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    Comparison of Play Dough and Bread Dough with Ballistic Gel as Soft Tissue Simulator: An Ex-Vivo Study with Sheep's Head as the Gold Standard
    (Pera Yayincilik Hizmetleri, 2025) Cimen, Tansu; Saka, Yunus Yigit; Gulsen, Ibrahim Tevfik; Kose, Mehmet Numan; Satir, Samed
    Objective: This study aims to test the usability of bread dough, play dough, and ballistic gel in soft tissue simulations by comparing them with a sheep's head as the gold standard. Cone beam computed tomography (CBCT) images of the sheep's head was obtained as the gold standard. Methods: The sheep's head was re-covered with ballistic gel, play dough, and bread dough, respectively. Two different CBCT images (protocol A-FOV: 8x15cm, 90kVp, 6.3mA, 4.5s, 0.35mm-voxel size, 574 mGy cm(2); protocol B-FOV: 13x15cm, 90kVp, 5mA, 8.1s, 0.30mm-voxel size, 823 mGy cm(2)) were obtained from the gold standard and each simulation model. The Hounsfield unit (HU) feature in the software of the CBCT was used to evaluate gray values. Pearson Correlation Coefficient was used to examine the relationship between variables that comply with normal distribution, and Spearman's rho Correlation Coefficient was used to examine the relationship between variables that do not comply with normal distribution. The significance level was taken as p < 0.05. Results The highest positively significant correlation with the gold standard in the mandible was with bread dough (r = 0.944, p < 0.001), while in the maxilla it was with play dough (r = 0.879, p < 0.001). The highest positive significant correlation with the gold standard in gray values selected from teeth and bone was with ballistic gel (r = 0.762, p=0.004; r = 0.638, p=0.008, respectively), while in pulp it was with play dough (r = 0.874, p < 0.001). A very high, positive, and significant correlation was found between protocols A and B of all simulation models. The highest positive significant correlation of the gold standard protocol A was found with the ballistic gel simulation protocol B (r = 0.893, p < 0.001). Conclusion: Play-dough can be an alternative soft tissue simulator to ballistic gel, especially in ex vivo studies on pulp morphology.
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    Öğe
    Diagnosing Pathological Changes in the Non-thickening Sinus Mucosa: A Retrospective CBCT Study with Psudocolor Imaging
    (Galenos Publ House, 2023) Satir, Samed; Cimen, Tansu; Gulsen, Ibrahim Tevfik; Saka, Yunus Yigit
    Objective: 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.
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    Öğe
    Evaluation of symphysis donor site quantity by cone-beam computed tomography and its relation to anterior loop of mental foramen: an observational study
    (Bmc, 2025) Cimen, Tansu; Saka, Yunus Yigit; Ataman-Duruel, Emel Tugba; Duruel, Onurcem; Yilmaz, Hasan Guney; Tozum, Tolga Fikret
    ObjectiveFor severely atrophic alveolar ridges, block grafting procedures are usually decided to use for reliable results. Various intraoral donor sites for autogenous block graft are presented in the literature. However, vital anatomic structures can limit intraoral bone block graft surgeries, and they must be evaluated in detail. The aim of this study is to evaluate the dimensions and volume of the maximum potential symphysis block graft donor site and their relations to the anterior loop of mental foramen.Materials and methodsAccording to inclusion criteria, 408 cone beam computed tomography (CBCT) images were evaluated. Mental foramen diameter, anterior loop length, the maximum potential symphysis graft dimensions (height, width, and length) and volume were measured.ResultsPrevalence of anterior loop of mental foramen was calculated 30.15% (123 patients) for right and 29.66% (121 patients) for left sides. The length of anterior loop of mental foramen was measured for right and left side 4.470 +/- 1.355 and 5.223 +/- 1.599, respectively. The maximum potential symphysis graft height, width, length, and volume were 13.253 +/- 3.261 mm, 12.694 +/- 1.711 mm, 34.353 +/- 2.944 mm, and 3.102 +/- 1.013 cm 3, respectively. Presenting anterior loop has no significant effect on the maximum potential symphysis graft height (P = 0.560) and width (P = 0.242). However, the maximum potential symphysis block graft length (P = 0.017) and volume (P = 0.026) were decreased by increasing number of anterior loops of mental foramen.ConclusionThe mandibular symphysis bone block graft can be reliably selected as the donor site for a number of different augmentation procedures. However, there are restrictions owing to surrounding anatomical structures such as mental foramen and anterior loop. These vital structures should be considered using accurate CBCT evaluation. Presenting anterior loop of mental foramen is limiting symphysis bone block graft length and volume.