo se investigaron los cambios morfologicos del tejido oseo alrededor de los microimplantes autorroscantes y se ayudo a la implantacion para explorar el efecto de diferentes implantes en la osteointegracion de microimplantes con el fin de proporcionar alguna base teorica para la practica clinica. Se seleccionaron seis perros Beagle machos adultos, y se colocaron tres implantes en los huesos maxilares