关键词: 牙菌斑, 量化, 模糊C均值, 分割, 直方图

Abstract: Dental plaque quantification is very important to patients，dentists as well as researchers.This paper presents a method to automatically quantify the dental plaque using Fuzzy C-Means（FCM） clustering algorithm associated with images’ histogram analysis，and applies the proposed approach to clinical dental plaque quantification.The experimental results indicate that the quantification results based on proposed method are fully quantitative，repeatable，relatively accurate and automatic compared with those of quantification levels using plaque indices adopted in clinic.

Key words: dental plaque, quantification, Fuzzy C-Means（FCM）, segmentation, histogram