Fig. 1From: Efficacy of (−)-epigallocatechin gallate delivered by a new-type scaler tip during scaling and root planing on chronic periodontitis: a split-mouth, randomized clinical trialThe ultrasonic scaler tips used in this study. a The conventional P3 (up) and new-type scaler tip (down), b terminal outlet of the new-type scaler tip allows coolants to be ejected into deep pocketsBack to article page