The aim of this study is to compare the clinical effect of traditional root canal disinfection and aPDT on root canal disinfection. And provide the reference for clinical application and experience.
The study of groups: Group1: Calcium hydroxide-based antibacterial dressing - two session root canal treatment Group2: aPDT - one session root canal treatment Microbiological measurement. Filled with sterile PBS, the root canals were sampled immediately before and after the disinfection procedures.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
40
tooth was isolated using a rubber dam in order to avoid the outside microbe
Inject the photosensitizer (PS)to the parallel orifice of the canal,use the small file to stir the PS for 60 s,then irradiation 120 s.
use 1% iodine tincture to disinfect the crown of the teeth.in order to avoid the outside microbe
School and Hospital of stomatology,Fujian Medical University
Fuzhou, Fujian, China
RECRUITINGQuantification of bacteria by colony counting
Quantification the total bacteria
Time frame: 2 days after the sample taken
tooth pain
patient subjected sensation and doctor remark the symptoms after clinical examination
Time frame: 1 week and 3, 6, 12, 24 months after treatment
change of the lesion
take X ray, measure the lesion and compare to post-treatment
Time frame: 3, 6, 12, 24 months after treatment
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use 2.5% NaClO as irrigants
mechanical preparation with NITIMTWO to 25#06, and cleaned with 5 ml of 2.5% NaClO between each endodontic file. At the end of the procedure, root canals were ultrasonic irrigated with 2.5% NaClO, 17% EDTA for 1 min followed by irrigation with 0.9% normal saline to remove the smear layer
filled the canals with AH-Plus sealer and Gutta-percha by vertical condensation