Didem Atabek

A retrospective study of traumatic dental injuries

AIM The prognosis of dental trauma cases varies depending on the time elapsed after the trauma before treatment started. The aim of this study was to examine epidemiological and dental data from traumatic injuries to primary and permanent teeth during the period from 2005 to 2010. MATERIAL AND METHODS The examinations aimed to determine the age and sex distributions of patients, the causes of tooth injury, the type of teeth injured, the monthly distribution of the trauma, the time elapsed between injury and treatment, and the classification of the traumatized teeth and their treatments. RESULTS The dental trauma records of patients with an average age of 9 years, including 120 girls (35.3%) and 220 boys (64.7%), were evaluated. The most commonly affected teeth were the maxillary central incisors (66.24%). The main cause was falls (70.1%). In primary dentition, subluxation (36.4%) was observed in the highest percentage of injured teeth, and in permanent dentition, the most common observation was uncomplicated crown fractures (44.9%). Only 18 patients (2.9%) were referred to the clinic within 1 h following the injury. The most frequent treatment for primary teeth was examination and follow up (63.9%). Restoration with composite resin (26.3%) and root canal treatment (28.6%) were the most common procedures for permanent teeth. CONCLUSION It was revealed that although the most frequent type of injury in permanent dentition was uncomplicated crown fracture, the root canal treatment was the most common treatment in permanent dentition. This finding suggests that when the checkup time after the injury was delayed, the pulp could lose vitality. This finding reveals that it is important to inform the parents about dental trauma and the importance of bringing their children fast to a dentist in trauma cases.

Bond strength of adhesive systems to mineral trioxide aggregate with different time intervals.

INTRODUCTION The aim of this study was to compare the shear bond strengths of various adhesive systems to white mineral trioxide aggregate (WMTA) with different time intervals. METHODS Two hundred cylindrical acrylic blocks with a hole (4-mm diameter and 2-mm height) were prepared. The holes were filled with WMTA, and the specimens were allocated into 5 groups. Forty specimens were stored for 4, 24, 48, 72, and 96 hours at 37°C and 100% humidity. Each group was divided into 4 subgroups: group 1, All-Bond SE (Bisco Inc, Schaumburg, IL); group 2, All-Bond 3 (Bisco Inc); group 3, One-Step Plus (Bisco Inc); and group 4, control. After the application of adhesive systems, composite resin (Aelite, Bisco) was applied over the WMTA. Shear bond strengths were measured using a universal testing machine, and the data were subjected to 1-way analysis of variance and the Scheffé post hoc test. RESULTS There was a significant difference between the 4-, 24-, 48-, 72-, and 96-hour measurements in all of the adhesive systems (P < .001). Among all time intervals, group 3 showed significantly higher bond strengths to WMTA than the other groups (P < .001). Groups 1 and 2 were similar (P = .365). CONCLUSIONS It was concluded that if a longer waiting time can be practiced after the mixing of WMTA, higher shear bond strength measurements can be obtained. Also, when WMTA was used with total-etch adhesive systems, it showed better shear bond strength.

Comparison of laser fluorescence devices for detection of caries in primary teeth.

The aim of this in vivo study was to evaluate the performance of fluorescence-based devices in detecting occlusal caries lesions in primary molars compared with conventional methods. Two examiners assessed 44 occlusal surfaces of first and second primary molars in 20 patients using two fluorescence devices: DIAGNOdent (LF) and DIAGNOdent pen (LFpen). Teeth were also assessed by visual examination and bitewing radiograph. Histological examination served as the gold standard after extraction. By using the McNemar test, the sensitivity, specificity, accuracy, and area under the receiver operating curve were calculated as outer enamel (D1), inner enamel (D2) and dentine caries (D3) lesion thresholds. The intra- and inter-examiner reproducibility were calculated using the Cohens unweighted kappa statistics. At the D1 threshold, the LFpen sensitivity was statistically higher than LF and radiographic examination (P < 0.001), whereas there was no statistically significant difference among the groups at the D2 and D3 thresholds (P > 0.05). All methods demonstrated the highest sensitivity values at D3. At the D1 and D2 thresholds, there were no significant differences between the LFpen specificity and the other methods. All methods presented similar performance in detecting all lesions considering the area under the receiver operating curve. The LFpen showed better performance than LF. Furthermore, visual examination and the LFpen device seem to be sufficient for detection of occlusal caries in primary molars.

Why parents prefer university clinic for pedodontic treatment? Effect of caries/orthodontic treatment/trauma, education and media: A cross-sectional study

The aim of this study is to determine why parents prefer university clinics for pedodontic treatment, as well as describe caries, orthodontic treatment, trauma, education, and the media effect. A five-item, questionnaire-based, cross-sectional interview study was administered face-to-face to a nationally representative sample in Turkey in 2013 by the Gazi University, Department of Pediatric Dentistry. The researchers recorded the parents′ educational status, reasons for referral, and the children′s age and sex. A Chi-square test was used for the categorical variables. The continuous variables were compared using a Mann-Whitney U-test and a Kruskal-Wallis test in 90% confidence interval of ΁3%. A total of 572 patients and their parents agreed to participate in this study. Question 1: Statistically significant difference was found between parents educational status. Question 2: Increased education status led to increased confidence in academic facilities (P < 0.05). Question 3: Just for over the 16 years education status has found significantly a low concern (P < 0.05). Question 4: Only for over the 16 years education status was found significant information via media sources (P < 0.05). Question 5: 56.6% said dentists should provide more information. Media sources are gaining importance and status for educating the public information source in pedodontic treatment. The increasing status of education showed a significant difference for confidence in academic facilities.

DÖRT FARKLI FLUORİD SALINIMI YAPAN RESTORATİF MATERYALDEN FLUORİD EMİLİMİNİN SIĞIR MİNESİNDE DEĞERLENDİRİLMESİ: İN VİTRO ÇALIŞMA

Aim: The aim of this study was to compare the fluoride uptake from four different of fluoride releasing restorative materials by bovine enamel and to determine the effect of time on this uptake. Material and Method: A glass ionomer cement (Fuji II), resin-modified glass ionomer cement(Fuji II LC), giomer (Beautifil) and compomer (Dyract AP) were elected. A total of 120 bovine enamel slabs were prepared from the buccal surfaces of the bovine teeth. The slabs were divided into 5 subgroups (n=6) representing 5 time intervals (1, 7, 14, 21 and 35 days). Fluoride-ion selective electrode method was used to determine the enamel fluoride uptake was determined. Results: Glass ionomers and giomer had significantly higher fluoride uptake than compomer (p<0.05). Glass ionomers and giomer had similar fluoride uptake in all test intervals. Conclusion: Considering the enhanced physical properties and long-term fluoride release similar to glass ionomers, giomers are found to be promising. Keywords: Giomer, glass ionomer, fluoride uptake, fluoride-ion selective electrode