MUSTANSIRIA DENTAL JOURNAL

the aim of this study was to evaluate the effect of different types of irrigants solution on postoperative pain after root canal treatment.
Materials and method: 75 patients with irreversible pulpitis on the lower mandibular premolars teeth, after diagnosis all cases were treated in a single visit in a private clinic over a period of 18 months. selected for this investigation endodontic treatment for the teeth using a wave one technique and then we divided the patients into 3 groups each group consist of 25 patients : in G.I irrigated with sodium hypochlorite (NaOCl).G.II irrigated with chlorhixdine and GIII irrigated with NaOCl, followed by EDTA 17% then CHX ( using conventional needle irrigation was performed with a 27-G (Appli-Vac) needle and syringe). The needle was placed short of the binding point or 2mm from the working length and irrigant was expressed over 30 seconds.)after irrigation the canals Will dried with paper point then obuterated it with guttapercha , a temporary filling covered the teeth after that we asked the patient to record the postoperative pain after 6_12h , 24_48 h & one week , by using annual scale(AVS)the results show that the pain in G.III is the lowest pain than the other two groups.
Conclusion the uses of the combination of irrigants solution resulting in less postoperative pain after endodontic treatment.
The aim is to compare the effect of different irrigants solution on postoperative pain after root canal treatment.

Different types of materials were used in aim to reduce pain and to alleviate of symptoms. These materials have been used for decades like formocresol, cresatin, eugenol, CMCP and iodine-potassium because of their antiseptics and germicidal effects that should reduce the pain. In recent years the introduction of pulpotec material that contain both formalaldehyde and dexamethasone acetate may provide both antiseptics and sedative effect of steroids.

Aim: To determine centering ability of variety of instruments and techniques used to over-instrument simulated tiny curved canals.
Method: Standardized eighty blocks of clear resin, each had a canal of 20 mm in length, the straight portion was 17 mm in length, while the length of the curved apical portion was 3 mm, with a curvature of 20˚ and a radius of 4 mm, its size was equal to no.8 .02 ISO K-file, the resin blocks were divided into 8 groups, six of them were over instrumented by 1mm using hand SS K-files and Ni-Ti K-files in step back technique, Gates-Glidden drills and hand SS K-files and Ni-Ti K-files in hybrid technique, ProTaper and ProFile rotary file system in crown down technique, while two groups were under instrumented by 1 mm using hand SS K-files in step back technique and ProTaper rotary file system in crown down technique.
Preoperative and postoperative images were recorded using a digital camera, fixed on a wooden platform .the pre- and postoperative images were superimposed and Microsoft office Visio program version 11 was used to measure the centering ability.
Results: Regarding Centering ability for Over-instrumentation techniques, there was a significant difference at p < 0.05 in favor of crown down technique, in favor of Ni-Ti over the SS, and in favor of rotary instruments over the hand instruments. For under-instrumentation groups, there was a significant difference at p < 0.05 with in favor of hand SS instruments in step back technique over the rotary Ni-Ti instruments in crown down technique. Also there was a significant difference between the over and under instrumentation techniques at p < 0.05, with in favor of under instrumentation techniques.
Conclusion: Within the limitations of this in vitro study, crown down technique gave better results than step back and hybrid technique, as well Ni-Ti instruments performed better than SS instruments. Rotary instruments had less deviation than the hand instruments when used inside simulated tiny curved resin canals.

The purpose of this study is to compare the working length (WL) measurement results of conventional periapical radiographies and electronic apex locater (EAL).

This in vitro study was conducted to evaluate the effect of different surface treatment (sandblasting with 50µm of Al2O3, etching with 5% of hydrofluoric acid and a combination of 50 µm of Al2O3and 5% of hydrofluoric acid) on the shear bond strength of veneering ceramic to zirconia and e.max press substructures

This study is conducted to evaluate the use of TCS230 color recognition sensor to analyze the color shade of artificial teeth.

Infection control rules are extremely important in dental office because dangerous infections can be passed on to the dental health workers or the patient during treatment, the aim of this study was to assess the awareness and knowledge of a group of Iraqi dentists regarding application of infection control rules in their private practice , data was collected by an interview with the study group (35 dentists) to fill a questionnaire. Results showed that many of the infection control measures were inadequately applied, leading to a conclusion that training in both educational and practical fields is required to improve the knowledge related to infection control measures.

Treatment with fixed orthodontic appliances compromises the oral hygiene and increases the risk of plaque related disorders and dental staining in addition to corrosion and corrosion byproduct: ions. The aims this study was assessment the effects of air polishing on Chromium ion (Cr) release from stainless steel self-ligating brackets.

Background: In the worldwide oral squamous cell carcinoma (OSCC) is considered to be one of the most deadly diseases, due to it is late in diagnosis and absence of availability of established reliable biomarkers. The aim of current study was designed to detect cytokines in saliva of patient with oral squamous cell carcinoma and compared their levels with the healthy subjects and evaluate their validity as diagnosis and investigated changes of cytokines level in saliva pre-and post- surgical treatment to provide knowledge for exploring the use of saliva to monitor treatment response.

Aim of study: to investigate the effects of different concentrations of aloe vera , aglycon part (monoanathron ) against candida albicance adhere to two types of heat cure acrylic resin denture base (conventional and Hi- impact) on two periods of time (30 minutes and 8 hours).
Materials & methods: A total of 120 specimens were prepared, sixty specimens of each hot cure denture base acrylic resin material, each sixty specimens were farther divided into two subgroups of 30 specimens according to the time of immersion, each 30 specimens were farther subdivided into three 10 specimen groups according to the concentration of aleo vera used, isolation of free aglycon (Monoianthron) from anthroquinon glycoside of aloe vera plant; Candida albicans isolation and identification and preparation of candida albicans suspension; autoclaved specimens of each sub-group for both heat cure acrylic resins were placed into the tubes containing brain heart infusion plus inoculum and remained for 12 hours at 37 0C in order to favor an initial colonization of the acrylic resin surfaces, the disinfection step was performed over two periods, colony formation was then counted after incubation.
Results: The two concentration of aloe Vera studied in the present investigation exhibited varying degree of inhibitory effect against candida albicans adherent to different type of heat cure denture base acrylic resins. The degree of inhibition varied depending on the concentration of the extract while the period of immersion has no significant effect on the number colony.
Conclusion: with the limitation of this study it can be concluded that 100% and 75% concentrations of monoanthron aglycon part of anthroquinon isolated from aloe vera have anticandidal effect, 100%concentration has higher effect than75%. Immertion period has no effect on the anticandidal activity of the solutions.

Polymorphous Low Grade Adenocarcinoma is a rare malignant tumor of minor salivary glands. It has an unique histopathological, clinical and behavioural features. Most of its incidence has been presented in the palate. It shows a variety of growth patterns within the same one lesion, including cribriform, tubular, and solid areas that may mimic adenoid cystic carcinoma. The tumor cells histologically are characterized by lacking of nuclear atypical and hyperchromatism with rare mitoses. However, the prognosis of this tumor is good because of its low grade, although it has an unpredictable potential to metastasize.

the ultimate goal of modern implantology is fine and fast osseointegration which is a major factor influencing the success of dental implantation, and the optimum circumstances of it the biointegration which is the occurrence of continuity of ceramic implant to bone without intervening space

In light of all the current advances in dental restoration, tooth extraction is one of the last options in dental treatment and yet the number of patients needing dental extraction is still high. The aims of this study are to determine the reasons and pattern of teeth extraction among adult patients attending the Oral Surgery clinic at College of Dentistry/ Mustansiriyah University and to study the correlation between the reasons of teeth extraction and patient’s age, gender and tooth position

Metronidazole is a broad-spectrum antimicrobial activity against protozoan infections and anaerobic bacteria. In the late 1950s, Metronidazole was first introduced for the treatment of trichomoniasis. At present, the antimicrobial metronidazole is one of the most widely used as antibacterial compounds in the treatment of periodontal disease 9. Beside the periodontal pocket debridement (subgingival scaling and curettage), topical application of metronidazole seems to be very efficacious. Metronidazole efficiently inhibited anaerobic microorganisms in the periodontal pockets 10.