Klinik Bilimler Bölümü Koleksiyonu

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Combined Minimally Invasive Esthetic Rehabilitation of Dental Fluorosis-5-year Follow-up: Case Report
(2024) Dokumacigil, Gökhan; Korkut, Bora; Yılmaz Atalı, Pınar
Dental fluorosis (DF) is a specific esthetic issue characterized by a persistent condition in which there is a disruption in enamel development, leading to the formation of hypomineralized enamel. The resulting unusual appearance varies in intensity, presenting as mildly white and opaque to dark brown, and significantly impacts individuals' esthetic features and self-confidence. The objective of this case report was to assess the efficacy of microabrasion, dental whitening, and resin infiltration in terms of resolving lesions, tracking the sensitivity of teeth, and evaluating patient satisfaction over a period of time. A minimally invasive treatment approach in a 27-year-old woman with severe DF is detailed. The treatment plan involved enamel microabrasion, in-office bleaching, and two weeks of at-home bleaching, followed by resin infiltration for the affected tooth under rubber dam isolation. After a 5-year follow-up, the assessment of the patient's esthetic appearance indicated a successful treatment of teeth affected by DF.
Effect of Delayed Scanning and Scanning Resolution Using Photostimulable Phosphor Plates on Detection of Vertical Root Fracture: In Vitro Study
(2024) Alagöz, Elifhan; Ünver, Tuğba; Yabancı Tak, Ayşegül; Özdemir, Şerife
Objective: Detecting vertical root fractures (VRFs) can be challenging in dentistry due to their subtle and often concealed na- ture. This study aimed to assess the impact of varying resolutions and delayed scanning times of photostimulable phosphor plates on the di- agnosis of VRFs. Can different resolutions and/or delayed scan times enhance the diagnosis of VRFs?Material and Methods: In this in vitro study, forty extracted single-rooted premolar teeth were utilized. The crowns of all teeth were removed, and root canals were prepared. The teeth were divided into 2 groups: 20 study teeth with VRFs and 20 teeth without VRFs. VRFs were created using an Instron machine. All tooth roots were positioned in the premolar region of a dry human mandible and fixed with wax. Subsequently, periapical radiographs were taken using a parallel technique. Radiographs were scanned at 4 different times post-exposure: immediately, 30 minutes later, 2 hours later, and 4 hours later, and at three different resolutions: high speed, high reso- lution, and super high resolution. Statistical analyses were conducted using IBM SPSS statistics 26.0. Results: Intra- and interobserver agreement exhibited substantial to almost perfect ranges of agreement. Statistically significant differences were not observed in the diagnosis of VRFs when comparing different resolutions and scanning times. Conclusion: Varying resolutions and/or delayed scan times did not im- prove the diagnosis of VRFs. In clinical practice, a comprehensive de- tection of VRFs might necessitate a combination of different imaging techniques, immediately scanning, optimizing resolution settings, and clinical assessment.
Preventive Measures for Safer Orthognathic Surgery: Key Points
(Sage Publications Inc, 2024) İsçi, Kemal Devrim; Muluk, Nuray Bayar; Güngör, Enes; Cingi, Cemal
Objectives: The aim of this article is to review safer orthognathic surgery. Methods: The literature survey was performed in PubMed, EBSCO, UpToDate, ProQuest Central databases of Kırıkkale University, and Google and Google Scholar databases. Results: Patients with dentofacial skeletal defects may benefit from orthognathic surgery, which entails surgically modifying parts of the facial skeleton to restore the right anatomic and functional relationship. Careful investigation of the soft tissue via clinical examination and supporting pictures, evaluation of the structure via standardized radiographs, and evaluation of the dental via study dental casts are all necessary to successfully correct maxillofacial abnormalities. Orthognathic surgery can involve either the maxilla, the mandible, or both. Improving the dynamics of nasal airflow may necessitate simultaneous intranasal surgery consisting of septoplasty and reduction of the inferior turbinate. In some patients, a genioplasty and neck liposuction may be recommended to enhance the final result. Le Fort I osteotomy, Le Fort II osteotomy, Le Fort III osteotomy, maxillary segmental osteotomies, sagittal split osteotomy of the mandibular ramus, vertical Ramal osteotomy, inverted L and C osteotomies, and mandibular body segmental osteotomies are all examples of well-established osteotomies that can be used to reposition facial skeletal elements and redefine the face. Conclusion: Preventative strategies for risk-free orthognathic surgery include maintaining blood flow, shielding teeth, bone, and neurovascular systems, and bolstering the patient’s diet.
Effect of the use of remineralization agents before resin infiltration on the treatment of initial enamel lesions: an in-vitro study
(BMC, 2024) Doğu Kaya, Bengü; Manav Özen, Aybike; Yılmaz Atalı, Pınar; Güngör Sarıalioğlu, Ayça; Dalkılıç, Evrim; Alkan, Elif; Tağtekin, Dilek; Türkmen, Cafer
Aim This study aimed to evaluate the effect of the use of remineralization agents before the application of resin infiltration on the treatment of initial enamel lesions. Materials and methods Eighty buccal enamel samples were prepared from human molars, and artificial initial lesions were formed after 96 h of incubation with a demineralizing solution. The samples were randomly divided into 8 groups (n = 10) including a remineralizing agent (Tooth Mousse, Medical Mineral Gel, Remin Pro), resin infiltration (ICON), and a combined treatment of both. Remineralizing agents were applied in pH cycle for 7 days. Baseline, demineralization, and after-treatment fluorescence (FluoreCam and DIAGNOdent Pen), surface microhardness (HMV-2T), surface roughness (M300C), OCT (Maestro-2) and ultrasonic system (Novascope 4500) data were obtained for all groups. The sample surfaces were examined under SEM/EDX (SU3500) at x1000. Data were statistically analyzed using the Two-Way Robust ANOVA and Bonferroni tests (p < 0.05). Results There was no statistically significant difference between the groups for microhardness, roughness, OCT, DIAGNOdent Pen, ultrasound, and FluoreCam size/intensity values (p = 0.582; p = 0.963; p = 0.884; p = 0.923; p = 0.051; p = 0.268; p = 0.793 respectively). The effect of the treatment procedure showed a significant difference (p < 0.001), except for the roughness values (p = 0.984). The lowest Calcium (Ca) ratio (%atomic) was observed in the RI group in the EDX analysis. Conclusion Remineralizing agents and resin infiltration methods may be used in combination or alone in the treatment of initial enamel lesions. Combining remineralizing agents with resin infiltration does not alter the efficacy of the treatment.
Comparison of different methods used in the classification of maxillary gingival phenotype: A diagnostic accuracy study
(WILEY, 2024) Guliyev, Rasul; Lütfioğlu, Müge; Keskiner, İlker
Aims: This study aimed to evaluate the reliability and applicability of novel methods for determining gingival phenotypes and compare them with currently recommended methods. Methods: Six maxillary anterior teeth from 50 systemically and periodontally healthy patients were evaluated using two conventional methods (periodontal probe translucency method [PP] and transgingival measurement with an endodontic file [EF]), and two novel methods (colored biotype probe translucency method [CBP] and transgingival measurement with a Florida probe [FP]). All data were statistically analyzed. Intra-examiner reproducibility and inter-examiner reproducibility for all methods were analyzed using 10 randomly selected patients who were re-evaluated for each analysis. Results: Moderate agreement was found between EF and PP, with statistically significant differences between median gingival thickness (GT) values for thick 0.8 mm (0.5-1.1 mm) and thin 1 mm (0.6-1.7 mm) phenotypes, and a threshold GT value of <= 0.92 mm (p < .001). FP and PP also showed moderate agreement, with statistically significant differences between median GT values for thick and thin phenotypes (0.80 mm [0.40-1.60 mm] and 0.89 mm [0.40-1.60 mm], respectively), and a threshold GT value of <= 0.8 mm (p < .001). PP and CBP values showed a substantial agreement (p < .001). A statistically significant difference was found between median EF values and CBP categories (p < .001); however, paired comparisons showed that the distinction was applicable only between thin and other phenotypes. Conclusion: Although CBP was found to be successful in detecting the thin phenotype, it was not successful in distinguishing between medium, thick, and very thick phenotypes; moreover, it did not appear to offer any advantages over PP. Although FP may be preferable to EF in measuring gingival thickness, the cost of FP is a disadvantage.
Üç Farklı Tek Renkli Rezin Kompozitlerin Mekanik Özelliklerinin Değerlendirilmesi
(Selcuk Dental Journal, 2023) Erol, Beyza; Dönmez, Nazmiye; Güngör Sarıalioğlu, Ayça
Amaç: Bu çalışmanın amacı, üç farklı tek renkli rezin kompozitin yüzey sertliği, yüzey pürüzlülüğü, su emilimi ve suda çözünürlük özelliklerini karşılaştırmaktır. Gereç ve Yöntemler: Supra-nano dolduruculu kompozit (Omnichroma (OC), Tokuyama Dental, Japonya), mikrohibrit dolduruculu kompozit (Essentia(ES),GC,Japonya) ve ultrafine nanohibrit dolduruculu kompozitten (Charisma Topaz ONE(CTO),Kulzer,Almanya) hazırlanan toplam 90 adet örnekten, 30’ar örnek içeren 3 grup oluşturuldu. Kompozit örnekleri 5 mm çapında 2 mm kalınlığında teflon kalıplar kullanılarak hazırlandı. Hazırlanan örneklere alüminyum oksit cila diskleri (Sof-Lex disk, 3M Espe, ABD) ile polisaj yapıldı. Kompozit örneklerin Vickers sertlik değerleri (n=10) (VHN, Shimadzu, Kyoto, Japonya) ve yüzey pürüzlülük değerleri (Ra) (n=10) profilometre cihazı (MarSurf M 300 C, Mahr, Almanya) kullanılarak ölçüldü. Su emilimi ve suda çözünürlük değerleri (n=10) ISO standartlarına (ISO 4049:2009) göre hesaplandı. Verilerin istatistiksel analizi tek yönlü ANOVA ve Duncan testleri kullanılarak değerlendirildi (p<0.05). Bulgular: En yüksek VHN değeri CTO grubunda (42.40±6.39), en düşük VHN değeri ise ES grubunda (26.41±5.69) elde edildi. Kompozit grupları arasında istatistiksel olarak anlamlı fark bulundu (p<0.05). Tüm kompozitlerde alt/üst VHN oranı % 80’in üzerinde olduğu görüldü. Kompozit gruplarının Ra değerleri arasında istatistiksel olarak anlamlı farklılık bulunmadı (p>0.05). En yüksek su emilimi OC grubunda (7.64±3.26), en düşük su emilimi ise CTO grubunda (4.24 ±3.49) elde edildi. Tüm kompozit grupları arasında istatistiksel olarak anlamlı farklılık bulundu (p<0.05). Farklı kompozitlerin suda çözünürlük değerleri arasında ise istatistiksel olarak anlamlı farklılık bulunmadı (p>0.05). Sonuçlar: Bu çalışmada kullanılan tek renkli kompozit rezinlerin yüzey sertliği, yüzey pürüzlülüğü, su emilimi ve suda çözünürlük değerleri kompozit materyalin organik içeriğine ve inorganik doldurucu tipine göre değişkenlik gösterebilir.
Comparative cell viability of dentin-bonding adhesive systems on human dental pulp stem cells: time-dependent analysis
(Research Square Platform LLC, 2024) Kazak, Magrur; Güngör Sarıalioğlu, Ayça; Ozman, Zeynep; Dönmez, Nazmiye
Background Restorative materials are in prolonged contact with living tissues such as oral mucosa, dentin, pulp, periodontal, and periapical tissues. Therefore, the potentially harmful effects of these materials and their components on oral tissues should be evaluated before clinical use. This study aimed to compare the cell viability of different adhesive systems (ASs) on human dental pulp stem cells (hDPSCs). Methods Three ASs that combining methacryloyloxydecyl dihydrogen phosphate (MDP) monomer with new hydrophilic amide monomers [Clearfil Universal Bond Quick(CUBQ), Kuraray Noritake], self-reinforcing 3D monomer [Bond Force II(BFII), Tokuyama)], and dual-cure property [Futurabond DC(FBDC), VOCO] were used. Three (n=3) samples were prepared for each group. Dental pulp stem cells were isolated from ten patients’ extracted third molar teeth. Samples were incubated in Dulbecco’s modified Eagle’s medium (DMEM) for 24 h (h), 72 h, and 7 days (d) to obtain extracts. For the control group, cells were cultured without DBA samples. Cell viability of ASs extracts was measured using a cell proliferation detection kit (WST-1, Roche). Statistical analysis was performed using two-way ANOVA and post-hoc (Duncan) tests (p<0.05). Results At 24 and 72 h statistically significant differences were determined between control and BFII, control and FBDC groups (p<0.05), while no differences between control and CUBQ groups (p>0.05). On the 7th d, statistically significant differences were found between the control and experimental groups (p<0.05), while no differences between experimental groups (p>0.05). A statistically significant difference was detected for the BFII group over the three-time interval (p<0.05). The lowest cell viability was observed for the FBDC group at 24 h, and the difference was statistically significant when compared with 72 h and 7th d (p<0.05). Conclusion All ASs showed different cell viability values at various exposure times. It should be taken into consideration that pH values, as well as the contents of ASs, have a significant effect on the cell viability.
Enamel Matrix Derivative, 58S5 Bioactive Glass, and Fluoride Varnish for Enamel Remineralization: A Multi-analysis Approach
(2024) Güngör Sarıalioğlu, Ayça; Dalkılıç, Evrim; Alkan, Elif; Yılmaz Atalı, Pınar; Tağtekin, Dilek
PURPOSE: This study aimed to evaluate the enamel remineralization efficacy of enamel matrix derivative (EMD), experimental bioactive glass (BAG), and fluoride varnish in vitro. METHODS AND MATERIALS: Artificial initial caries lesions were developed on fifty human enamel specimens using demineralization solution (pH 4.5, 37°C, 96 hours). Specimens were randomly assigned to five groups (n=10): I-5% NaF varnish (Enamelast), II-experimental 58S5 BAG+37% phosphoric acid (PA), III-EMD (Emdogain) + Ethylenediaminetetraacetic Acid (EDTA), IV-EMD+37% PA, V-Control (untreated). All remineralization agents were applied with pH cycling for seven days. The specimens were scanned by spectral domain optical coherence tomography (SD-OCT) at baseline, at demineralization, and after pH cycling. Lesion depths were measured using image analysis software (ImageJ). Lesions were evaluated using surface microhardness (SMH) and two fluorescence methods (FluoreCam and DIAGNOdent Pen [DDPen]). The data were statistically analyzed by Kruskal Wallis, Friedman, and Wilcoxon tests (?=0.05). RESULTS: According to SD-OCT results, fluoride varnish was found to be the most effective agent in reducing lesion depth (p=0.005). All agents increased the SMH values after pH cycling. No significant difference was found among fluoride varnish, BAG, and EMD+PA groups. These SMH values were significantly higher than EMD+EDTA and control groups (p<0.001). All groups showed lower DDPen scores compared with the control group (p<0.001), however, no significant difference was found among the remineralization agents. In FluoreCam assessment, size and intensity values of all treated groups showed improvement. However, there was no significant difference between the treatment groups in terms of FluoreCam size measurements (p=0.186). CONCLUSION: 58S5 BAG and EMD+PA have remineralization capacity as effective as fluoride varnish. EMD+PA showed better SMH and lesion intensity results than EMD+EDTA.
Evaluating the changes in nasal airway volume and nasal airflow after surgically assisted rapid maxillary expansion
(Oral Surgery, Oral Medicine, Oral Pathology, and Oral Radiology, 2022) Alagöz, Elifhan; Ünver, Tuğba; Seker, Elif Dilara; Kurt, Gökmen; Şentürk, Erol; Özdem, Abdullah; Dolanmaz, Doğan
Objective: This study aims to compare the changes in the nasal airway volume and nasal airflow using acoustic rhinometry (AR), rhinomanometry (RMN), and dental volumetric tomography (DVT) after surgically assisted rapid maxillary expansion (SARME). Study design: Our study consists of 13 adults, 3 male and 10 female patients, aged between 15 and 26, with completed skeletal development. In our study, DVT imaging was obtained twice, preoperation and 3 months after expansion. AR and RMN measurements were recorded, and Visual Analog Score (VAS) and Nasal Obstruction Symptom Evaluation (NOSE) Scale surveys were scored at preoperation and 3 months after expansion. Nasopharyngeal-oropharyngeal airway volume and areas were calculated using the Romexis 3.8.3.R (Planmeca, Helsinki, Finland) and Nemotec V2019 (Madrid, Spain) software programs. IBM SPSS Statistics 22 (SPSS IBM, Armonk, New York) was used for statistical analysis. Results: Comparing the preoperation and postexpansion measurements by both software programs revealed a statistically significant increase in the nasopharyngeal airway volume. No statistically significant change was observed in the oropharyngeal airway volume. Furthermore, we found a statistically significant increase in VAS but a significant decrease in NOSE. Conclusion: According to our findings, nasal airway volume increased after SARME, and although there was no significant change in nasal resistance, patients' quality of life increased significantly.
Occluding Efficiency of Different Desensitizing Agents and Er,Cr:YSGG Laser on Dentin Tubules
(Operative Dentistry, 2024) Uslu, Yesim Sesen; Dönmez, Nazmiye; TT, Akalin; H, Ulukapi; Güngör Sarıalioğlu, Ayça
Purpose This study aimed to evaluate the effects of two desensitizers and the Er,Cr:YSGG laser on human dentin tubules, applied alone or in combination. Methods Ninety-six dentin specimens were obtained from extracted third molars and divided into six groups: Group 1: no-treatment (Control); Group 2: nano-hydroxyapatite desensitizer (NhapD); Group 3: NhapD+Er,Cr:YSGG laser (L); Group 4: Er,Cr:YSGG laser (L); Group 5: glutaraldehyde desensitizer (GD); and Group 6: GD+L, respectively. All specimens were evaluated using scanning electron microscopy. The diameter and the number of open dentin tubules, the tubules’ occluding ratio, and the mineral coverage area were measured via the Image J software at 2000× magnification. Atomic force microscopy was used to determine the blocking mechanism of desensitizing treatments and the surface morphology of dentin specimens. One-way ANOVA and Tukey tests were used for statistical analysis. Results The number of open tubules and the mean diameter of tubules for all treatment groups showed statistically significant differences from the control group The NhapD+L group had a significantly lower number of open tubules than the L and GD groups. The NhapD+L and L groups significantly had higher occluding ratios than the other groups. Conclusions The present study showed that the Er,Cr:YSGG laser alone was effective in terms of tubule occlusion and also contributed to increasing the occluding ratio of nano-hydroxyapatite. It may be recommended to use the Er,Cr:YSGG laser with nano-hydroxyapatite desensitizers to achieve effective tubule occlusion.
Management options and long-term follow-ups for permanent double incisors: six to eleven-year case reports
(BMC, 2024) Şen Yavuz, Betül; Sezgin, Batın Ilgıt; Pekel, Barhan; Korkut, Bora; Menteş, Ali
Background: Double teeth are dental anomalies that can lead to aesthetic and orthodontic problems. Case presentation: This report discusses two cases involving the multidisciplinary management of permanent maxillary left lateral incisors fused with a supernumerary tooth in two girls aged 9 and 10. Following intraoral and radiographic examinations, one was diagnosed with fusion, and the other was diagnosed with concrescence. The crown of the fused incisor was separated using a burs and extracted intraorally. The concrescent incisor was separated along its length using a laser and intentionally replanted extraorally. After a 6-year follow-up, no pathological signs were observed in the fused incisor. However, after an 11-year follow-up, external resorption was observed in the concrescent incisor. Conclusions: Both incisors remained asymptomatic throughout the observation period. This case report highlights two different and effective methods employed to preserve the natural function, form, and aesthetics of double incisors.
Etiology of narrow maxilla creating orthodontic and prosthetic treatment difficulties
(Verduci Editore srl, 2023) Akkus, N. Ozdemir; İşçi, Kemal Devrim
Abstract. – OBJECTIVE: Narrow maxilla occurring due to various congenital or acquired causes creates major orthodontic problems and complicates prosthetic dental rehabilitation. The etiologic factors are mostly related to upper airway pathologies that restrict breathing and cause negative pressure at the base of the nose and nasopharynx. The upper and lower airway is a whole unit. Regional anomalies or acquired problems affect the entire system. This can lead to developmental issues and permanent disorders in childhood, which will last their real life. This study was planned to investigate the incidence of nasopharyngeal obstruction originating from allergic rhinitis, turbinate hypertrophy, septum deviation, and adenoid vegetation in children scheduled for orthodontic treatment due to maxillary stenosis.
Timing for extraction of permanent first molars in school aged children : a pilot study
(Tufts University, 2024) Bakkal, Meltem; Yılmaz, Berza; Kaya, Mustafa Sarp; Ünver, Tuğba; Taran, Pınar Kinay; Özdemir, Şerife
Abstract Extraction of permanent first molars (P1Ms) could create gaps, tipping and/or rotating of neighboring teeth, which depend on the extraction timing. This study evaluated the outcomes of P1Ms extraction in children who were classified based on their permanent second molar’s (P2Ms) dental calcification at the time of extraction. In this retrospective study, the evaluations were made for 406 panoramic radiographs (PRs) of children aged 7–14 years who had single P1M extracted. Twenty-nine children having pre- and posttreatment PRs were selected based on the inclusion criteria. First, 2 groups were formed based on the extraction time by using the pre-treatment PRs? Early extraction group (EE) (n = 15) including Nolla Grades 5–6–7, and late extraction group (LE) (n = 14) including Nolla Grades 8–9–10 for P2Ms. Then, the inclination degrees of neighbouring teeth on extraction side and contralateral quadrant (non-extraction) side were measured by using the post-extraction PRs. Mann-Whitney U test was employed, and the statistical significance was set at p < 0.05. The mesial tipping tendency of P2M was significant towards the extraction side both at EE or LE calcification grades of P2Ms (p > 0.05). The mesial inclination degrees of maxillary P2Ms showed no statistically significant difference between the two sides of LE group. The ideal extraction time should be determined according to the dental age to plan an appropriate occlusal maintenance.
Investigating the potential clinical impact of periodontitis on the progression of Alzheimer’s disease : a prospective cohort study
(Springer, 2024) Karaduran, Kübra; Aydoğdu, Ahmet; Gelisin, Özlem; Günpınar, Sadiye
Abstract Objectives This study aimed to investigate the efect of periodontitis and current occlusal relationship on the progression rate of Alzheimer’s disease (AD). Methods Ninety Alzheimer’s patients, who were divided into three groups as Stage I (n=42), Stage II (n=29), and Stage III (n=19), based on the Clinical Dementia Rating Scale, were included in the study. Cognitive status of the patients was evaluated with Standardized Mini-Mental Test (SMMT) at baseline and repeated 6 months later. Clinical periodontal examinations were recorded and occlusal relationship status was classifed according to the Eichner Index. Results Of 90 Alzheimer’s patients, 65 were toothed individuals with periodontitis and 25 were edentulous individuals without active periodontal disease. Stage II and Stage III toothed Alzheimer’s patients had higher percentage of bleeding on probing (BOP%) and clinical attachment level (CAL) values than Stage I patients (p<0.05). Stage III Alzheimer’s patients had signifcantly higher probing pocket depth (PPD) values than Stage I individuals (p<0.05). ?SMMT values showed positive correlation with BOP% (r=0.308, p=0.013) and PPD (r=0.275, p=0.027). Among the evaluated parameters, being in the AD Stage II–Stage III, having periodontitis and age variable had signifcant efects on ?SMMT levels (p<0.05). Conclusions Within the limits of our study, it can be concluded that periodontitis may increase the severity and also accelerate the progression rate of AD. Clinical relevance These results are precious to show the necessity of proper oral hygiene activities and regular dental visits in patients with toothed AD. Clinical trial registration This study was registered and approved by clinical trials (NCT05807100).
Farklı beyazlatıcı diş macunlarının minenin renk değişimi ve yüzey pürüzlülüğü üzerindeki etkilerinin in vitro olarak değerlendirilmesi
(Dergi Park, 2023) Güngör Sarıalioğlu, Ayça; Örcün, Muhammet Enes; Dönmez, Nazmiye
Amaç: Farklı içeriklere sahip dört beyazlatıcı diş macununun sığır dişi minesinin renk değişimi ve yüzey pürüzlülüğüne etkisini değerlendirmektir. Gereç ve Yöntemler: Çalışma, 40 adet sığır kesici dişinin mine yüzeyleri üzerinde gerçekleştirildi. Kahve solüsyonunda renklendirilmiş dişler uygulanacak diş macununa göre 5 gruba ayrıldı: Signal White Now Gold (WNG), Colgate Optic White Expert (OWE), Colgate Optic White Charcoal (OWC), Rocs Sensation Whitening (SW) ve Kontrol grubu (distile su) (n=8). Örneklerin renklendirme sonrası ve fırçalama prosedürü sonrası yüzey pürüzlülükleri profilometre (MarSurf M300C, Mahr, Gottingen, Almanya) cihazı ile, renk ölçümleri spektrofotometre (VITA Easyshade, Zahnfabrik, Almanya) cihazı ile yapıldı. Örnekler şarj edilebilir diş fırçası kullanılarak 1:3 oranında distile su +macun karışımı ile 5 dk boyunca fırçalandı. Renk analizinde CIEDE2000 renk formülasyonuna uygun olarak L*, a*, b* değerleri kaydedildi ve ?E00 değerleri hesaplandı. Verilerin istatistiksel analizi tek yönlü ANOVA ve Post hoc Tukey testleri kullanılarak değerlendirildi (p<0.05). Bulgular: Örneklerin renklendirme sonrası ve fırçalama sonrası ölçülen pürüzlülük değerleri arasında istatiksel olarak anlamlı bir fark tespit edildi (p<0.001). En yüksek pürüzlülük değişim yüzdesi (?Ra) WNG grubunda gözlenirken (-55.16±3.77), en düşük ?Ra OWC grubunda bulundu (-39.73±8.84). Renk değişimi değerlendirildiğinde tüm beyazlatma macunları ile kontrol grubu arasında istatistiksel olarak anlamlı fark bulundu (p=0.004). Diş macunları arasında ise beyazlatma etkinlikleri açısından istatistiksel olarak anlamlı bir fark bulunmadı (p>0.05). En düşük ?E00 Kontrol grubunda elde edilirken (2.74±0.09), en yüksek ?E00 OWC grubunda görüldü (5.4±0.88). Sonuç: Çalışmada kullanılan beyazlatıcı diş macunları sığır dişlerinin mine yüzey pürüzlülüklerinde azalmaya sebep olmuş ve tüm gruplarda kayda değer bir beyazlatma elde edilmiştir.
Protetik amaçla kullanılan fiberler
(Efe Akademi Yayınları, 2022) Dede, Merve
Fiberler, diş hekimliğinde son yıllarda akrilik protezlerde, kanal tedavili dişlerde post olarak, ortodontik tedavilerde, periodontal tedavilerde dişlerin splintlenmesinde, kraniyofasiyal operasyonlarda, geçici restorasyonlarda, implant yüzeylerinde biyoaktif cam materyali olarak kullanılmaktadır (Tanimoto, 2018; Perea-Lowery, 2018). Oklüzal kuvvetler ve gerilme kuvvetleri karşısında dayanıklılığı, hafif olması, estetik bakımdan iyi olması, biyouyumlu olması, klinik ömrünün uzun olması, uygulamasının kolaylığı gibi nedenlerle fiberler kabul görmüşlerdir (Schwartz & Robbins, 2004). Dişhekimliğinde fiberler, çeşitli türlerde ve biçimlerde kullanılmaktadır. Karbon fiberler (Schreiber, 1971), aramid fiberler (John ve ark., 2001), yüksek moleküler ağırlıklı polietilen fiberler (Karacaer ve ark. 2001), kuartz fiberler ve cam fiberler (John ve ark., 2001; Hanza ve ark., 2006; Uzun & Keyf, 2001) gibi çeşitli türlerde fiberler bulunmaktadır. Biçimlerine göre fiberler ise şerit fiberler (Uzun & Keyf, 2001), kırpılmış fiberler (Uzun & Keyf, 2001), örgü fiberler (Uzun & Keyf, 2001), tek yönlü fiberler, çift yönlü fiberler olarak üretilmektedir (Freilich, 2000; Schreiber, 1971). Fiberler, diş hekimliğinde son yıllarda akrilik protezlerde, kanal tedavili dişlerde post olarak, ortodontik tedavilerde, periodontal tedavilerde dişlerin splintlenmesinde, kraniyofasiyal operasyonlarda, geçici restorasyonlarda, implant yüzeylerinde biyoaktif cam materyali olarak kullanılmaktadır (Tanimoto, 2018; Perea-Lowery, 2018). Oklüzal kuvvetler ve gerilme kuvvetleri karşısında dayanıklılığı, hafif olması, estetik bakımdan iyi olması, biyouyumlu olması, klinik ömrünün uzun olması, uygulamasının kolaylığı gibi nedenlerle fiberler kabul görmüşlerdir (Schwartz & Robbins, 2004). Dişhekimliğinde fiberler, çeşitli türlerde ve biçimlerde kullanılmaktadır. Karbon fiberler (Schreiber, 1971), aramid fiberler (John ve ark., 2001), yüksek moleküler ağırlıklı polietilen fiberler (Karacaer ve ark. 2001), kuartz fiberler ve cam fiberler (John ve ark., 2001; Hanza ve ark., 2006; Uzun & Keyf, 2001) gibi çeşitli türlerde fiberler bulunmaktadır. Biçimlerine göre fiberler ise şerit fiberler (Uzun & Keyf, 2001), kırpılmış fiberler (Uzun & Keyf, 2001), örgü fiberler (Uzun & Keyf, 2001), tek yönlü fiberler, çift yönlü fiberler olarak üretilmektedir (Freilich, 2000; Schreiber, 1971).
Protez astar malzemeleri
(İksad Yayınevi, 2022) Dede, Merve; Demir, Azize
Dişsiz hastalar için uygulanabilen konvansiyonel tedavi yöntemi olan hareketli tam protezlerde hastalar çoğunlukla alt protezlerinin hareket etmesinden ve çiğneme etkinliklerinin azalmasından şikâyetçidirler. Tam protezlerin dezavantajları özellikle alt protezde retansiyon ve stabilite yetersizliği, kemik yıkımı, çiğneme fonksiyonundaki eksiklikler ve sosyal problemler olarak sıralanabilir. Toplumda yaşlı nüfusun artması ile birlikte popülasyondaki diş eksikliklerinin artması ve buna bağlı olarak protetik diş tedavi ihtiyaçlarının artması beklenmektedir.
Comparison of Cameriere and Demirjian methods for estimating adulthood in Turkish population
(Galenos Publishing House, 2022) Arsan, Belde; Şakır, Merve; Büyük, Cansu; Fişekçioğlu, Erdoğan; Kurt, Gözde
Objective: The current study compares diagnostic performances of Demirjian’s mineralization stage (DS) and Cameriere’s third molar maturity index (I3M) on estimating adulthood in Turkish individuals and to investigate a more suitable cut- off value in a sample Turkish population. Materials and Methods: A retrospective study was conducted on a sample of digital panoramic images of 512 healthy individuals aged between 14 and 23 years old. The diagnostic capabilities were tested with receiver operating characteristic (ROC) curves, sensivities, specificity were evaluated and post-test probabilities were calculated with Bayes’s theorem. Results: The areas under the ROC were 0.88 for DS and 0.89 for I3M. The sensitivity and the specifities of H stage were 41.4%, 97.9% for females and 64.3%, 93.4% for males, and I 3M<0.08 were 46.8%, 97.4% for females and 71.4%, 92.6% for males. The cut-off of the dataset I 3M<0.2 performed better for females, increasing sensitivity to 73.9%, post-test probability to 80.9% while decreasing specificity to 87.2%. Conclusion: I3M<0.2 performed better for females with higher sensitivity values while lowering the highest specificity values. Concerning legal rights and ethics, I3M<0.08 or H stage provide the most accurate and consistent results in adulthood determination in males, whereas in females I3M<0.08 and I3M<0.2 provide sufficient results when a test with the highest specificity is sought.
Depth of cure, mechanical properties and morphology of dual-cure bulk-fill composites
(Universidad de Costa Rica, 2022) Güngör Sarıalioğlu, Ayça; Durmuş, Ali; Kurt, Belma Zengin; Köymen, Safiye Selin; Dönmez, Nazmiye
This study evaluated selected structural and physical properties, such as degree of conversion (DC), Vickers hardness (VHN), and compression strength (CS), of three new dual-cure bulk-fill resin-based composites (RBCs; ACTIVA, HyperFIL, and Fill-Up) and compared them to those of a conventional RBC (Filtek Z250) at three clinically relevant depths. Samples (n=180) were prepared in three depths (2,4, and 6mm). Fourier-transform infrared spectroscopy (FTIR) analysis and VHN and CS tests were performed. The DC value was calculated by considering the relative change in the aliphatic C=C peaks. The fractured surfaces of representative samples were characterized using scanning electron microscopy (SEM). Data were statistically evaluated using two-way analysis of variance and post hoc Bonferroni tests (p<0.05). According to the VHN results, Filtek Z250 showed the highest bottom/top hardness ratio (97.94±1.01) at 2mm thickness and ACTIVA showed the lowest bottom/top hardness ratio (43.48±5.64) at 6mm thickness (p<0.001). According to the FTIR results, the DC decreased with increasing thickness in all materials (p<0.05). Filtek Z250 showed the highest (301±12.4 MPa) and ACTIVA exhibited the lowest (232±17.2 MPa) CS values at 2mm thickness (p<0.05). The lowest CS values were obtained for ACTIVA, and the highest values were obtained for Filtek Z250 for samples with thicknesses of 4 and 6mm, respectively (p<0.05). The structural features of restorative composites, such as the resin chemistry and filler type and content, and the operational parameters (i.e., material thickness and curing conditions) strongly affect crosslinking reactions and thus the DC, VHN, and CS values.
The relationship between stress levels, sleep quality, and oral health-related quality of life in Turkish university students with self-reported bruxism
(Galenos, 2022) Ekşi Özsoy, Hilal; Gaş, Selin; Aydın, Kader Cesur
Objective: This study aimed to investigate the relationship between sleep quality, stress levels, and oral health-related quality of life of university students with self-reported sleep/awake bruxism in Turkey. Materials and Methods: Four anonymous questionnaires [Self-reported bruxism, perceived stress scale (PSS), Pittsburgh sleep quality index (PSQI), and oral health impact profile-14 [(OHIP-14)] were administered to 310 university student volunteers that were randomly selected from the various provinces of Turkey. The participants were required to respond independently to the questionnaires at home and were encouraged to contact the authors for further assistance if needed. Results: Among the study participants, 56.8% were from the school of dentistry and 43.2% from other departments. Of all the participants, 29% had self-reported awake bruxism and 42.3% had self-reported sleep bruxism. A positive correlation was found between the PSS and OHIP-14 results (23.5%) and between the PSQI and PSS (24.6%) results in the students with self-reported awake bruxism (p=0.235, p=0.246; p<0.05). Conclusion: Self-reported awake or sleep bruxism was found to be associated with higher stress levels and sleep disturbances and weaker oral health-related quality of life in university students.

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