Thesis (M.S.)--University of Michigan, Ann Arbor, 1978. / Typescript (photocopy). Includes bibliographical references (leaves 141-148). Also issued in print.

Thesis (M.S.)--University of Michigan, Ann Arbor, 1978. / Typescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 141-148).

Orientador: Andréa Abi Rached Dantas / Resumo: O objetivo do estudo foi avaliar a resistência flexural de materiais restauradores resinosos provisórios (Systemp Onlay, Bifix Temp, Provyl Master F, Fill Magic e Clip F) após a fotopolimerização com sistema de fotoativação LED-laser: Radii-Cal (SDI, São Paulo, SP, BR). A resistência flexural demonstrada pelos materiais restauradores provisórios Provi Master F (Wilcos), Systemp (Ivoclair) e Fill Magic (Coltene) foi similar (p >0,05) e maior que a demonstrada pelos materiais restauradores BiFix (Voco) e Clip F (Voco) (p < 0,05). Por outro lado, a resistência flexural apresentada pelo BiFix e Clip F foi semelhante entre si (p > 0.05). Concluimos assim que os materiais Provi Master F, Systemp e Fill Magic são materiais de melhor escolha quando necessitamos de uma resistência maior às forças oclusais. / Abstract: The objective of this study was to evaluate the flexural strength of temporary resin restorative materials (Systemp Onlay, Bifix Temp, Provyl Master F, Fill Magic e Clip F) after photopolymerization with LED-laser photoactivation system: : Radii-Cal (SDI, São Paulo, SP, BR). The flexural strength demonstrated by the provisional restorative materials Provi Master F (Wilcos), Systemp (Ivoclair) e Fill Magic (Coltene) was similar (p >0,05) and greater than that demonstrated by restorative materials BiFix (Voco) e Clip F (Voco) (p < 0,05). On the other hand, the flexural strength demonstrated by Be Fil and Clip F were similar among themselves (p > 0.05). We conclude that the materials Provi Master F, Systemp and Fill Magic are materials of better choice when we need a greater resistance to occlusal forces. / Mestre

Submitted by Carolina Ellen Spinola Machado (carolina.machado@unesp.br) on 2018-07-17T17:50:57Z No. of bitstreams: 1 Tese Mestrado Carol Spinola Correção Final.pdf: 1288993 bytes, checksum: 2bda3149606dd9c289679698a83d6cbc (MD5) / Approved for entry into archive by Ana Cristina Jorge null (anacris@fclar.unesp.br) on 2018-07-17T18:28:03Z (GMT) No. of bitstreams: 1 machado_ces_me_arafo_int.pdf: 1335157 bytes, checksum: c25b86d1526dd6b3333d99b75d0e04b1 (MD5) / Made available in DSpace on 2018-07-17T18:28:03Z (GMT). No. of bitstreams: 1 machado_ces_me_arafo_int.pdf: 1335157 bytes, checksum: c25b86d1526dd6b3333d99b75d0e04b1 (MD5) Previous issue date: 2018-05-17 / O objetivo do estudo foi avaliar a resistência flexural de materiais restauradores resinosos provisórios (Systemp Onlay, Bifix Temp, Provyl Master F, Fill Magic e Clip F) após a fotopolimerização com sistema de fotoativação LED-laser: Radii-Cal (SDI, São Paulo, SP, BR). A resistência flexural demonstrada pelos materiais restauradores provisórios Provi Master F (Wilcos), Systemp (Ivoclair) e Fill Magic (Coltene) foi similar (p >0,05) e maior que a demonstrada pelos materiais restauradores BiFix (Voco) e Clip F (Voco) (p < 0,05). Por outro lado, a resistência flexural apresentada pelo BiFix e Clip F foi semelhante entre si (p > 0.05). Concluimos assim que os materiais Provi Master F, Systemp e Fill Magic são materiais de melhor escolha quando necessitamos de uma resistência maior às forças oclusais. / The objective of this study was to evaluate the flexural strength of temporary resin restorative materials (Systemp Onlay, Bifix Temp, Provyl Master F, Fill Magic e Clip F) after photopolymerization with LED-laser photoactivation system: : Radii-Cal (SDI, São Paulo, SP, BR). The flexural strength demonstrated by the provisional restorative materials Provi Master F (Wilcos), Systemp (Ivoclair) e Fill Magic (Coltene) was similar (p >0,05) and greater than that demonstrated by restorative materials BiFix (Voco) e Clip F (Voco) (p < 0,05). On the other hand, the flexural strength demonstrated by Be Fil and Clip F were similar among themselves (p > 0.05). We conclude that the materials Provi Master F, Systemp and Fill Magic are materials of better choice when we need a greater resistance to occlusal forces.

Indiana University-Purdue University Indianapolis (IUPUI) / A provisional restoration must fulfill biologic, mechanical, and esthetic requirements. These prostheses should provide comfort, pulp protection, positional stability, occlusal function, hygiene access, esthetics, strength and retention. Methyl-methacrylate acrylic has assumed many appli¬cations in the field of restorative dentistry. However, the material still has deficiencies, such as polymerization shrinkage, pulpal damage associated with exothermic polymerization and susceptibility to fracture. Bis-GMA composites, Bis-acryl composites and visible light-cured urethane dimethacrylate resins have been developed to address these issues. The purpose of this study was to compare the mechanical properties of provisional restorations made from composite resins (Protemp Plus, Luxatemp Solar, Radica, Protemp Crown) to those made of the traditional methacrylate resins (Jet, Snap, High Impact). Six groups of samples, two groups from methacrylate and four groups from composite based materials, were fabricated. Samples from each group were evaluated for microhardness (n=10), flexural strength and flexural modulus (n=20) according to ISO 4049, and fracture toughness (n=20) according to ISO 13586. From each of the six groups, ten samples were tested for flexural strength, flexural modulus and fracture toughness and 5 samples were tested for microhardness. These tests were done after storing at 37°C in a distilled water solution for 7 days followed by thermal cycling (2500 cycles, 5-55°C, 45 s. dwell). Identical sets of samples from each group were used as controls; these were tested after storing for 24 hours in dry conditions. The results were analyzed by two-way ANOVA with material type and aging conditions as the two main variables. Significance level was set at p=0.05. For flexural strength and flexural modules, the higher values were obtained for Radica. Protemp plus (7 days) and Radica (24h) had the highest fracture toughness value. Protemp crown showed the highest surface hardness. The mechanical properties of composite resin were superior.