ABSTRACT Statement of problem protective and restorative dentistry's basic function is to protect the continuity and integrity of the tissues and to restore function, phonation, and esthetics lost due to any cause. The success of dental ceramics is affected by flexural strength, but little data are available on their clinical performance. Purpose: This study evaluated the flexural strength of the İn-Ceram Alumina, In-Ceram Zirconia, and Finesse press all-ceramic porcelain systems. The success of dental porcelains is partly related to their flexural strength. The values of flexural strength of three porcelain Systems were measured to include In-Ceram Alumina, In-Ceram Zirconia, and Finesse press all ceramic porcelain systems. Material and methods: The flexural strengths of the three porcelain systems were determined by employing the method ISO specification 6872. For the statistical evaluations of the flexure strength values, Kruskal Wallis and Mann-Whitney U tests were used. Results: When the flexural strengths of In-Ceram Alumina, In-Ceram Zirconia, and Finesse groups were compared, the differences were found to be statistically significant. Conclusion: The highest flexural strength was observed for In-Ceram Zirconia, followed by In-Ceram Alumina and Finesse porcelain system. Clinical implications: In this in vitro study, In-Ceram Alumina, In-Ceram Zirconia, and Finesse all-ceramic systems were compared concerning flexural strength. The differences between the groups are significant (p
{"title":"Evaluation of Flexural Strength of different all-ceramic porcelain systems","authors":"Akın Coşkun","doi":"10.7126/cumudj.1202436","DOIUrl":"https://doi.org/10.7126/cumudj.1202436","url":null,"abstract":"ABSTRACT \u0000Statement of problem protective and restorative dentistry's basic function is to protect the continuity and integrity of the tissues and to restore function, phonation, and esthetics lost due to any cause. The success of dental ceramics is affected by flexural strength, but little data are available on their clinical performance. \u0000Purpose: This study evaluated the flexural strength of the İn-Ceram Alumina, In-Ceram Zirconia, and Finesse press all-ceramic porcelain systems. The success of dental porcelains is partly related to their flexural strength. The values of flexural strength of three porcelain Systems were measured to include In-Ceram Alumina, In-Ceram Zirconia, and Finesse press all ceramic porcelain systems. \u0000Material and methods: The flexural strengths of the three porcelain systems were determined by employing the method ISO specification 6872. For the statistical evaluations of the flexure strength values, Kruskal Wallis and Mann-Whitney U tests were used. \u0000Results: When the flexural strengths of In-Ceram Alumina, In-Ceram Zirconia, and Finesse groups were compared, the differences were found to be statistically significant. \u0000 Conclusion: The highest flexural strength was observed for In-Ceram Zirconia, followed by In-Ceram Alumina and Finesse porcelain system. \u0000Clinical implications: In this in vitro study, In-Ceram Alumina, In-Ceram Zirconia, and Finesse all-ceramic systems were compared concerning flexural strength. The differences between the groups are significant (p","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46988409","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}
More often than not pulpless teeth remain relatively intact after conservative endodontic treatment. Although it hasn't been shown that endodontically treated teeth are more brittle than healthy ones, pulpless teeth are known to crack during mastication. As a result of this known phenomenon, dental professionals have been looking for strategies to prevent pulpless teeth from breaking. Restoration and reinforcement of pulpless teeth is a crucial preventative step in endodontic therapy. A post is cemented into the root canal to reinforce a healthy endodontically treated tooth. The post is supposed to reinforce the tooth and keep it from breaking. A widely used technique for repairing teeth that have undergone endodontic treatment is post and cores. Retention applied onto the root thorough final restoration using the post and core restoration as a substructure. Therefore, post placement in the root is crucial. In order to ensure retention for a fixed restoration, endodontically treated teeth are frequently treated with posts and cores. Teeth that had gone through endodontic treatment often suffer from severe coronal damage. In order to ensure retention for full or partial coverage restoration, these teeth may require a coronal substructure or core for retention of a full or partial bonding restoration. Generally, primary retention feature of a core is an intraradicular post. Posts and cores are routinely used for endodontical teeth restoration. This article provides a review presentation about utilization of post systems on the pulpless tooth.
{"title":"GENERAL CONSIDERATION OF POST SYSTEMS","authors":"Mustafa Kocacikli","doi":"10.7126/cumudj.1236585","DOIUrl":"https://doi.org/10.7126/cumudj.1236585","url":null,"abstract":"More often than not pulpless teeth remain relatively intact after conservative endodontic treatment. Although it hasn't been shown that endodontically treated teeth are more brittle than healthy ones, pulpless teeth are known to crack during mastication. As a result of this known phenomenon, dental professionals have been looking for strategies to prevent pulpless teeth from breaking. Restoration and reinforcement of pulpless teeth is a crucial preventative step in endodontic therapy. A post is cemented into the root canal to reinforce a healthy endodontically treated tooth. The post is supposed to reinforce the tooth and keep it from breaking. A widely used technique for repairing teeth that have undergone endodontic treatment is post and cores. \u0000Retention applied onto the root thorough final restoration using the post and core restoration as a substructure. Therefore, post placement in the root is crucial. In order to ensure retention for a fixed restoration, endodontically treated teeth are frequently treated with posts and cores. Teeth that had gone through endodontic treatment often suffer from severe coronal damage. In order to ensure retention for full or partial coverage restoration, these teeth may require a coronal substructure or core for retention of a full or partial bonding restoration. Generally, primary retention feature of a core is an intraradicular post. Posts and cores are routinely used for endodontical teeth restoration. This article provides a review presentation about utilization of post systems on the pulpless tooth.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44304870","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}
Objectives:To evaluate the effects of double-acting desensitized varnishes applied to bovine tooth enamel bleached with 40% hydrogen peroxide on enamel calcium and phosphorus content and color stability. Materials and Methods:The coronal part of 10 newly extracted bovine teeth (approximately 10x12mm in size) was divided into 5 regions for mineral exchange measurements. Color change measurements of 50 newly extracted bovine teeth were divided into 5 groups. Group 1 unbleached (negative control group), Group 2 was bleached with 40%HP (positive control group), Groups 3,4 and 5 were treated MI varnish, Clinpro White and Profluoroid varnish after bleaching, respectively. Then, all groups were exposed to the tea solution and enamel color measurements were made using the CIE Lab method with spectrophotometer. Mineral change measurements were determined by EDS and morphological changes were observed using SEM. One-way ANOVA, Tukey HSD tests and Tamhane's tests were used for statistical analysis. Results:The content of calcium and phosphorus in enamel were like No bleachingMI varnishClinpro WhiteProfluoroidBleaching. The most color stability after bleaching was determined in teeth which were applied MI varnish applied group ((P< .05). The color stability of Profluoroid and Clinpro White applied group were similar (P> .05). There was a statistically significant difference between the groups in terms of △L and △b averages (P< .05). Conclusions:MI, Clinpro White and Profluoroid varnish used after bleaching were effective in preventing mineral loss from tooth enamel and reducing the susceptibility of tooth enamel to staining with tea.
{"title":"Evaluation of color stability and remineralization capacity of dual effect desensitizing agents on bleached enamel with hydrogen peroxide","authors":"H. Altınışık, Cemile Kedici Alp","doi":"10.7126/cumudj.1228789","DOIUrl":"https://doi.org/10.7126/cumudj.1228789","url":null,"abstract":"Objectives:To evaluate the effects of double-acting desensitized varnishes applied to bovine tooth enamel bleached with 40% hydrogen peroxide on enamel calcium and phosphorus content and color stability. \u0000Materials and Methods:The coronal part of 10 newly extracted bovine teeth (approximately 10x12mm in size) was divided into 5 regions for mineral exchange measurements. Color change measurements of 50 newly extracted bovine teeth were divided into 5 groups. Group 1 unbleached (negative control group), Group 2 was bleached with 40%HP (positive control group), Groups 3,4 and 5 were treated MI varnish, Clinpro White and Profluoroid varnish after bleaching, respectively. Then, all groups were exposed to the tea solution and enamel color measurements were made using the CIE Lab method with spectrophotometer. Mineral change measurements were determined by EDS and morphological changes were observed using SEM. One-way ANOVA, Tukey HSD tests and Tamhane's tests were used for statistical analysis. \u0000Results:The content of calcium and phosphorus in enamel were like No bleachingMI varnishClinpro WhiteProfluoroidBleaching. The most color stability after bleaching was determined in teeth which were applied MI varnish applied group ((P< .05). The color stability of Profluoroid and Clinpro White applied group were similar (P> .05). There was a statistically significant difference between the groups in terms of △L and △b averages (P< .05). \u0000Conclusions:MI, Clinpro White and Profluoroid varnish used after bleaching were effective in preventing mineral loss from tooth enamel and reducing the susceptibility of tooth enamel to staining with tea.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43514255","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}
Today, the use of micro-computed tomography is becoming widespread in almost every field of dental research. When the national review articles on micro-computed tomography are examined, it is seen that the focus is on endodontic and surgical dental applications. As prosthodontists, our article, which was compiled in order to deepen the specific usage areas of micro-computed tomography applications and to review the studies done in this area, provides information about the use of micro-computed tomography method in prosthetic dentistry. Micro-computed tomography is a powerful in vitro research method. Micro-computed tomography was used; marginal and internal compatibility of restorations, cement spacing of restorations, adaptation of denture bases, accuracy of prosthetic measurements, effects of occlusal irregularities, volumetric changes in teeth due to dental post application, biomechanical evaluation of implant-abutment connection, and compatibility of maxillofacial prostheses.
{"title":"Use of Micro Computed Tomography in Prosthetic Dentistry","authors":"Kübra TOKAY KIZILIRMAK, E. Tamam","doi":"10.7126/cumudj.1241456","DOIUrl":"https://doi.org/10.7126/cumudj.1241456","url":null,"abstract":"Today, the use of micro-computed tomography is becoming widespread in almost every field of dental research. When the national review articles on micro-computed tomography are examined, it is seen that the focus is on endodontic and surgical dental applications. As prosthodontists, our article, which was compiled in order to deepen the specific usage areas of micro-computed tomography applications and to review the studies done in this area, provides information about the use of micro-computed tomography method in prosthetic dentistry. Micro-computed tomography is a powerful in vitro research method. Micro-computed tomography was used; marginal and internal compatibility of restorations, cement spacing of restorations, adaptation of denture bases, accuracy of prosthetic measurements, effects of occlusal irregularities, volumetric changes in teeth due to dental post application, biomechanical evaluation of implant-abutment connection, and compatibility of maxillofacial prostheses.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48238207","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}
Dental bleaching is one of the preferred treatments by patients to improve facial attractiveness. It is a relatively simple and conservative technique that makes possible to change dental colour by removing discolorations. Four different patients applied to our Faculty for whitening treatment at different times. In clinical examinations, we detected extrinsic discoloration of the teeth. For this reason, we decided to apply office bleaching treatment (Opalescence BOOST, Ultradent Products INC., USA). First of all, measures were taken to protect the lips, gums and oral mucosa. Gums were covered with gingival barrier (OpalDam Green, Ultradent Products INC., USA). Isolation was provided with cotton pellets. 40% Hydrogen Peroxide was applied to the maxillary and mandibular teeth inculuding between the second premolars. After 20 minutes of application, hydrogen peroxide was carefully removed with water and cotton pellets have been replaced. After that, a second 20 minutes application was made with the whitening agent. When the application period was over, it was removed with water and the gingival barrier has been removed. Patients were advised to stay away from products containing coloring dark colors such as cigarettes, tea, coffee, chocolate, red wine, cherries, tomato paste for two weeks. At the controls two weeks later, it was seen that the aesthetic expectation of the patients was met.
{"title":"VITAL TEETH BLEACHING TREATMENTS WITH IN-OFFICE BLEACHING: THE CASE REPORTS","authors":"Gürkan Gür, Gürçağ Gür, Sevkan Özkan, Cagatay Cakar","doi":"10.7126/cumudj.1213031","DOIUrl":"https://doi.org/10.7126/cumudj.1213031","url":null,"abstract":"Dental bleaching is one of the preferred treatments by patients to improve facial attractiveness. It is a relatively simple and conservative technique that makes possible to change dental colour by removing discolorations. Four different patients applied to our Faculty for whitening treatment at different times. In clinical examinations, we detected extrinsic discoloration of the teeth. For this reason, we decided to apply office bleaching treatment (Opalescence BOOST, Ultradent Products INC., USA). First of all, measures were taken to protect the lips, gums and oral mucosa. Gums were covered with gingival barrier (OpalDam Green, Ultradent Products INC., USA). Isolation was provided with cotton pellets. 40% Hydrogen Peroxide was applied to the maxillary and mandibular teeth inculuding between the second premolars. After 20 minutes of application, hydrogen peroxide was carefully removed with water and cotton pellets have been replaced. After that, a second 20 minutes application was made with the whitening agent. When the application period was over, it was removed with water and the gingival barrier has been removed. Patients were advised to stay away from products containing coloring dark colors such as cigarettes, tea, coffee, chocolate, red wine, cherries, tomato paste for two weeks. At the controls two weeks later, it was seen that the aesthetic expectation of the patients was met.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47546393","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}
Recently a visually pleasing smile has become a major concern for the patients; therefore, dental bleaching has gained importance due to its safety and great aesthetic results. A female patient presented with intrinsic discolorated maxillary central incisors after endodontic therapy. Maxillary central incisors were isolated with rubber dam and 2mm of the gutta-percha was removed in an apical direction beyond the cemento-enamel junction. Glass ionomer cement was used a barrier material. Mixture of hydrogen peroxide and sodium perborate placed in the pulp chamber and the teeth were temporarily restored with zinc phosphate cement. Following the treatment, a satisfactory aesthetic result was achieved. In this case, using the walking bleach technique was found to be successful in whitening discolared teeth after endodontic therapy. This method can be recommended as a safe alternative for treating with discolored devitalized teeth.
{"title":"NON-VITAL DISCOLARED TEETH BLEACHING USING THE WALKING BLEACH TECHNIQUE :A CASE REPORT","authors":"Gürçağ Gür","doi":"10.7126/cumudj.1213192","DOIUrl":"https://doi.org/10.7126/cumudj.1213192","url":null,"abstract":"Recently a visually pleasing smile has become a major concern for the patients; therefore, dental bleaching has gained importance due to its safety and great aesthetic results. A female patient presented with intrinsic discolorated maxillary central incisors after endodontic therapy. Maxillary central incisors were isolated with rubber dam and 2mm of the gutta-percha was removed in an apical direction beyond the cemento-enamel junction. Glass ionomer cement was used a barrier material. Mixture of hydrogen peroxide and sodium perborate placed in the pulp chamber and the teeth were temporarily restored with zinc phosphate cement. Following the treatment, a satisfactory aesthetic result was achieved. In this case, using the walking bleach technique was found to be successful in whitening discolared teeth after endodontic therapy. This method can be recommended as a safe alternative for treating with discolored devitalized teeth.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44658303","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}
Tuğçe Koyu, Akın Coşkun, G. Yesilyurt, M. Ulgey, O. Gorler
Purpose: The purpose of this in vitro study was to evaluate the effect of plastic impression transfer copings on the dimensional accuracy of close tray implant impressions. Methods: A master model was constructed using autopolymerizing acrylic resin. Five parallel holes were drilled for implant analogs. Custom impression trays were made with autopolymerizing polymethyl methacrylate resin. The study consisted of 2 groups (n=5): (group 1) Impression was obtained with using plastic impression transfer coping (group 2) Impression was obtained without using plastic impression transfer coping. Vinylpolysiloxane impression material was used for both groups. After the impression were obtained, casts were made by type IV dental stone. Casts were scanned with the lab-type scanner and transferred to the measurement program. Measurements were made from a specific reference corner for each analog to ensure standardization. Data were saved as millimeters and pairwise comparisons were made with Welch's t-test analysis. Results: The effect of plastic caps was evaluated by applying the t-test to each distance. For all distances, the distortion seen in the measurements taken without the cap is higher than the measurements taken with the cap, but no significant differences were found (p>0.05). Conclusions: In the anterior-posterior distances, the distortions were found compression type, in the right-left distances the distortions were found as expansion-type. There is a dimensional change in the measurements taken without a cap, but no clinically significant differences were found.
{"title":"Effect of Plastic impression transfer copings on the dimensional accuracy of implant impressions","authors":"Tuğçe Koyu, Akın Coşkun, G. Yesilyurt, M. Ulgey, O. Gorler","doi":"10.7126/cumudj.1213288","DOIUrl":"https://doi.org/10.7126/cumudj.1213288","url":null,"abstract":"Purpose: The purpose of this in vitro study was to evaluate the effect of plastic impression transfer copings on the dimensional accuracy of close tray implant impressions. \u0000Methods: A master model was constructed using autopolymerizing acrylic resin. Five parallel holes were drilled for implant analogs. Custom impression trays were made with autopolymerizing polymethyl methacrylate resin. The study consisted of 2 groups (n=5): (group 1) Impression was obtained with using plastic impression transfer coping (group 2) Impression was obtained without using plastic impression transfer coping. Vinylpolysiloxane impression material was used for both groups. After the impression were obtained, casts were made by type IV dental stone. Casts were scanned with the lab-type scanner and transferred to the measurement program. Measurements were made from a specific reference corner for each analog to ensure standardization. Data were saved as millimeters and pairwise comparisons were made with Welch's t-test analysis. \u0000Results: The effect of plastic caps was evaluated by applying the t-test to each distance. For all distances, the distortion seen in the measurements taken without the cap is higher than the measurements taken with the cap, but no significant differences were found (p>0.05). \u0000Conclusions: In the anterior-posterior distances, the distortions were found compression type, in the right-left distances the distortions were found as expansion-type. There is a dimensional change in the measurements taken without a cap, but no clinically significant differences were found.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43789061","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}
A. T. ERTÜRK AVUNDUK, Hande Fi̇li̇z, Esra CENGİZ YANARDAĞ
Objectives: To determine the influence of dental students' dietary habits on tooth color. Materials and Methods: The ethical committee of Mersin University granted permission to conduct the study (number 2022/708). The consent form was approved by all participants. The following exclusion criteria were used for the selection of participants: gingival problems, the presence of excessive abrasion, dental malocclusion, a history of orthodontic or bleaching treatment, caries, and composite fillings on the facial surfaces of the teeth. A questionnaire consisting of 18 questions was directed to 202 students included in the study. The color of the upper central incisors and canines of the participants who completed the questionnaire was measured using a clinical spectrophotometer device(Vita Easyshade V). Tooth color assessment was performed by a calibrated operator. The L*, C*, H*, a*, and b* parameters were recorded. Data were subjected to descriptive statistical analysis, Spearman's rho correlation analysis and multivariate testing. Results: The sample consisted of 202 dentistry students. 96.5% of the participants were between the ages of 18-25 and more than half were female. L*, C*, H*, a*, and b* mean values in canine and incisor teeth did not differ statistically significantly according to age groups(p>0.05). The mean values of C* and b* in canine teeth and the mean values of all parameters except L* in incisor teeth showed significant differences according to gender(p
{"title":"Influence of dental students' dietary habits on tooth color","authors":"A. T. ERTÜRK AVUNDUK, Hande Fi̇li̇z, Esra CENGİZ YANARDAĞ","doi":"10.7126/cumudj.1228295","DOIUrl":"https://doi.org/10.7126/cumudj.1228295","url":null,"abstract":"Objectives: To determine the influence of dental students' dietary habits on tooth color. \u0000Materials and Methods: The ethical committee of Mersin University granted permission to conduct the study (number 2022/708). The consent form was approved by all participants. The following exclusion criteria were used for the selection of participants: gingival problems, the presence of excessive abrasion, dental malocclusion, a history of orthodontic or bleaching treatment, caries, and composite fillings on the facial surfaces of the teeth. A questionnaire consisting of 18 questions was directed to 202 students included in the study. The color of the upper central incisors and canines of the participants who completed the questionnaire was measured using a clinical spectrophotometer device(Vita Easyshade V). Tooth color assessment was performed by a calibrated operator. The L*, C*, H*, a*, and b* parameters were recorded. Data were subjected to descriptive statistical analysis, Spearman's rho correlation analysis and multivariate testing. \u0000Results: The sample consisted of 202 dentistry students. 96.5% of the participants were between the ages of 18-25 and more than half were female. L*, C*, H*, a*, and b* mean values in canine and incisor teeth did not differ statistically significantly according to age groups(p>0.05). The mean values of C* and b* in canine teeth and the mean values of all parameters except L* in incisor teeth showed significant differences according to gender(p","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49595889","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}
OBJECTIVES: This study investigated the mechanical properties of laminate veneers to determine their resistance to the shear force of three different types of cement used in the restorations. MATERIAL and METHODS: Laminate veneers were prepared using the standard tooth preparation methods for 30 extracted maxillary central incisors. To standardize the depth, guide burs were used to prepare a depth of 0.5 mm from the buccal angle. The samples were allocated into three randomized groups (n = 10): Group A (resin using the total etch method and Variolink Esthetic DC resin cement; Group B (resin using the PANAVIA F2.0 self-etch method; and Group C (self-adhesion bonded with Rely X U200 resin cement). The prepared specimens were stored in distilled water for one week before a shear test was used to determine the resistance of the veneers to the bonding. The obtained data were evaluated statistically. RESULTS: The values of the shear bond strength were statistically significant depending on the type of resin cement that was applied (p ˂ 0.05). The specimens that were cemented using the total-etch method (18.79±4.48 MPa) had the lowest shear force value. The obtained data were evaluated statistically by Tukey multiple comparison test (p > 0.05). CONCLUSIONS: The cement is a highly effective factor in the bonding between fixed prosthetic restorations and the abutment tooth, and the cement used must have sufficient resistance to shear forces.
{"title":"Examination of the Shear Force Resistance of Laminate Veneers Adhered with Different Resin Cements","authors":"Zeynep Yeşil Duymuş, Emel Arslan","doi":"10.7126/cumudj.1187835","DOIUrl":"https://doi.org/10.7126/cumudj.1187835","url":null,"abstract":"OBJECTIVES: This study investigated the mechanical properties of laminate veneers to determine their resistance to the shear force of three different types of cement used in the restorations. \u0000MATERIAL and METHODS: Laminate veneers were prepared using the standard tooth preparation methods for 30 extracted maxillary central incisors. To standardize the depth, guide burs were used to prepare a depth of 0.5 mm from the buccal angle. The samples were allocated into three randomized groups (n = 10): Group A (resin using the total etch method and Variolink Esthetic DC resin cement; Group B (resin using the PANAVIA F2.0 self-etch method; and Group C (self-adhesion bonded with Rely X U200 resin cement). The prepared specimens were stored in distilled water for one week before a shear test was used to determine the resistance of the veneers to the bonding. The obtained data were evaluated statistically. \u0000RESULTS: The values of the shear bond strength were statistically significant depending on the type of resin cement that was applied (p ˂ 0.05). The specimens that were cemented using the total-etch method (18.79±4.48 MPa) had the lowest shear force value. The obtained data were evaluated statistically by Tukey multiple comparison test (p > 0.05). \u0000CONCLUSIONS: The cement is a highly effective factor in the bonding between fixed prosthetic restorations and the abutment tooth, and the cement used must have sufficient resistance to shear forces.","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43362065","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}
Aim: In this study, it was aimed to synthesize a new dyestuff with fluorescent active properties, which can be easily produced and water-soluble, to be used in sealing tests. Materials and Methods: The sealing capacities of the implant abutment connection of the dental implant systems manufactured by ESTAŞ were determined spectroscopically by UV-Vis spectrophotometer using the synthesized dyestuff in the first stage. Thanks to the fluorescent active property of the dyestuff, the emission spectra were measured with the fluorescent spectrometer, which is highly sensitive to changes, and the sealing capacities could be determined more precisely, depending on time. In addition, the gap between the implant and the abutment connection was determined using a Scanning Electron Microscope (SEM), and the sealing capacities were evaluated from a different perspective. In addition, sealing tests of the same implant systems were also performed with methylene blue dyestuff and the results were compared. The efficiency of our synthesized dyestuff was determined. Results: The dyestuff to be used in the sealing tests of the implants was synthesized and characterized in a short time in our laboratory. The phthalocyanine compound from the porphyrin class was obtained as a result of the tetramerization reaction of the synthesized phthalonitrile derivative. The dyestuff, which can be synthesized in a short time like 10 minutes, was purified by taking advantage of the solubility difference and chromatographic methods. The obtained dyestuff was characterized by NMR, FTIR, UV-Vis, and MALDI-TOF MS. The results obtained are in harmony with the structure of the molecule. The dyestuff produced is water soluble and was especially used to determine the sealing capacity of the implant abutment connection of dental implant systems produced by ESTAŞ. The sealing properties of the implant were determined by spectroscopic methods such as UV-Vis and fluorescence. In addition, sealing capacities were evaluated with SEM. According to the results obtained, we can say that the synthesized dyestuff is a dye that can give spectroscopically more sensitive results than methylene blue. Conclusions: Dental implants, which are artificially placed in the mouth to support dental prostheses, have changed dental treatment methods to a large extent and become the most preferred successful technique. However, infection risks may occur during the treatment due to the formation of a gap between the abutment cap and the implant resulting from both the production and adaptation of the abutment cap, which is a part of the implant. For this reason, it is important that the implants produced are routinely sensitively checked for sealing and put into use. In addition, sealing control will contribute to the control and shaping of the process from the manufacturing stage of the implant. In line with all the data obtained, it has been determined that the implant types produced by ESTAŞ have a sealing
{"title":"New Dyestuff Production to Sensitively Determine the Sealing Capacity of the Implant Abutment Connection","authors":"E. Yabaş, M. Simsir, M. Çetin, F. Özaydın","doi":"10.7126/cumudj.1203684","DOIUrl":"https://doi.org/10.7126/cumudj.1203684","url":null,"abstract":"Aim: In this study, it was aimed to synthesize a new dyestuff with fluorescent active properties, which can be easily produced and water-soluble, to be used in sealing tests. \u0000Materials and Methods: \u0000The sealing capacities of the implant abutment connection of the dental implant systems manufactured by ESTAŞ were determined spectroscopically by UV-Vis spectrophotometer using the synthesized dyestuff in the first stage. Thanks to the fluorescent active property of the dyestuff, the emission spectra were measured with the fluorescent spectrometer, which is highly sensitive to changes, and the sealing capacities could be determined more precisely, depending on time. In addition, the gap between the implant and the abutment connection was determined using a Scanning Electron Microscope (SEM), and the sealing capacities were evaluated from a different perspective. In addition, sealing tests of the same implant systems were also performed with methylene blue dyestuff and the results were compared. The efficiency of our synthesized dyestuff was determined. \u0000Results: \u0000The dyestuff to be used in the sealing tests of the implants was synthesized and characterized in a short time in our laboratory. The phthalocyanine compound from the porphyrin class was obtained as a result of the tetramerization reaction of the synthesized phthalonitrile derivative. The dyestuff, which can be synthesized in a short time like 10 minutes, was purified by taking advantage of the solubility difference and chromatographic methods. The obtained dyestuff was characterized by NMR, FTIR, UV-Vis, and MALDI-TOF MS. The results obtained are in harmony with the structure of the molecule. The dyestuff produced is water soluble and was especially used to determine the sealing capacity of the implant abutment connection of dental implant systems produced by ESTAŞ. The sealing properties of the implant were determined by spectroscopic methods such as UV-Vis and fluorescence. In addition, sealing capacities were evaluated with SEM. According to the results obtained, we can say that the synthesized dyestuff is a dye that can give spectroscopically more sensitive results than methylene blue. \u0000Conclusions: \u0000Dental implants, which are artificially placed in the mouth to support dental prostheses, have changed dental treatment methods to a large extent and become the most preferred successful technique. However, infection risks may occur during the treatment due to the formation of a gap between the abutment cap and the implant resulting from both the production and adaptation of the abutment cap, which is a part of the implant. For this reason, it is important that the implants produced are routinely sensitively checked for sealing and put into use. In addition, sealing control will contribute to the control and shaping of the process from the manufacturing stage of the implant. \u0000In line with all the data obtained, it has been determined that the implant types produced by ESTAŞ have a sealing ","PeriodicalId":10781,"journal":{"name":"Cumhuriyet Dental Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49463400","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}
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