Hq. Jin et al., WOUND-HEALING AND REVASCULARIZATION - A HISTOLOGIC OBSERVATION OF EXPERIMENTAL TOOTH ROOT FRACTURE, Oral surgery, oral medicine, oral pathology, oral radiology and endodontics, 81(1), 1996, pp. 26-30
Citations number
18
Categorie Soggetti
Pathology,Surgery,"Dentistry,Oral Surgery & Medicine
We used dogs as an animal model to generate tooth root fracture and to
observe the wound-healing process of the fracture. Histologic examina
tion of the specimens revealed that the early reaction of the wound he
aling was infiltration of inflammatory cells particularly at the coron
al part of the fracture, whereas less inflammation but more abundant c
ollagen fibers were seen at the apical part of the fracture (15 and 30
days). inflammation lasted for more than 90 days and then subsided. A
t bay 180, bone tissue healing was observed. Revascularization of the
pulp tissues reached a high level at the same stage that bone healing
took place. Our data suggest that in tooth root fracture, the regenera
tion of blood vessels is important in the wound-healing process and th
e revascularization is synchronized with the fracture wound healing. I
n this animal model the complete hard tissue healing could rake as lon
g as 6 months.