Diş Hekimliği Fakültesi Ortodonti Anabilim Dalı Koleksiyonu
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Öğe Combined use of retraction and torque arch with mini-screws: A cephalometric study(Aves Yayıncılık, 2018) Amasyalı, Mihri; Sabuncuoğlu, Fidan Alakuş; Karaçay, Şeniz; Doğru, Mehmet; Altuğ, HandanObjective: Our objective was to investigate and quantify the treatment of micro-implant-aided retraction and torque (R&T) arch on dentofacial structures. Methods: Twelve patients (mean age 21.2 years) who required orthodontic camouflage treatment were included in the study. Following the canine distalization, mini-screws were placed between maxillary first molars and second premolars, and R&T arch was applied for the retraction of incisors. The vertical retraction arms of the arch were adjusted between the apex of the lateral incisor and the alveolar bone so that the retraction force passed through the center of resistance of four incisors and forced the incisors to bodily retraction. Closed coil-springs applying 150 gr of force were used to retract the incisors. The retraction period lasted for 217±34 days. Results: SNA and NV-A decreased (p<0.05), indicating alveolar bone remodeling around Point A. The reduction in the SNA caused a statistically significant decrease in the ANB (p<0.01). SN/1, NA/1, NA-1, and overjet decreased significantly (p<0.01), depending on the retrusion of the incisors. The distances from the apex and incisal point of the central incisor to the SV reference plane also decreased significantly (p[removed]0.05). Conclusion: A combined use of R&T arch with mini-screws is an effective method to retract the incisors without anchorage loss. The type of movement is nearly parallel.Öğe Handedness of orthodontists and its impact on practice(Sivas Cumhuriyet Üniversitesi, 2012) Odabaş, Bahar; Dildes, Neval; Genç, Celal; Veli, İlknur; Özer, TorunObjectives: To assess the handedness prevelance of orthodontists and analyse the discomfort of left-handedorthodontists on practice. Materials and Methods: A questionnaire about the laterality of orthodontists and their discomfort was preparedand distributed to our orthodontic society members. 173 questionnaires were investigated.Results: Fifteen of the participants were left-handed individuals. Of all the 15 samples, only 1 practitioner hadbeen educated with left hand manipulation while studying dentistry. One of the 7 private practioners preferredleft-handed chair for his clinic. Regarding left-handed participants working with right-sided chair, 4 of themthought this situation depresses their treatment quality and 9 of them refused. Most of the left-handedparticipants complaint about the university education. Conclusions: Left-handed orthodontists afford to adapt themselves to a right-handed world. They could to beeducated on left-handed dental chairs to display a more skillful clinical performance.Öğe Evaluation of two different imaging software programs in planning orthognathic surgery cases(Uluslararası Diş Araştırmaları Birliği, 2022) Balkı, Mustafa; Doğru, MehmetAim: In this study, we aimed to compare the two-dimensional predictions made by two computer software packages with the postoperative values, and thus to evaluate the clinical reliability of digital orthognathic surgery planning. Methodology: Orthodontic treatment was performed before orthognathic surgery, and the same surgical team performed double-jaw orthognathic surgeries. We included 20 individuals (10 females, 10 males) with skeletal Class III malocclusion. The average age of the individuals was 21.5 years. In our study, the amount of movement was determined using reference lines on lateral cephalometric radiographs obtained from the preoperative and postoperative Cone-Beam Computed Tomography (CBCT) records of 20 individuals. Prediction profiles were formed using Dolphin Imaging (Dolphin Imaging & Management Solutions, Chatsworth, CA, USA) and NemoFAB 2D (Software Nemotec, S.L, Spain) computer softwares. In this way, the reliability and consistency of two-dimensional prediction software were examined. Results: The prediction profiles obtained from the computer software were compared with lateral cephalometric radiographs of the postoperative surgery results for 37 cephalometric parameters. There were no significant differences between software predictions and postoperative results in any cephalometric parameters. Conclusion: The plans and predictions made with the two computer software packages were reliable and can be used clinicall.Öğe The maxillary expansion procedures, the types, and the root resorption analysis methods(Uluslararası Diş Araştırmaları Birliği, 2019) Topal, Refika; Arslan, Seher GündüzTransversal constriction of the maxilla is a common problem and mayoccur due to many reasons. The maxillary expansion procedures can beclassified as rapid maxillary expansion (RME), semi-rapid maxillaryexpansion (SRME), and slow maxillary expansion (SME). In orthodontictreatment procedure, it has been evaluated that it causes root resorptionespecially in the support teeth in many apparatus used for orthodontictreatment and in the expansion apparatus used in the treatment oftransverse direction of maxilla. In this review, we aimed to evaluatemaxiller expansion protocols, and the methods of examining resorptionin support teeth.Öğe Comparison of cephalometric changes resulting from different upper incisor intrusion methods(Uluslararası Diş Araştırmaları Birliği, 2021) Tümen, Demet Süer; Hamamcı, OrhanAim: The aim of this study was to provide intrusion of upper incisors with applying Connecticut Intrusion Arch (CIA) and Miniscrew and to evaluate the dental and skeletal cephalometric effects of these intrusion methods on individuals with deep bite caused by supraocclusion of upper incisors. Methodology: The study includes 40 adults, without making sexual distinction, who have at least 4 mm deep bite caused by supraocclusion of upper incisors. Two study groups each consisting 20 individuals formed as CIA and Miniscrew groups. Skeletal, dental, soft tissue measurements were done on lateral cephalograms and apical root resorption measurements were done on standard periapical radiographs that were taken from upper four incisor teeth. Statistically, Paired Student’s t-test was used in intragroup comparements and independent Student’s t-test was used in the investigation of differences between groups. Nevertheless, the concern of variables that seen as risk factors with the amount of resorption was investigated with Pearson correlation analysis. Results: Successful intrusion of four upper incisor teeth with CIA and Mini screw methods and in-significant difference was determined between two methods. Protrusion of upper and lower incisor teeth decrease in interincisal angle and overbite and increase in overjet was stated by intrusion at both of the methods. The decline of the mesiobuccal cusp of the upper first molar was observed in the CIA method. In soft tissue evaluation, decrease of upper lip length, upper lip thickness and distance of upper and lower lip to the Rickett’s plane was observed. Conclusion: The methods used for intrusion showed to cause similar ratio of root resorption.Öğe Microtensile bond strength of root canal dentin treated with adhesive and fiber-reinforced post systems(Sociedade Brasileira de Hematologia e Hemoterapia, 2019) Başaran, Güvenç; Başaran, Emine Göncü; Ayna, Emrah; Değer, Yalçın; Ayna, Buket Erol; Tuncer, Cudi Mehmetowadays, demand for esthetic restorations has risen considerably; thus, nonmetal esthetic posts made of either highstrength ceramics or reinforced resins, such as fiber-reinforced resin posts, have become more and more popular. Important characteristics of fiber-reinforced posts involve a modulus of elasticity similar to dentin and their ability to be cemented by an adhesive technique. A total of 36 maxillary incisors were divided into four groups. In this study, four adhesively luted fiber-reinforced (glass fiber, quartz glass fiber, zirconia glass fiber and woven polyethylene fiber ribbon) post systems were used. Post spaces were prepared by employing drills according to the protocol established for each group, and each post was adhesively luted with one of three adhesive systems. Three segments per root apical to the cementoenamel junction (CEJ) were obtained by sectioning the root under distilled water with a carbon spare saw. The samples (total of 108 sections) were 2.0±0.1 mm in thickness and they were stored individually in black film canisters with sterile distilled water. In order to determine the bond strength, the bonding area of each specimen was measured, and specimens were attached to a device to test microtensile strength at a speed of 1 mm/min. The analyses revealed no statistically significant differences between the adhesive systems and fiber-reinforced posts. (P> 0.05). However, the coronal portion of the root dentin had the highest bond strength. Adhesive systems used along with fiber-reinforced resin posts demonstrated reliable bondingÖğe Evaluation of the effects of diode laser application on experimental orthodontic tooth movements in rats. Histopathological analysis(Sociedade Brasileira para o Desenvolvimento de Pesquisa em Cirurgia, 2020) Karabel, Mehmet Ali; Doğru, Mehmet İlker; Doğru, Arzum Güler; Karadede, Mehmet İrfan; Tuncer, Cudi M.Purpose: To evaluate the effect of diode laser use on experimental orthodontic tooth movements. Methods: Thirty Rattus norvegicus albinus Wistar were divided into three equal groups (n = 10), two experimentals and one control. Applying 20 g orthodontic force were attached to the maxillary incisors of the rats in all groups. Low dose laser was applied to the surrounding tissues of the maxillary incisors of the rats in the experimental groups. Two exposure times for laser irradiation were used for seven days: t = 12 min (energy dose = 72 J) and t = 9 min (energy dose = 54 J) by a 0.1 W DEKA brand diode laser with wavelength of 980 nm. Results: Osteoclastic activation increased in the 72 J group when compared to control group and decreased in comparison to the 54 J group. Osteoblastic activation was decreased in the 72 J group when compared to the control group and increased in comparison to the 54 J group. Conclusions: Applying 54 J laser energy has been found effective to accelerate the orthodontic tooth movement.Öğe Bond strength of metal and ceramic brackets on resin nanoceramic material with different surface treatments(AVES, 2020) Kara, Mehmet; Demir, Özgür; Doğru, Mehmet İlkerObjective: This study aimed to evaluate the effects of different surface conditoning methods on surface texture and shear bond strength (SBS) of brackets bonded to resin nanoceramic material. Methods: Ceramic specimens were divided into two groups as metal brackets and ceramic brackets. In each group, the following five subgroups were conditoned with orthophosphoric acid (OPA), hydrofluoric acid (HFA), silica coating with Cojet, Nd: Yag laser, and Femtosecond (Fs) laser. Extra samples were used for scanning electron microscopy and 3D profilometer evaluation. Results: All surface conditioning methods caused optimum or higher SBS. Metal brackets had higher SBS than porcelain brackets, but this difference reached statistical significance only in Fs laser group. OPA caused surface modification comparable to HFA because of polymer content of resin nanoceramic. Although Fs laser and Cojet conditioning caused optimum or higher SBS, surface damage of these methods to the resin nanoceramic specimens clearly seen on 3D profilometer. Conclusion: HFA and Nd: Yag laser are effective surface conditioning methods for resin nanoceramics. OPA combined with silane application caused optimum SBS and can be used as an alternative to HFA. Surface texture changes should be considered to determine surface damage while deciding the optimum surface conditioning method for ceramics other than SBS
