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Öğe A novel approach to radiographic detection of growth development period with hand-wrist radiographs: A preliminary study with ImageJ imaging software(2022) Şatır, Samed; Büyükçavuş, Muhammed Hilmi; Sarı, Ömer Faruk; Çimen, TansuAbstractObjective: The purpose of this study is to determine whether or not the ImageJ pro-gram can be used to automatically determine the growth period of the hand and wrist which have different growth-development periods according to the density values in the phalanges in radiographs.Setting and sample population: Our study included hands-wrist radiographs of 270 individuals aged 8–17 years.Material and Methods: The study’s participants were classified into 7 groups accord-ing to their skeletal maturation stage (PP2=, MP3=, MP3cap, DP3u, PP3u, MP3u, and Ru) which included pre- peak, peak, and post- peak periods. The total density values (TDV) and pure density values (PDV) in the distal, medial, and proximal phalanges were calculated using each radiograph in the ImageJ program. Analysis of variance (ANOVA) was used to evaluate the density values and chronological age, and pairwise comparisons were made using the post- hoc LSD test.Results: The total density value was graphically zigzagged in the mesial, distal, and proximal phalanges. However, the pure density value increased continuously until the post- peak period and decreased after the DP3u period until the Ru period. While no significant difference in total density values was observed between the growth periods for all three phalanges, a significant difference in pure density values was observed.Conclusion: It has been demonstrated in the ImageJ program that the peak growth period can be distinguished using the pure density values obtained from all phalanges of the third finger and that this method can be used as an alternative to the growth period detection through artificial intelligence.Öğe Diagnosing Pathological Changes in the Non-thickening Sinus Mucosa: A Retrospective CBCT Study with Psudocolor Imaging(2023) Satir, Samed; Çimen, Tansu; Gülşen, İbrahim Tevfik; Saka, Yunus YiğitObjective: The aim of this study is to test the utility of pseudocolor imaging in the diagnosis and evaluation of the maxillary sinus mucosa, which has a suspicion of pathological change even though no thickening pattern is formed. Methods: Patients with healthy teeth without apical lesions from premolars and molars adjacent to the right and left maxillary sinus on one side (control) and tooth/teeth with apical lesions on the other side (study) were selected (n=17) and included in the study. Cochran’s Q test was used to compare distribution of color anterior (A), medial (M) and posterior (P). Post-hoc analysis was performed using Bonferroni correction. Results: The rate of multicolor in the anterior and medial side of the pathological side (52.9% and 47.1%) was higher than the healthy side (35.3% and 29.4%), and it was not statistically significant (p=0.300 and p=0.290). Independently of the groups (n=34), the ratio of multicolor in color A (44.1%) was significantly higher than in color P (20.6%) (p=0.047). On the pathological side (n=17), the ratios of multicolor in color A and M (52.9% and 47.1%, respectively) were higher than in color P (23.5%), but this difference was not statistically significant (p=0.148). Conclusion: In implant surgery planning, pseudocolor imaging can be an alternative as a non-invasive adjunctive diagnostic method, especially in the evaluation of the sinus mucosa of maxillary posterior edentulous region in patients with unknown dental history.Öğe Diş Materyallerde Kadmiyum Toksisitesi: Ağız Kanserinde Rol Oynayabilir mi? Sistematik Bir Derleme(Akdeniz Üniversitesi, 2022) Şatır, Samed; Çimen, Tansu; Köse, Mehmet Numan; Bozoğulları, Hatice Nalan; Çankaya, Tülin Doğan; Er, KürşatKanserojen/toksik eser elementlerden biri olan kadmiyum, tütüne bağlı oral kanser (OK) araştırmalarında önemli bir alt başlıktır. Kadmiyumun dental materyallerdeki toksisitesi ve OK oluşumundaki rolü PubMed'deki makaleler kullanılarak araştırıldı. Böylece, bu veri tabanından toplam 13 çalışma incelemeye dahil edilmiştir. Dental materyallerdeki kadmiyumun genel olarak toksik etkilere neden olmayacak düzeyde olduğu ortaya konmuştur. Ayrıca tütün ürünleri, gıdalar, hava kirliliği ve içme suyu gibi kadmiyumun önemli kaynaklarının bulunduğu günümüzde kadmiyum kaynaklı OK oluşumunda dental materyallerin etyolojik faktörler arasında olamayacağı söylenebilir.Öğe Effects of Early Unilateral Mandibular First Molar Extraction on Condylar and Ramal Asymmetry(2023) Sürme, Koray; Akman, Hayri; Çimen, Tansu; Akın, MehmetSUMMARY: Craniofacial symmetry is an important factor in creating a harmonious facial appearance. Genetic and external factors may cause the formation of mandibular asymmetry. The aim of this study was to evaluate vertical mandibular asymmetries in adolescents who had unilateral mandibular first permanent molar (FPM) teeth extracted at an early age. The study group consisted of 60 subjects (30 females, 30 males with a mean age of 16.18±1.04 years) who had their mandibular permanent first molar tooth extracted before the age of 12, and the control group consisted of 60 healthy subjects (30 females, 30 males with a mean age of 16.23±0.92 years). Condylar asymmetry index (CAI), ramal asymmetry index (RAI), and condylar-ramal asymmetry index (CRAI) were calculated using panoramic radiographs of the subjects. Independent samples t-test was used to evaluate the differences between groups. CAI, RAI, and CRAI values were similar between male and female subjects in both control and study groups, and no statistically significant difference was found (p>0.05). No statistically significant difference was observed between the group who had their mandibular first permanent molar teeth extracted at an early age and the control group (p>0.05). CAI values were relatively higher in both groups, but there was no significant difference between the CAI, RAI, and CRAI values between the groups.Öğe Efficacy of two different retreatment techniques in removing gutta-percha from root canals: A CBCT study(2025) Özkan, Hatice Büyüközer; Çimen, Tansu; Kaya, Seher; Er, KürşatPurpose: This study aimed to compare the efficacy of two rotary nickel-titanium file systems, ProTaper Universal (PTUR) and Remover (REM), in removing gutta-percha and sealer from root canals. Methods: Forty-five extracted maxillary incisors were selected and prepared with the Revo-S file sys- tem. Root canals were filled with gutta-percha and a resin-based sealer using cold lateral condensa- tion. The teeth were divided into three groups (n = 15) based on the file system used for gutta-percha removal: PTUR, REM, and hand files (H-files, as a control). The time taken for each system to remove the root canal filling was recorded. Three-dimensional images were obtained using dental volumetric tomography to measure the volume of the remaining filling material. Results: Statistical analysis revealed a significant difference in the time required for retreatment and the percentage of residual gutta-percha among the PTUR, REM, and H-file groups (P < 0.05). The H-file group required the longest retreatment duration and left the highest percentage of residual material. While the REM group completed the retreatment faster than the PTUR group, this difference was not statistically significant. Conclusion: The PTUR and REM systems were more efficient and faster than hand files in removing root canal fillings, although none achieved complete removal.Öğe Evaluation of the Parotid Gland with Ultrasonography of Patients with Type 2 Diabetes(Akdeniz Üniversitesi, 2025) Çimen, Tansu; Yaşar, FüsunAmaç Bu çalışmanın amacı tip 2 diyabeti olan hastaların parotis bezi kalınlıklarını ultrasonografi ile değerlendirmektir. Gereç ve Yöntemler Toplam 50 hasta iki haftalık aralıklarla bir gözlemci tarafından iki kez muayene edilmiştir. Her iki parotis bezi nin ultrasonografik incelemesi sırasında prob, hastanın dişleri okluzyondayken transvers (kraniokaudal) ve longitudinal (anteroposterior) yönlerde hareket ettirilmiştir. Ölçümler sırasında hasta, başı bir yastığa dayalı olarak düz bir zeminde yatmıştır. Bulgular Kontrol grubunda, sağ parotis bezleri sol parotis bezlerinden anlamlı derecede daha kalındı (p = 0.023). Ancak, tip 2 diyabetli hastalarda sağ ve sol taraflar arasında parotis bezi kalınlığı açısından anlamlı bir fark yoktu (p = 0.275). Tip 2 diyabetli hastalar ile kontrol grubu arasında da parotis bezi kalınlığı açısından anlamlı bir fark yoktu (P > 0.05). Sonuç Ultrasonografi, sistemik hastalıkların baş ve boyun yu muşak dokuları üzerindeki etkisini tespit etmek ve izlemek için ileriye dönük bir tanı testi olabilir, ancak daha fazla araştırmaya ihtiyaç vardır.Öğe EXAMINATION OF MANDIBULAR LATERAL LINGUAL CANAL WITH CONE BEAM COMPUTED TOMOGRAPHY AND ITS RELATIONSHIP WITH ANATOMICAL STRUCTURES(2025) Çimen, Tansu; Saka, Yunus Yiğit; Sargın-Durakoğlu, Ayşe Gökçen; Duruel, OnurcemBackground and Aim: The mandible contains many accessory foramina and canals, particularly on the lingual side. The aim of this study was to evaluate the presence of lateral lingual canal (LLC) and the number, diameter and position of lateral lingual foramen (LLF) using cone beam computed tomography (CBCT). Materials and Methods: CBCT images of 250 patients were retrospectively analyzed. The presence of LLC and the number, diameter and position of LLF were evaluated. The distance between LLF and top of alveolar crest and the distance between LLF and mandibular midline were measured. The effect of gender on numeric values was analyzed by Student’s t-test (p<0.05). Results: LLC was present 55.4% in patients, 53.2% were on the right side and 57.6% were on the left side. The mean diameters of LLF were 0.65±0.24 mm and 0.69±0.23 mm for the right and left sides, respectively. LLF was classified as mono 46.8% for the right side and 51.6% for the left side. LLF was observed more frequently in the second premolar region. The mean values of the distances from the LLF to the midline and to the alveolar crest were 14.30±3.73 mm and 21.07±4.13 mm for the right side and 14.61±3.50 mm and 20.65±4.92 mm for the left side, respectively. No effect of gender on numeric values except left LLF-crest distance was detected (p>0.05). The left LLF-crest distances were 20.59±3.61 mm in females and 20.70±5.86 mm in males (p=0.028). Conclusion: More than half of the participants had LLC in the present study. CBCT imaging can inform surgeons about the presence, number, dimensions and location of LLC and LLF, as well as the presence of possible arterial and vascular structures.Öğe EXAMINATION OF THE MANDIBULAR LATERAL LINGUAL CANAL WITH CONE BEAM COMPUTED TOMOGRAPHY AND ITS RELATIONSHIP WITH ANATOMICAL STRUCTURES(Hacettepe Üniversitesi, 2025) Çimen, Tansu; Saka, Yunus Yiğit; Durakoğlu, Ayşe Gökçen Sargın; Duruel, OnurcemBackground and Aim: The mandible contains many accessory foramina and canals, particularly on the lingual side. There are two main categories of accessory foramina on the lingual side: medial and lateral lingual foramina. The canal structures of these foramina have been labelled "vascular canals" due to their arterial content. The aim of this study to evaluate the presence of lateral lingual canal, diameter, number and position of the lateral lingual foramen using cone beam computed tomography (CBCT). Materials and Methods: In this study, CBCT images of 250 patients who met our inclusion criteria were retrospectively analysed. Results: Lateral lingual canal (LLC) was detected on the right in 53.2% of the patients and on the left in 57.6%. The mean diameter of the lateral lingual foramina (LLF) on the right and left sides was 0.65 ± 0.24 mm and 0.69 ± 0.23 mm, respectively and the number of canals was mono in 88.6% of the right and 92.1% of the left. LLF was observed more frequently in the second premolar region. The mean values of the distance of the right LLF to the midline of the mandible and the alveolar crest top were 14.30 ± 3.73 mm and 21.07 ± 4.13 mm, respectively. The mean values of the distance of the left LLF to the midline of the mandible and the top of the alveolar crest were 14.61 ± 3.50 mm and 20.65 ± 4.92 mm, respectively. Conclusion: CBCT is recommended for preoperative imaging to determine the location and size of LLF to avoid any possible surgical complications. These vital structures must be assessed using precise CBCT evaluation.
