Marina Galoza - Academia.edu (original) (raw)

Papers by Marina Galoza

The purpose of this study was to evaluate the effect of the hydrogen peroxide and the carmine red... more The purpose of this study was to evaluate the effect of the hydrogen peroxide and the carmine red pigment (CR) at 3:1 and 1:1 ratio, on the fracture resistance and dentin microhardness of bovine teeth submitted to tooth bleaching. Forty endodontically treated incisors were subjected to bleaching and divided into: G1(WHP3): 35% HP with CR (Whiteness HP) at 3:1 ratio; G2(WHP1) : 35% HP (Whiteness HP) with CR at 1:1 ratio ; G3(OPA): 38% HP (Opalescence Boost) e G4(CT): control group. Three bleaching sessions were performed with an interval of 7 days between them; the bleaching gel was applied to the buccal surface and placed inside the pulp chamber. 7 days after from the last bleaching session, the teeth were submitted to the fracture resistance test at the testing machine. Similar bleaching protocols were used in other identical groups to assess the reduction of dentin microhardness. The microhardness was measured, using knoop microhardness, before and after 4 sessions of bleaching pr...

Journal of Research in Dentistry, 2013

PURPOSE: The purpose of this study was to evaluate the increase of the cervical area and dentin t... more PURPOSE: The purpose of this study was to evaluate the increase of the cervical area and dentin thickness in mesial and distal walls of the mesial canals from mandibular molars after the use of LA Axxess (LA), CP Drill (CP) and Gates-Glidden (GG) rotary instruments. MATERIAL AND METHODS: Sixty root canals from thirty mandibular first molar were sectioned 3 mm below the cement-enamel junction, divided in 3 groups (n = 20 root canals, each) according to rotary instrument used, and the cervical images were captured before and after pre-enlargement instrumentation. The increase of the instrumented cervical area (mm2) and the dentin removal thickness (mm), at mesial and distal walls were calculated using Image tools software, by comparison of images. Data were analyzed by ANOVA and Tukey tests (p=0.05). RESULTS: All rotary instruments promoted thickness reduction in dentin walls. In mesial wall, all rotary instruments promoted similar thickness reduction of dentinal wall and did not dif...

The Journal of Contemporary Dental Practice, 2015

The objective of this study was to describe the main lesions that simulate clinically and propose... more The objective of this study was to describe the main lesions that simulate clinically and propose a treatment protocol for acute endodontic infection. Signs and clinical symptoms of periodontal abscess, gingival abscess, odontoma, herpes simplex, pericoronitis, acute pulpitis and necrotizing ulcerative gingivitis/periodontitis (NUG/NUP) were described and compared with acute endodontic infections. A treatment protocol was described by optimizing the procedures in access cavity, microbial decontamination and detoxification of the root canal, apical debridement, intracanal and systemic medication and surgical drainage procedures. The convenience of the use of 5.25% sodium hypochlorite, root canal instrumentation using a crown-down technique, intracanal medication with 2% chlorhexidine or triple antibiotic paste and the convenience of the use of antibiotics, analgesics, and surgical drainage to solve cases of acute dentoalveolar abscess was discussed.

Revista de Odontologia da UNESP, 2015

Objetivo Avaliar o efeito da dentina sobre o pH e a atividade antimicrobiana de formulações com h... more Objetivo Avaliar o efeito da dentina sobre o pH e a atividade antimicrobiana de formulações com hidróxido de cálcio. Material e método O pH e a atividade antimicrobiana das formulações (G1- polietilenoglicol, G2- glicerina e paramonoclorofenol canforado ou G3- clorexidina) foram analisados nas formulações puras (G1A, G2A e G3A) ou acrescidas de dentina em pó (G1B, G2B e G3B). Tubos de polietileno foram preenchidos com uma das formulações e imersos em água destilada. O pH foi analisado após 24 horas, 7, 14 e 21 dias. A atividade antimicrobiana foi avaliada sobre Enterococcus faecalis (ATCC 29212), através do teste de difusão em ágar. Os resultados foram submetidos aos testes de ANOVA e Tukey (p=0,05). Resultado A dentina não exerceu efeito sobre o pH das formulações, exceto ocasionando a redução em G1, no período de 24 horas (p<0,05). Nas demais formulações, não houve interferência da dentina sobre o pH (p>0,05). Quando comparados entre os grupos, em 24 horas e 7 dias, G1A e G1...

The journal of contemporary dental practice, Dec 1, 2015

The objective of this study was to describe the main lesions that simulate clinically and propose... more The objective of this study was to describe the main lesions that simulate clinically and propose a treatment protocol for acute endodontic infection. Signs and clinical symptoms of periodontal abscess, gingival abscess, odontoma, herpes simplex, pericoronitis, acute pulpitis and necrotizing ulcerative gingivitis/periodontitis (NUG/NUP) were described and compared with acute endodontic infections. A treatment protocol was described by optimizing the procedures in access cavity, microbial decontamination and detoxification of the root canal, apical debridement, intracanal and systemic medication and surgical drainage procedures. The convenience of the use of 5.25% sodium hypochlorite, root canal instrumentation using a crown-down technique, intracanal medication with 2% chlorhexidine or triple antibiotic paste and the convenience of the use of antibiotics, analgesics, and surgical drainage to solve cases of acute dentoalveolar abscess was discussed.

The purpose of this study was to evaluate the effect of the hydrogen peroxide and the carmine red... more The purpose of this study was to evaluate the effect of the hydrogen peroxide and the carmine red pigment (CR) at 3:1 and 1:1 ratio, on the fracture resistance and dentin microhardness of bovine teeth submitted to tooth bleaching. Forty endodontically treated incisors were subjected to bleaching and divided into: G1(WHP3): 35% HP with CR (Whiteness HP) at 3:1 ratio; G2(WHP1) : 35% HP (Whiteness HP) with CR at 1:1 ratio ; G3(OPA): 38% HP (Opalescence Boost) e G4(CT): control group. Three bleaching sessions were performed with an interval of 7 days between them; the bleaching gel was applied to the buccal surface and placed inside the pulp chamber. 7 days after from the last bleaching session, the teeth were submitted to the fracture resistance test at the testing machine. Similar bleaching protocols were used in other identical groups to assess the reduction of dentin microhardness. The microhardness was measured, using knoop microhardness, before and after 4 sessions of bleaching pr...

Journal of Research in Dentistry, 2013

PURPOSE: The purpose of this study was to evaluate the increase of the cervical area and dentin t... more PURPOSE: The purpose of this study was to evaluate the increase of the cervical area and dentin thickness in mesial and distal walls of the mesial canals from mandibular molars after the use of LA Axxess (LA), CP Drill (CP) and Gates-Glidden (GG) rotary instruments. MATERIAL AND METHODS: Sixty root canals from thirty mandibular first molar were sectioned 3 mm below the cement-enamel junction, divided in 3 groups (n = 20 root canals, each) according to rotary instrument used, and the cervical images were captured before and after pre-enlargement instrumentation. The increase of the instrumented cervical area (mm2) and the dentin removal thickness (mm), at mesial and distal walls were calculated using Image tools software, by comparison of images. Data were analyzed by ANOVA and Tukey tests (p=0.05). RESULTS: All rotary instruments promoted thickness reduction in dentin walls. In mesial wall, all rotary instruments promoted similar thickness reduction of dentinal wall and did not dif...

The Journal of Contemporary Dental Practice, 2015

The objective of this study was to describe the main lesions that simulate clinically and propose... more The objective of this study was to describe the main lesions that simulate clinically and propose a treatment protocol for acute endodontic infection. Signs and clinical symptoms of periodontal abscess, gingival abscess, odontoma, herpes simplex, pericoronitis, acute pulpitis and necrotizing ulcerative gingivitis/periodontitis (NUG/NUP) were described and compared with acute endodontic infections. A treatment protocol was described by optimizing the procedures in access cavity, microbial decontamination and detoxification of the root canal, apical debridement, intracanal and systemic medication and surgical drainage procedures. The convenience of the use of 5.25% sodium hypochlorite, root canal instrumentation using a crown-down technique, intracanal medication with 2% chlorhexidine or triple antibiotic paste and the convenience of the use of antibiotics, analgesics, and surgical drainage to solve cases of acute dentoalveolar abscess was discussed.

Revista de Odontologia da UNESP, 2015

Objetivo Avaliar o efeito da dentina sobre o pH e a atividade antimicrobiana de formulações com h... more Objetivo Avaliar o efeito da dentina sobre o pH e a atividade antimicrobiana de formulações com hidróxido de cálcio. Material e método O pH e a atividade antimicrobiana das formulações (G1- polietilenoglicol, G2- glicerina e paramonoclorofenol canforado ou G3- clorexidina) foram analisados nas formulações puras (G1A, G2A e G3A) ou acrescidas de dentina em pó (G1B, G2B e G3B). Tubos de polietileno foram preenchidos com uma das formulações e imersos em água destilada. O pH foi analisado após 24 horas, 7, 14 e 21 dias. A atividade antimicrobiana foi avaliada sobre Enterococcus faecalis (ATCC 29212), através do teste de difusão em ágar. Os resultados foram submetidos aos testes de ANOVA e Tukey (p=0,05). Resultado A dentina não exerceu efeito sobre o pH das formulações, exceto ocasionando a redução em G1, no período de 24 horas (p<0,05). Nas demais formulações, não houve interferência da dentina sobre o pH (p>0,05). Quando comparados entre os grupos, em 24 horas e 7 dias, G1A e G1...

The journal of contemporary dental practice, Dec 1, 2015

The objective of this study was to describe the main lesions that simulate clinically and propose... more The objective of this study was to describe the main lesions that simulate clinically and propose a treatment protocol for acute endodontic infection. Signs and clinical symptoms of periodontal abscess, gingival abscess, odontoma, herpes simplex, pericoronitis, acute pulpitis and necrotizing ulcerative gingivitis/periodontitis (NUG/NUP) were described and compared with acute endodontic infections. A treatment protocol was described by optimizing the procedures in access cavity, microbial decontamination and detoxification of the root canal, apical debridement, intracanal and systemic medication and surgical drainage procedures. The convenience of the use of 5.25% sodium hypochlorite, root canal instrumentation using a crown-down technique, intracanal medication with 2% chlorhexidine or triple antibiotic paste and the convenience of the use of antibiotics, analgesics, and surgical drainage to solve cases of acute dentoalveolar abscess was discussed.