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    Diş Hekimliğinde Restoratif Tedavilerde Sıklıkla Kullanılan Farklı Bonding Ajanların Bağlanma Dayanımlarının Tespit Edilmesi
    (Fırat Üniversitesi Sağlık Bilimleri Tıp Dergisi, 2017) Dayı, Burak; Kamalak, Aliye; Kamalak, Hakan
    Öz: Amaç: Restoratif materyallerin diş dokularına bağlanma kuvvetlerinin arttırılması amacıyla günümüzde yeni dentin bonding ajanlar geliştirildi. Bu çalışmanın amacı diş hekimliğinde sıklıkla kullanılan değerlendirilmesidir. farklı dental bağlayıcı ajanların makaslama bağlanma dayanımlarının Gereç ve Yöntem: Dört farklı adeziv bonding ajanın; G-Premio Bond (GB) (GC, Tokyo, Japan), Tokuyama Bond Force (TB) (Tokuyama Dental, Japan), One-Up Bond (OUB) (Tokuyama Corp., Tokyo, Japan), Futurabond (FB) (Voco-NR Cuxhaven, Germany) kullanıldı. Teflon kalıplar içerisinde restorasyonlar hazırlandı ve 37°C/24 saat distile su içerisinde bekletildi. Makaslama bağlanma dayanımı testleri bir üniversal test cihazı yardımıyla 0.5 mm/dk hızında gerçekleştirildi. Elde edilen verilerin analizleri tek yönlü varyans analizi ve Tukey testi ile yapıldı. Bulgular: Shapiro-Wilk testine sonuçlarına göre verilerimizin normal dağılıma uygun olduğu gözlemlendi (P>0.05). Microtensile bağlanma sonuçlarına baktığımız zaman sırasıyla TB de 96 Newton (MPa), OUB' da 84 Newton (MPa), FB'de 74 Newton (MPa) ve GB'de 63 Newton (MPa) olarak tespit edildi. Böylece TB de en yüksek bağlanma dayanımı, GB de en düşük bağlanma dayanımı tespit edildi. Sonuç: TB de en yüksek bağlanma dayanımı, GB de en düşük bağlanma dayanımı olduğu tespit edildi. Kırılma tiplerine bakıldığı zaman tüm gruplarda koheziv kopmalar görüldü.
  • Küçük Resim Yok
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    The efficacy of laser, ultrasound and self-adjustable file in removing smear layer debris from oval root canals following retreatment: A scanning electron microscopy study
    (Wiley, 2016) Keles, Ali; Kamalak, Aliye; Keskin, Cangul; Akcay, Merve; Uzun, Ismail
    This study aims to compare the efficacy of different irrigation activation methods to remove smear layer and debris from oval-shaped root canals following retreatment. Ninety mandibular canines with oval-shaped root canals were selected. Retreatment was performed with R-Endo retreatment files. The samples were randomly divided into six groups (n=15). Groups were assigned according to agitation technique: R-Endo with classic irrigation, with self-adjustable file, with passive ultrasonic irrigation, R-Endo+Er:YAG, R-Endo+PIPS and R-Endo+Nd:YAG. Compared with the classic irrigation (R-Endo+CI) group, all other groups were more successful in reducing smear layer and debris (P<0.05). The least amount of residual smear layer and debris was detected in the Er:YAG laser group (P<0.05). Additional use of different agitation methods contributes to removal of debris and smear layer following root canal filling removal with rotary instruments; however, none of the techniques tested render root canal walls completely free of smear layer or debris.
  • Küçük Resim
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    The efficacy of laser, ultrasound and self-adjustable file in removing smear layer debris from oval root canals following retreatment: A scanning electron microscopy study
    (Wıley, 111 rıver st, hoboken 07030-5774, nj usa, 2016) Keles, Ali; Kamalak, Aliye; Keskin, Cangul; Akcay, Merve; Uzun, Ismail
    This study aims to compare the efficacy of different irrigation activation methods to remove smear layer and debris from oval-shaped root canals following retreatment. Ninety mandibular canines with oval-shaped root canals were selected. Retreatment was performed with R-Endo retreatment files. The samples were randomly divided into six groups (n=15). Groups were assigned according to agitation technique: R-Endo with classic irrigation, with self-adjustable file, with passive ultrasonic irrigation, R-Endo+Er:YAG, R-Endo+PIPS and R-Endo+Nd:YAG. Compared with the classic irrigation (R-Endo+CI) group, all other groups were more successful in reducing smear layer and debris (P<0.05). The least amount of residual smear layer and debris was detected in the Er:YAG laser group (P<0.05). Additional use of different agitation methods contributes to removal of debris and smear layer following root canal filling removal with rotary instruments; however, none of the techniques tested render root canal walls completely free of smear layer or debris.
  • Küçük Resim
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    Evaluation of the SAF system efficacy to remove the root filling residual from oval-shaped root canals.
    (Selçuk Üniversitesi Diş Hekimliği Fakültesi Dergisi, 2013) Keleş, Ali; Alçin, Hatice; Kamalak, Aliye
    Abstract: Background: To evaluate the efficiency of two stage retreatment method in which the Self--Adjusting File (SAF) is used after R-Endo retreatment files to remove root canal filling residual in vitro. Methods: Sixteen maxillary premolars with single, oval-shaped root canal were instrumented up to size 45 and the canals were filled. Bucco-palatinal and mesio--distal radiographs were taken after root filling and each stage of the retreatment procedure. Stage consisted of R-Endo retreatment files, which were used to remove the bulk of root filling, followed by stage in which SAF file was applied to remove the remnants. Using an image analysis software, the amount of radiopaque residue was compared on digital radiographs. Results: ln the mesio-distal projection, radiopaque residue was present after using the R-Endo retreatment files in 8.78 (: 5)%, 8.22 (: 9.43)% and 16.78 (: 24.36)% of the coronal, middle and apical thirds, respectively. Additional use of the SAF reduced these percents to 5.13 (: 4.36)%, 4.22 (: 8.68)% and 7.97 (: 22.18)% (p<0.05). ln the bucco--palatinal projection, radiopaque residue was present after using the R-Endo files in 16.70 (: 13.51)%, 10.23 (: 10.46)% and 28.49 (: 35.44)% of the coronal, middle and apical thirds, respectively. Additional use of the SAF reduced these percents to 13.31 (: 13.71)%, 5.24 (: 10.87)% and 15.9 (: 31.58)% (p<0.05 for the middle and the apical third; p>0.05 for the coronal third). Conclusion: No system removed the root filling materials completely. Applying the SAF after R-Endo retreatment files resulted in significance reduction in the amount of filling residue in oval canals.
  • Küçük Resim Yok
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    Oval-shaped canal retreatment with self-adjusting file: a micro-computed tomography study
    (Springer Heidelberg, 2014) Keles, Ali; Alcin, Hatice; Kamalak, Aliye; Versiani, Marco A.
    The aim of this study was to assess the efficacy of removing the filling material from oval-shaped canals with rotary retreatment files, with or without the additional use of self-adjusting file (SAF), using micro-computed tomography. Oval-shaped canals from 20 maxillary premolars were prepared and assigned to two groups (n = 10), according to the obturation technique: cold lateral condensation (CLC) or vertical condensation (VC). Then, retreatment procedure was performed with retreatment rotary instruments followed by SAF. The specimens were scanned after each procedure and the volume of the filling material calculated. Median and interquartile range (IQR) percentages of the remaining filling material after each retreatment technique were statistically compared by Wilcoxon and Mann-Whitney U tests with a significance level of 5 %. The median percentage volume of the filling residue after rotary retreatment procedure was 1.59 (IQR = 1.26) and 0.42 (IQR = 0.86) in the CLC and VC groups, respectively (p < 0.05). After the use of SAF, the median percentage was 1.26 (IQR = 0.75) and 0.12 (IQR = 0.53) in the CLC and VC groups, respectively (p < 0.05). Statistically significant difference was also observed within the group after the additional use of SAF (p < 0.05). None of the retreatment procedures completely removed the filling material. The additional use of the SAF improved the removal of filling material after the retreatment procedure with rotary instruments. Filling material left after retreatment procedure may harbour necrotic tissue and bacteria, which could lead to a persistent disease and reinfection of the root canal system. The additional use of self-adjusting file after the conventional retreatment procedures may improve root canal cleanliness, allowing a better action of the irrigating solution.
  • Küçük Resim Yok
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    Removal of Filling Materials from Oval-shaped Canals Using Laser Irradiation: A Micro-computed Tomographic Study
    (Elsevier Science Inc, 2015) Keles, Ali; Arslan, Hakan; Kamalak, Aliye; Akcay, Merve; Sousa-Neto, Manoel D.; Versiani, Marco Aurelio
    Introduction: The aim of this study was to assess the efficacy of lasers in removing filling remnants from oval-shaped canals after retreatment procedures with rotary instruments using micro computed tomographic imaging. Methods: The root canals of 42 mandibular canines were prepared and obturated using the warm vertical compaction technique. Retreatment was performed with rotary instruments, and the specimens were distributed in 3 groups (n = 14) according to the laser device used in a later stage of retreatment procedure: Er:YAG, Er:YAG laser based photon-induced photoacoustic streaming, and Nd:YAG. The specimens were scanned in a micro computed tomographic device after root canal filling and each stage of retreatment at a resolution of 13.68 mu m. The percentage differences of the remaining filling material before and after laser application within and between groups were statistically compared using the paired sample t test and 1-way analysis of variance test, respectively. Significance level was set at 5%. Results: Overall, filling residues were located mainly in the apical third and into canal irregularities after the retreatrnent procedures. After using rotary instruments, the mean percentage volume of the filling remnants ranged from 13%-16%, with no statistical significant difference between groups (P > .05). Within groups, additional laser application had a significant reduction in the amount of the remaining filling materials (P < .05). A comparison between groups showed that Er:YAG laser application after the use of rotary instruments had a significantly higher removal of filling remnants (similar to 13%) than Er:YAG laser based photon-induced photoacoustic streaming (similar to 4%) and Nd:YAG (similar to 3%) (P < .05). Conclusions: None of the retreatment procedures completely removed the filling materials. The additional use of lasers improved the removal of filling material after the retreatment procedure with rotary instruments.
  • Küçük Resim Yok
    Öğe
    Tekrarlayan kanal tedavileri sonrası gutta-perka artıklarını uzaklaştırmada lazer uygulaması etkinliğinin mikro-bilgisayarlı tomografi (mikro bt) ile incelenmesi
    (2014) Keleş, Ali; Kamalak, Aliye
    Tekrarlayan kanal tedavileri sonrası gutta-perka artıklarını uzaklaştırmada lazer uygulaması etkinliğinin mikro-bilgisayarlı tomografi (mikro BT) ile incelenmesi Giriş: Bu çalışmanın amacı, mikro-bilgisayarlı tomografi (mikro-BT) kullanarak, döner eğeler ile kanal tedavisinin yenilenmesi işlemi sonrası oval şekilli kanallardaki artık dolgu kalıntılarının uzaklaştırılmasında lazerlerin etkinliğini değerlendirmektir. Metot: 45 mandibular kaninlerin kök kanalları prepare edildi ve sıcak vertikal kompaksiyon tekniği kullanılarak dolduruldu. Kanal tedavisinin yenilenmesi döner aletler ile yapıldı ve örnekler kanal tedavisinin yenilenmesi prosedürünün ikinci aşamasında kullanılan lazer cihazına göre 3 gruba dağıtıldı: Er:YAG, Er:YAG lazer bazlı PIPS, ve Nd:YAG. Örnekler, kanal tedavisinin yenilenmesinin her aşamasında ve kök kanalları doldurulduktan sonra 13,68 ?m bir çözünürlükte mikro-BT cihazında tarandı. Uzaklaştırılamayan dolgu materyalinin yüzde hacmi hesaplandı ve istatistiksel olarak Kruskal-Wallis ve gruplar arasında ANOVA testi ve paired sample t testi kullanılarak karşılaştırıldı. Anlamlılık düzeyi % 5 olarak belirlendi. Sonuç: Döner aletlerle kanal tedavisinin yenilenmesinden sonra kalan dolgunun yüzde hacmi bütün gruplarda ortalama 13%'dir. Lazerlerin farklı türleri ek olarak kullanıldıktan sonra gruplar arasında istatistiksel olarak anlamlı bir fark gözlenmiştir. Er:YAG lazer, benzer sonuçlar sunan Nd:YAG ve Er:YAG lazer bazlı PIPS 'den önemli ölçüde dolgu materyalini daha fazla uzaklaştırmıştır. Genel olarak, dolgu artıkları kanal tedavisinin yenilenmesi prosedüründen sonra ağırlıklı olarak kanal düzensizlikleri ve apikal üçlüde lokalize olmuştur. Netice: Hiç bir kanal tedavisinin yenilenmesi prosedürü dolgu materyalini tamamen uzaklaştıramamıştır. Ek olarak lazerlerin kullanımı, döner aletler ile kanal tedavisinin yenilenmesi prosedüründen sonra dolgu materyalini uzaklaştırılmasını sağlamıştır.