[Experimental gingivitis].

For the experimental gingivitis study 4 (pre)molar teeth were selected and a splint was made over these teeth. During toothbrushing the splint covered the experimental teeth. After brushing it was removed and the volunteers rinsed with chlorhexidine solution (1.2%) or placebo. The results showed tht chlorhexidine rinsing prevented almost completely the accumulation of plaque and onset of gingivitis. The use of the splint facilitated the compliance considerably.