مجله دندانپزشکی کودکان ایران
پیاپی 24 (بهار و تابستان 1396)

Evaluation of oral health in children plays an important role in determining the health status. This study, simultaneously with the comparison of different provinces in terms of Oral Health at Beginning of Primary School, determines the impact of socioeconomic factors on the oral health of children.
The study was descriptive-analytic and cross-sectional and using information from 7768 primary school children, who were referred to Children Health Testing centers in all provinces of Iran, in the academic year of 2016. To analyze the results, SPSS software and Chi-square test applied..
From 7768 kids, 33.7% of the beginners were in a healthy oral status and 66.3% had an unhealthy oral status. The highest percentage of beginners with oral health problems were in South Khorasan provinces with 90.1%, West Azarbaijan, 88.2% and Markazi with 86%. The percentage of children with oral health problems in rural areas is higher than cities (p 0.05), basic insurance (P According to the study, the low level of education of parents, especially the mother and the habitat in the village, affect the oral health of children. Due to the young population of the country, planning for the prevention and treatment of children's oral teeth is essential.

Dentofacial deformity can affect on individuals ’quality of life. The aim of the present study was determination of orthodontic quality of life questionnaire in first course high school girls.
This cross-sectional study conducted on 195 girls that selected with multi stage sampling method. Data was collected by using demographic characters, orthodontic quality of life questionnaire (22 questions form) and clinical examination. Data analyzed in SPSS software by using ANOVA and regression tests. P value was considered at 0.05.
The mean score of questionnaire was 17.30±10.05, social domain 7.52± 5.15, asthetic 3.55 ±2.96, orofacial 2.57± 2.39, and knowledge 4.13± 2.40.There was significant correlation between orthodontics’ need and the mean score of questionnaire score and social, aesthetic and knowledge domains. In individuals with class 3 malocclusion orthodontic quality of life was significantly worse than the others (p=0.07).
The results of the present study showed orthodontic quality of life among girls students was high .orthodontics’ need and class 3 occlusion had significant affect on orthodontic quality of life.

Sealing the furcal perforation is an important factor to reduce inflammation and perform healing. Selecting the appropriate material to repair the defect is an important concern. Among the various available materials, MTA and CEM showed better properties to achieve this purpose. The purpose of this study was to compare the sealing ability of these materials by bacterial penetration method in furcal perforation repair of primary molars.
Sixty five primary molars were selected for this in vitro study. The teeth were divided in to three groups including two experimental group (n=30) and one control group (n=5). Five teeth which were existed in control group, randomly divided in to three negative control teeth and two positive control teeth. The perforation defects at the size of 3×4 mm2 were prepared on the furcation of two experimental group and two samples of positive control group. In group 1 the perforations were sealed with MTA and in group 2 the perforations were sealed with CEM. Then samples were undergone bacterial penetration test. Survival estimates were calculated using the Kaplan-Meier method and compared with Log- rank test between two experimental groups.
There was no statistically significant difference between MTA and CEM in bacterial penetration as a reparative material for furcal perforation repairs (p=0.204).
Based on the results of this study, MTA and CEM have an equal sealing ability by using bacterial penetration method.

: There are some local or systemic factors can cause disorders in teeth growth pattern in different stage of teeth eruption and cause teeth dont grow naturally which are called under title of impacted teeth. In this study prevalence of impacted teeth by separation of kind of tooth, jaws, type and gender was assessed among a group of population.
In this cross-sectional (descriptive_analitycal) study, 1161 panoramic radiography from 14-24 years old patients who were referred to maxillofacial radiology center in Zanjan were evaluated (2014-2016). After evaluation of panoramic radiographies, the kind of impacted teeth, from each of the jaws and types of location and gender of patients were registered in the information form. Data were statistically analyzed using Chi-square and Fisher's exact tests.
In this study 275 impacted teeth (%23/7) were observed in the radiographies. The rate of impacted teeth among women and men was %25/1 and %21/7 respectively. The most amount of prevalence was related to mandibular third molar unilateral (%11/7) and followed by the mandibular third molar bilateral (%6/4) and maxillary canine unilateral (%2/5) The most amount of prevalence impaction mandibular third molar was related to mesioangular and vertical and followed by the horizontal and distoangular.
Discussion and : In this study prevalence of impacted teeth in the females was little more than of males. Prevalence of impacted teeth was (%77/4) in mandible and (%22/5) in maxilla. Generally, in this study prevalence of impacted teeth was higher than most similar studies.

Index of Orthodontic Treatment Need (IOTN) is a known index for measuring the need for treatment in the community. It uses in planning, sharing of resources and improve standards of treatment. The aim of this study was to evaluate indicators of need for orthodontic treatment is in primary school children.
In this cross-sectional study by convenience sampling, 400 students between the ages of 12 years old with no history of orthodontic treatment were selected. IOTN index was determined by the method recommended by the World Health Organization and also completed a questionnaire that included demographic questionnaires. Simple and Multiple Regression logistic tests of test data to be used Complex Sample Analyze menu. By using of Frequency, Menu Descriptive Statistics were calculated frequency of each Grade of IOTN.
In this study, a total of 373 samples in 7 boys and 9 girl's school were studied. Among them 154 were boys (41.3%) and 219 females (58.7%). The results showed that 307 patients (82.43%) needed the orthodontic treatment. Statistical analysis showed that gender is not a factor influencing the IOTN.
Girls had more need of orthodontic treatment, unlike other studies that have been done in this case, although it was not significant.

Elimination of child dental problems in the best way and with the most cooperation, depend on both child trust to dentist hence parents trust the dentist for continuity. Considering the importance of behavior management techniques in pediatric dentistry, the aim of this study was evaluation of education effect on parent's attitude about these behavior management techniques in children.
In this descriptive study,77 individuals ,selected from parents returned to pediatric department of Yazd dental school, were given questioners containing explanation of study aim, parent’s demographic information and 7 behavior management techniques (Tell show do, voice control, active restraint, passive restraint, HOM, sedation, General Anesthesia) with V.A.S scale in grading mm below each method. Parents specified their comments in each technique once before showing educational film containing these behavior management methods and again after the show. Results were analyzed by Kruskal-Wallis and Wilcoxon tests.
Parents in this study, consisted of 67 women and 10 men with the age range of 24 to 68.the most effect of education was seen in acceptance of Tell Show Do and General Anesthesia)p value=0.001) techniques respectively. There was a significant difference between before and after the educations in all the cited behavior techniques expect hand over mouth.
It seems that over the time, reception of behavior management techniques has been changed and the role of education in acceptance of techniques such as T.S.D and G.A is important.

Nowadays, the treatment immature of teeth with necrotic pulp is based on biological principles and regenerative treatment protocols, replacing traditional apexification treatments. The potential of revascularization and root development in traumatic teeth with necrotic pulp has been documented in dental trauma. The purpose of this case report is to show clinical and radiographical findings of regenerative treatments in traumatic teeth.
Case report: An 8-year-old girl with a history of trauma in both central maxillary teeth and observing pulp necrosis during follow up sessions was treated with a triple antibiotic paste (ciprofloxacin-metronidazole-clindamycin).
After restoring teeth with composite, there were no clinical and radiographical pathologic signs in the two years follow up, and root development continued.