An-In-Vivo Comparison Study of The Effect of Some Materials Which Used in The Treatment of Infected Root Canals

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 infected 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

Choose of the Material for Pulp Treatment in Primary Teeth

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.

Removing Calcium Hydroxide Dressing from Apical Third of the Root Canal By Using Irrigation Needles and EndoVac method (In Vitro)

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 NaviTip 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.

Effect of Dressing Period of Calcium Hydroxide on Apical Marginal Leakage (An in Vitro Study)

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.