فهرست مطالب samaneh hemmati

Garlic and cinnamon extracts, like fluoride varnish, play a role in caries control due to their antimicrobial effect and controlling demineralization. This analytical laboratory study was conducted in 2021 to investigate the antimicrobial effect of garlic and cinnamon extracts compared with fluoride varnish in controlling the infection of oral Lactobacillus acidophilus and Streptococcus mutans.

The disk diffusion, minimum inhibitory concentration and the minimum bactericidal concentration tests were used to check the antimicrobial effect. Ampicillin and Erythromycin discs were used for positive control and sterile physiological serum was used for negative control. Data were analyzed using analysis of variance (ANOVA) and Bonferroni post hoc test.

In disk diffusion test, cinnamon along with fluoride varnish (10.0±1.0mm) caused a significant increase in the diameter of the growth inhibition halo of L. acidophilus (P<0.001), However, the largest growth inhibition halo diameters in L. acidophilus and S. mutans were associated with garlic-cinnamon-varnish (12.0±1.58mm) and fluoride varnish (9.0±0.71mm), respectively. In both strains, the antimicrobial effect of garlic extract was significantly lower than other compounds (P<0.001). The most inhibitory and bactericidal effects were associated with fluoride varnish seen in S. mutans.

According to this study, cinnamon and fluoride varnish has a synergistic antimicrobial effect against L. acidophilus in laboratory conditions. Also, cinnamon extract due to similar effects to fluoride varnish, can be useful as an alternative agent in controlling and preventing dental caries.

Iron drops are often prescribed to children less than 2 years of age. Due to their low pH, these drops may soften the enamel and accelerate its destruction. The present study aimed to evaluate the enamel hardness of deciduous teeth after being exposed to various iron drops.

A total of 48 healthy deciduous anterior teeth were randomly assigned to four groups (n=12 in each group). The samples were exposed to three drops of Sideral iron, Ferrosomal, and Ferrous sulfate for 5 min. Surface hardness was measured before and after iron drop exposure. Four groups were exposed to HCL, and the obtained data were analyzed using the least significant difference (LSD) test and analysis of variance (ANOVA).

In all groups, a decrease was observed in the surface hardness of surface enamel. In the Sideral group, the average initial hardness was 358.81, the secondary hardness was 337.23, and the tertiary hardness was 221.19. In the Ferosomal group, the average primary hardness was 375.67, the secondary hardness was 336.80, and the tertiary hardness was 208.23. In the Ferrous sulfate group, the average initial hardness was 383.41, the secondary hardness was 301.73, and the tertiary hardness was 149.13. Therefore, the three groups statistically differ before and after the iron drop. After the use of iron drop in an acidic environment, there was a statistical difference between Ferrous sulfate and two other drops (P<0.05). Between Sideral and Ferosmal, the difference was not significant (P=0.864).

As evidenced by the results of this study, it can be concluded that all three types of iron droplets in the environment, similar to human saliva, significantly reduced the hardness of enamel. In an acidic environment, all three types of iron drop reduced the hardness of the enamel of deciduous teeth. The Ferrous sulfate group demonstrated the most significant reduction in the microhardness of the enamel, and the Sideral group had the most negligible decrease in enamel hardness.

Autism is a neurodevelopmental disorder whose symptoms appear during infancy or early childhood. Autism spectrum disorder is characterized by impairments in social interaction and communication, restricted behavioral patterns, and unusual sensory sensitivities. Few studies have been conducted to investigate the dental problems of autistic children, rendering conflicting results. Regarding this, the present study aimed to compare 3-12-year-old autistic with normal children in terms of the decayed, missing, and filled teeth (DMFT) index in Sari city.

This cross-sectional study was conducted on autistic and healthy children (n=70 each) in the age range of 3-12 years old in 2020. The age and gender of the participants, the educational level of parents, and the number of children were recorded in both groups. The DMFT index was compared in children with autism and healthy children. The data were analyzed using the Mann-Whitney U and Chi-square tests. A p-value less than 0.05 was considered statistically significant.

According to the results of the study, the educational level of parents (maternal education P=0.279, paternal education P=0.295), age (P=0.832), gender (P=1.00), and the number of children (P=0.397) were not significantly different between the two groups; however, d and DMFT indices (P<0.001) were significantly higher in the group of children with autism than in the group of healthy children.

The DMFT index was significantly higher in autistic children than in healthy children. Therefore, it is essential to implement preventive programs at home and in the clinics to improve the oral health of children with autism.

One of the main goals in pediatric dentistry is to maintain deciduous teeth until the permanent teeth grow. In cases where the pulp of deciduous teeth is involved, pulpectomy is needed which requires determining the correct working length of the canals and cleaning and filling their interior space using a proper filling material. The principles of successful endodontic treatment in permanent teeth are well known, but, determining the anatomy of the canal of deciduous teeth is difficult due to the resorption and deposition of hard tissue in the root canal, the shape, dimensions, and variable conditions of root apex. Therefore, in this narrative review, we investigated the accuracy of Ipex-I and Root ZX mini electronic apex locators and conventional radiography in root canal length determination in resorbed primary molars. A thorough search was conducted in Science Direct, Google Scholar, PubMed, Scopus, Irandoc, SID, Magiran, and Iranmedex covering the articles published in 2000–2020. According to findings, all techniques mentioned were found to have almost similar accuracy in determining the working length in resorbed deciduous molars. However, obtaining radiography images may be difficult in children, therefore, apex locators are more preferable to the conventional method.