Leidiani Rossi Lucas, R. S. Navarro, Andréia de Oliveira, S. Suzuki, A. Garcez
{"title":"UV-C light as an alternative for disinfecting orthodontic pliers","authors":"Leidiani Rossi Lucas, R. S. Navarro, Andréia de Oliveira, S. Suzuki, A. Garcez","doi":"10.4322/bds.2023.e3738","DOIUrl":"https://doi.org/10.4322/bds.2023.e3738","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73424152","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":"Clinical study of different composite resin systems in Class I cavities (an 18-month randomized clinical trial)","authors":"Hend Ali Ibrahim, A. Abdalla, H. El-Sayed","doi":"10.4322/bds.2023.e3737","DOIUrl":"https://doi.org/10.4322/bds.2023.e3737","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73093197","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}
Igor Domingos dos Anjos, Vinícius Otávio Nogueira, Martinelle Ferreira da Rocha Taranto, L. A. Ramazzotto, P. Nelson-Filho, E. Küchler, Maria Angélica Hueb Menezes-Oliveira, C. Lepri, F. Baratto-Filho, I. Madalena
{"title":"Estrogen deficiency influences TNF-± and IL-1² gene expression in the odontogenic region of dental hypofunctional condition","authors":"Igor Domingos dos Anjos, Vinícius Otávio Nogueira, Martinelle Ferreira da Rocha Taranto, L. A. Ramazzotto, P. Nelson-Filho, E. Küchler, Maria Angélica Hueb Menezes-Oliveira, C. Lepri, F. Baratto-Filho, I. Madalena","doi":"10.4322/bds.2023.e3790","DOIUrl":"https://doi.org/10.4322/bds.2023.e3790","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77278546","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}
H. Bilir, Suzan Eda Eyyupoglu, Enes Karaman, M. Özcan, N. Lukic
{"title":"Effect of laboratory and chairside polishing methods on the surface topography of occlusal splint materials manufactured using conventional, subtractive and additive digital technologies","authors":"H. Bilir, Suzan Eda Eyyupoglu, Enes Karaman, M. Özcan, N. Lukic","doi":"10.4322/bds.2023.e3873","DOIUrl":"https://doi.org/10.4322/bds.2023.e3873","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76303595","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}
Rodrigo Hideki Yoshiyasu, C. A. Cartelli, Camila Pereira Vianna, Waleska Caldas, S. Bernardes, L. Trojan, Rubens Moreno de Freitas
{"title":"Peri-implant bone level assessment of early loaded dental implants submitted to different prosthetic protocols: a case report","authors":"Rodrigo Hideki Yoshiyasu, C. A. Cartelli, Camila Pereira Vianna, Waleska Caldas, S. Bernardes, L. Trojan, Rubens Moreno de Freitas","doi":"10.4322/bds.2023.e3569","DOIUrl":"https://doi.org/10.4322/bds.2023.e3569","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88723855","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}
K. Fardim, Thais Mara Aparecida Monfredini Ribeiro, E. Araújo, C. M. Ogawa, A. Costa, S. Lopes
{"title":"Magnetic resonance imaging texture analysis of the temporomandibular joint for changes in the articular disc in individuals with migraine headache","authors":"K. Fardim, Thais Mara Aparecida Monfredini Ribeiro, E. Araújo, C. M. Ogawa, A. Costa, S. Lopes","doi":"10.4322/bds.2023.e3649","DOIUrl":"https://doi.org/10.4322/bds.2023.e3649","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88184298","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}
Paulo Roberto Vieira MARTINS, Marcio Katsuyoshi MUKAI, Bruno COSTA, Carolina Mayumi IEGAMI, Roberto Chaib STEGUN
Objective: Teeth play a crucial role in masticatory efficiency and esthetic harmony making rehabilitation of partially edentulous patients a challenge because of the limitations of conventional removable partial dentures. As a therapeutic alternative, thermoplastic polymers are used in current dental practice either for practical processing purposes or aesthetics. However, it is recognized that the bond between acrylic resin artificial teeth and thermoplastic polymers has no chemical interaction, and depends on retentive features added to the teeth. This study analyzed the efficacy of two retentive forms of features through compressive strength test and as a secondary outcome, fracture and displacement resistance test. Material and Methods: Three groups of samples each with 14 sets of acrylic teeth were compared when two retentive features, single hole and groove retention, and a control group with teeth without any specific form. The experimental unit consisted of six maxillary anterior teeth, positioned in a linear pattern into a polypropylene block, where each tooth was submitted to a static load until its removal, on a universal testing machine. Results: Those specimens with a groove retention presented larger resistance to displacement when compared to the other groups (p <0.05). This was emphasized by the fracture of the tooth tested, with part of the cervical portion remaining embed in the base, and not its displacement as with (or without) the retentive feature. Conclusion: In this study, the type of retention influenced significantly to a better retention considering teeth and thermoplastic polymer base. The data in this study indicates that a groove placed on the artificial tooth offers significantly better retention efficacy to the point where the displacement was only possible after its fracture. KEYWORDS Artificial teeth; Acrylic resins; Denture base; Polypropylene; Retention.
{"title":"The influence of the retention feature in artificial teeth on its attachment to the thermoplastic resin denture base","authors":"Paulo Roberto Vieira MARTINS, Marcio Katsuyoshi MUKAI, Bruno COSTA, Carolina Mayumi IEGAMI, Roberto Chaib STEGUN","doi":"10.4322/bds.2023.e3770","DOIUrl":"https://doi.org/10.4322/bds.2023.e3770","url":null,"abstract":"Objective: Teeth play a crucial role in masticatory efficiency and esthetic harmony making rehabilitation of partially edentulous patients a challenge because of the limitations of conventional removable partial dentures. As a therapeutic alternative, thermoplastic polymers are used in current dental practice either for practical processing purposes or aesthetics. However, it is recognized that the bond between acrylic resin artificial teeth and thermoplastic polymers has no chemical interaction, and depends on retentive features added to the teeth. This study analyzed the efficacy of two retentive forms of features through compressive strength test and as a secondary outcome, fracture and displacement resistance test. Material and Methods: Three groups of samples each with 14 sets of acrylic teeth were compared when two retentive features, single hole and groove retention, and a control group with teeth without any specific form. The experimental unit consisted of six maxillary anterior teeth, positioned in a linear pattern into a polypropylene block, where each tooth was submitted to a static load until its removal, on a universal testing machine. Results: Those specimens with a groove retention presented larger resistance to displacement when compared to the other groups (p <0.05). This was emphasized by the fracture of the tooth tested, with part of the cervical portion remaining embed in the base, and not its displacement as with (or without) the retentive feature. Conclusion: In this study, the type of retention influenced significantly to a better retention considering teeth and thermoplastic polymer base. The data in this study indicates that a groove placed on the artificial tooth offers significantly better retention efficacy to the point where the displacement was only possible after its fracture. KEYWORDS Artificial teeth; Acrylic resins; Denture base; Polypropylene; Retention.","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135555973","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}
Leonardo Custódio de LIMA, Jean Soares MIRANDA, Ronaldo Luis Almeida de CARVALHO, Aline Serrado de Pinho BARCELLOS, Marina AMARAL, Estevão Tomomitsu KIMPARA
Objective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin - E and metal - M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (a=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging. KEYWORDS Aging; Cementation; Ceramics; Flexural strength; Lithium disilicate.
目的:评价双固化树脂水泥(Rc)和磷酸锌水泥(Zc)在不同基材(环氧树脂- E和金属- M)上未老化、热老化(TC)和热机械老化(TC/MC)的二硅酸锂(L)的双轴抗折强度(BFS)。材料与方法:制作L、E、M椎间盘，按照ERc (L+E+Rc)组进行粘接;MRc (L + M + Rc);MZc (L + M +佐);EZc (L + E +佐)。每组10个样品在BFS中进行测试，另外10个样品进行TC (1×104在5ºC和55ºC之间循环)，最后10个样品进行TC/MC (MC: 1.2×106循环，50 N, 3.8 Hz)。进行BFS试验，并通过扫描电子显微镜(SEM)评估其失效模式。通过单因素方差分析和Tukey事后检验(a=0.05)，比较每种老化方法中胶结策略(水泥/基质)的效果，并评估每种胶结策略中老化方法的效果。结果:在老化和添加剂作用下，其强度值最高，为M (237.8 ~ 463.9 MPa)，高于E (41.03 ~ 66.76 MPa)。Zc胶结组的抗折强度数据在TC和TC/MC后下降，而Rc胶结组的抗折强度数据稳定。扫描电镜分析表明，破坏源位于l的拉伸表面。结论:二硅酸锂胶结在金属基体上的圆盘具有最高的双轴抗折强度。用双固化树脂水泥胶结后，老化后BFS没有降低。关键词老化;胶结;陶瓷;挠曲强度;锂二矽酸盐。
{"title":"Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate","authors":"Leonardo Custódio de LIMA, Jean Soares MIRANDA, Ronaldo Luis Almeida de CARVALHO, Aline Serrado de Pinho BARCELLOS, Marina AMARAL, Estevão Tomomitsu KIMPARA","doi":"10.4322/bds.2023.e3923","DOIUrl":"https://doi.org/10.4322/bds.2023.e3923","url":null,"abstract":"Objective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin - E and metal - M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (a=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging. KEYWORDS Aging; Cementation; Ceramics; Flexural strength; Lithium disilicate.","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135784777","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}
Sandra Silva MARQUES, Taís Maria Cardoso de Oliveira, Gabriela Ribeiro ZUCCO, Fernando SABBAG, Herculano da Silva MARTINHO, Janete Dias ALMEIDA, Marcelo Ribeiro de ARAÚJO
{"title":"Unlocking the secrets of saliva: the promising potential of salivary biomarkers for evaluating crack use","authors":"Sandra Silva MARQUES, Taís Maria Cardoso de Oliveira, Gabriela Ribeiro ZUCCO, Fernando SABBAG, Herculano da Silva MARTINHO, Janete Dias ALMEIDA, Marcelo Ribeiro de ARAÚJO","doi":"10.4322/bds.2023.e3892","DOIUrl":"https://doi.org/10.4322/bds.2023.e3892","url":null,"abstract":"","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135913499","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}
Mateus Favero Barra Grande, G. Lopes, M. Teixeira, A. Pelegrine, J. Matos, R. S. Nishioka
The maxillary bone restriction can limit the implants position to support a full-arch prosthesis. Objective: Therefore, this study evaluated the biomechanical behavior of a full-arch prosthesis supported by six implants in different configurations: group A (implants inserted in the region of canines, first premolars and second molars), group B (implants inserted in the region of first premolar, first molar and second molar) and group C (implants in second premolar, first premolar and second molar). Material and Methods: The models were analyzed by the finite element method validated by strain gauge. Three types of loads were applied: in the central incisors, first premolars and second molars, obtaining results of von-Mises stress peaks and microstrain. All registered results reported higher stress concentration in the prosthesis of all groups, with group C presenting higher values in all structures when compared to A and B groups. The highest mean microstrain was also observed in group C (288.8 ± 225.2 μ ε/ μ ε ), however, there was no statistically significant difference between the evaluated groups. In both groups, regardless of the magnitude and direction of the load, the maximum von-Mises stresses recorded for implants and prosthesis displacements were lower in group A. Conclusion: It was concluded that an equidistant distribution of implants favors biomechanical behavior of full-arch prostheses supported by implants; and the placement of posterior implants seems to be a viable alternative to rehabilitate totally edentulous individuals.
{"title":"Mechanical behavior of implant-supported full-arch prostheses in different\u0000 locations in the maxilla: 3D-FEA and strain gauge analysis","authors":"Mateus Favero Barra Grande, G. Lopes, M. Teixeira, A. Pelegrine, J. Matos, R. S. Nishioka","doi":"10.4322/bds.2023.e3771","DOIUrl":"https://doi.org/10.4322/bds.2023.e3771","url":null,"abstract":"The maxillary bone restriction can limit the implants position to support a full-arch prosthesis. Objective: Therefore, this study evaluated the biomechanical behavior of a full-arch prosthesis supported by six implants in different configurations: group A (implants inserted in the region of canines, first premolars and second molars), group B (implants inserted in the region of first premolar, first molar and second molar) and group C (implants in second premolar, first premolar and second molar). Material and Methods: The models were analyzed by the finite element method validated by strain gauge. Three types of loads were applied: in the central incisors, first premolars and second molars, obtaining results of von-Mises stress peaks and microstrain. All registered results reported higher stress concentration in the prosthesis of all groups, with group C presenting higher values in all structures when compared to A and B groups. The highest mean microstrain was also observed in group C (288.8 ± 225.2 μ ε/ μ ε ), however, there was no statistically significant difference between the evaluated groups. In both groups, regardless of the magnitude and direction of the load, the maximum von-Mises stresses recorded for implants and prosthesis displacements were lower in group A. Conclusion: It was concluded that an equidistant distribution of implants favors biomechanical behavior of full-arch prostheses supported by implants; and the placement of posterior implants seems to be a viable alternative to rehabilitate totally edentulous individuals.","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77912182","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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