Bulem Üreyen Kaya

Corono-apical leakage of various root filling materials using two different penetration models--a 3-month study.

The purpose of this study was to analyze the sealing ability of various filling combinations in a 90 days period using fluid transport and glucose penetration models. Premolars (n = 108) were filled with either gutta-percha (groups 1-4) or Resilon (groups 5-8) core materials combined with AH Plus (groups 1, 3, 5, 7) or Epiphany (groups 2, 4, 6, 8) sealers by using cold lateral compaction (groups 1, 2, groups 5, 6) or System B with Obtura II (groups 3, 4, groups 7, 8). The sealing ability of each sample was evaluated through glucose and fluid penetration models. Penetration values of 90 days were statistically analyzed with three-way analysis of variance (ANOVA)and Duncans Multiple Range tests (p < 0.05). No significant differences were found among the penetration values when the fluid filtration model was used (p > 0.05). On the contrary, statistically significant differences were obtained among the groups with the glucose penetration model (p < 0.05). AH Plus/Resilon/cold lateral compaction group had better sealing ability than the other combinations tested with the glucose penetration model.

Ankylosed maxillary incisor with severe root resorption treated with a single-tooth dento-osseous osteotomy, vertical alveolar distraction osteogenesis, and mini-implant anchorage

Dentoalveolar ankylosis interferes with the vertical growth of the alveolar process, which can lead to an open bite, an unesthetic smile, and occlusal disharmony. This case report presents a new treatment protocol for an ankylosed tooth with severe root resorption using a combined surgical orthodontic management protocol involving a single-tooth dento-osseous osteotomy and vertical alveolar distraction osteogenesis with intraoral elastics and mini-implant anchorage. After distraction and active orthodontic treatment, the patients anterior open bite was corrected. A Class I dental relationship was achieved, overjet was decreased, and a normal incisor relationship was obtained.

Determination of canal orifice co-ordinates and MB2 incidence of maxillary first molars in a Turkish sub-population

Abstract Objectives. To measure the co-ordinates of the root canal orifices and to determine the incidence of mesiobuccal-2 (MB2) in maxillary first molars in a Turkish sub-population. Materials and methods. Standard digital photographs were taken under a stereomicroscope from the occlusal aspect of each tooth (n = 176) before and after crown removal. Canal orifices were negotiated under moderate magnification using dental loupes. The coordinates of the orifices and the distances of each from the central fossa were measured by using geographic software. Intensity maps of the orifice locations were created by using the co-ordinates of all canal orifices. A representative map was drawn using the mean values of orifice locations and access projection area. Results. In the right maxillary first molars, the mean values for the (X, Y) co-ordinates were (0.67, 2.68) for mesiobuccal-1 (MB1), (0.81, 0.84) for MB2, (−1.12, 1.26) for distobuccal-1 (D1), (−0.89, 0.23) for distobuccal-2 (D2) and (0, −2.50) for palatinal (P); the corresponding mean values in the left maxillary first molars were (−0.78, 2.56), (−0.98, 0.90), (0.99, 1.18), (0.69, 0.78) and (0.00, −2.53), respectively. The average MB1–MB2 distance was 1.97 mm. Distobuccalcanal orifices were localized at the distal side of the center in 98.3% of teeth. The incidence of MB2 was 46.02%. Conclusions. The distobuccal canal orifice is mostly located on the distal side of the central fossa. Thus, it should be considered that the access cavity of the maxillary molars may not be always limited mesially. The incidence of MB2 in this sub-population was 46.02%, which is of great importance clinically.

Investigation of Root Canal Debridement Efficacy of Low Temperature Atmospheric Pressure Plasma Compared to the Current Techniques

ABSTRACT This study aimed to compare the efficacy of low-temperature atmospheric pressure plasma (LTAPP) with the current materials (MTAD, NaOCl, EDTA) used with or without passive ultrasonic irrigation (PUI) on smear and debris removal. Mandibular premolars (n = 55) were prepared to an apical size of 40/.06 and randomly divided into 5 different test groups (n = 10 per group) and 1 control group (n = 5) with the following final irrigation protocols: NaOCl + EDTA; NaOCl with PUI; MTAD; MTAD with PUI; LTAPP; and saline (control). Presence of smear layer and debris was evaluated at x2000 (for each third) using a four-level scoring system. The data were analyzed statistically by Kruskal—Wallis and Bonferroni—Dunn tests (P = 0.05). The results showed that NaOCl + EDTA and MTAD with PUI irrigation were the most effective methods for smear layer removal, whereas MTAD irrigation with or without PUI, for debris removal (P < 0.05). Smear and dentin scores showed significant differences among the groups in all thirds (P < 0.05). It could be concluded that LTAPP did not appear effective on smear layer and debris removal as expected. PUI improved only the efficacy of MTAD.

Kök Kanal Tedavisi Başarısızlıklarında Retreatment

SuleymanDemirel Universitesi TIP FAKULTESI DERGISI: 2006 Aralik; 13(4) Kok Kanal Tedavisi Basarisizliklarinda Retreatment Uygulamalari Bulem Ureyen Kaya, Ayse Diljin Kececi Ozet Onceki kok kanal tedavisinin basarisiz olduguna karar verildiginde kanal dolgusunun sokulup yeniden yapilmasi retreatment. veya .revizyon. olarak adlandirilir. Retreatmentin basarisinda vaka secimi, uygun teknik ve ekipmanin yani sira prognozunun iyi degerlendirilmesi de etkili olur. Cerrahi yontemlere basvurmadan once endodontik olarak yapilabilecek ortograd girisimler manuel veya rotary aletlerin, sicak kondansatorlerin ya da bunlarin cesitli cozuculerle kombine kullanimi ile gerceklestirilebilir. Bu calismada Suleyman Demirel Universitesi Dis Hekimligi Fakultesine basvuran 8 hastada yapilan retreatment tedavileri ve 3 -24 ay arasindaki kontrolleri sunulmustur. Kok kanalinin yetersiz doldurulmasi, periradikuler bolgede lezyon varligi, alet kirilmalari ve/veya hasta sikayetlerinin bulunmasi gibi nedenlerle, daha onceki tedavisi basarisiz kabul edilen hastalara retreatment tedavileri uygulanmistir. Dogru endikasyon sinirlari icinde uygulanan retreatment tedavilerinin basari oranlarini arttiracagi dusunulmektedir. Anahtar kelimeler: Kok kanalinin yenilenmesi, basarisizlik, el aletleri, doner aletler. Abstract Retreatment of Failed Root Canal Therapy When the initial root canal therapy is defined as failed, the reperforming therapy following removal of the root filling is called .retreatment. or .revision.. The case selection, proper technique and equipment as well as detailed assessment of case prognosis affect the success of retreatment. Before applying surgical techniques, orthograd procedures performed endodontically can be realised using manual or rotary instruments, hot condansators or their combination with various solvents. This study presents the 3-24 months follow-up ofthe retreatment cases conducted on the patients who applied to the Dentistry Faculty of Suleyman Demirel University of Isparta. Key words: Retreatment, failure, manuel instruments, rotary instruments