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Comparing the three color pounehh tooth paste with the conventional one in preventing the formation of the microbial plaque
A. Ebadifar, A. Naghibi, N. Valaie, Gh. Ramezani, S. Sadat Mansori,
Volume 21, Issue 2 (12 2008)
Abstract

Background and Aim: Plaque control has always been important in preventive dentistry. Various methods and materials have been introduced for this purpose. Recently a three-colored tooth paste has been introduced which claims to prevent plaque formation. The aim of this study was to compare three-colored pouneh tooth paste containing triclosan with the conventional one in preventing plaque formation.

Materials and Methods: This was a randomized double blind cross over clinical trial which was carried out on 40 dental students of Tehran azad university in 2005. Before beginning the trial, the index of plaque was evaluated, registered and reduced to null. The subjects were randomly divided into two groups, the case group (three color tooth paste) and the control group (conventional tooth paste). The participants were asked to apply the specified tooth paste with an oral B Advantage Artica toothbrush for two weeks. After two weeks, the amount of plaque was re-registered and again reduced to null. The type of tooth paste was changed among two groups and the plaque was registered for the third time at the end of two weeks. Then the patients and assessors were not aware of the type of tooth paste in the tubes (double blind). McNamar and ManWhitney test were used.

Results: From the 40 subjects, 4 cases were omitted due to the different reasons. The amount of initial plaque index was 88.3 12.1 which was reduced to 78.2 16.9 in the control and 74.1 19.3 in the case group. The difference between primary plaque and secondary plaque (after applying tooth paste) was significant in both case and control groups, however there was not any significant difference between two groups.

Conclusion: Based on the results of this study, there was not any significant difference between conventional and three-colored tooth paste in reducing the plaque index.


Evaluation of oral health and malocclusion among blind children and teenagers in Mazandaran in 2019
Pedram Abedi, Maysam Mirzaee, Sahba Amini, Mohammad Mehdi Naghibi Sistani,
Volume 33, Issue 4 (1-2021)
Abstract
Background and Aims: Information collection about the malocclusion and oral health in blind children is essential to plan for their education in schools. Therefore, this study aimed to evaluate the status of malocclusion and oral health among blind children and teenagers in Mazandaran, Iran.
Materials and Methods: The population of this included 150 blind children and teenagers aged from 10 to 18 years who were referred to the public and private centers cities including Sari, Babol, Freydoonkenar, and Babolsar in Mazandaran, Iran in 2019. Information on maxillary occlusion status, oral hygiene index, and DMFT index was extracted through clinical examination. Data were analyzed using SPSS23 software by ANOVA and Chi-square tests in addition to the descriptive statistics.
Results: The mean DMFT was 10.25 (SD 4.67). Oral hygiene status was good in 16% of participants, moderate in 82%, and poor in 2%. There was no significant difference between girls and boys in terms of oral hygiene status (P=0.5). In all cases, 35.8% had class I malocclusion, 29.8% had class II malocclusion, and 14.6% had class III malocclusion. Class II malocclusion was more common in girls and class I in boys (P=0.01).
Conclusion: Dental caries and occlusal abnormalities were common among blind children and adolescents living in Mazandaran province. Addressing the oral and dental needs of the blind should be a priority for health policymakers in this province in Iran.

The effect of phase transformation behavior on mechanical and fatigue properties of three Nickel-Titanium rotary endodontic files
Mohaddeseh Sadat Naghibi, Hamed Shahmir, Sajjad Omidian,
Volume 37, Issue 0 (3-2024)
Abstract
Background and Aims: The present investigation was conducted on the evaluation of the microstructure, phase transformation behavior, mechanical properties, and fatigue resistance of nickel-titanium rotary endodontic files. The main purpose of this investigation was to find the effect of microstructural parameters on the performance of these files.
Materials and Methods: Three rotary tools with brand names Denco, Edgeendo, and Eighteeth were studied. To evaluate the microstructure and transformation behavior of tools, metallography, X-ray diffraction, and differential scanning calorimetry methods were used. The bending test was used to check the behavior of superelasticity and memory and the microhardness test was used to evaluate the hardness of the samples. Also, cyclic fatigue behavior in a mold containing a simulated tooth canal was investigated and calculated by parametric statistical analysis. The fracture surface of the samples was also studied by scanning electron microscope.
Results: Analyses revealed the existence of a high volume fraction of R phase in the microstructure of the Edgeendo file. Rotary files with higher volume fraction of martensitic phase showed higher shape memory effect and fatigue resistance. Denco and Edgeendo rotary files with better surface quality and high volume fraction of martensitic phases in the microstructure showed better fatigue resistance compared with the Eighteeth file. In all the results, the P-value was less than 0.05.
Conclusion: Multiphase microstructure containing austenite and martensite together with appropriate phase transformation and hardness of the alloy have key roles on functional properties of rotary files. This study provides dentists with a deeper understanding of the fatigue behavior and mechanical properties of these files, enabling them to make more informed decisions in choosing the appropriate instruments for endodontic treatment.

Assessment of patients’ awareness regarding infection control principles in dental treatments
Aref Naderi Khorshidi, Mohammad Mehdi Naghibi Sistani, Seyedali Seyedmajidi, Meisam Moradi,
Volume 38, Issue 0 (4-2025)
Abstract
Background and aims: Dental procedures carry a significant risk of transmitting viral and bacterial infections to both patients and healthcare personnel. Patients' awareness of infection control principles can play a crucial role in improving the safety of the clinical environment and promoting public health. This study aimed to assess the level of patients’ awareness regarding infection control principles in dental treatments.
Materials and Methods: This descriptive-analytical cross-sectional study was conducted in 2022 on 390 patients attending the Dental School Clinic of Babol University of Medical Sciences, Iran. Data were collected using a validated questionnaire consisting of 24 items related to infection control. Each correct answer was awarded one point. The total score and awareness level of participants were analyzed based on the gender, age group, educational level, and number of dental visits using independent samples t-test, chi-square test, and ANOVA in SPSS, with a significance level set at 0.05.
Results: The mean age of patients was 33.89 ± 13.24 years and 62.8% were female. The mean awareness score was 18.37 ± 3.21. A total of 76.4% of participants demonstrated a good level of awareness. The awareness mean score was higher in female than male patients (P=0.006). A statistically significant difference was observed in mean awareness scores educational level (P<0.001) and age group (P=0.01). However, no significant difference was found based on the number of dental visits (P=0.867).
Conclusion: Although, the overall level of patient awareness regarding infection control principles was acceptable, gaps remain in certain areas. The implementation of targeted educational programs is recommended to enhance patients’ awareness and to promote infection control practices in dental treatment settings.

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