Relationship Between Body Mass Index and Dental Age in 8-15-Year-Old Orthodontic Patients

Abstract Objective: To investigate the relationship between Body Mass Index (BMI) and dental age in 8-15-year-old orthodontic patients. Material and Methods: Forty-eight children (25 males, 23 females) aged 8-15 years requiring orthodontic treatment participated in this retrospective study. The dental development ages were determined using the Demirjian method and panoramic radiographs. Afterwards, chronological age, height, and weight were recorded. Using the standard equation developed by the Center for Disease Control and Prevention, BMI value was calculated and grouped according to BMI percentile classification according to age and gender. Data were analyzed using the Pearson correlation test. The level of significance was set at p<0.05. Results: Dental age was significantly accelerated in subjects with increased BMI percentile after adjusting for age and gender (p<0.05). The mean dental age among all subjects was 10.58 ± 2.40. The correlation coefficient (r) showed a strong correlation with a positive direction, which means that the dental age also accelerated by 44.6% in the subjects with increased BMI. Conclusion: There was a linear correlation between increased BMI with accelerated dental age. BMI value and dental age can be considered in determining orthodontic treatment time.

Nickel and Chromium Ion Levels in Hair and Gingival Crevicular Fluid with the Corrosion of Brackets in Orthodontic Patients: A Longitudinal Study

Objective: To assess the levels of nickel and chromium ions in hair and Gingival Crevicular Fluid (GCF) of orthodontic patients and to evaluate the corrosion of orthodontic bracket surfaces. Material and Methods: Nickel and chromium ion concentrations were measured in hair and GCF of 15 patients (9 females and 6 males, aged 16-28 years old) who had fixed orthodontic treatment using atomic absorption spectroscopy. The samples were taken before treatment (baseline), 4, 8, and 16 months later during treatment. Along with ionic sampling, microscopic sampling was done. One of each patient brackets was removed to get 15 brackets per group. Five brackets were taken randomly from each group to be examined under scanning electron microscope (SEM). Data obtained were analyzed using paired t-tests. Results: After 16 months, compared with the baseline, average hair nickel level changed from 0.125 µg/g to 0.956 µg/g with statistically significant difference (p=0.00); average chromium level changed from 0.090 µg/g to 0.295 µg/g but no significant difference (p>0.05); average GCF nickel level changed from 3.335 µg/g to 10.410 µg/g; average chromium level changed from 1.859 µg/g to 9.818 µg/g. Both of these increases were significant (p=0.000). SEM examinations showed that the corrosion on brackets was seen in the fourth month, and more severely visible after 8 and 16 months of uses. Conclusion: After 16 months of treatment, compared with the baseline, the hair nickel level was increased by 7.7 times; while for chromium was by 3.3 times. Gingival crevicular fluid nickel level was increased by 3.1 times and chromium level was by 5.3 times. The longer time of treatment, the more ions released and the more corrosion of brackets will be.

Analysis of Risk Factors of Biopsychosocial with Early Childhood Caries (ECC) in Indonesian Pre-School Children

Objective: To describe the Early Childhood Caries (ECC) in Indonesian preschool children based on biopsychosocial risk factors. Material and Methods: This research is an analytic observational with a cross sectional design toward 506 preschool children aged 2-6 years at East Luwu Regency, Indonesia. The biopsychosocial data studied were gender, ethnicity, personal hygiene, child psychology, age, nutritional status, and dental and oral health behavior. These data were obtained through a questionnaire and clinical examination (nutritional status). Multiple linear regression analysis was performed. The statistical tests were performed at the significance level of 0.05. Results: Characteristics of respondents based on parents' origin, found that the majority of respondents were parents from Bugis tribes (68.4%) with ECC frequency of 72.2%. Regarding the visit to the dentist, 12.6% were afraid of the dentist, with ECC frequency of 71.9%. Most children had normal nutritional status (67%) with ECC frequency of 69.3%. Biopsychosocial factors, which significantly affect the Early Childhood Caries, were parents' tribe (p=0.022) and age (p=0.011). There was an association between ECC with brushing teeth before going to bed (p=0.049), use of mouthwash (p=0.002) and consumption of snacks (p<0.001). Conclusion: Biopsychosocial factor indicators are affect the Early Childhood Caries towards Indonesian preschool children.

Comparison Between Nickel and Chromium Levels in Serum and Urine in Patients Treated with Fixed Orthodontic Appliances: A Longitudinal Study

Objective: To compare levels of nickel and chromium in serum and urine in orthodontic patients treated with fixed orthodontic appliances. Material and Methods: Nickel and chromium ion concentration were measured in serum and urine of twenty patients (12 females and 8 males, aged 17-28 years old) who had fixed orthodontic treatment using Coupled Plasma-Atomic Emission Spectroscopy. The samples were taken before treatment (Baseline), two months, and six months later during treatment. Data were analyzed using repeated ANOVA, Bonferroni post-hoc test, and paired t-tests. The level of significance was set at 5%. Results: Average serum nickel level changed from 6.420 ppb to 6.855 ppb. Average serum chromium level changed from 5.305 ppb to 5.505 ppb in 6 months. Average urinary nickel level changed from 5.320 ppb to 5.610 ppb. Average urinary chromium level changed from 5.370 ppb to 5.520 ppb in 6 months. There was a statistically significant difference in serum (p<0.001) and urinary chromium (p=0.007) levels between observation times. Conclusion: Orthodontic treatment might raise both urinary and serum nickel levels, but the differences were not statistically significant; the alterations in chromium levels were not consistent; nickel levels were higher in serum than in urine; chromium levels were higher in urine than in serum.

Influence of Acrylic Resin Denture Base Soaking Length in Siwak Extract Solution (Salvadora persica) on the Growth of Candida albicans

Objective: To know the influence of immersion length of denture base of acrylic resin in Siwak solution (Salvadora persica) on Candida albicans growth. Material and Methods: This type of research is laboratory experimental. The Siwak plant (Salvadora persica) was extracted and 1% solution was formed. The media used were Sabouraud Dextrose Broth (SDB) and Sabouraud Dextrose Agar (SDA). Candida albicans was cultured as 1 dose in 100 ml of SDB medium, and then incubated at shaker rotation for 1x24 hours. The concentration chosen to test the effectiveness of siwak extract solution was 1%, 10%, 15% and 25%. Data were presented as mean ± SD. Results: Zone of 6 hours Siwak extract immersion inhibitor by 43.47 ± 0.35, 8 hours to know the influence of immersion length of denture base of acrylic resin in Siwak solution (Salvadora persica) on candida albicans growth 44.42 ± 0.02, 10 hours of 52.79 ± 0.03. Conclusion: There is a difference of immersion length of denture base of acrylic resin on Candida albicans growth in Siwak extract solution (Salvadora persica).