Diş Hekimliği Fakültesi Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/11499/45989
Browse
16 results
Search Results
Article Effect of Food-Simulating Liquids on the Hydrolytic Behavior of Resin Matrix Ceramics(Quintessence Publishing Co Inc, 2024-12) Celik, Ersan; Sahin, Sezgi CinelPurpose: To evaluate the hydrolytic behavior of different CAD/CAM resin matrix ceramics (RMCs) in different food-simulating liquids (FSLs). Materials and Methods: Five different CAD/CAM blocks, one from a polymer-infiltrated ceramic network (PICNs; Vita Enamic [EN]) and four from resin-based composites (RBCs; Lava Ultimate [UL], Cerasmart [CER], Brilliant Crios [BR], and Block HC [HC]) were selected. In total, 40 specimens were prepared for each material, and they were randomly distributed to each FSL. The specimens were initially kept in a desiccator, then placed in 5 mL of liquid at 37 degrees C +/- 1 degrees C for 30 days, and weighed at various time intervals. Percentage mass change (Mg%), sorption (SP), percentage of liquid absorbed (SP%), solubility (SL), percentage solubility (SL%), and percentage of liquid absorbed by the polymer matrix (SPpm) were evaluated. Significance was evaluated at P < .05. Results: Hydrolytic behavior of the materials showed statistical differences in terms of SP, SL, SP%, and SL% values depending on the liquid environment (P= .001). The highest SP values were obtained from the HC material in saliva, and the lowest values were obtained from the BR in ethanol. The highest SL values were obtained from the CER and EN in heptane, and the lowest values were obtained from the HC in ethanol. However, all results detected in the study remained below the ISO threshold values. Conclusions: All materials tested exhibited clinically acceptable hydrolytic behavior over the time tested. In addition to material content, many factors can affect the hydrolytic behavior.Article Mental Foramenin Panoramik Radyografi ve Konik Işınlı Bilgisayarlı Tomografi Görüntüleri Üzerinde Morfolojik Analizi(Selcuk University, 2023-12-25) E., Uzun; B.K., Apaydin; A., TilBackground: The aim of this study was to evaluate the horizontal and vertical position of the mental foramen (MF) relative to the roots of the mandibular teeth and the incidence of anterior loop (AL) in a group of Turkish subpopulations on panoramic radiography and cone beam computed tomography (CBCT) images. It was also to determine whether there was a difference in detecting the incidence of AL between both imaging methods. Methods: This study included 435 patients aged 16 to 80 years who met the inclusion/exclusion criteria. The horizontal position of the mental foramen was determined according to the mandibular 1st premolar tooth (PM1), mandibular 2nd premolar tooth (PM2) and mandibular 1st molar tooth, and its vertical position was determined according to the horizontal line connecting the apex of PM1 and PM2. The incidence of AL was evaluated according to the termination of the inferior alveolar nerve in three different structures. The suitability of the data to normal distribution was tested with the Kruskal Wallis and Shapiro Wilk test, and Chi-square analysis was used to determine the differences between categorical variables. Yates correction and Fisher Exact test were used when necessary. p<0.05 was considered statistically significant. Results: In the study, the most common horizontal position of MF was found between the long axis of PM1 and the long axis of PM2. The most common vertical location of MF was traced below the horizontal line connecting the apex of PM1 and PM2. The termination of the inferior alveolar nerve in MF was most commonly found to be linear. The rate of AL was found to be 17.3% when evaluated with panoramic radiography images, and 21.4% when evaluated with CBCT images. Conclusion: Determining the location of MF and the presence of AL before surgical procedures in the intraforaminal region is important to prevent possible complications in this region. It is thought that CBCT can better guide dentists in terms of the presence of AL in surgical procedures to be performed on the MF region. © 2025 Elsevier B.V., All rights reserved.Article Prevalence of Maxillary Lateral Incisor and Maxillary-Mandibular Premolar Agenesis in Children Living in the Denizli Region(Selcuk University, 2024-12-23) H., Özbey İpekBackground: Tooth agenesis is a phenomenon that occurs commonly as a dental anomaly in humans. The aim of the present study was to evaluate the prevalence of tooth agenesis in a population group in Turkey. Methods: This retrospective study was conducted on-previously taken-panoramic radiographs of 6-and 7-year-old children, who had applied to Pamukkale University Faculty of Dentistry between 2015 and 2022 for dental reasons. Maxillary lateral incisors and maxillary/mandibular premolars that were congenitally missed were noted, while other missing teeth were not evaluated. Results: A total of 1840 panoramic radiographs were examined and the agenesis of maxillary lateral incisors and maxillary/mandibular premolars frequency was found to be 8.15%. The prevalence of missing maxillary lateral incisors was found to be 2.44%, and the prevalence of missing premolar teeth was 5.71%. The teeth most affected by agenesis were the mandibular second premolars. Females were more affected than males (8.88% females; 7.44% males). Conclusion: Since the early diagnosis of missing teeth can provide ideal and conservative treatment and reduce treatment costs, it is important for dentists to have information about early diagnosis and treatments. In this study, it was determined that the prevalence of missing teeth was higher in women than in men. Further genetic studies may elucidate why females are more affected by hypodontia than males. More comprehensive studies should be conducted in the future including the other permanent teeth and more individuals. © 2024, Selcuk University. All rights reserved.Article Citation - WoS: 4Citation - Scopus: 4Effects of Orientation and Postprocessing on the Bonding of 3-Dimensional Printed Brackets To Printable Permanent Crown Resin(Mosby-Elsevier, 2025-03) Cokakoglu, Serpil; Karaokutan, Isil; Buyuk, Suleyman KutalmisIntroduction: This study aimed to evaluate the effects of different printing orientations and postcuring processes on the bonding performance of 3-dimensional (3D)-printed brackets to permanent crown resin. Methods: A total of 90 disk-shaped specimens (2 mm thickness and 10 mm diameter) were manufactured from printable resin material (Formlabs Permanent Crown, Formlabs Inc, Somerville, Mass). The 3D printed brackets were fabricated at 3 build angles (0 degrees, 45 degrees, and 90 degrees) with a 50 mm layer thickness. Each group consisted of 30 brackets. After printing, the postprocessing was performed either with or without glycerin immersion. Each printed resin surface and bracket base were sandblasted with 50 mm aluminum oxide particles before the bonding procedure. The 3D printed brackets were bonded with a conventional orthodontic composite resin (Transbond XT Primer, 3M Unitek, Monrovia, Calif) to printable resin surfaces. After thermal cycling, the shear bond strength (SBS) test was applied, and bonding failure was examined under a stereomicroscope at 103 magnification. Two-way analysis of variance, post-hoc Tukey, and chi-square tests were used for data analysis. Results: Both orientation and postprocessing had significant effects on SBS. The 3D-printed brackets with 90 degrees and glycerin immersion postcuring demonstrated the highest (13.74 +/- 4.52 MPa), whereas 45 degrees orientation without glycerin showed the lowest (7.06 +/- 4.32 MPa) SBS. All specimens had cohesive-type bonding failures mainly accompanied by bracket fractures and without surface damage. The least fracture was found in 3D-printed brackets with the highest SBS. Conclusions: The 3D printed brackets with 90 degrees orientation and glycerin immersion postprocessing demonstrated the best bonding performance when applied to the printable permanent crown resin material. (Am J Orthod Dentofacial Orthop 2025;167:362-70)Article Citation - WoS: 2Citation - Scopus: 2Evaluation of Nursing Students Knowledge on Dental Injuries(Wiley, 2025-02-19) Akgul, Nilgun; Yilmaz, Ebru; Akkurt, OnurBackground/Aims: Emergency department visits for dental issues are mainly related to traumatic injuries. Knowledge of emergency department staff regarding diagnosis and treatment of dentofacial injuries is quite significant for prognosis of teeth and peripheral tissues. The aim of this study is to assess attitude, knowledge, education and self-confidence of undergraduate nursing students, who will work at emergency departments in the future, regarding diagnosis and treatment of dental traumatic injuries. Materials and Methods: This survey was prepared by modifying questions of the previous survey that had been internationally published. It was a face-to-face survey consisting of 15 questions regarding management of the dental traumas. Questions addressing participants' genders and year of study were added to the survey form. The survey was distributed to 1st, 2nd, 3rd and 4th-year undergraduate nursing students. Analysis results were presented in the form of frequencies. Pearson's chi-squared test and the Fisher-Freeman-Halton test were used for analysis of the categorical data. Multiple comparisons were made using the Bonferroni-correction Z test. The level of significance was set at p < 0.05. Results: The survey was responded by a total of 297 participants, including 47 men and 250 women. Participants consisted of 35.4% first-year, 28.6% second-year, 15.5% third-year, and 20.5% fourth-year nursing students. The third-year undergraduate students believed that they had adequate knowledge, and they were also the group that most strongly supported for administration of tetanus vaccine (p < 0.05). No significant difference was observed among nursing students regarding other topics. Students' knowledge and awareness levels respecting particularly avulsion injuries were found to be inadequate regardless of their year of study. Conclusions: Knowledge of most undergraduate nursing students regarding diagnosis and treatment of dentofacial traumatic injuries were insufficient. An additional education is required for students during and after their formal education to manage dental traumas following graduation.Article Citation - WoS: 1A comparison between parents with different attitudes towards topical fluoride application for their children: a cross-sectional study(Quintessence Publishing Co inc, 2025) Ipek, Hilal Ozbey; Bolaca, ArifPurpose: Although fluoride is known to be effective and safe, an increasing number of parents refuse to allow fluoride applications for their children. This study aimed to compare the parents who accepted and rejected fluoride application for their children in terms of their attitudes toward fluoride and vaccinations, sociodemographic characteristics, and source of knowledge. Materials and Methods: In this cross-sectional study, a previously validated questionnaire was administered to 85 parents who did not consent to have topical fluoride applied to their children's teeth (AF group) and the 143 parents who consented to have it applied (F group) in a pediatric dentistry clinic. Data were analysed using the independent t-test and chi-squared test. Results: In the F group, the number of those who disagreed with the statement that fluoride causes intellectual disability, autism, and damages the pineal gland was statistically significantly higher than in the AF group (p < 0.05). The most common source of information for the AF group was the internet/social media (67.06%), while for the F group, it was dentists/ medical doctors (62.24%). More parents in the F group stated that childhood and Covid-19 vaccinations must be performed; this was a statistically significant difference (p < 0.05). Conclusion: No relationship was found between fluoride hesitancy and the educational level of the parents. Most parents in the AF group have doubts and concerns about fluoride rather than being strongly opposed to it. Therefore, educational programs given to parents are likely to have a positive effect on their acquisition of correct information.Article Evaluation of color and translucency changes of peek material veneered with single-shade composite resins(2024-10-15) Karaokutan, Isil; Ayvaz, İlaydaAim: The aim of this study was to evaluate the color and translucency changes of single-shade composites used in veneering polyetheretherketone (PEEK) material after aging. Materials and Methods: 3 single-shade composites with different chemical structures and 1 conventional composite resin were applied on the PEEK material with a thickness of 2 mm (N=40, n=10). L, a, and b color coordinates of each specimen were measured three times with a spectrophotometer on a black, gray, and white background from the center of the specimen, and the average of these measurements was recorded. The specimens were subjected to 5000 cycles of thermal aging at 5-55°C. After aging, color measurements were repeated. Color changes (ΔE00) and translucency parameters (ΔTP00) of composite resin specimens were determined before and after aging using CIEDE 2000 color formulas. The data obtained were analyzed by one-way analysis of variance and Tukey HSD test (p<0.05). Results: As a result of the study, the color change of all composite resin materials was found to be below the clinically acceptable limit (ΔE = 1.8). The lowest color change was observed in the traditional composite group, and a statistically significant difference was found between the other groups (p<0.05). The translucency change of single-shade composite materials was found to be statistically lower than that of conventional composite resin (p<0.05). Conclusion: This study's results show that single-shade composite resins can be used as an optical alternative to traditional composites in direct veneering of the PEEK material.Article 9-14 Yaş Çocuklarda Daimi Birinci Büyük Azı Dişlerinin Tek ve İki Seanslı Kök Kanal Tedavileri(Galenos Publ House, 2023-09-01) Ertugrul, Ceylan Cagil; Gun, Ayse IpekAmaç: Çocukların daimi birinci büyük azı (DBBA) dişlerine tek seansta ve iki seansta yapılmış kök kanal tedavilerinin (KKT) postoperatif ağrı ve 2 yıllık takip bulgularının incelenmesi amaçlanmıştır. Gereç ve Yöntemler: Dokuz-14 yaş arası çocuk hastaların kök ucu kapanmış DBBA dişlerine tek veya iki seansta uygulanmış KKT geriye dönük incelenmiştir. Tek seansta KKT yapılmış dişler grup 1, iki seansta KKT yapılmış olan dişler grup 2 olarak ayrılmıştır. Postoperatif ağrının değerlendirilmesinde tedavi sonrası ilk 48 saatte rutin olarak anamnez formlarına kaydedilmiş olan vizüel analog skala verileri kullanılmıştır. Her iki gruptaki KKT’nin 2 yıl sonundaki başarı durumu klinik ve radyografik olarak incelenmiş ve periapikal dokuların iyileşme durumunun belirlenmesinde periapikal indeksinden (PAI) yararlanılmıştır. Verilerin istatistiksel analizinde ki-kare ve Kruskal-Wallis analizleri p<0,05 anlamlılık düzeyinde kullanılmıştır. Bulgular: İki yılın sonunda 1. grupta 27, 2. grupta 24 olmak üzere toplam 51 KKT incelenmiştir. Gruplar arasında postoperatif ağrının mevcudiyeti ve şiddeti açısından anlamlı farklılık tespit edilmemiştir (p=0,798). Birinci grupun başlangıç PAI skoru ortalaması 1,96±1,13 iken 2 yıl sonunda 1,81±1’e düşmüştür. İkinci grupta ise bu değer başlangıçta 2,08±1,59 ve 2 yıl sonunda 2,08±1,35 olarak tespit edilmiştir. Ortalama PAI skorları açısından başlangıçta (p=0,683) ve 2 yıl sonunda (p=0,670) gruplar arasında anlamlı farklılık olmadığı gözlenmiştir. Sonuç: Dokuz-14 yaş grubu çocukların DBBA dişlerine tek seansta ve iki seansta yapılmış olan KKT’nin postoperatif ağrı ve 2 yıllık periapikal iyileşme durumu açısından anlamlı farklılık göstermediği tespit edilmiştir.Article Citation - WoS: 8Evaluation of the Effects of Favipiravir Combined with Vitamin C on Alveolar Bone in Rats(Pleiades Publishing Inc, 2022-03) Alpan, A. Lektemur; Cin, G. Torumtay; Ozmen, O.; Dogan, M. F.; Sahin, Y.Introduction: Favipiravir and Vitamin C (Vit C) were used together in the treatment of the COVID-19 pandemic. However, the effects of favipiravir on the periodontium are still unknown. Therefore, the aim of this study was to investigate the effects of Favipiravir and Vit C treatment on alveolar bone metabolism. Experimental: Fifty healthy adult male Sprague-Dawley rats (2-3 months old) were randomly divided into five equal groups (n = 10): Control, Favi 20, Favi 100, Favi 20+Vit C, Favi 100+Vit C. Favipiravir (20 mg/kg and 100 mg/kg, i.m.) and Vit C (150 mg/kg/day, oral) were administered to the rats for 14 days. Alveolar bone loss (ABL) and histopathological changes were examined using a light microscope. Immunohistochemistry was used to determine levels of receptor activator of nuclear factor kappa-B ligand (RANKL), caspase-3, bone morphogenic protein 2 (BMP-2) and alkaline phosphaTaşe (ALP) in the bone tissues. Results: Favipiravir increased the levels of RANKL and caspase-3 expression but decreased BMP-2 and ALP levels in a dose-dependent manner. Favi 20+Vit C and Favi 100 +Vit C groups showed decreased RANKL and caspase-3 levels in addition to increased BMP-2 and ALP levels. Conclusion: Favipiravir can cause histopathological damage to the periodontium, but administration of favipiravir combined with Vit C can provide a protective effect against this damage.Article Reliability of Turkish versions of two different oral health indexes for edentulous geriatric patients: A pilot study(2020) Şahin, Sezgi CinelAim: This study aimed to evaluate the Turkish version of the Geriatric Oral Health Assessment Index (GOHAI-TR) and OralHealth Impact Profile for Edentulous (OHIP-EDENT-TR) in edentulous geriatric patients using a total prosthesis.Material and Methods: Twelve items in GOHAI and 19 items in OHIP-EDENT were translated into Turkish using the backtranslationtechnique. A total of 32 complete edentulous geriatric participants answered the GOHAI-TR and OHIP-EDENT-TRindexes twice at two different times (first day and second week). The data obtained from both applications were used forreliability and test-retest analysis. Reliability was analyzed with Cronbach's alpha (?) and test–retest analyses were conductedusing statistical software.Results: The mean item score of GOHAI-TR was found to be higher, especially in terms of physical function negativelyaffecting the quality of life. Cronbach's ? value of GOHAI-TR was found to be 0.897 and it any of the index items did not needto be removed. Similarly, the OHIP-EDENT-TR index showed that the most serious problems among participants were related topsychological discomfort, psychological and social disability, and also handicap. Cronbach's ? value of OHIP-EDENT-TR wasfound to be 0.947 and it was determined that no item was required to be removed from the questionnaire.Conclusion: The GOHAI-TR and OHIP-EDENT-TR indexes can be considered scales with excellent reliability and homogeneityfor edentulous patients. Further studies are needed to elucidate different factors such as bone resorption degrees and period ofedentulousness that may affect oral health and satisfaction in edentulous geriatric individuals.