SDG 3 · Sağlık ve Kaliteli Yaşam · SDG · Kocaeli Sağlık ve Teknoloji Üniversitesi

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MakaleYalnız künye2017Scopus SJRQ3/r/kostu/10792
Biomechanics of Calcified Triglyceride Bone Cement in Repairing Postsurgical Defects: An In Vitro Study
Özden, Bora; Yilmaz, Seda; Bas, Burcu; Özden, Feyza Otan; Duran, Hatice
Repair of postsurgical maxillofacial bone defects is still problematic. Herein, the biomechanical advantages of calcified triglyceride bone cement, a newly developed bioabsorbable graft material, are presented for this purpose. Eighteen ribs from recently killed cows were randomly divided into three groups. In group 1, no defect was created. In groups 2 and 3, mid-section defects (2 cm in diameter) were created, then left empty (group 2) or filled with calcified triglyceride bone cement (group 3). Each rib was subsequently tested on a three-point biomechanical model simulating masticatory compression loads. Mean values (medians) of loads exerted were recorded for statistical analysis. Significant differences were identified in comparing groups 1 and 2 (p = 0.043) and groups 2 and 3 (p = 0.046), but groups 1 and 3 (p = 1) did not differ significantly. Bones filled with calcified triglyceride bone cement are thus comparable to normal bone in terms of mandibular resistance and may display sound biomechanical stability postoperatively.
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MakaleAçık Erişim2014Scopus SJRQ2/r/kostu/10815
Crack Formation on Resected Root Surfaces Subjected to Conventional, Ultrasonic, and Laser Root-End Cavity Preparation
Aydemir, Seda; Cimilli, Hale; Mumcu, Gonca; Chandler, Nicholas; Kartal, Nevin
Objective: The aim of this study was to evaluate cracks on root ends following resection and cavity preparation with a laser and two established techniques. Background data: If root canal treatment of a tooth fails, an apicoectomy operation may be indicated. Three millimeters of the root tip is resected and a cavity of similar depth with parallel walls is cut to receive a root-end filling. Materials and methods: Sixty extracted human maxillary anterior teeth were used. Their root canals were prepared with rotary instruments, and they were filled with gutta-percha. Twenty teeth were resected with tungsten carbide fissure burs, and their root-end cavities cut with tungsten carbide round burs at a slow speed (Group 1). The other 40 teeth were resected with an Er:YAG laser, and root-end cavities were made with the same laser (Group 2), or with an ultrasonically-powered zirconium nitride coated retrotip (Group 3). The number and types of cracks on the resected surfaces were assessed using a stereomicroscope before and after cavity preparation. Results: Cracking was not significantly different between the more conventional group and the laser groups after resections (p > 0.05) or following cavity preparation (p > 0.05). Conclusions: In this in vitro study, the laser resection and root-end preparation technique did not influence the number or type of cracks formed on the root surfaces.
AtıfWoS8OpenAlex19
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MakaleYalnız künye2013Scopus SJRQ2/r/kostu/10808
Evaluation of Preoperative Model Surgery and the Use of a Maxillary Sinus Surgical Template in Sinus Floor Augmentation Surgery
Kocyigit, Ismail Doruk; Coskunses, Fatih Mehmet; Ozgul, Ozkan; Tuz, Hakan Hifzi; Kartal, Yasemin; Polat, Muhlis; Orhan, Kaan
Maxillary sinus augmentation is an accepted technique for dental implant placement in presence of insufficient maxillary bone. There are various techniques in the literature, either by crestal or lateral approach in maxillary sinus augmentation that have high percentage of success, while all have complications. Schneiderian membrane perforation is the most common complication encountered during surgery. The aim of this study was to evaluate the benefits of preoperative model surgery and the ease of use of a maxillary sinus surgical template (MSST) during maxillary sinus augmentation surgery with a lateral approach. Ten patients included in the study needed rehabilitation of a partially or totally edentulous maxilla with an implant-supported fixed prosthesis and requiring sinus augmentation. A questionnaire was asked to performing surgeons, and study results showed the use of an MSST was found to be effective in terms of adaptation (62.5%), window preparation (87.5%), ease of elevation (95.9%), ease of grafting (95.9%), reduction of perforation risk (91.7%), and achieving immobility during the procedure (62.5%); however, the use of an MSST was also found to prolong the surgical procedure (100%) and restrict the view of the surgical area (79.2%). Maxillary sinus augmentation appears to be a useful tool for locating an appropriate entrance to the sinus cavity, allowing for safe elevation of the sinus membrane and effectively grafting the sinus floor.
AtıfWoS4OpenAlex5
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