Journal of International Clinical Dental Research Organization最新文献

{"title":"A comparison of transversal changes occurring in the treatment of rapid maxillary expansion with acoustic rhinometry","authors":"Şule Nur Metli, Mucahid Yildirim, E. A. Erdur, Ömer Erdur","doi":"10.5577/intdentres.434","DOIUrl":"https://doi.org/10.5577/intdentres.434","url":null,"abstract":"Aim: The aim of this study was to determine the relationship between cephalometric transversal measurements and nasal patency before and after rapid maxillary expansion (RME) treatment applied to patients with maxillary transversal deficiency.\u0000Methodology: The records of 30 patients with maxillary transversal insufficiency and 20 patients without normal dentofacial and nasal symptoms were used. Acoustic rhinometry (MCA1, MCA2, VOL1, VOL2) and cephalometry measurements (JR–JL, MMTI, nasal width) were analyzed before (TO) and six months after (T1) RME.\u0000Results: There were no significant differences in age and gender between the groups. After the RME treatment of the patients in the study group, there was a significant increase in the cephalometric measurement (JL–JR, MMTI, nasal width) and acoustic rhinometry measurement parameters (MCA1, MCA2, VOL1, VOL2). Cephalometric measurements showed consistent changes in the patients in the study group, suggesting that RME treatment increased the maxilla’s growth capacity. The postero-anterior cephalometry results improved after RME treatment and approached those of the control group.\u0000Conclusion: Significant improvement was observed in the cephalometric transversal measurements after RME treatment. This improvement indicated that RME increases maxillary growth capacity. There was no correlation between cephalometric and acoustic rhinometry. This result may be due to the inability of postero-anterior cephalometry to effectively evaluate the maxilla-related part of the nasal structures.\u0000 \u0000How to cite this article: \u0000Metli ŞN, Yıldırım M, Erdur EA, Erdur Ö. A comparison of transversal changes occurring in the treatment of rapid maxillary expansion with acoustic rhinometry. Int Dent Res 2022;12(Suppl.1):97-102. https://doi.org/10.5577/intdentres.434\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77435326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the relationship between body mass index and early childhood caries","authors":"Yasemin Derya Fidancıoğlu, M. Güneş","doi":"10.5577/intdentres.447","DOIUrl":"https://doi.org/10.5577/intdentres.447","url":null,"abstract":"Aim: The aim of this study is to determine the relationship between body mass index (BMI) and early childhood caries by using the decayed, missing, and filled teeth (DMFT) index in early childhood.\u0000Methodology: The sample of the study consisted of 133 children, 63 boys and 70 girls, aged 2–6 years, Dental scans of the children were performed by two experienced physicians in line with World Health Organization criteria, using mirrors and probes, in daylight. The DMFT index was employed to determine the number of DMFT. The height and weight of the children were measured and recorded with a digital scale and height ruler during the examination. BMI was calculated by dividing their body weight (kg) by the square of their height in meters.\u0000Results: There was no statistically significant difference between age groups according to gender (p > 0.05). When the DMFT index values according to the BMI classifications of the children participating in the study and the number of caries, missing, and filled teeth of four different groups (weak, normal, overweight, obese) were compared according to the BMI classification, a difference was observed between the groups. The DMFT indexes of the children who were evaluated as obese with an increasing BMI had higher results than those for the other groups (p < 0.05).\u0000Conclusion: More detailed and long-term studies are needed to determine the causal relationship between the variables examined when evaluating the relationship between dental caries and BMI, as well as to formulate appropriate interventions related to these variables.\u0000 \u0000How to cite this article: \u0000Fidancıoğlu YD, Güneş M. Investigation of the relationship between body mass index and early childhood caries. Int Dent Res 2022;12(Suppl.1):65-8. https://doi.org/10.5577/intdentres.447\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84052338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the effect of different experimental acid solutions applied on the zirconia surface on the bond strength between zirconia and resin cement: A pilot study","authors":"Tuba Yılmaz Savaş, A. Savaş, Ceyda Akın, A. Tunçdemir","doi":"10.5577/intdentres.458","DOIUrl":"https://doi.org/10.5577/intdentres.458","url":null,"abstract":"Aim: The purpose of this study is to examine the effects of two different experimental acid solutions and sandblasting on the bond strength between zirconia ceramic core material and resin cement.\u0000Methodology: Forty zirconia core materials were prepared and separated into four groups based on the surface treatment to be applied (n = 10) as follows: 1) Control Group: no surface treatment was performed; 2) Sandblasting Group: the specimen surfaces were sandblasted with 50 µm aluminum oxide particles from a distance of 10 mm at 3 bar pressure for 15 seconds; 3) Sol-1 Group: H2O:HF:H2O2 solution was applied for 60 seconds, washed, and then dried; and 4) Sol-2 Group: H2O:HF:HNO3 solution was applied to the surfaces of the specimens for 60 seconds, washed, and then dried. All specimens were coated with a dual-cure resin cement with a 2.8-mm diameter. After 24 hours, the specimens were tested for shear bond strength (SBS) at 1 mm/min using a universal testing device. Statistical analysis was conducted using one-way analysis of variance (ANOVA) and Tukey HSD tests with a confidence interval of 95%.\u0000Results: The difference among the groups was statistically significant (p = 0.002) based on the one-way ANOVA results. The Control Group had the lowest SBS (8.06 ± 4.52), whereas the Sol-1 Group had the highest SBS (17.10 ± 5.67). The Sol-1 and Sol-2 Groups demonstrated comparable bonding strength values (p = 0.17). The Sandblasting and Sol-1 Groups exhibited considerably stronger bond strength than the Control Group (p = 0.05).\u0000Conclusion: The experimental acid solutions enhanced the bond strength between the resin cement and the zirconia ceramic at the sandblasting treatment level.\u0000 \u0000How to cite this article: \u0000Yılmaz Savaş T, Savaş A, Akın C, Tunçdemir AR. Investigation of the effect of different experimental acid solutions applied on the zirconia surface on the bond strength between zirconia and resin cement: A pilot study. Int Dent Res 2022;12(Suppl.1):69-73. https://doi.org/10.5577/intdentres.458\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77167050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the radiographic results of apexification treatment in children","authors":"Ebru Akleyin, Yelda Polat, Elif Burcu Harman, S. Çelenk","doi":"10.5577/intdentres.2022.vol12.no3.8","DOIUrl":"https://doi.org/10.5577/intdentres.2022.vol12.no3.8","url":null,"abstract":"Aim: This retrospective study aimed to evaluate the radiographic success of apexification treatments applied with different materials and techniques.\u0000Methodology: Periapical radiographs of 224 maxillary incisors in patients between 6 and 12 years of age who had undergone apexification treatment at the Dicle University, Faculty of Dentistry, Department of Pediatric Dentistry were retrospectively examined. Each apex was scored using the periapical index (PAI) on X-rays obtained at 12 months of follow-up after treatment, and the presence or absence of the apical barrier was evaluated. The Kruskal–Wallis H, Mann–Whitney U, and chi-square tests were used for the statistical analysis (p < 0.05).\u0000Results: In the maxillary incisors, apexification was most commonly performed on the maxillary right central teeth (74.11%). The cause for this treatment was trauma in 97.77% of the patients. Enlargement in the periodontal space (95.98%), the presence of lesions (60.71%), loss of lamina dura (54.46%), and external resorption (43.75%) were observed. At 12 months of follow-up after treatment, apical closure (87.95%) was observed in all teeth with open apexes, and the ratio of patients with a PAI of < 2 was 89.35% for calcium hydroxide (CH) apexification and 92.73% for mineral trioxide aggregate (MTA) apexification.\u0000Conclusion: The radiographic success of apexification treatments with CH and MTA was found to be high in 224 immature upper incisors.\u0000 \u0000How to cite this article: \u0000Akleyin E, Polat Y, Harman EB, Çelenk S. Evaluating the radiographic results of apexification treatment in children. Int Dent Res 2022;12(3):158-64. https://doi.org/10.5577/intdentres.2022.vol12.no3.8\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72385599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface roughness evaluation of composite materials polished with one- or multi-step systems","authors":"Gunce Ozan, M. Berkman","doi":"10.5577/intdentres.2022.vol12.no3.9","DOIUrl":"https://doi.org/10.5577/intdentres.2022.vol12.no3.9","url":null,"abstract":"Aim: As the spectrum of composite materials expands in the dental market, it's becoming more challenging to differentiate the structural properties and to find suitable finishing-polishing (f-p) materials. The main goal is to evaluate the impact of one and multi-step f-p systems on the surface roughness (SR) of current composite materials.\u0000Methodology: In this study, nanohybrid bulk-fill (Filtek BulkFill Posterior [FBFP]), nanohybrid (Ceram.x One [CXO]), microhybrid (Filtek Z250 [FZ250]), and giomer bulk-fill (Beautifil Bulk Restorative [BBR]) composites were tested. After sample preparation and 24-h storage in 37 °C distilled water, each main group was assigned to one of two groups (n = 10): a one-step (One Gloss-PS) or a multi-step (Sof-Lex) f–p system. SR values (Ra, µm) were measured using a profilometer. Statistical analysis was done using Tukey HSD and ANOVA tests (p < 0.05).\u0000Results: FZ250 showed the highest Ra values, regardless of the f–p system used. CXO showed statistically significantly lower SR scores than FZ250 (p < 0.05). There were no significant differences among the Ra values of the one- or multi-step f–p systems for FBFP and FZ250. Both the material and f–p systems had a significant effect on the Ra values separately.\u0000Conclusion: FZ250 showed the highest Ra values, and composites polished with the multi-step f–p system exhibited slightly smoother surfaces than those polished with the one-step system.\u0000 \u0000How to cite this article: \u0000Ozan G, Berkman M. Surface roughness evaluation of composite materials polished with one- or multi-step systems. Int Dent Res 2022;12(3):165-70. https://doi.org/10.5577/intdentres.2022.vol12.no3.9\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78748930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of olfactory threshold changes in patients treated with rapid maxillary expansion","authors":"Mucahid Yildirim, E. A. Erdur, Ömer Erdur, Şule Nur Metli","doi":"10.5577/intdentres.435","DOIUrl":"https://doi.org/10.5577/intdentres.435","url":null,"abstract":"Aim: Rapid maxillary expansion (RME) provides an orthopedic effect that solves the problem of transverse deficiency of the maxilla. Moreover, it contributes positively to the functioning of the entire nasopharynx by increasing the cross-sectional area and volume of the nasal tract, thus reducing airway resistance. The aim of this study was to evaluate the changes in olfactory threshold after RME treatment of patients with maxillary transverse deficiency.\u0000Methodology: Olfactory threshold and identification tests as well as acoustic rhinometry parameter (Volume1, MCA1, Volume2, MCA2) measurements were conducted for 40 patients (11–16 years) before treatment (T0) and 6 months after (T1) rapid maxillary expansion application.\u0000Results: A significant improvement was observed when the olfactory threshold values at T0 (0.96 ± 0.07) and T1 (0.79 ± 0.13) (p < 0.001) were compared. A significant improvement was also observed upon comparing the identification test results at T0 (0.63 ± 0.13) and T1 (0.79 ± 0.11) (p < 0.001). The acoustic rhinometry results showed a significant increase in Volume 1, MCA1, Volume 2 and MCA2 in the right and left nasal cavities after treatment (p < 0.001).\u0000Conclusion: In this study, acoustic rhinometry showed that nasal cavity area and volume increased in patients who underwent rapid maxillary expansion therapy. Further, the olfactory functions measured by the olfactory threshold test and identification test improved significantly. \u0000 \u0000How to cite this article: \u0000Yıldırım M, Erdur EA, Erdur Ö, Metli ŞN. Evaluation of olfactory threshold changes in patients treated with rapid maxillary expansion. Int Dent Res 2022;12(Suppl.1):90-6. https://doi.org/10.5577/intdentres.435\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82914049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incidence of white spot lesions and DMFT among patients treated with comprehensive orthodontics","authors":"Hakan Yasin Gönder, Mucahid Yildirim, Şule Nur Metli","doi":"10.5577/intdentres.432","DOIUrl":"https://doi.org/10.5577/intdentres.432","url":null,"abstract":"Aim: The development of new caries lesions in patients undergoing orthodontic treatment is an undesirable side effect of treatment that arises because the fixed appliance tends to accumulate plaque. The aim of this study was to examine the white spot lesions (WSL), caries incidence, and decayed, missing, and filled teeth (DMFT) indices in patients with fixed orthodontic treatments.\u0000Methodology: The records of 150 patients treated at Necmettin Erbakan University Department of Orthodontics between 2018 and 2022 who met the study selection criteria were examined. Traditional methods and 2D color photographs were used to detect cavities. Pretreatment (T0) and post-treatment (T1) recordings were made.\u0000Results: Overall, 118 patients (78.6%) developed at least 1 new WSL during treatment and 49 patients (32.6%) developed active caries lesions. Increases in WSL, caries incidence, and the DMFT index were important during the treatment process. The length of treatment and the number of oral hygiene warnings were significantly associated with the development of new lesions.\u0000Conclusion: Individuals undergoing fixed orthodontic treatment have a significant incidence of WSLs and caries lesions. Patients and physicians should pay strict attention to this problem to effectively prevent caries occurrence during treatment.\u0000 \u0000How to cite this article: \u0000Gönder HY, Yıldırım M, Metli ŞN. Incidence of white spot lesions and DMFT among patients treated with comprehensive orthodontics. Int Dent Res 2022;12(Suppl.1):85-9. https://doi.org/10.5577/intdentres.432\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80823013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of different herbal teas on the color stability of nanohybrid and bulk-fill composites","authors":"M. Tunçdemir, Z. Dereli, Ayşenur Bahar","doi":"10.5577/intdentres.445","DOIUrl":"https://doi.org/10.5577/intdentres.445","url":null,"abstract":"Aim: The aim of this study is to investigate the effects of green tea and rosehip tea, on the color stability of nanohybrid and bulk-fill composite resins.\u0000Methodology: A total of 60 disc-shaped samples were made from two types of A2 resin with nanohybrid (Tetric N Ceram, Ivoclar Vivadent, Schaan, Liechtenstein) and bulk-fill (Filtek Bulk-Fill, 3M ESPE, MN, USA) structure with the help of 10 mm diameter and 2 mm thick Teflon molds in this study. All samples were finished and polished with 4-stage (thick, medium, fine, superfine) polishing discs (Sof-lex, 3M ESPE, MN, USA) and kept in an oven at 37 °C for 24 hours. The samples, whose initial color measurements were made by spectrophotometer, were divided into subgroups for the control group and two different herbal teas (Green tea, Rosehip) (n=10). Color measurements were repeated, and ΔE values were calculated. Wilcoxon, Kruskal-Wallis, and Bonferroni tests were used to analyze the data (p < 0.05).\u0000Results: There was no statistically significant difference in color change between the composite resins (p > 0.05). No significant color change was found for either the Tetric N-Ceram or Filtek Bulk-Fill composite resin samples immersed in distilled water (p > 0.05, ΔE<3.3).\u0000Conclusion: Rosehip and green tea affect the color stability of composite resin restorations. Whereas the color change caused by green tea is at a clinically acceptable level, that stemming from rosehip tea falls within clinically unacceptable levels.\u0000 \u0000How to cite this article: \u0000Tunçdemir MT, Dereli Z, Bahar A. The effect of different herbal teas on the color stability of nanohybrid and bulk-fill composites. Int Dent Res 2022;12(Suppl.1):103-7. https://doi.org/10.5577/intdentres.445\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83547815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of polishing methods on the surface roughness of different temporary restorative materials","authors":"İ. Kavut, Mehmet Uğur, Özgür Ozan Tanrıkut","doi":"10.5577/intdentres.2022.vol12.no3.7","DOIUrl":"https://doi.org/10.5577/intdentres.2022.vol12.no3.7","url":null,"abstract":"Aim: The purpose of this study was to evaluate the effects of different polishing methods on the surface roughness of temporary prosthetic restorations.\u0000Methodology: In this study, 200 specimens were obtained from Structur 2, Imident, FSM Duo CAD, and Han Temp Crown. All specimens were sanded with 400-, 800-, and 1000-grit silicon carbide. Next, the specimens were divided into five subgroups (n = 10). The specimens in first group were sanded with 1200-, 1600-, and 2000-grit silicon carbide sandpaper. The second group was polished with an aluminum oxide-containing disc. The third group was polished with a diamond-containing pad. A glaze bond was applied to the specimens in the fourth group. The fifth group was glazed with a coat of nano-filled resin. Then, the surface roughness of all specimens was measured with a profilometer. A two-way ANOVA test was performed using SPSS 20.0. Finally, the microstructures of the surfaces were examined by a scanning electron microscope at 5000× magnification.\u0000Results: Statistically significant results were obtained between the temporary materials and polishing methods in terms of surface roughness (p < 0.05). For the polishing method, the highest surface roughness values were observed in the control group (0.50 ± 0.15). The lowest surface roughness values were observed in the Equia Forte GC coat group (0.25 ± 0.10). Among the temporary crown materials, the highest roughness was observed in Imicryl specimens. (0.45 ± 0.17), while the least roughness was the polymethyl-methacrylate (PMMA) specimens (0.17 ± 0.10).\u0000Conclusion: Surface polishing and finishing procedures might positively affect the surface roughness of temporary materials. Furthermore, materials made via computer-aided design and computer-aided manufacturing (CAD-CAM) demonstrate structural advantages and may be preferable.\u0000 \u0000How to cite this article: \u0000How to cite this article: Kavut İ, Uğur M, Tanrıkut ÖO. Effect of polishing methods on the surface roughness of different temporary restorative materials. Int Dent Res 2022;12(3):149-57. https://doi.org/10.5577/intdentres.2022.vol12.no3.7\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.\u0000 ","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75690316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of thickness and cement shade on the color match of different CAD-CAM glass-ceramic materials","authors":"Tuba Yılmaz Savaş","doi":"10.5577/intdentres.457","DOIUrl":"https://doi.org/10.5577/intdentres.457","url":null,"abstract":"Aim: This study aimed to assess the impact of the type and thickness of the ceramic and cement color on the targeted shade of glass-ceramics with various chemical compositions.\u0000Methodology: Thirty ceramic specimens were prepared from leucite-reinforced (GC Initial LRF, GC Group) and lithium-disilicate (IPS e.max CAD, EM Group) materials in three different thicknesses (0.5 mm, 0.7 mm, and 1 mm). Four 4-mm-thick substrates were then made from A3-shaded composite resin material to mimic tooth structure and be utilized for cement application. Four shades (Variolink II: transparent, white, yellow, and bleach) of 0.2-mm-thick resin cement were polymerized over these substrates. Next, the specimens were placed over these substrates, and color measurements were applied with a spectrophotometer (VITA Easyshade V) leading to 24 group combinations (n=5). The color difference (∆E) readings were obtained in the spectrophotometer's reference shade verification mode by selecting the A2 shade standard. Three-way mixed ANOVA, Tukey HSD, and Bonferroni tests were used for statistical analysis (α=0.05).\u0000Results: The main effects of material, cement, and thickness were found to be statistically significant (p < 0.05), as were the interactions of cement×material, cement×thickness, and material×thickness (p < 0.05). However, the material×cement×thickness interaction was not found to be statistically significant (p = 0.568). Regardless of thickness or cement shade, the GC group had a lower mean ∆E value than that of the EM group (p < 0.05). Lower ∆E values were achieved in both materials with a thickness of 1 mm and bleach-shaded cement (p < 0.05). The materials with the greatest mean ∆E values were those with the thickness of 0.5 mm and the transparent shade cement combination (p < 0.05).\u0000Conclusion: The thickness and shade of the cement used influenced the final color of the glass-ceramic materials with the same shade and translucency but diverse chemical compositions. When compared to the lithium disilicate glass-ceramic material, the leucite-reinforced feldspathic glass-ceramic material displayed lower color difference values and a better color match with the targeted shade.\u0000 \u0000How to cite this article: \u0000Yılmaz Savaş T. The effect of thickness and cement shade on the color match of different CAD-CAM glass-ceramic materials. Int Dent Res 2022;12(Suppl.1):108-13. https://doi.org/10.5577/intdentres.457\u0000 \u0000Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.\u0000 ","PeriodicalId":31322,"journal":{"name":"Journal of International Clinical Dental Research Organization","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79932852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}