Abstract
The gingival blood flow was measured by hydrogen gas clearance method in rats with naturally occurring gingivitis (SUS rat). A significant increase in the blood flow was observed in the gingiva of 2- to 4-month-old SUS rats with acute gingivitis. Thereafter, the gingival blood flow gradually decreased. The blood flow in the gingiva with subacute gingivitis showed almost similar to that in the gingiva of SUS rats at pre-experimental stage. The control rats (RES rats) showed constant gingival blood flow during the experimental period. The findings suggest that changes in the gingival blood fiow are associated with the process of gingivitis.
