Mehmet Bani

Mesiodens as a risk factor in treatment of trauma cases

The presence of mesiodens often results in complications including retention of primary teeth and delayed eruption of permanent teeth, closure of eruption path, rotations, retention, root resorption, pulp necrosis, and diastema as well as nasal eruption and formation of dentigerous and primordial cysts. Less common complications involving the permanent incisors include dilaceration of the developing roots and loss of tooth vitality. Therefore, early diagnosis of mesiodens has particular importance in terms of preventing such complications. However, with respect to surgical removal of mesiodens, ideal timing of intervention - immediate or delayed intervention - remains to be a highly controversial issue. While predisposing factors of dental trauma such as open bite, increasing overjet with protrusion of upper incisors, and insufficient lip closure have been well documented in the literature, there is limited evidence indicating mesiodens as a risk factor in trauma. In this report of two cases, it is aimed to emphasize mesiodens as a risk factor in the treatment of dental trauma besides its effect on prognosis.

Shear Bond Strengths of Different Adhesive Systems to Biodentine

The aim of this study was to measure the shear bond strength of different adhesive systems to Biodentine with different time intervals. Eighty specimens of Biodentine were prepared and divided into 8 groups. After 12 minutes, 40 samples were randomly selected and divided into 4 groups of 10 each: group 1: (etch-and-rinse adhesive system) Prime & Bond NT; group 2: (2-step self-etch adhesive system) Clearfil SE Bond; group 3: (1-step self-etch adhesive systems) Clearfil S3 Bond; group 4: control (no adhesive). After the application of adhesive systems, composite resin was applied over Biodentine. This procedure was repeated 24 hours after mixing additional 40 samples, respectively. Shear bond strengths were measured using a universal testing machine, and the data were subjected to 1-way analysis of variance and Scheffé post hoc test. No significant differences were found between all of the adhesive groups at the same time intervals (12 minutes and 24 hours) (P > .05). Among the two time intervals, the lowest value was obtained for group 1 (etch-and-rinse adhesive) at a 12-minute period, and the highest was obtained for group 2 (two-step self-etch adhesive) at a 24-hour period. The placement of composite resin used with self-etch adhesive systems over Biodentine showed better shear bond strength.

Efficacy of Biodentine as an Apical Plug in Nonvital Permanent Teeth with Open Apices: An In Vitro Study

The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany) 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1–4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p < 0.05). The apical sealing ability of Biodentine was comparable to MTA at any apical plug thickness.

Effect of new light curing units on microleakage and microhardness of resin sealants.

To determine new developed light curing units with shorter curing times effects on microleakage and microhardness values for resin fissure sealants. Resin filled sealant (UltraSeal-XT), resin unfilled sealant (Delton Type-II) and ormocer-based sealant (Admira-Seal) were light cured with a quartz-tungsten-halogen (QTH), two LED light and a high power LED. Two hundred and forty extracted human molars were randomly allocated into four groups according to used light-curing unit and three subgroups were formed for three different fissure sealant materials. Specimens were immersed in 0.5% basic fuchsin for 24 h, sectioned and examined under a stereomicroscope, and scored for marginal microleakage. Knoop hardness number (KHN) readings were measured after 48 h. Statistical analyses of test were found in significant difference both microleakage and microhardness values between the various light curing units. The time saving approaches in the curing light were determined higher microhardness, although it was found in higher microleakage.

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