Heinrich R, Hornová J, Kneist S, Künzel W
Wissenschaftsbereich Präventive Stomatologie, Sektion Stomatologie der Medizinischen Akademie, Erfurt.
Zahn Mund Kieferheilkd Zentralbl. 1990;78(8):699-703.
Sound and carious root surfaces of 24 extracted human teeth with extensive periodontal attachment loss were examined by SEM. The microflora covering the radicular surfaces was a complex flora consisting of filamentous and fusiform bacteria, short and long rods. Cocci and coccoid bacteria were observed on root surfaces. Bacterial invasion in the exposed peripheral root dentin was delayed by sclerotic dentin.
利用扫描电子显微镜（SEM）对24颗有广泛牙周附着丧失的拔除人牙的健全牙根面和龋坏牙根面进行了检查。覆盖牙根面的微生物群落是一个复杂的群落，由丝状菌、梭形菌、长短杆菌组成。在牙根面上观察到了球菌和类球菌。硬化牙本质延缓了细菌对暴露的外周牙根牙本质的侵入。
