[Clinical analysis of fine root canal preparation with ProTaper rotary instruments].
OBJECTIVE
To evaluate the clinical effects of fine root canal preparation with rotary ProTaper.


METHODS
Ninety-two teeth among 92 patients were treated with root canal therapy which root canals prepared by rotary ProTaper with Glyde gel (contains EDTA) and lateral condensation, including 66 teeth that 141 root canals were fine,17 teeth being root canal therapy and one or more than root canal were omitted,6 maxillary first molar containing second mesiobuccal canal(MB2), 3 maxillary second molar MB2.


RESULTS
One hundred and thirty five in 141 fine root canals among 66 teeth were successfully prepared by rotary ProTaper, the prepared successful ratio was 95.74%,X-ray showed that obturator had smooth taper. Two palatal root canals of maxillary first molar were underfilling, 4 root canals appeared ledge at apical one third. Seventeen omitted root canals were successfully prepared and obturated. Five in 9 MB2 were successfully prepared and obturated to root-apex, four in 9 were not to end. No instrument separated in all patients.


CONCLUSIONS
The preparation of fine root canals with rotary ProTaper and EDTA is an effective and safe and limited. Nevertheless, the preventive importance of ledge and perforation should be emphasized.
Zhuang
Zui-xin
ZX
Department for VIP, Guangdong Provincial Stomatological Hospital, Guangzhou 510280 China. zhuangzx833@163.com
Ren
Fei
F
He
Zhen-feng
ZF
D000328:Adult; D000368:Aged; D003762:Dental Instruments; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018915:Root Canal Preparation / Q000295:instrumentation*