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    Bond strength of an adhesive system to dentin contaminated with hemostatic agents
    (2014) Güller F.; Şimşek M.; Cebe F.; Yildiz E.; Yildirim C.
    Objectives: The aim of the present study was to evaluate the microtensile bond strength (?TBS) of self-etch adhesive system to dentin surface contaminated with three different hemostatic agents in the presence of blood and saliva. Materials and Methods: Twelve extracted human carious-free permanent molar teeth were used to obtain flat occlusal dentin surfaces. The dentin surfaces were grinded with 600 grid sandpaper under water irrigation. Teeth were divided into four groups (I: Kontrol, II: Ankaferd, III: ViscoStat Clear and IV: Transamine). The hemostatic agents were aplicated in the presence of blood and saliva, then were rinsed and dried. Teeth were restored with self-etch adhesive system (Clearfil SE Bond) 2mm thick composite resin (Quadrant Universal LC). Then specimens were stored 37 °C distilled water during 24 hours. Five microtensile specimens from each tooth measuring 1.00-+ 0.003 mm were prepared with a slow-speed diamond saw sectioning machine with a diamondrim blade (n=15). These specimens were attached to opposing arms of the microtensile testing device with cyanoacrylate adhesive and fractured under tension at a crosshead speed of 1 mm/min. Statistical analysis was made with one-way analysis of variance (ANOVA) and Tukey tests (?=0.05). Results: ?TBS values of groups were (mean ± SD in MPa); I: 28.81±6.84, II: 27.38±4.89, III: 24.89±5.80, IV: 24.73±7.14. There was no significant differences between ?TBS of groups (p>0.05). Conclusions: Contamination of dentin with hemostatic agents didn't affect the ?TBS of self-etch a dhesive system. Hemostatic agents may be used to control bleeding without decreasing ?TBS of self-etch adhesive system.
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    Evaluation of formocresol, calcium hydroxide, ferric sulfate, and MTA primary molar pulpotomies
    (Dental Investigations Society, 2014) Yildiz E.; Tosun G.
    Objective: The aim of this study is to evaluate four different pulpotomy medicaments in primary molars. Materials and Methods: A total of 147 primary molars with deep caries were treated with four different pulpotomy medicaments (FC: formocresol, FS: ferric sulfate, CH: calcium hydroxide, and MTA: mineral trioxide aggregate) in this study. The criteria for tooth selection for inclusion were no clinical and radiographic evidence of pulp pathology. During 30 months of follow-up at 6-month intervals, clinical and radiographic success and failures were recorded. The differences between the groups were statistically analyzed using the Chi-square test and Kaplan-Meier analysis. Results: At 30 months, clinical success rates were 100%, 95.2%, 96.4%, and 85% in the FC, FS, MTA, and CH groups, respectively. In radiographic analysis, the MTA group had the highest (96.4%), and the CH group had the lowest success rate (85%). There were no clinical and radiographic differences between materials (P > 0.05). Conclusions: Although there were no differences between materials, only in the CH group did three teeth require extraction due to further clinical symptoms of radiographic failures during the 30-month follow-up period. None of the failed teeth in the other groups required extraction during the 30-month follow-up period. © 2014 Dental Investigations Society.
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    Reattachment of fractured maxillary incisors using fiber-reinforced post: Two case reports
    (2012) Tosun G.; Yildiz E.; Elbay M.; Sener Y.
    Objective: The reattachment of the crown fragment to a fractured tooth is a conservative treatment that should be considered for young patients with crown-root fractures to the maxillary incisors if the subgingival fracture can be exposed to provide isolation. Gingivectomy, the surgical or orthodontic extrusion of the apical fragment is necessary to expose the subgingival fracture. This report demonstrates the treatment of two cases with the combination of gingivectomy or resective osseous surgery, reattachment of coronal fracture and fiber-reinforced polymer posts and shows three years long term follow-up. Subgingivally extended crown-root fractures of maxillary incisors were restored with a combination of chemically cured resin material, light cured resin material and polyethylene fiber. Conclusion: Within the limitations of this case report, it was demonstrated that reattachment of tooth fragments can successfully benefit periodontal health, aesthetic needs and normal functioning after three years.