Evaluating the Correlation between the Body Mass Index (BMI) and Dental Age in 6 to 13-Yyear-Old Children

Background and aim: Methods of age estimation with the aid of radiography have higher accuracy compared with other methods. Some investigations have been performed in this regard, but the correlation between dental development and Body Mass Index (BMI) has been limitedly researched. In the present study, the correlation between dental development and BMI in the children referring to the dental school of Islamic Azad University of Tehran was evaluated with the use of panoramic radiography. Materials and methods: In this cross-sectional analysis, panoramic radiographs of 104 children aged 6 to 13 years were evaluated. The date of radiography minus the birth date was used to determine the chronologic age for each child and then, this age was compared with the dental age estimated by the Demirjian method. Afterwards, the height and weight of the children were measured and the BMI was calculated for each subject. The difference between the estimated dental age and the chronologic age of the subjects was analyzed according to gender and BMI classification. Statistical analyses were performed using the ANOVA test, Pearson correlation coefficient and linear regression. Results: In the 104 samples, the difference between the estimated dental age and the chronologic age was not significant (p=0.516). The dental age in normal weight children was lower than the chronologic age while in obese children, it was higher than the chronologic age (p=0.00001). The correlation coefficient of the estimated dental age using the Demirjian method and the chronologic age in normal weight and obese boys was 0.936 and 0.901, respectively, while in normal weight and obese girls, it equaled 0.916 and 0.942, respectively. Conclusion: The results of the present study showed that dental development is accelerated in obese children

Comparison of Canal Transportation and Centering Ability of Wave One and SafeSider in Curved Root Canals Using Cone-Beam Computed Tomography

Background and Aim: Maintaining the original central canal path during cleaning and shaping of the root canal system plays an important role in the success of endodontic treatment. This study sought to compare canal transportation and centering ability of WaveOne and SafeSider rotary files using cone-beam computed tomography (CBCT). Materials and Methods: This in-vitro, experimental study was conducted on 40 mesiobuccal canals of extracted human mandibular first molars with 20° to 40° of curvature. The teeth were randomly divided into two groups (n=20) and mounted in putty. Next, preoperative CBCT scans were obtained. Root canals were prepared using primary file of WaveOne in group A and SafeSider system up to file #25/0.04 taper in group B. Postoperative CBCT scans were taken and cross-sectional images at 1, 3, and 7 mm distances from the anatomic apex were compared. Data were analyzed using t-test and two-way analysis of variance (ANOVA). Results: WaveOne was significantly superior to SafeSider regarding the canal centering ability and caused significantly less canal transportation (P<0.001). The canal centering ability of both systems was higher at the coronal and middle thirds of the root compared to the apical region (P<0.05). Conclusion: WaveOne, in contrast to SafeSider, has optimal canal centering ability and less transportation in curved root canals

Chamomile Mouth Rinse Effects on Mucositis Reduction After Radiotherapy

In recent years many patients have been received radiotherapy for head and neck tumors and&quot;na large number of them have been survived for some years.&quot;nThe side effects of radiotherapy in oral region are mucositis, ulcers, fungal and viral infections and&quot;nsalivary glands dysfunction. Among these, mucositis is the most important one.&quot;nA randomized double blind clinical trial was performed in radiotherapy department of Tehran Imam&quot;nKhomeini Hospital to determine chamomile mouth rinse effects on mucositis after radiotherapy.&quot;nThe patients are selected randomly from those with oral oropharyngeal or nasopharyngeal cancers.&quot;nData showed that chamomile administration could decrease mucositis rate significantly