Comparative evaluation of shear bond strength of three flowable compomers on enamel of primary teeth: An in-vitro study

Background: The aim of the present study was to determine Shear bond strength (SBS) of different flowable compomers on the enamel surface of primary teeth. The null hypothesis to be tested was that none of the flowable compomer would differ significantly from the other two with respect to SBS. As a result, the tested materials that have the easiest application on child patient is preferred. Material and Methods: Sixty newly extracted non carious primary molars were selected. The buccal surface was cleaned and polished to obtain a flat enamel surface. The specimens were randomly divided into three groups of 20 teeth each, based on the flowable compomers applied, as follows: group I: Dyract Flow® (Dentsply, Konstanz, Germany); group II: Twinky Star Flow® (Voco, Cuxhaven, Germany); and group III: R&D Series Nova Compomer Flow® (Imicryl, Konya, Turkey). Results: SBS in group II (6.78± 0.45 MPa) were significantly lower than groups I and III (8.30 ± 0.29 and 8.43 ± 0.66 MPa, respectively) (P<.001). No significant difference was found between groups I and III (P<.05). Conclusions: Significant differences existed between the SBS of the groups. Therefore, the null hypothesis was rejected. Flowable compomers can provide adequate SBS with self-etching system at restoration of primary teeth. Thus, successful restorations in pediatric patients can be done in a practical way. © Medicina Oral S.L

Epidemiology and symptomatology of migraine among school children: Denizli urban area in Turkey.

OBJECTIVE: This study was aimed at finding the prevalence, associated factors, and symptomatology of migraine among 5 to 8 grades of secondary and 9 to 11 grades of high school children (age range between 11 and 18 years old) in the Denizli urban area in the western part of Turkey. BACKGROUND: Data from the developed countries indicate that migraine is the most common cause of recurrent headaches in children. Also, childhood migraine is sufficiently severe to prevent the half of the suffering children from carrying on their usual daily activities. METHODS: A cross-sectional school-based study was conducted between May 2000 and June 2000. There were 2,490 participants selected by a multistage stratified clustered sampling procedure. A validated self-administered questionnaire designed according to the International Headache Society criteria was given to the school children of age between 11 and 18 years. RESULTS: Overall migraine prevalence was 8.8%; it was 6.7% in boys and 11.0% in girls (OR: 1.7; 95% CI: 1.3 to 2.3). Among girls, the highest prevalence (17.7%) occurred at 15 years of age, but among boys, the highest prevalence (11.9%) occurred at 16 years of age. Of children with migraine, 56.5% had a positive family history, and only 29.1% visited a doctor for headache. CONCLUSION: Migraine is a common health problem among school children in Denizli urban area and it often goes underdiagnosed