Residual Calcium Hydroxide dressing on the root canal is considered
one of the reasons of endodontic treatment failure. So ,the removal of
this dressing completely before filling is required. The aim of the study
was to evaluate the efficiencies o
f passive ultrasonic irrigation And
increasing the instrumentation of the medicated canal to the file one
size larger than MAF in removal of Calcium Hydroxide dressing.
Aim: The aim of this study was to detect the effect of dressing period of calcium
hydroxide medicament on the apical marginal leakage after obturation of root canal
system.
Materials and Methods: 80 freshly extracted single rooted human teeth were
selected ,all the root canals were hand-instrumented. They were randomly divided into four
groups of 20 teeth each. Group A has no intracanal medicament , groups (B,C,D) were
dressed with Ca(OH)2 paste for a different periods of time (7,14,30) days respectively,
groups (B,C,D) were divided into subgroups of 10 teeth according to removing of dressing
. The removal of ca(OH)2was done by two ways, 1- By irrigating with distilled water and
drying with paper points . 2- Size 40 k-file was used in slightly filing motion up to the
working length then irrigated with distilled water and drying with paper points. After that
all groups were obturated with lateral compaction technique using gutta-percha points and
zinc oxide-eugenol cement. Then the access was sealed with GIC cement. The teeth were
immersed into 2% mythylene blue solution ,The specimens were placed in an incubator at
37 C ,with moisture at 100%, for 7 days .After that the roots were sectioned
longitudinally and examined with stereomicroscope and liner leakage was measured.
Aim of Study: The antimicrobial intracanal medication was used widely, and the most common was calcium hydroxide dressing, which must be removed from the root canal before obturation, hence this study aimed to comparative efficacy of EndoVac and Navi
Tip 30 G irrigation Needles with Naocl and CHX 2% in removing calcium hydroxide dressing from the apical third of root canal. Materials &Methods: Forty single root and canal teeth were decoronated to the length of 16 mm. Each root was prepared to the apical foramen using ProTaper Universal Hand System to size 40. Each tooth was embedded in silicone putty to create a set matrix, which allowed reassembly of the tooth for irrigation tests after splitting longitudinally. Then each tooth was split into two halves and an artificial groove (L:4, W:0,2 , D:0,5 ) was cut in one half of the root canal wall 1 mm from the apex ,which was then filled with a Ca(OH)2 paste. Digital images were taken before reassembling under stereomicroscope X40. Subsequently the two halves of roots were reassemble with wax , and remounted in their silicone matrixes, then divided into 2 groups.
Pulpectomy was performed on 100 primary teeth and the radiograph
was exposed immediately post treatment to observe weather the root
canal filling was: flush-undefiled or overfilled.
Teeth were examined periodically, clinically and radio graphically to
assess success of the treatment.
This study aims to evaluat of the effect antibacterial for some materials
which are used dressing and irrigating fluids in infected root canal then
compare of the effectiveness of each of The irrigating fluids and
materials used Dressing in infect
ed root canal
The sample of study was 90 cases a single infection root canal ,
were divided into three group and applied to the total of each such
substance(calcium hydroxide with sodium hypochlorite ,calcium
hydroxide with Iodoform, chx) and then conducted the transplant
bacterial. The cases were evaluated in terms of results of bacterial
culture.
The study showed that chx best antidote infection of calcium hydroxide
with sodium hypochlorite and calcium hydroxide with Iodoform
The aim of this research was to know the histological
comparative between propolis and calcium hydroxide as direst pulp capping
in human.
