Aagaardstein9698
383). Significant differences were found in stages 2 and 3, and also 4 and 5 in females and 2 and 3, 3 and 4, and 4 and 5 in males. The mean frontal sinus index had a significant correlation with the CVM stage in both groups.
According to the results, the frontal sinus index cannot be used as a predictor of skeletal maturity.
According to the results, the frontal sinus index cannot be used as a predictor of skeletal maturity.
This study aimed to determine the microtensile bond strength (μTBS) of a bulk-fill composite to permanent and primary coronal dentin using a universal adhesive in self-etch and total-etch modes.
This in-vitro study was performed on 52 occlusal dentinal surfaces of human primary and permanent teeth. The crowns were cut to the gingival level. The 48 prepared dentin sections were randomly assigned to the following groups (n=13) A Primary/Total-etch, B Primary/Self-etch, C Permanent/Total-etch, and D Permanent/Self-etch. In groups A and C, after etching for 15 seconds, two layers of a universal bonding (Futurabond U) were applied and cured for 10 seconds. All samples were filled with a bulk-fill composite (x-trafil; VOCO) and cured for 40 seconds. The samples were cut to a bar-shaped dentin block with the dimensions of 1×1×1 mm
, and after 10,000 thermocycles, the μTBS test was accomplished at a crosshead speed of 1 mm/minute. The mean and standard deviation (SD) of μTBS were calculated, and the data were analyzed using two-way analysis of variance (ANOVA) and Fisher's exact test.
The mean μTBS was as follows A 15.03±2.0279, B 11.11±2.4423, C 23.50±4.8165, and D 16.26±6.3200 MPa. Futurabond U showed a higher μTBS in the total-etch mode (P<0.001). The permanent teeth had greater μTBS than the primary teeth (P<0.001). Similar percentages of failure modes were observed in the total-etch groups but in the self-etch groups, most failures were in the form of adhesive and mixed.
Greater μTBS was observed in the permanent teeth with the total-etch technique.
Greater μTBS was observed in the permanent teeth with the total-etch technique.
The purpose was to evaluate the impact of an oral health promotion program including supervised toothbrushing and educational packages for parents on parent's knowledge and oral health status of 6- to 7-year-old schoolchildren.
A multi-stage cluster random sampling method was applied, and schools were allocated to intervention and control groups. After ethical clearance and baseline evaluation, an intervention package consisting of supervised toothbrushing at the school setting, an educational package for parents, and a home package containing toothbrush and fluoridated toothpaste (1000 parts-per-million) were delivered. A post-intervention evaluation was performed after one month on parents' oral health knowledge and oral hygiene of children using the Oral Hygiene Index Simplified (OHI-S). Schools were considered as a unit of randomization, and a generalized estimating equation (GEE) analysis was performed to apply the cluster effect. Descriptive and analytical analyses were performed using SPSS 22 software.
Overall, 701 subjects were re-examined (response rate of 95%). At the one-month follow-up, being in the intervention group (P<0.001, B=-0.028, 95% confidence interval (CI)= -0.33, -0.23) and having higher socioeconomic status [P=0.01, B=-0.12, 95% CI=-0.22, -0.03) were significantly associated with improved oral hygiene status. In the post-test evaluation, parents' knowledge improvement score regarding oral health in the intervention group was not statistically different from that of the controls (0.51 vs. 0.23). see more However, the ΔOHI-S improved in the post-test evaluation (-0.27±0.02 vs. 0.02±0.02; P<0.001).
Children showed improved oral hygiene status, as measured by the OHI-S, after the program consisting of supervised toothbrushing.
Children showed improved oral hygiene status, as measured by the OHI-S, after the program consisting of supervised toothbrushing.
This study aimed to evaluate an innovative internship course at health centers for final-year dental undergraduates and to report initial students' perceptions.
The Department of Community Oral Health, Faculty of Dentistry with the collaboration of the Vice-Chancellor of Health of Babol University of Medical Sciences prepared an educational and clinical training course, named Health Centers Dental Rotation (HCDR), in January 2014. Final year (6
year) dental undergraduates were divided into groups of two or three and worked as an operator or assistant at 12 health centers (six rural and six urban). Students had to fulfill the educational and therapeutic requirements for three weeks. Students' perspectives related to the course objectives were recorded using a five-point Likert scale with a voluntary anonymous questionnaire.
Forty-four dental students, 26 (60%) females and 18 (40%) males, provided oral health care services at the health centers. Based on the students' perspectives, almost all students (95%) realized the limitations of the health centers. The HCDR improved the awareness of 75% of the students about oral health needs and problems of patients referring to these centers. Although 68% of the students declared that participating in this course was a valuable educational experience, 38.6% described it as displeasing.
From the students' perspectives, this course was a worthwhile and positive internship experience and provided an opportunity for students to understand the specific oral health needs of patients attending these health centers and to realize their key role in the oral health system.
From the students' perspectives, this course was a worthwhile and positive internship experience and provided an opportunity for students to understand the specific oral health needs of patients attending these health centers and to realize their key role in the oral health system.This study assessed the efficacy of the retromandibular antero-parotid approach for open reduction and internal fixation (ORIF) of subcondylar fractures. Sixty patients with the mean age of 31.03 years underwent surgical reduction with a 20-25mm incision in the retromandibular area with an antero-parotid transmasseteric approach. All patients were followed between 6 to 12 months. At the end of the first week, six patients exhibited postoperative malocclusion. At the next visits, all patients had optimal occlusion. Maximal interincisal opening (MIO) of 56 patients (93.3%) was >37mm, and only four patients (6.7%) had MIO less then 37mm. In three patients (5%), weakness of the buccal branch of the facial nerve was noticed postoperatively. No salivary gland complications were seen. The surgical scar was hardly noticeable. Retromandibular access with transmasseteric antero-parotid approach is the technique of choice for treatment of high- and low-level subcondylar fractures with adequate visibility and direct access to the condylar area.
