Abstract
In order to identify the degree of pulpal response caused by the light-cured lining material, Fuji-Lining LC, we conducted a histopathological examination using adult dogs. The results of our experiments are summarized as follows.
1) According to the observation at 1 day to 3 days postoperative, a slight inflammatory cell infiltration accompanied by their degeneration and disappearance was observed in the odontoblastic cells located along dentinal tubuls from cavity floor or wall.
2) At seven days post-operative, degeneration, disappearance and also vacuolar degeneration were observed. On the other hand, a slight inflammatory cell infiltration was found unchanged.
3) Even at 14 days post-operative, degeneration and disappearance were still observed in the odontoblastic cells. Howevery the inflammatory effect disappears when beginning of the restored dentin build up is observed.
4) According to the 35-62 day post-operative observation, anew restored dentin build up was confirmed, even though a slight change was observed remaining in the odontoblastic cells. According to the results of our experiment, we concluded that Fuji-Lining LC, a light cured lining material, is of less irritation towards pulp than current equivalent materials from the histopathological view-point.
