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Öğe Bullying in individuals with cleft lip and palate: A Twitter analysis(WILEY, 2021) Korkmaz, Yasemin Nur; Arslan, Semiha; Büyük, Süleyman KutlamışObjectives: This study aimed to evaluate bullying in individuals with cleft lip and/or palate (CLP) using Twitter analysis. Materials and methods: By using Twitter's advanced search feature, the four selected keywords; bully, bullying, bullied and teased were searched along with the terms cleft lip and palate, cleft lip and cleft palate, respectively. A total of 1010 tweets meeting the criteria were selected. The data were evaluated qualitatively using thematic analysis and the determination of the themes were based on this analysis. Results: Most of the tweets were posted by a layperson (80.8%), while most of the tweets were categorised in the theme criticism of bullying (36%). The tweets were distributed according to their uploader status as irrelevant individuals (60.6%), CLP subjects (26.9%), family of CLP subjects' (12.5%). Of the 1010 tweets evaluated, 707 were identified as negative, while 90 were identified as neutral and 213 were identified as positive. No significant differences were detected in retweet and like numbers between negative, neutral and positive comments (P > .05). Conclusions: Twitter is an important platform, in which the bullying victims with CLP and their families feel free to share their personal experiences of being bullied and how they feel about it, while the others are standing against bullying and promoting social support for these individuals.Öğe Can Tiktok provide reliable information about orthodontics for patients?(Routledge Journals, Taylor & Francis Ltd, 2022) Arslan, Semiha; Korkmaz, Yasemin Nur; Büyük, Süleyman KutalmışThe aim of this study was to investigate the quality and reliability of the information about orthodontics on TikTok by analyzing the related videos using DISCERN tool and Global Quality Scale. Five orthodontic-related "hashtags" were searched, and a total of 250 video posts were reviewed. Non-English and inappropriate content/quality posts were excluded from the study. The videos were evaluated by using Quality Criteria for Consumer Health Information (DISCERN) toolkit and Global Quality Scale (GQS). Most of the posts were posted by dental professionals (68 posts; 55%), followed by dental clinics (23 posts; 19%), layperson (18 posts; 15%), and technician/dental laboratories (13 posts; 11%). The mean DISCERN score (section 1 section 2) for 122 posts was 38.7/75. The mean overall quality of the 122 posts (section 3) in the DISCERN toolkit was 3.15/5. The average GQS score of 122 posts was 3.18 +/- 0.93. The DISCERN and GQS scores did not have significant differences among the groups (p > 0.05). The DISCERN and GQS results of evaluated TikTok video posts were moderate quality. DISCERN and GQS scores did not differ significantly between the groups. Orthodontists should warn their patients about the reliability of information on social media platforms and should guide them to the right resources.Öğe Comparing the effects of three different fluoride-releasing agents on white spot lesion prevention in patients treated with full coverage rapid maxillary expanders(Springer Heidelberg, 2019) Korkmaz, Yasemin Nur; Yağcı, AhmetObjectiveThe aim of this study was to assess the effects of three different fluoride-releasing agents on preventing white spot lesions that occur during treatment with full coverage rapid maxillary expanders.Materials and methodsA total of 48 patients with transverse maxillary deficiency were randomly assigned to four equal groups. A fluoride-containing agent was applied to teeth before cementation of the full coverage acrylic-bonded rapid maxillary expanders in the three experimental groups (gel, varnish, and sealent in groups 1, 2, and 3, respectively), while the control group received no agent application. Quantitative light-induced fluorescence (QLF) images of the patients were obtained before cementation and after decementation of the appliances. Four parameters (Delta F, Delta F-max, A, and Delta R) were evaluated on maxillary ten anterior teeth.ResultsIn the fluoride gel group, upper central and lateral incisors, right first and left second premolars showed significant decreases in fluorescence levels indicating demineralization. Right central and left lateral incisors showed significant white spot lesion formation in the fluoride varnish group. Right and left central incisors and left first premolar were the teeth that mineral loss was observed in the sealent group, while all of the teeth except canines and first premolars showed significant demineralization in the control group.ConclusionsMultifluorid varnish and Proseal sealant were effective on preventing demineralization and should be applied to teeth clinically before appliance cementation.Clinical relevanceDemineralization is a major problem during orthodontic treatment. The application of effective fluoride-releasing agents could prevent this major iatrogenic complication.Öğe Comparison of effects of bracket types and treatment duration on periodontal health of adult patients(Scientific Scholar Llc, 2019) Ustaoğlu, Gülbahar; Korkmaz, Yasemin Nur; Halıcıoğlu, Koray; Uysal, ÖzgeObjective: The aim of this study was to assess the effect of fixed orthodontic treatments with steel-ligated conventional brackets and self-ligating brackets (SLBs) on periodontal clinical parameters. Materials and Methods: Seventy-seven patients (24 male and 53 female) aged between 18 and 30 years were enrolled in the study. Periodontal parameters including plaque index (PI), gingival index (GI), and bleeding on probing (BOP) index were obtained from all the bonded teeth. Results: When the effect of bracket type and duration of treatment on gingival tissues was examined, there was no statistically significant difference between the treatment times (P = 0.670) and bracket types (P = 0.596) in terms of PI. The GI was significantly different between the different treatment durations (P = 0.045); it was higher in patients with a treatment duration of 18-36 months. However, the GI did not change according to the bracket types (P = 0.270). This result was not significantly different between different treatment durations (P = 0.270). There was no significant difference between the treatment periods (P = 0.189) in terms of BOP index, and this result did not change according to the bracket types (P = 0.621). Conclusion: SLBs do not require ligatures, which may facilitate plaque accumulation. However, our results showed that SLBs were not advantageous over CBs in terms of periodontal health.Öğe Comparison of hyoid bone positions and pharyngeal airway dimensions in different body mass index percentile adolescent subjects(Taylor & Francis Ltd, 2020) Korkmaz, Yasemin Nur; Büyük, Süleyman Kutalmış; Genç, EsraObjective Increased body mass index (BMI) is a growing problem worldwide and can affect medical conditions through morphological structures. The purpose of this study was to examine the hyoid bone position and pharyngeal airway dimensions on the sagittal section in different BMI percentile adolescent subjects. Methods Fifty-five adolescent patients were subdivided into three groups, considering their BMI percentiles: Normal-weight (16 subjects), overweight (20 subjects), and obese (19 subjects). A total of 13 linear and angular parameters of head posture angle, pharyngeal airway dimensions, and hyoid bone positions were investigated on 55 lateral cephalometric radiographs. Results Except for one hyoid bone measurement (RGN-H), there was no significant difference among groups. The RGN-H distances of obese and overweight adolescent subjects were higher than normal-weight adolescent subjects. Conclusion Obese, overweight, and normal-weight adolescent subjects were likely to have similar hyoid bone position and pharyngeal airway dimensions.Öğe Comparison of the effects of removable functional appliance therapy applied in pubertal and postpubertal periods: A retrospective cephalometric and fractal analyses study(Mosby-Elseiver, 2023) Korkmaz, Yasemin Nur; Akbulut, Sibel; Bayrak, SevalIntroduction: In this study, we compared the effects of functional treatment with Twin-block appliance on the bony architectures of the maxilla and mandible by fractal dimension (FD) analysis, and the skeletal and dentoalveolar effects by cephalometric analysis, in pubertal and postpubertal patients with Class II malocclusion. Methods: This study comprised 60 patients who underwent Twin-block treatment. Group 1 consisted of 30 patients in the pubertal period (6 boys and 24 girls; mean age 12.27 +/- 1.35 years), whereas group 2 consisted of 30 patients in the postpubertal period (6 boys and 24 girls; mean age 13.73 +/- 1.51 years). FD analysis was performed on the patients before and after Twin-block panoramic and lateral cephalometric radiographs. Cephalometric analysis was also conducted. Paired and Student t tests were used to compare the parametric data, and Wilcoxon signed rank and Mann-Whitney U tests were conducted to compare the nonparametric data. Results: SNB, Pg-N, N-Me, ANS-Me, IMPA, L1/NB, Co-Gn, Go-Gn, S -Go, Co-Go, and Go-Me significantly increased in both groups after treatment. FD values of tuber, condyle, and molar regions significantly decreased in group 1, whereas no significant differences were observed in group 2 after treatment. Conclusions: In the pubertal period, the Twin-block appliance resulted in skeletal correction by causing bone remodeling and reshaping in both jaws along with the dentoalveolar correction. In the postpubertal period, Twin-block had no significant effect on the bone trabecular arrangement in the investigated areas but produced cephalometric improvement to a certain extent with lower skeletal and higher dental impact.Öğe Comparison of the Flexural Strength of Three Different Aged and Nonaged 3D-Printed Permanent Crown Resins(Quintessence Publishing Co Inc, 2024) Korkmaz, Yasemin Nur; Buyuk, S. Kutalmis; Simsek, Huseyin; Abay, FeridunAim: The aim of this study was to evaluate the flexural strength properties of three different aged and nonaged 3D-printed resins built by different 3D printing systems used in dental applications. Materials and Methods: Bars (2 x 2 x 25 mm) were additively fabricated using a 3D printer and different dental crown resins (Saremco Crowntec, Senertek P-Crown V2, and Senertek P-Crown V3) per the manufacturers' recommendations. Each subgroup was divided into aged and nonaged subgroups (n = 10 bars per group). Thermocycling procedures (5 degrees to 55 degrees C; 5,000 cycles) were performed under favorable conditions for the aged subgroups from each material. Flexural strength (MPa) was measured in all samples using a universal test machine. Results: When both aged and nonaged resins are compared, significant differences were found in flexural strength measurements (P <.001). The highest flexural strength was observed in the Saremco Crowntec group, while the lowest flexural strength was observed in the Senertek P Crown V2 group. The flexural strength measurements of Saremco Crowntec and Senertek P Crown V3 displayed no significant difference between their aged and nonaged groups (P >.05), while Senertek P Crown V2 (P =.039) showed significant differences between its aged and nonaged groups. Conclusions: Saremco Crowntec showed the highest flexural strength both in aged and nonaged groups, while Senertek P Crown V2 had the lowest strength. The artificial aging process decreased flexural strength values in all 3D-printed resin groups.Öğe Diş hekimliğinde kullanılan kök hücre tipleri: Literatür derlemesi(2019) Topsakal, Kübra Gülnur; Korkmaz, Yasemin NurKök hücreler, hem rejeneratif tıp uygulamalarında hem de doku rejenerasyonunda kullanılan ve dental dokular da dahil olmak üzere çok çeşitli doku ve organlardan izole edilen prekürsör hücrelerdir. Hem doku mühendisliğinde hem de klinik uygulamalarda kullanılan kök hücreler, odontoblastlardan nöral hücrelere kadar birçok hücreye dönüşebilme yeteneğine sahiptir. Diş hekimliği alanında yetişkin mezenkimal kök hücreler çeşitli oral ve maksillofasiyal dokularda tanımlanmıştır; bu da oral dokuların kök hücrelerden zengin olduğunu ve mukozal hücrelerin indükte pluripotent kök hücreler gibi genetik olarak yeniden programlanmış hücreler için ideal kaynak olabileceğini göstermiştir. Ayrıca oral dokuların kök hücreler için yalnızca bir kaynak değil, aynı zamanda terapötik bir hedef olması da beklenmektedir. Bu derlemede, diş hekimliği alanındaki klinik kullanılabilirlik ve uygulamalar açısından çeşitli intra ve ekstraoral doku kökenli kök hücre tiplerine ve rejeneratif diş hekimliği için uygun kök hücrelere genel bir bakış açısı sunulmaktadır.Öğe Does childhood maltreatment play a role in temporomandibular disorders?(Churchill Livingstone, 2023) Korkmaz, Yasemin Nur; Buyuk, Suleyman Kutalmış; Becet, NursuThe aim of this study was to find out if experiences of maltreatment in childhood have an effect on the occurrence of temporomandibular joint disorders (TMD). The study was conducted on 380 volunteer adults (252 females and 128 males), with a mean (SD) age of 27.63 (9.06) years. The level of TMD was assessed using the Fonseca Anamnestic Index (FAI). Childhood Trauma Questionnaires (CTQ) were completed by the participants and their marital status and educational level were recorded. FAI scores were significantly higher in females than in males. There was no statistically significant difference between gender and total CTQ score. Moreover, there was no statistically significant difference between educational status, marital status, and total CTQ score. FAI scores correlated positively with total CTQ scores in all individuals. Similarly FAI scores correlated positively with total CTQ scores in males and females. Childhood maltreatment is associated with TMDs. Dentists should be aware that possible collaboration with psychiatrists and/or psychologists when treating patients with TMD could increase the success of their treatment. © 2023 The British Association of Oral and Maxillofacial SurgeonsÖğe Effect of mouthwashes on the discoloration of bracket-bonded tooth surfaces: an in vitro study(Springer Heidelberg, 2020) Korkmaz, Yasemin Nur; Bulut, MusaObjectives This in vitro study aimed to investigate the color changes of the bracket-bonded tooth surfaces after the use of 4 different mouthwashes. Materials and methods A total of 100 human premolar teeth were randomly divided into 10 equal groups. Color values (L*a*b*) of the buccal surfaces of each tooth were assessed using a digital spectrophotometer. Then the brackets were bonded. The groups were put either in sterile saline (4 test+1 control) or artificial saliva (4 test+1 control) solutions, and test groups were immersed in their mouthwashes (Colgate Plax, Listerine Cool Mint, Klorhex, and Tantum Verde) for 1 min each in the morning/evening to simulate the mouth washing for 21 days after the bonding. After the debonding and finishing procedures, final color measurements were performed. Color changes ( increment E) were calculated. Results All of the parameters showed statistically significant differences among the groups. The least noticeable color changes were detected in the control groups. The most noticeable color change (Delta E) was observed in the Tantum Verde + artificial saliva group, followed by Tantum Verde + sterile saline and Klorhex + artificial saliva groups, all of which were significantly higher than the control groups. Conclusion The use of mouthwashes during orthodontic treatment may cause noticeable changes in tooth color. Listerine Cool Mint may be the choice of mouthwash with its less discoloring effects. Artificial saliva should be preferred in similar in vitro studies to reflect the oral environment better.Öğe Effects of isotretinoin on new bone formation after maxillary sutural expansion(Urban & Vogel, 2021) Bulut, Musa; Korkmaz, Yasemin Nur; Erimşah, SevilayCorrection to: J Orofac Orthop (2020) 81:440–446 https://doi.org/10.1007/s00056-019-00209-2 The original version of this article unfortunately contained a mistake. The third bullet under the section Materials and Methods should read “Soybean oil (SOY) group: Soybean oil was administered via oral gavage (2 ml/kg) during the nursery period before expansion (an interval of 40 days), and during the expansion (period of 5 days) + retention period (period of 12 days—a total of 57 days)” instead of “Soybean oil (SOY) group: Soybean oil was administered via oral gavage (0.2 ml/kg) during the nursery period before expansion (an interval of 40 days), and during the expansion (period of 5 days) + retention period (period of 12 days—a total of 57 days)”.Öğe Effects of isotretinoin on new bone formation after maxillary sutural expansion(Urban & Vogel, 2020) Bulut, Musa; Korkmaz, Yasemin Nur; Erimşah, SevilayPurpose The aim of this study was to examine the effects of isotretinoin on new bone formation after maxillary sutural expansion in rats. Materials and methods A total of 32 maleWistar rats were selected and randomly divided into four groups. The isotretinoin group was treated with 7.5mg/kg isotretinoin, and the soybean group was treated with 2ml/kg soybean oil for 57 days. The substances were applied via oral gavage. The expansion-only and the control groups were not treated with any substance. In the experiment groups, expansion springs were applied on day 41 of the experiment, and after day 5 of expansion, a 12-day retention period was established. At the end of the experiment, all the animals were sacrificed, and their maxillae were dissected for histological evaluation. The numbers of osteoclasts, osteoblasts and formation of new bone and capillaries were evaluated on slides centered around the suture. Results The statistical analysis showed significant differences between the groups for the number of osteoblasts and osteoclasts (p< 0.001). In the experiment groups, higher numbers of osteoblasts and osteoclasts were detected in comparison to the control group (p< 0.001), while there was no significant difference between the experiment groups. Capillary formation and new bone formation in the isotretinoin group were found to be on a higher level than in the other groups (p< 0.001). Conclusion Isotretinoin had no negative effects on bone formation following the expansion of the maxillary suture in rats.Öğe Effects of reverse headgear therapy on mandibular trabecular structure: A fractal analysis study(Wiley, 2022) Arslan, Semiha; Korkmaz, Yasemin Nur; Büyük, Süleyman Kutalmış; Tekin, BeratObjectives The aim of this study was to assess the effects of reverse headgear (RHG) treatment combined with rapid maxillary expansion (RME) on the trabecular structure of the mandibula using fractal dimension (FD) analysis. Methods Forty-four individuals with skeletal Class III malocclusion were selected from the archives and divided into two groups as patients who underwent treatment with RME + RHG (RHG-G, 22 patients) and untreated control group (C-G, 22 patients). The before (T0) and after (T1) treatment lateral cephalometric and panoramic radiographs were collected in the RHG-G and in the control group, radiographs obtained with similar time intervals were grouped as T0 and T1. Cephalometric and FD analysis was conducted on T0 and T1 lateral cephalometric and panoramic radiographs. The intragroup comparison of cephalometric and FD data was performed using paired t test and Wilcoxon Signed Ranks test, while independent t test and Mann-Whitney U test were used for intergroup comparison. Results C-G had higher FD values in the right mandibular corpus and left mandibular ramus values at T0 (P < .05). The only significant difference in the intragroup comparisons was detected in the FD values of the right mandibular corpus in the C-G (P < .05). No significant differences were found in the FD between the groups in any of the areas measured (P > .05). Conclusions RME + RHG therapy did not cause any significant trabecular changes in the mandibula when compared to the control group.Öğe Evaluation of mandibular osseous structure in patients with mandibular asymmetry: A fractal analysis study(Elsevier Science Inc, 2023) Alpaydın, Mehmed Taha; Büyük, Süleyman Kutalmış; Abay, Feridun; Korkmaz, Yasemin NurObjective. We evaluated the effect of mandibular asymmetry on the trabecular structure of the mandible as measured through fractal analysis (FA).Study Design. We divided a sample of 105 patients with skeletal class I occlusion, cervical vertebral maturation CS6, and skeletal vertical dimension ratios within normal limits into right asymmetric, left asymmetric, and symmetric groups. We performed FA on 6 bilateral regions of interest on panoramic radiographs of the patients and calculated the mean fractal dimension (FD) for each region. We performed the Wilcoxon signed-rank and paired t tests to compare the significance of differences in FD between sides within each group and between groups for all regions. Statistical significance was established at P < .05.Results. We found statistically significant differences in mean FD values between the right and left condyles of the 2 asym-metric patient groups. The FD was greater in the left condyle of patients with right asymmetry and in the right condyle of patients with left asymmetry. The right condyle had a significantly greater FD in left asymmetric patients than in right asym-metric patients.Conclusions. The results of FA indicate that asymmetry is characterized by an increase in the mean FD of the condyle that is responsible for the asymmetry. Fractal analysis can be a valuable diagnostic technique in distinguishing trabecular differences in the condylar areas of asymmetric individuals.Öğe Evaluation of the trabecular structure of the mandibular condyles by fractal analysis in patients with different dentofacial skeletal patterns(Exeley Inc, 2021) Korkmaz, Yasemin Nur; Arslan, SemihaObjective: An orthodontic malocclusion may affect the temporomandibular joint structures in susceptible individuals. This study aims to investigate the bone density of the mandibular condyles in patients presenting with different dentofacial skeletal patterns. Methods: Panoramic radiographs of 200 randomly selected patients with a skeletal and dental Class I, Class II division 1, Class II division 2 and Class III malocclusion were evaluated. Bone density of the right and left mandibular condyles was measured using fractal analysis. Results: No significant difference was detected between the right and left condyles in the various malocclusion groups. However, post-hoc tests showed that Class I patients had significantly higher FD values than Class III and Class II division 1 patients in both right and left condyles following intergroup comparisons. The only significant difference between the genders was detected in the left condyle of Class II division 1 patients, as male patients were found to have significantly higher FD values than females. Conclusions: The results of the present study showed that Class II division 1 and Class III patients displayed significantly lower fractal dimension (FD) values in their mandibular condyles when compared to Class I patients. This might be associated with the possible presence of a temporomandibular disorder in Class II division I patients which resulted in changes to condylar structure, and with less bone complexity in the temporomandibular joint of older Class III patients likely due to continued condylar growth.Öğe Investigation of metacarpal bone morphology in normal-weight, overweight and obese adolescent subjects(Galenos Yayincilik, 2020) Korkmaz, Yasemin Nur; Büyük, Süleyman Kutalmış; Şimşek, HüseyinObjective: The prevalence of childhood and adolescent overweight and obesity is increasing in most developed countries. This study aimed to investigate the metacarpal bone morphology in normal-weight, overweight and obese adolescent subjects at different pubertal stages. Materials and Methods: This radiographic study was performed in 124 subjects at different pubertal stages. The subjects were divided into three groups based on body mass index percentile: normal-weight, overweight and obese. The second and fourth metacarpal bone cortical thickness, width and metacarpal index (MCI) were measured on left hand-wrist radiographs. Results: The values of the second and fourth metacarpal bone cortical thickness and width were significantly different among the groups. The second metacarpal bone MCI was significantly different among the groups. Moreover, the values of the second and fourth metacarpal bone cortical thickness, width and MCI in obese and overweight subjects were greater than those in normal-weight subjects. The values of the second and fourth metacarpal bone cortical thickness and width were significantly different in subjects before and after their pubertal growth peak period. Conclusion: The metacarpal bone parameter in overweight and obese adolescent subjects was significantly greater than that in normal-weight subjects.Öğe Investigation of the relationship between the pulp area and chronological age in patients that received and not received orthodontic treatment(Marmara Univ, Inst Health Sciences, 2020) Aydın, Zeliha Uğur; Doğan, Tülin; Bulut, Duygu Göller; Korkmaz, Yasemin NurObjective: In this study, it was aimed to evaluate the relationship between chronological ages and pulp areas of mandibular canine teeth of patients that received and not received orthodontic treatment. Methods: 102 patients that completed fixed orthodontic treatment and between the ages of 13-24, and 102 age and sex-matched control group subjects were included in the study. A total of 204 dental panoramic radiographs taken with the same procedures and with the same device (Soredex; Cranex Novus, Tuusula, Finland) were evaluated in this study. The pulp areas of the mandibular canine teeth were measured using the Image J software (US National Institutes of Health, Bethesda, MD). Data were analyzed statistically. Results: In both the orthodontic group (r = -0,511) and the control group (r = -0,592), there was a negative correlation between chronological age and pulp area. There was no significant difference between the groups in terms of the pulp area and gender (p>0.05). Conclusion: Orthodontic treatment did not result in a significant difference in the correlation between the pulp area and the chronological age.Öğe Orthodontic treatment and pulp stone formation: Is there a relationship?(2019) Korkmaz, Yasemin Nur; Aydın, Zeliha Uğur; Sarıoğlu, BurakObjective: The aim of this retrospective study was to evaluate the effect of orthodontic treatment on pulp stone formation. Methods: The sample population comprised 504 patients (182 males, 312 females) with a mean age of 17.7 ± 2.9 years that underwent orthodontic treatment. The pre-treatment and post-treatment panoramic radiographs of the patients were evaluated to detect pulp stones before and after orthodontic treatment. The data were analyzed using Mc Nemar, Chi-square and Fisher Exact tests. Results: The statistical analysis showed that pulp stone numbers increased significantly after treatment (p<0.05) and there was no statistically significant difference between the sexes in terms of pulp stone enhancement. The increment of pulp stone numbers after treatment was found to be significantly higher in molars than other teeth (p<0.05). In canine teeth, the increase in pulp stones was statistically higher in females than in males (p<0.05). Conclusion: The results of this study showed that pulp stone numbers increased at different percentages after orthodontic treatment in all tooth groups. It may be concluded that orthodontic treatment can affect calcification metabolism of the pulp and orthodontic forces may increase pulp stone formation.Öğe Ortodontide üç boyutlu görüntüleme sistemleri: Literatür derlemesi(2018) Topsakal, Kübra Gülnur; Korkmaz, Yasemin NurÜç boyutlu görüntüleme sistemleri son 20 yıldır ortodontide ve oral ve maksillofasiyal cerrahide popüler teşhis ve öngörü yöntemi olmaya başlamıştır. Bilgisayarlı Tomografi sistemleri üç boyutlu kesit görüntülerinin bilgi üretmek için kullanılabileceğini açıkça göstermiştir. 1980’lerin başlarında araştırmacılar üç boyutlu görüntülemeyi kraniofasiyal deformiteler için geliştirmeye başlamışlardır. Ortodontide üç boyutlu görüntülemenin çeşitli kullanım amaçları vardır. Manyetik Rezonans Görüntüleme (MRG), diğer bir üç boyutlu görüntüleme tekniğidir ve çalışma prensibi açısından farklıdır, avantajı dokuların iyonize edici ışınlara maruz kalmaması, görüntü için incelenmek istenen bölgeye radyo dalgaları gönderilmesi ve hidrojen atomlarının kullanılmasıdır. En son geliştirilen teknoloji ise 3dMD gibi üç boyutlu yüz tarama sistemleridir. Senkronize edilmiş görüntüler ile x,y ve z koordinat düzleminde 3 boyutlu olarak görüntü verirler. Yazılım aynı zamanda görüntü işleme, haritalama ve ölçümler için de kullanılmaktadır ve kusursuz 3 boyutlu görüntüler elde etmek için kamera sistemi ile kalibre edilmiştir. Sonuç olarak üç boyutlu görüntüleme sistemleri son teknolojilere paralel olarak gelişmektedir ve hem diş hekimliğinde hem de özel olarak ortodonti alanında popülerliğini uzun süre koruyacağı şimdiden öngörülmektedirÖğe Prediction of rapid palatal expansion success via fractal analysis in hand-wrist radiographs(Mosby-Elsevier, 2020) Akbulut, Sibel; Bayrak, Seval; Korkmaz, Yasemin NurIntroduction: This study aimed to evaluate the efficacy of fractal analysis of hand-wrist radiography in the decision of conventional or surgery-assisted rapid palatal expansion (RPE). Methods: The study included 48 patients who underwent the RPE procedure. Study groups were as follows: group 1 (successful conventional RPE [n = 24, 5 male and 19 female patients; mean age 6 standard deviation, 15.85 +/- 0.97 years]) and group 2 (failed conventional RPE [n = 24, 5 male and 19 female patients; mean age 6 standard deviation, 15.96 +/- 1.08 years]). Fractal dimension (FD) analysis was conducted on hand-wrist radiographs of the patients for 4 different regions: the epiphysis-diaphysis line of the radius bone and the proximal, medial (MP3), and distal (DP3) phalanxes of the middle finger. A Student t test was performed to compare fractal values between the groups. A receiver operating characteristic analysis was applied to determine the optimal cutoff value of FDs. In addition, a Pearson correlation coefficient was calculated to evaluate the relationship between the fractal values and either age or hand-wrist stage in a second sample group (n 5 90; age range, 8.7-18.7 years). Results: Fractal values of the radius, MP3, and DP3 were significantly increased in the failed conventional RPE group (P<0.05). The optimal cutoff value of the FD for predicting the success of conventional RPE was 1.16 in the radius, 1.18 in proximal phalanxes, 1.29 in MP3, and 1.08 in DP3. There was a positive correlation between fractal values of the radius and age or hand-wrist stages (P<0.05). Conclusions: Within the limits of this study, results revealed that fractal analysis of hand-wrist radiographs might be considered a significant tool in the prediction of RPE success.
