Journal of Dental Medicine

Dangers from mercury in dental office

E. Yasini

Normal 0 false false false EN-US X-NONE AR-SA Mercury has been used in amalgam restorations for more than a century though it is poisonous and mercury vapor can endanger the health of patients and dental office staff. Therefore, they should be aware of its hazards and observe guidelines to prevent injury to nervous system, heart, kidneys, alimentary and respiratory systems. The source of mercury poisoning in dental offices can be of stored mercury, evaporation while mixing, inserting, condensing, carving, burnishing or polishing the amalgam , amalgam residuals, poisoning while replacing old amalgam restorations or while steriling the instruments. In any case, we can state that although the amount of mercury released from amalgam compared to the mercury in the environment is negligible but the dental staff who work with mercury should observe the safety guidelines.

Evaluating antimicrobial effect of Glaucium on Oral microflora

Normal 0 false false false EN-US X-NONE AR-SA In this study, 4 species of Glaucium (Corniculatum, Elegans, Flavum and fimberiligerm) was used and their root, stem, flower, leaf and seeds were dried and grinded. Then, the extract was made by adding ethanol, methanol and water. By using sterile swab, oral microbial flora of 10000 patients were taken and cultivated on different agar cultures. The microbial strains involved: streptococci, bacillus, actinomycetes, diphteroids, lactobacillus and candida. Antimicrobial effect was evaluated in various media by measuring the diameter of microbial zone and compare with control group. The antimicrobial effect of the studied species on total count of oral microbial flora and also on each bacterial species was recorded. Acetyl pyridinum chloride was used in control group. The amount of absorbed extract was 1.25 mg in each blank disc. The different concentrations of 1.25, 2.5, 5 and 10 were prepared and analyzed. The results showed all 4 species had antimicrobial effect and the least effective concentration was 2.5%. The Elegans specie was more effective than the others. Muler-Hinton medium was the most suitable media among the others. The extracts of ethanol, methanol, water and autoclaved showed the most to the least antimicrobial effect respectively. The antimicrobial effect was related to the specific oral microflora of every individual. Streptococci were the most sensitive while bacillus was the least sensitive bacteria to the extract.

Evaluating microbial contamination of instruments and frames of removable partial dentures and fixed prostheses

A. Fazel

Normal 0 false false false EN-US X-NONE AR-SA In current study, we reported a research on contamination of instruments and frames of removable partial dentures transmitted from laboratory to the clinic. The instruments and frames were sampled three times and the obtained samples were cultivated in special mediums. Then, the resulted colonies were again sampled to achieve unified bacterial strains and finally the bacteria strains were analyzed in biologic, biochemistry and serological characteristics. The obtained results are presented in this article.

A case report study of Intrabony Neurofibroma

Normal 0 false false false EN-US X-NONE AR-SA Intrabony neurofibroma is a very rare lesion (6% of all types of neurofibroma) and in 80% of cases it is seen in spine. Current study is aimed to analyze the published articles in this field as well as presenting a rare case.

Densitometric analysis of mandible osteoporosis in relation to age and gender

AR. Talaiepor

Normal 0 false false false EN-US X-NONE AR-SA Osteoporosis is one of the most important complications in the elderly. In Osteoporotic bone, The composition is normal but density is changed. In fact, in a specified volume the bone tissue is decreased. Likewise, radiogeraphic density of bone image would be increased. In this study, densitometry was used to evaluate the prevalence of osteoporosis in 250 cases.

Evaluating the success rate of 155 dental implants 2 years post delivery

AR. Rokn

Normal 0 false false false EN-US X-NONE AR-SA In a 2 year study, indices of implant health such as PPD, PAL, BI and GI were measured and compared at the baseline, 6 months, 1 and 2 years after implant delivery. It was found that PPD and PAL indices were decreased in second year in compare to the first year which implicates success and health of implant in a 2 year period following prosthesis insertion.

Shade selection in dentistry

H. Benaz

Normal 0 false false false EN-US X-NONE AR-SA Identifying the shades is difficult and needs not only the science but also the art. In order to match and coordinate the shades, distinguishing them is essential. As well as hue, chroma and value, Maverick stains are also considered. Various factors effect color perception such as the difference between the eyes' vision, age, drugs and psychology of the colors. Surface texture is considerably important in adjusting teeth color. Color is the light reflected from teeth structures and is accompanied with scattered photons. Thus, to achieve exact and acceptable results, it is better to use light sources with wide light emission field.

Clinical evaluation of viral infections of oral cavity after chemotherapy in patients with blood and lymphatic malignancies

Normal 0 false false false EN-US X-NONE AR-SA In recent years, Medical science has been developed remarkably in treatment of malignant diseases. New treatment modalities, chemotherapy, radiotherapy and immunotherapy in patients with different types of neoplasm have cured some cases and increased their life long. On the other hand, considerable complications have also been developed for both patients and clinicians. Viral infections of oral cavity in patients receiving chemotherapy is ignored in most cases. Therefore, we aimed to evaluate viral infections in hospitalized patients receiving chemotherapy in Hematology department of Amiralam and Imam Khomeini Hospitals. On this account 84 patients with leukemia (AML,ALL, CML, CLL) and lymphoma ( hochkin and non hochkin) who were in immunosuppression phase after chemotherapy were evaluated in 3 months. Lower incidence of viral infections in comparison to the results of other countries were obtained.