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Öğe Assessment of surgical complications related to dental implant surgery using Clavien-Dindo Classification(Selçuk Üniversitesi, 2021) Dilaver, Emrah; Ak, Kivanc Berke; Suzen, Muazzez; Uckan, SinaBackground: The aim of this study is to evaluate the surgical complications encountered in the implants performed by the same surgeon between 2016-2019 using the Clavien-Dindo classification used to grade the severity of surgical complications. Methods: This retrospective study includes a total of 1171 implants performed in 368 cases undergoing dental implant surgery. Complications related to the operation were recorded and these complications were evaluated according to the Clavien-Dindo Classification system. Possible effects of other factors such as age, gender, smoking, Diabetes mellitus and immediate implant placement on complications were also evaluated. Results: A total of 98 complications have been reported, including flap dehiscence, numbness, infection, the apical part of the dental implant in the maxillary sinus, lack of primary stability, and cortical bone perforation. Smoking and immediate implantation were found to be risk factors for flap dehiscence (p <0.05). 54.8% of the complications were in Clavien-Dindo Class I and 28.5% in Class IIIa. According to the Clavien-Dindo classification, gender, age, smoking and Diabetes Mellitus did not increase the severity of the complications encountered. Conclusion: The Clavien-Dindo classification could serve as a useful in dental implant surgery both for standardization of complications and to help clinicians understand the consequences of complications. Wide range of using the Clavien-Dindo classification system would allow comparisons of different techniques’ outcome in implant surgery among different surgeons and centers.Öğe Comparative Evaluation of Simultaneous Maxillary Sinus Floor Elevation and Implant Placement with Residual Bone Heights Greater or Less than 5 mm(QUINTESSENCE PUBLISHING CO INC, 2015) Soydan, Sidika Sinem; Cubuk, Secil; Bayrak, Burcu; Uckan, SinaPurpose: Implants can be inserted simultaneously during sinus floor elevation (SFE), or 6 months later, for posterior maxillary rehabilitation. The residual bone height (RBH) is a major factor that affects the type of surgical procedure that will be performed. The aim of this study was to compare the survival rates of implants inserted during one-stage SFE with two different RBHs (< 5 mm and >= 5 mm). Materials and Methods: This study consisted of implants inserted into an RBH of either < 5 mm or >= 5 mm, and the survival of the implants was assessed according to the clinical symptoms of the patients: pain or tenderness during function (or spontaneously), mobility, depth of probing, exudation history, and radiographic bone loss at the final follow-up appointment. The survival rates of the two groups were statistically compared using the Fisher exact test. Results: Fifty-nine consecutive patients (29 women and 30 men) undergoing a onestage sinus elevation procedure simultaneously with implant insertion were included in this study. Fifty-one implants were placed in the study group (RBH: 1 to 4.9 mm), and 31 implants were placed in the control group (RBH: 5 to 8 mm). The survival rate of the implants in the study group was 94.2% at the 5.4-year follow-up and 95.8% in the control group at the 7.9-year follow-up. There was no statistically significant difference between the groups in terms of the implant survival rate (P = .785). Conclusion: The results of this study suggest that SFE with simultaneous implant placement in patients with an RBH < 5 mm can be accomplished, and that the survival rate is similar to that of the one-stage SFE protocol with an RBH of > 5 mm.Öğe Comparison of stability of 2.0 mm standard and 2.0 mm locking miniplate/screws for the fixation of sagittal split ramus osteotomy on sheep mandibles(CHURCHILL LIVINGSTONE, 2011) Oguz, Yener; Saglam, Haci; Dolanmaz, Dogan; Uckan, SinaTen unembalmed adult sheep mandibles were used. The mandibles were sectioned in the midline, followed by sagittal split ramus osteotomies to obtain 20 hemimandibles. Each distal segment was advanced 5 mm on each hemimandible. Ten of the specimens were fixed with 4-hole extended 2.0 mm titanium miniplates and screws and the other 10 were fixed with 4-hole extended 2.0 min locking miniplates/screws. Each fixed specimen was mounted on a servo-hydraulic testing unit with the fixation device, and was tested to a range of forces of 0-140N. The displacement values (mm) under 20, 60, 120, and 140N were compared with the help of the Mann Whitney U-test, and there were no significant differences between them at any force tested. Locking miniplate/screws and standard miniplate/screws showed similar displacement values at the range of forces tested. (C) 2010 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.Öğe Does Low Gonial Angle Affect the Amount of Bone Loss Around Implant in The Posterior Mandible?(Selçuk Üniversitesi, 2021) Dilaver, Emrah; Suzen, Muazzez; Ak, Kivanc Berke; Uckan, SinaBackground: The purpose of this study was to investigate whether there is a role of the low gonial angle on marginal bone resorption around the implants placed in the posterior mandible. Methods: This retrospective study, including 20 patients with 46 implants followed 36 months were inserted in the mandibular edentulous posterior area. Patients without systemic disease were included in this study. The gonial angle was measured on a panoramic x-ray; Patients with a gonial angle of more than 1250were classified as high gonial angle, and those with less than 1200 were classified as a low gonial angle group. Mesial and distal marginal bone resorption and implant angulation with the occlusal plane were measured via Image J software (National Institutes of Health; version 1.5i, USA). Independent samples ttest was used to compare measured variables between high and low gonial angle groups. Results: The mean marginal bone resorption (MBL) was 0.27±0.16 mm for the mesial side and 0.27±0.13mm for the distal side in the LGA group. In the HGA group, MBL was 0.77±0.28mm for the mesial side and 0.71±0.27mm for the distal side. There was no statistical significance between HGA and LGA groups regarding marginal bone resorption. However, implant angulation with the occlusal plane was correlated with marginal bone resorption in the HGA group. Conclusion: The result of this study is that a low gonial angle is not directly a risk factor for marginal bone resorption around the dental implant. However, implants should be placed perpendicular to the occlusal plane as possible in the HGA group.Öğe Immediate mechanical stability of sagittal split ramus osteotomy fixed with resorbable compared with titanium bicortical screws in mandibles of sheep(CHURCHILL LIVINGSTONE, 2006) Cilasun, Ulkem; Uckan, Sina; Dolanmaz, Dogan; Saglam, HaciTen fresh mandibles from adult sheep were stripped of all soft tissues and sectioned in the midline. We did sagittal split osteotomies and 5 mm advancement on all the 20 hemimandibles. Ten hemimandibles were fixed with three 2.0 mm x 13 mm titanium bicortical screws, and the other 10 were fixed with three 2.0 mm x 13 MM poly-L-lactic acid/polyglycolic acid (PLLA/PGA) bicortical screws in an inverted L pattern. All the hemimandibles were then mounted in a servohydraulic testing unit and tested to permanent deformation. Maximum forces that the mandibles resisted before breaking, maximum displacements, and the displacement values under 20, 60, 120, and 150N were compared using the Mann-Whitney U-test. There were no significant differences in stability between the bones fixed with titanium and those fixed with resorbable screws. (C) 2005 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.Öğe Mandibular midline distraction using a simple device(MOSBY-ELSEVIER, 2006) Uckan, Sina; Guler, Nurhan; Arman, Ayca; Mutlu, NecipObjective. Mandibular midline distraction osteogenesis represents a new option for creation of intra-arch space in the mandibular arch. The aim of this paper is to introduce a simple device (hyrax expander) and method for mandibular midline distraction. Study design. The sample consisted of 24 patients (mean age: 18.07 years) treated with mandibular midline distraction. Hyrax expanders were used as symphyseal distractors, and distraction procedure was carried out with a rate of I mm and rhythm of twice daily. Results. Mandibular midline distraction was completed successfully in all patients and the distraction amount was 7.01 mm. No major complication other than mild mucosal irritation and gingival recession was observed. Conclusion. The presented method is a viable option for mandibular midline distraction osteogenesis.
