مجله دندانپزشکی کودکان ایران
پیاپی 17 (پاییز و زمستان 1392)

There are several studies in relation to dermatoglyphics with some fields in dentistry. The objective of this study is evaluation of relation between dermatoglyphics and mesiodens in cases with mesiodens. In this descriptive cross sectional study, 17 cases with mesiodens and 45caseswithoutmesiodens were selected from those referred to Mashhad Dental School. Ink method was used in this study. Data analyzed with SPSS, and T-test with significance of 0.05 was used for statistical analyses. T-test showed significant difference between both groups in frequency of loop pattern type of the finger tips (P=0.01). There is no significant difference between both study group in frequency of types of arch and whorl patterns of the finger tips. Also there is significant difference between mean total numbers of ridge count in the study groups. Present study showed low frequency of loop pattern type of the finger tips in children with mesiodens. Also difference in dermatoglyphics pattern between two sexes in children with mesiodens has been seen.

Use of Information Technology in medical and dental education is rapidly expanding. This rapid progress of Information Technology has created a challenge for dental education, so professors and dental students need to learn new science and skills for application of various Information Technologies. The aim of this study was to investigate the skill and knowledge of Information Technology among professors, postgraduate and undergraduate students in Kerman dental schools. In this cross sectional - descriptive study a questionnaire was given to 343 person of professors, post graduate and under graduate dental students in Kerman dental school. After complement the questionnaires, data was entered to spss statistical software and analysis with ANOWA and χ2 test. The result of this study showed that 39.2 % of professors, 26.2 % of post graduate and 7.8 % of dental students have passed course of IT. Professors significantly more than other groups have enough skills in application of Windows (p< 0/05). only 11.2 % of dental students have no knowledge about Word Microsoft. Familiarity with scientific web site in professors was statistical significant more than other groups and also in post graduate was more than dental students (p< 0/05). Professors (64.7%) and residents (59.5%) was significantly higher than students (41.5%) were somewhat familiar with Digital Library of Medicine. The skill and knowledge of Information Technology among professors, postgraduate and undergraduate students in Kerman dental schools was more than other same studies.

Oral health education has important role in prevention of dental caries. Parents have important role in their children oral health. The aim of this study was to determine the parental knowledge and practice of oral hygiene status in 7 years old children. This cross-sectional descriptive study was conducted on 400 subjects selected through a multistage cluster stratified random sampling. Data were collected using a questionnaire consist of 3 parts: demographic information (age, educational level, and occupational status), 23 questions about knowledge and 9 questions about practice. Data were analyzed using SPSS soft ware, and Pearson and t-test. P value was considered less than 0.05. 55% and 45% of respondents were mothers and fathers, respectively. The mean age of fathers was 38.56±6.23 and the mean age of mothers was 33.31±5.79.The mean score of knowledge and practice were 43.68±13.20 from 46 and 9.32±3.26 from 18 respectively. There is no significant difference regarding knowledge score between mothers and fathers. There are significant differences between knowledge and fathers’ educational level, practice and fathers’ educational level, knowledge and mothers’ educational level, and practice and mothers’ educational level (p

Bruxism is a growing concern in children that has led to negative impact on quality of life. The aim of this study was to determine the quality of life in children 8-9 years old with bruxism in Hamadan city, 2012. In this case- control study 130 students 8-9 year old using a probe, mirror and natural light were examined as well as the questioning of the child (showing how to bruxism), acquaintances, teachers and classmates, 65 students who had bruxism chosen. The questionnaire was given to parents of bruxism and control groups. Data obtained from the questionnaire was analysis with the statistical software SPSS v.16.0 and t-test. In the present study, the bruxism with students age, father's occupation, father's education, mother's education, place of residence, socioeconomic status, living with two parents, divorced (separated) parents, family size, family history bruxism, history and other oral habits, argument in the family, children's education, father's chronic disease, mother's chronic disease and father's addiction was significantly associated (P<0.05), but bruxism with the sex, the family birth rate and mothers addiction was not significantly associated (P>0.05). Quality of life of students with bruxism was significantly lower than quality of life of healthy children. (not having bruxism) (P<0.05). Oral parafunctional habits impact on tooth and jaw, if diagnosed lately and delayed treatment would be led to serious problems, early diagnosis for prevention of disease and education of parents and children to reduce the incidence and complications of bruxism is necessary.

Oral health is the most important factor in public health in any society. Dental services emphasize primary preventive dental care services and in the next stages emphasize the secondary and tertiary prevention, health promotion and development of individual’s health. Despite great progress in fight against disease in the world, tooth decay is still the most common disease in the world, such as our country. The aim of this study was determination of knowledge, attitude and practice of fourth and fifth grade students of elementary schools about oral health in Yazd. This study was a cross-sectional research and conducted among 354 male and female students in fourth and fifth grade at elementary school in Yazd who were selected through randomize sampling method. Data were collected via questionnaires consist of demographic, knowledge (score range 0-22), attitude (score range 5-30) and practice (score range 0-8) questions. Data were analyzed by using SPSS-18 with descriptive and analytical tests such as independent T. test, ANOVA and Pearson correlation coefficient at α=0.05. The results showed that, average knowledge score 15.59±2.5, 66.4% had good and 33.6% had medium knowledge. Average attitude score was 25.04±3.68. 90.4% had good, 9.3% had medium, and 0.3% had poor attitude. Average practice score was 4.45±1.33. 18.6% had good, 65.5% medium and 5.6% had poor practice. Boy's attitudes were more than girls (p=0.026). knowledge, attitudes and practice about oral health among students were at the medium level and education is emphasized. Because students reported teachers and health educator were most important sources of information, it seems we can achieve satisfying results by education through those channels.

Epidemiologic studies play an important role in planning strategies to improve public oral health. The aim of current study was to determine Simplified Oral Health Index (OHI-S) in middle school students of urban and rural areas of Shahriar city during year 1386. In this descriptive-analytic study, 400 middle school students of urban and rural areas of Shahriar city with age range of 12-14 years old were randomly selected after license acquisition from related committees. M/F and urban/rural ratios were 1 among selected students. Dental examination was performed on each student using mirror and dental explorer under light of reading lamp. Indices of debris, caries and OHI-S were recorded in each sextant of oral cavity based on WHO criteria. Demographic data and recorded indices were statistically analyzed using Mann-Whitney and Dunett paired comparison tests. Measured OHI-S was 1.96 ± 0.57 in urban areas which was significantly lower than its rural counterpart 2.33 ± 0.56 (P<0.0001). Most of students (52.5%) have brushed their teeth once a day. 71.3% of students have not used tooth floss and 28.8% have used it regularly or irregularly. 52.3% of subjects have not met a dentist and 33.8% have had an emergency dental appointment. Regular dental appointments were encountered in only 14% of students. Distribution of oral hygiene level was 22 students (5.5%) with good hygiene and 359 (89.8%) and 19 (4.8%) students with moderate and poor oral hygiene, respectively. There was no significant correlation between sex, type of school and age with oral health status. According to results of current study, oral health status of involved students is moderate. Despite this, some deficiencies were encountered in preventive strategies applied to students. So, further efforts to increase public knowledge about oral health and preventive measures is recommended.

Considering the high rate of the dental caries in Iran, prevention, especially in children is necessary. One of the preventive methods is varnish fluoride therapy (VFT). Along with the limited access to dentists and highly priced dental services, providing simple preventive services by volunteer mothers seems to be a suitable solution. The aim of this study was to evaluate the success rate of training varnish fluoride therapy to volunteer mothers comparing two different educational methods were used. This was an interventional educational study. The target population was educated volunteer mothers having a child at school age. Fifteen mothers were trained in two different methods. The first group was trained by multimedia and the second by multimedia plus a discussion session. Then every mother did VFT on her child. The practice of mothers of each group was evaluated. Finally, the average score of each group was compared to evaluate of two educational methods. The average practice score in the first group was 74, and in the second group was 97. (Pvalue<0.001) The result of this study showed that the second educational method (multimedia and discussion session) was more effective than the first educational method (multimedia).

Tooth development is a complicated process. Any deviation from the normal state causes developmental disorders. Fusion is a dental anomaly in which two teeth together; make up a fused one and this anomaly sometimes needs dental treatment. Case report: A 3.5-year-old girl with chief complaint of dental caries was referred to Pediatric dentistry department of Tehran University of medical sciences. Endodontic and restorative treatments with diagnosis of fusion between primary central incisor and a supernumerary tooth were done.