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1.
BMC Oral Health ; 21(1): 175, 2021 04 07.
Artigo em Inglês | MEDLINE | ID: mdl-33827520

RESUMO

BACKGROUND: The aim of this study was to determine in vitro the bactericidal potential of 38% silver diamine fluoride (SDF) alone, potassium iodide (PI) alone, and the two in combination (SDF + PI) against three bacterial species commonly found in root canal samples (Enterococcus faecalis, Actinomyces naeslundii and Parvimonas micra). METHODS: The potential bactericidal rates for SDF, PI and SDF + PI against E. faecalis, A. naeslundii and P. micra were calculated as reduction of bacteria colony forming units. RESULTS: The bactericidal potential of SDF was at 99.97-100% against E. faecalis and 100% against A. naeslundii and P. micra. SDF + PI showed a 100% bactericidal effect against P. micra, 99.89-99.98% against E. faecalis and 99.98-100% against A. naeslundii. The bactericidal effect of PI was 99.51-99.98% against E. faecalis, 99.27-99.95% against A. naeslundii and 99.93-100% against P. micra. The differences between controls and bacteria exposed to the antibacterial agents were statistically significant (p < 0.05). CONCLUSIONS: SDF had an effective bactericidal effect against the examined bacteria. However, the limitations of this in vitro study do not allow a recommendation of the employment of these solutions as root canal irrigants. Additional investigations are necessary to assess their endodontic clinical applicability.


Assuntos
Iodeto de Potássio , Irrigantes do Canal Radicular , Actinomyces , Antibacterianos/farmacologia , Enterococcus faecalis , Firmicutes , Fluoretos Tópicos , Humanos , Compostos de Amônio Quaternário , Compostos de Prata
2.
BMC Oral Health ; 21(1): 177, 2021 04 07.
Artigo em Inglês | MEDLINE | ID: mdl-33827540

RESUMO

BACKGROUND: We established an in vivo intraradicular biofilm model of apical periodontitis in pigs in which we compared the efficacy of different irrigant activation techniques for biofilm removal. METHODS: Twenty roots from the deciduous mandibular second premolar of 5 male pigs were used. After pulpectomy, canals were left open for 2 weeks and then sealed for 4 weeks to enable the development of an intracanal biofilm. The intraradicular biofilms was evaluated using SEM and bacterial 16S rRNA gene-sequencing. To investigate the efficacy of biofilm removal, root canal irrigations were performed using conventional needle, passive ultrasonic, subsonic, or laser-activated irrigation. Real-time PCR was conducted to quantitate the remaining biofilm components. Statistical analysis was performed using ANOVA followed by a Tukey kramer post-hoc test with α = 0.05. RESULTS: The pulp exposure model was effective in inducing apical periodontitis and SEM analysis revealed a multi-layer biofilm formation inside the root canal. 16S rRNA sequence analysis identified Firmicutes, Bacteroidetes, and Fusobacteria as the predominant bacterial phyla components, which is similar to the microbiome profile seen in humans. None of the tested irrigation techniques completely eradicated the biofilm components from the root canal, but the subsonic and laser-activated irrigation methods produced the lowest bacterial counts (p < 0.05). CONCLUSIONS: An experimental intraradicular biofilm model has been successfully established in pigs. Within the limitations of the study, subsonic or laser-activated irrigation demonstrated the best biofilm removal results in the pig system.


Assuntos
Cavidade Pulpar , Irrigantes do Canal Radicular , Animais , Biofilmes , Masculino , RNA Ribossômico 16S/genética , Preparo de Canal Radicular , Hipoclorito de Sódio , Suínos , Irrigação Terapêutica
3.
J Adhes Dent ; 23(2): 167-175, 2021 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-33825430

RESUMO

PURPOSE: To investigate the effects of root canal irrigants, dentin surface treatment, and timing of the restoration on the microtensile bond strength (µTBS) of a universal adhesive to deep coronal dentin. MATERIALS AND METHODS: Ninety (90) intact molars were grouped according to the irrigation protocol: group 0 (saline, control group); group 1: 5.25% sodium hypochlorite (NaOCl), 17% ethylenediaminetetraacetic acid (EDTA) followed by 5.25% NaOCl; group 2: 18% etidronic acid (HEDP) + 5.25% NaOCl in a single mixture. Groups 1 and 2 were divided into 2 subgroups (n = = 10) according to the time of restoration: immediate (subgroup A) and after 7 days (subgroup B). Four other groups (n = 10) were created according to the dentin surface pretreatment and received an immediate restoration: group 3: 5.25% NaOCl - 17% EDTA and AH Plus Cleaner; group 4: 5.25% NaOCl - 17% EDTA and 100% ethanol; group 5: 5.25% NaOCl + 18% HEDP and AH Plus Cleaner; group 6: 5.25% NaOCl + 18% HEDP and 100% ethanol. µTBS testing was carried out for each subgroup and interfaces were analyzed through SEM. The µTBS was analyzed with Welch statistics and the post-hoc Games-Howell test for multiple comparisons (p < 0.05). RESULTS: Statistically significant differences were observed between test groups and control groups (p < 0.001), except for group 3 (p = 0.349). No significant differences were recorded between groups 1A (27.5 ± 8.7 MPa), 2A (32.6 ± 14.5 MPa) and 3 (27.3 ± 14.3 MPa). Group 6 (48.6 ± 11.6 MPa) exhibited the highest µTBS among all tested groups. For groups 1 and 2, significantly higher values were recorded for subgroups 1B (39.3 ± 7.6 MPa) and 2B (43.8 ± 8.3 MPa) compared to subgroups 1A (27.5 ± 8.7 MPa) and 2A (32.6 ± 14.5 MPa). CONCLUSION: When using NaOCl as root canal irrigant, it is advisable to delay the placement of a post-endodontic-treatment restoration.


Assuntos
Colagem Dentária , Cimentos Dentários , Cavidade Pulpar , Análise do Estresse Dentário , Dentina , Ácido Edético , Teste de Materiais , Irrigantes do Canal Radicular , Preparo de Canal Radicular , Hipoclorito de Sódio
4.
Rev. Odontol. Araçatuba (Impr.) ; 42(1): 9-13, jan.-abr. 2021. tab
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1148159

RESUMO

O objetivo do presente estudo foi mensurar o pH externo radicular de dentes bovinos que foram desinfetados em solução de cloramina por 7 dias. Neste estudo foram utilizadas soluções irrigadoras, hipoclorito de sódio 1%, clorexidina 0,12% e hipoclorito de sódio 2,5% associadas ao edta e as medicações intracanais, hidróxido de cálcio, hidróxido de cálcio com PMCC e clorexidina gel 2%. O preparo químico mecânico foi realizado com as limas easy logic e as soluções foram agitadas com ultrassom durante 3 minutos e após os dentes foram imersos em água deionizada em eppendorfs estéreis e mantidos em estufa a 37°C. O pH externo foi analisado utilizando as fitas medidoras de pH no período de 24 horas, 48 horas, 7 dias, 10 dias e 15 dias. A normalidade dos valores obtidos de cada ensaio foi testada através do teste Kolmogorof- Smirnov, e o teste estatístico foi ANOVA de uma via e comparações múltiplas de Tukey. Os resultados mostraram que houve diferença estatística nos valores de pH nos grupos avaliados dentro dos tempos (p< 0,05). Concluiu-se que mesmo com as variações de pH nos períodos avaliados, as medicações e as soluções irrigantes podem ser utilizadas de forma associadas na endodontia, com o intuito de eliminar o maior número de microrganismos dos canais radiculares(AU)


The objective of the present study was to measure the external root pH of bovine teeth that were disinfected in chloramine solution for 7 days. Irrigating solutions, 1% sodium hypochlorite, 0.12% chlorhexidine and 2.5% sodium hypochlorite associated with edta and intracanal medications, calcium hydroxide, calcium hydroxide with PMCC and chlorhexidine gel 2%. The mechanical chemical preparation was performed with the easy logic files and the solutions were shaken with ultrasound for 3 minutes and after the teeth were immersed in deionized water in eppendorfs and kept in an oven at 37 ° C. The external pH was analyzed using the pH measuring tapes in the period of 24 hours, 48 hours, 7 days, 10 days and 15 days. The normal values obtained from each test were tested using the Kolmogorof-Smirnov test, and the statistical test was one-way ANOVA and Tukey's multiple comparisons. The results showed that there was a statistical difference in pH values in the groups evaluated within the times (p< 0.05). It was concluded that even with pH variations in the evaluated periods, medications and irrigating solutions can be used in an associated way in endodontics, in order to eliminate the largest number of microorganisms in the root canals(AU)


Assuntos
Irrigantes do Canal Radicular , Preparo de Canal Radicular , Hipoclorito de Sódio , Hidróxido de Cálcio , Cloraminas , Clorexidina , Análise de Variância , Ácido Edético , Endodontia
5.
Eur J Oral Sci ; 129(2): e12769, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33667031

RESUMO

This study evaluated the effects of 9% etidronic acid (HEBP) and 17% ethylenediaminetetraacetic acid (EDTA) used either with conventional syringe irrigation (CSI) or passive ultrasonic irrigation (PUI) on the fracture resistance of roots with different dentine thickness. The root canals of 120 extracted teeth were widened, leaving dentinal walls with different thicknesses of either 0.75 mm, 1.50 mm, or 2.25 mm with 40 teeth in each group. Within each of these groups, four subgroups (n = 10) were formed according to the final irrigation regimens applied: 2.5% NaOCl-17% EDTA with CSI; 2.5% NaOCl-17% EDTA with PUI; 2.5% NaOCl + 9% HEBP with CSI; 2.5% NaOCl + 9% HEBP with PUI. The irrigated root canals were obturated with AH Plus sealer and gutta-percha cones. A compressive vertical loading was applied to the samples and the force at fracture was recorded. Data were statistically analysed using a multiple linear regression analysis. The most influencing factor for the fracture strength of roots was the remaining dentine thickness, followed by the irrigation method, and then the irrigation solution. The samples irrigated using PUI were statistically significantly more resistant to fracture than those using CSI (mean difference = 116.3 N; 95% CI = [53.9, 178.6] N). The application of HEBP was associated with higher resistance to fracture than the application of EDTA (mean difference = 71.0 N; 95% CI = [8.6, 133.3] N).


Assuntos
Irrigantes do Canal Radicular , Hipoclorito de Sódio , Cavidade Pulpar , Dentina , Ácido Edético , Preparo de Canal Radicular , Irrigação Terapêutica
6.
BMC Oral Health ; 21(1): 116, 2021 03 12.
Artigo em Inglês | MEDLINE | ID: mdl-33711992

RESUMO

BACKGROUND: Compare antimicrobial efficacy of a quarternary ammonium silane (QAS)/k21 as an intracanal medicament against E. faecalis and C. albicans biofilms formed on root dentin. METHODOLOGY: Dentin blocks were sterilized and E. faecalis and C. albicans microbial colonies were counted for colony-forming-units against 2%k21, 2%CHX and Ca(OH)2 medicaments. Biofilm colonies after 7 days on dentin were analysed using confocal laser scanning microscopy with live/dead bacterial viability staining. TEM was done to study dentin collagen matrix. Dentin discs from 3rd day and 7th day well plate was used for Raman spectra and observed under fluorescent-microscope. Docking studies were carried out on MMP-2 S1 binding-domain with k21. RESULTS: There was reduction of E. faecalis/C. albicans when k21, chlorhexidine and calcium hydroxide were used with highest percentage in 2%k21 treated specimens. 2%k21 showed dense and regular collagen network with intact cross-banding and decreased Raman intensity for 2%k21 on 3rd day. NaOCl + k21 showed least adherence, whereas saline groups showed highest adherence of E. faecalis and C. albicans to root-canal dentin. Alizarin red staining of hDPSCs revealed calcium deposition in all groups with significant difference seen amongst 2%k21 groups. MMP-2 ligand binding was seen accurately indicating possible target sites for k21 intervention. CONCLUSION: 2%k21 can be considered as alternative intracanal medicament.


Assuntos
Compostos de Amônio , Silanos , Biofilmes , Hidróxido de Cálcio , Clorexidina/farmacologia , Cavidade Pulpar , Dentina , Enterococcus faecalis , Humanos , Irrigantes do Canal Radicular/farmacologia
7.
Eur J Paediatr Dent ; 22(1): 10-14, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33719476

RESUMO

AIM: In vitro evaluation of cleanliness of root canal walls of primary molars after preparation with the Self-Adjusting-File and Mtwo-instruments and final irrigation with citric acid and sodium hypochlorite. MATERIALS AND METHODS: s Study Design: In 23 matched pairs, teeth were prepared either with SAF or with Mtwo NiTi-instruments, and final irrigation was performed with 2 mL citric acid and 4 mL NaOCl. Roots were split longitudinally, SEM-images were taken, and smear layer was evaluated by two blinded observers using a four-grade score. Statistical evaluation was performed with Mann-Whitney-U-Test and Wilcoxon Signed Rank Test (P<0.05). RESULTS: No significant difference between SAF and Mtwo (P=0.9454) was observed. Overall removal of the smear layer was significantly better in the coronal part of the root canal than in the apical one (P=0.0004393). Mtwo showed no significant difference in cleanliness when comparing the coronal and apical part of the root canal (P=0.1089), whereas SAF cleaned the coronal part of the root canal significantly better than the apical part (P=0.00108). CONCLUSION: None of the two instruments was superior concerning cleanliness in root canals of primary molars. Both show good cleaning ability when using an irrigation protocol with citric acid and sodium hypochlorite.


Assuntos
Cavidade Pulpar , Camada de Esfregaço , Humanos , Microscopia Eletrônica de Varredura , Dente Molar/cirurgia , Irrigantes do Canal Radicular , Preparo de Canal Radicular , Hipoclorito de Sódio
8.
J Endod ; 47(5): 800-805, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33581196

RESUMO

INTRODUCTION: The purpose of this study was to observe the release of vascular endothelial growth factor (VEGF) after conditioning with etidronic acid (also known as 1-hydroxyethylidene-1 and 1-bisphosphonate [HEDP]) and phytic acid (inositol hexakisphosphate [IP6]) in comparison with EDTA on human dentin disks and cylinders. METHODS: Human dentin disks were disinfected and prepared by the standardized method. Seventeen percent EDTA, 9% HEDP, 1% IP6, and distilled water (5 minutes) were used to immerse dentin disks. The dentin cylinders were prepared by following disinfection and the standardized preparation method to achieve a truncated cone-shaped canal with a 1-mm open apex. The dentin cylinder samples were irrigated with sodium hypochlorite (5 mL/5 minutes) and then rinsed with 17% EDTA, 9% HEDP, 1% IP6 and distilled water (5 mL/5 min). Enzyme-linked immunosorbent essay was performed to measure VEGF release. One-way analysis of variance was used to compare the mean release of VEGF between study groups and controls at a significance level of .05. A post hoc Tukey test was used for multiple comparisons between study groups. RESULTS: Among conditioners, HEDP released more VEGF from both disks and cylinders. In cylinders, VEGF release by HEDP was significantly greater than the other conditioners, whereas in disks the release of VEGF was similar with all conditioners. CONCLUSIONS: The release of VEGF by 9% HEDP and 1% IP6 was comparable with 17% EDTA from dentin disks; however, HEDP demonstrated more release from dentin cylinders than EDTA and IP6.


Assuntos
Irrigantes do Canal Radicular , Fator A de Crescimento do Endotélio Vascular , Dentina , Ácido Edético , Humanos , Hipoclorito de Sódio
9.
J Endod ; 47(5): 696-704, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33607121

RESUMO

INTRODUCTION: The aim of this study was to evaluate the postoperative pain in patients after endodontic treatment using 8.25% sodium hypochlorite (NaOCl) compared with other concentrations and 2% chlorhexidine (CHX). METHODS: In this double-blind randomized trial, 180 patients were evaluated who underwent a single session of endodontic treatment under irrigation with 2.5%, 5.25%, or 8.25% NaOCl or 2% CHX solutions. The presence of postoperative pain was assessed 24, 48, and 72 hours after treatment and recorded using the visual analog scale (VAS). A descriptive analysis, logistic regression, and Wald test were performed. RESULTS: Altogether 169 patients participated, of whom 107 were women, and the mean age was 38.1 ± 14.4 years. No significant differences occurred between the irrigants and the pain outcomes, not even for the use of postoperative pain medication and responses to VAS (P > .05). In the multivariate model including irrigants, after 24 hours or at any time, a significant difference (P < .05) remained in preparation time ≥10 minutes and the presence of overfilling. Also, in relation to the VAS, the overfilling presented significantly different results (P < .05). CONCLUSIONS: There was no significant difference in the presence of postoperative pain between the 8.25% NaOCl and the other irrigation solutions. However, the extended preparation time and the overfilling material were responsible for the increase of postoperative pain.


Assuntos
Irrigantes do Canal Radicular , Hipoclorito de Sódio , Adulto , Clorexidina , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor Pós-Operatória/tratamento farmacológico , Preparo de Canal Radicular , Adulto Jovem
10.
BMC Oral Health ; 21(1): 81, 2021 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-33618701

RESUMO

BACKGROUND: Irrigation of the pulp space is a mandatory step to get rid of all its organic and inorganic content. Activation of the irrigants play a key role in the era of minimally invasive endodontics. The aim of this study was to assess the effectiveness of different irrigants activation methods in removing the smear layer at 1, 3, 5 and 8 mm from the apex from conservatively shaped canals. METHODS: Eighty-five human mandibular premolars were selected. Specimens were shaped to TruShape 25/.06 and divided into 5 groups (1 control and 4 test groups) according to the final activation technique (EndoActivator, EA), Ultrasonic (EndoUltra, PUI) and Laser (PIPS and SWEEPS). EDTA (Ethylenediaminetetraacetic acid) followed by NaOCl (Sodium Hypochlorite) and again EDTA were activated for each test group. Specimens were then split longitudinally and observed by Field Emission Scanning Electron Microscopy (FESEM). Blinded evaluation of the presence of smear layer was performed at 1000X magnification, according to a 5-score index system. Comparison between groups were analysed statistically using the Kruskal-Wallis non-parametric analysis of variance. Bonferroni multiple comparison tests were used. RESULTS: At 1 mm only PIPS and SWEEPS performed better than the control group. At 3, 5 and 8 mm from the apex, every activation technique showed statistically significant reduction of smear layer when compared to the control group. PIPS and SWEEPS obtained better cleanliness result compared to EA, while only PIPS was superior to PUI in terms of cleanliness. CONCLUSIONS: PIPS and SWEEPS showed the best results in conservative canal preparations. Nowadays, contemporary rotary instruments allow fast and minimally invasive shaping of the endodontic space. In this scenario irrigants' activation may be regarded as a mandatory step to a favourable clinical outcome.


Assuntos
Camada de Esfregaço , Cavidade Pulpar , Ácido Edético , Humanos , Lasers , Microscopia Eletrônica de Varredura , Irrigantes do Canal Radicular/uso terapêutico , Preparo de Canal Radicular , Hipoclorito de Sódio/uso terapêutico , Irrigação Terapêutica , Ultrassom
11.
BMC Oral Health ; 21(1): 41, 2021 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-33482797

RESUMO

BACKGROUND: This study aimed to assess the effect of a 980-nm diode laser following chemomechanical root canal preparation on the severity of post-operative pain (PP) after root canal treatment (RCT). METHODS: This study included asymptomatic, single-rooted teeth with a periapical index (PAI) score of 3 or 4. All the patients received RCT, including dressing with calcium hydroxide (Ca(OH)2), during two visits. The patients were randomly divided into two groups (n:30): a control group, in which the final irrigation was performed using 5 ml of 2.5% sodium hypochlorite (NaOCI), followed by 5 ml of 17% and ethylenediaminetetraacetic acid (EDTA) and 5 ml of distilled water, and a laser group, in which the root canals were irradiated using a 980-nm diode laser after the final irrigation at both visits. The pain levels after both visits were evaluated using a visual analogue scale (VAS) after 8 h, 24 h, 48 h and 7 d. In addition, the time intervals to medication intake were recorded. The collected data were statistically analysed using the chi-square and Mann-Whitney U test (p < 0.05). RESULTS: The average pain level in the control group 24 h after the first visit was significantly higher than that in the laser group (p < 0.05). The average pain level 24 h and 48 h after the second visit was significantly higher in the control group (p < 0.05). The levels of PP 24 h after the first visit were higher than those after the second visit only in the control group (p < 0.05). After the first visit, analgesic use in the control group was significantly higher after 8 h (40%) and 24 h (23%) as compared with that in the laser group (p < 0.05). CONCLUSIONS: Root canal irradiation with a diode laser may reduce PP after RCT in single-rooted teeth with a PAI score of 3 or 4. TRIAL REGISTRATION: Effect of the Diode Laser on Post-operative Pain After Endodontic Treatment in Teeth with Apical Periodontitis: NCT04486196. Registered 24 July 2020-Retrospectively registered, http://clinicaltrials.gov/ct2/show/NCT04486196.


Assuntos
Lasers Semicondutores , Periodontite Periapical , Cavidade Pulpar , Humanos , Lasers Semicondutores/uso terapêutico , Dor Pós-Operatória , Periodontite Periapical/cirurgia , Irrigantes do Canal Radicular , Preparo de Canal Radicular , Tratamento do Canal Radicular/efeitos adversos , Hipoclorito de Sódio/uso terapêutico
12.
J Endod ; 47(3): 451-457, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33359252

RESUMO

INTRODUCTION: The purpose of this study was to examine the colonization and tubular invasion of Enterococcus faecalis in minimally altered canal walls. We hypothesized that age, axial directions (buccolingual or mesiodistal), regions (apical, midroot, or cervical), and disinfection treatment (sodium hypochlorite or autoclave) would impact bacterial colonization and invasion patterns. METHODS: Single roots of extracted teeth from 2 age groups (≤30 years old and ≥60 years old) were challenged with bacteria for 2 weeks. Colonization on the canal walls in 3 regions was evaluated with scanning electron microscopy. The prevalence of tubular invasion in the axial directions in 3 regions was examined with confocal laser scanning microscopy. The data were analyzed using the GLIMMIX procedure in SAS software (SAS Institute Inc, Cary, NC) with a Tukey adjustment for comparisons. RESULTS: Bacteria successfully colonized and invaded tubules in 2 weeks. The apical region in the ≥60-year age group was the least infected. A significantly higher invasion prevalence in a buccolingual (B/L) than a mesiodistal (M/D) direction was detected in both age groups and in all 3 regions. The ≤30-year age group had a significantly higher prevalence of tubular invasion than the ≥60-year age group in the B/L and M/D direction, respectively. Sodium hypochlorite treatment significantly impacted bacterial colonization and invasion in more calcified areas. CONCLUSIONS: Our data support a more conservative enlargement of the apical region of older teeth. An emphasis in a B/L direction rather than an M/D direction is recommended for debridement.


Assuntos
Enterococcus faecalis , Irrigantes do Canal Radicular , Biofilmes , Cavidade Pulpar , Dentina , Microscopia Confocal , Hipoclorito de Sódio/farmacologia
13.
Sci Rep ; 10(1): 22073, 2020 12 16.
Artigo em Inglês | MEDLINE | ID: mdl-33328515

RESUMO

The combination of ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) has been advocated as an effective irrigation methodology to remove organic and inorganic matter in root canal therapy. Yet, it was suggested that both solutions might lead to structural changes of the dentinal wall surface, depending on the order of application which might affect sealer mechanical retention. This study aims to evaluate the effect of different irrigating protocols on dentin surface roughness using quantitative 3D surface texture analysis. Data stems from 150 human root dentin sections, divided into five groups, each prepared according to one of the following protocols: Negative control; 17% EDTA; 17% EDTA followed by 5.25% NaOCl; 5.25% NaOCl; and 5.25% NaOCl followed by 17% EDTA. Each dentin sample was examined for its three-dimensional surface texture using a high-resolution confocal disc-scanning measuring system. EDTA 17% and the combined EDTA 17% with NaOCl 5.25% showed considerably higher roughness properties compared to the control and to NaOCl 5.25% alone. However, the irrigation sequence did not affect the dentin roughness properties. Therefore, mechanical retention is probably not dependent upon the selection of irrigation protocol sequence.


Assuntos
Ácido Edético/administração & dosagem , Irrigantes do Canal Radicular/administração & dosagem , Tratamento do Canal Radicular , Hipoclorito de Sódio/administração & dosagem , Raiz Dentária , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
14.
Br Dent J ; 229(12): 761, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33339910
15.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 40-47, set./dez. 2020. ilus, graf
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1121745

RESUMO

Este trabalho consiste em uma pesquisa realizada sobre a utilização de líquidos irrigantes por cirurgiões dentistas na cidade de Itabuna-BA. Para isto, delimitou-se a seguinte problemática: quais são as escolhas dos líquidos irrigantes nos tratamentos endodônticos com o intuito de promover uma total desinfecção dos canais radiculares? E como objetivo geral, elucidar sobre as escolhas dos cirurgiões dentistas localizados na cidade de Itabuna-Bahia em relação as substâncias utilizadas como coadjuvantes no tratamento endodôntico durante a etapa de irrigação. A pesquisa teve uma abordagem qualitativa e foi utilizado o instrumento questionário com cem dentistas da cidade selecionada. Este questionário consistia em oito perguntas, dentre elas qual irrigante utilizado e a porcentagem do mesmo. Com relação aos resultados, pode-se afirmar que no tratamento endodôntico, o hipoclorito de sódio continua sendo a solução irrigante de escolha entre os profissionais, diferentes concentrações de soluções de hipoclorito de sódio são empregadas durante o preparo biomecânico, por endodontistas e clínicas gerais que praticam a endodontia, não existindo uma unanimidade quanto a escolha, nenhum acordo existe em relação a sua concentração ideal(AU)


This work consists of a research carried out on the use of irrigating liquids by dental surgeons in the city of Itabuna-BA. For this, the following problem was defined: what are the choices of irrigating liquids in endodontic treatments in order to promote a total disinfection of the root canals? And as a general objective, elucidate about the choices of dentists located in the city of Itabuna-Bahia in relation to the substances used as adjuvants in endodontic treatment during the irrigation stage. The research had a qualitative approach and the questionnaire was used with 100 dentists in the selected city. This questionnaire consisted of eight questions, including which irrigant was used and the percentage of it. Regarding the results, it can be said that in endodontic treatment, sodium hypochlorite remains the irrigating solution of choice among professionals, different concentrations of sodium hypochlorite solutions are used during biomechanical preparation by endodontists and general practitioners who practice endodontics, there is no unanimity as to the choice, no agreement exists regarding their ideal concentration(AU)


Assuntos
Irrigantes do Canal Radicular , Preparo de Canal Radicular , Hipoclorito de Sódio , Clorexidina , Ácido Edético , Malicum Acidum
16.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 55-60, set./dez. 2020. ilus, tab
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1121756

RESUMO

Para o sucesso no tratamento endodôntico é necessário a limpeza e modelagem dos condutos radiculares. Para isso, utilizam-se algumas técnicas de preparo dos canais com o intuito de remover o conteúdo patológico, visando sanar o canal radicular. Após um preparo cuidadoso e preciso, a obturação que acompanha a técnica escolhida deve apresentar um selamento adequado e preencher o sistema radicular com a finalidade de substituir o conteúdo natural ou patológico dos condutos por materiais inertes tolerados pelos tecidos periapicais. Com isso, o objetivo deste estudo in vitro foi avaliar por meio de radiografia digital, a qualidade de preenchimento de canais simulados retos quando os mesmos foram preparados manualmente e obturados utilizando condensação lateral e Mcsppaden e preparados com o sistema rotatório e obturados com a técnica de cone único. Para este estudo foram utilizados 20 blocos de canais radiculares simulados retos com comprimento de 21 mm. Estes blocos foram divididos em terços (cervical, médio e apical) em dois grupos que foram avaliados como ruim, bom e muito bom, onde foram obturados de duas formas diferentes, um grupo utilizando a técnica da condensação lateral mais emprego de Mcspadden e no outro grupo obturação com cone único após o preparo com o sistema mecanizado Protaper Universal. Os dados foram submetidos ao teste Qui-quadrado de Person e Teste Exato de Fisher com nível de significância de 95%. Os resultados obtidos apresentaram diferença significativas entre os terços obturados com as duas técnicas. Pode-se concluir, considerando a metodologia empregada e os resultados obtidos, que há diferença entre as duas técnicas obturadoras em relação a qualidade de preenchimento dos canais radiculares(AU)


Successful endodontic treatment requires cleaning and shaping of the root ducts. For this, some techniques of canal preparation are used in order to remove the pathological content, aiming to remedy the root canal. After careful and accurate preparation, the obturation accompanying the chosen technique must be properly sealed and fill the root system in order to replace the natural or pathological contents of the ducts with inert materials tolerated by the periapical tissues.Thus, the aim of this in vitro study was to evaluate by digital radiography the quality of filling of straight simulated channels when they were manually prepared and filled using lateral condensation and Mcsppaden and prepared with the rotary system and filled with the technique of single cone. For this study 20 blocks of simulated straight root canals with a length of 21 mm were used. These blocks were divided into thirds (cervical, middle and apical) into two groups that were evaluated as bad, good and very good, where they were filled in two different ways, one using the lateral condensation technique plus Mcspadden's and the other single cone obturation group after preparation with the Protaper Universal mechanized system. Data were submitted to Person Chi-square test and Fisher Exact Test with a significance level of 95%. The obtained results showed significant difference between the thirds filled with the two techniques. It can be concluded, considering the methodology employed and the results obtained, that there is a difference between the two obturator techniques in relation to the filling quality of the root canals(AU)


Assuntos
Materiais Restauradores do Canal Radicular , Obturação do Canal Radicular , Guta-Percha , Tecido Periapical , Irrigantes do Canal Radicular , Tratamento do Canal Radicular , Preparo de Canal Radicular
17.
Prim Dent J ; 9(4): 24-30, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33225845

RESUMO

This article provides a contemporary synopsis of effective cleaning of the root canal system, an essential stage of root canal treatment. It provides a clinical update on the current state of knowledge on cleaning of the root canal system, and presents an outline of essential theory and practical tips for achieving effective and safe cleaning of the root canal system.


Assuntos
Cavidade Pulpar , Irrigantes do Canal Radicular , Ácido Edético , Humanos , Microscopia Eletrônica de Varredura , Preparo de Canal Radicular , Hipoclorito de Sódio
18.
Prim Dent J ; 9(4): 65-84, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33225847

RESUMO

AIMS: This systematic review aims to identify and synthesise available evidence to determine the clinical and radiographic outcomes of REP involving any disinfection irrigant together with a non-antibiotic intracanal medicament. METHODS: Experimental and observational studies evaluating the outcomes of REP in immature non-vital permanent teeth in 6-16 year olds, where the protocol used any type of disinfectant irrigant together with a non-antibiotic intracanal medicament (non-setting calcium hydroxide) were included. Data was narratively synthesised and presented in respect to the primary outcome (elimination of symptoms and infection) and secondary outcomes (increase in root length/width; positive response to vitality testing; patient-reported outcomes; adverse effects). MAIN FINDINGS: 1628 studies were identified, of which five met the eligibility criteria for inclusion in the review. Studies included one randomised control trial and four observational studies. All five studies showed an absence of clinical signs and symptoms for all teeth postoperatively with radiographic resolution or absence of pathology following the disinfection stages of the REP used. Choice of secondary outcomes were inconsistent but included further root development, coronal discolouration and root canal calcifications postoperatively. There was a high risk of bias in all five studies and subsequently the quality of the evidence base was judged to be low. PRINCIPLE CONCLUSIONS: REP using a non-antibiotic disinfectant approach appears capable of providing satisfactory outcomes for a non-vital immature permanent tooth. Further high-quality research is required before solid recommendations towards clinical practice guidelines for the disinfection portion of REP can be implemented.


Assuntos
Desinfetantes , Endodontia Regenerativa , Necrose da Polpa Dentária , Humanos , Irrigantes do Canal Radicular/uso terapêutico , Tratamento do Canal Radicular
19.
Prim Dent J ; 9(4): 59-63, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33225856

RESUMO

Sodium hypochlorite is considered the most widely used irrigant in endodontics as it exhibits effective antimicrobial activity and has potent tissue-dissolving ability. Whilst it is considered safe when used within the confines of the root canal system, it can cause serious complications when inadvertent periradicular extrusion occurs. This article outlines the complications of sodium hypochlorite extrusion and reviews the appropriate management based on the contemporary evidence. Preventive measures are suggested and the relevant medico-legal considerations are outlined.


Assuntos
Endodontia , Hipoclorito de Sódio , Acidentes , Humanos , Irrigantes do Canal Radicular/efeitos adversos , Tratamento do Canal Radicular , Hipoclorito de Sódio/efeitos adversos
20.
Braz Dent J ; 31(5): 493-498, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33146332

RESUMO

This clinical study reports on the antibacterial effects and outcome of endodontic treatment using either a single-file or a multifile system, associated with calcium hydroxide interappointment medication. The root canals of single-rooted teeth with apical periodontitis were treated by using either Reciproc or BioRaCe instrument systems, 2.5% NaOCl irrigation, and calcium hydroxide medication. Bacteriological samples taken before preparation and immediately before obturation were evaluated for total bacterial counts by quantitative real-time polymerase chain reaction (qPCR). Patients were followed up and the treatment outcome was assessed by clinical and radiographic criteria. Decreasing lesions were classified as success in a lenient criterion or failure in a rigid one. Bacteria were detected in all initial samples (47 cases) and were significantly reduced after treatment in both groups (p<0.001). In the Reciproc and BioRaCe groups, 7/25 (28%) and 11/22 (50%) root canals yielded negative qPCR results before obturation, respectively (p>0.05). Quantitative bacterial reduction was similar between groups (p>0.05). The success rate in the BioRaCe group was 95.5% and 77% in the loose and rigid criterion, respectively. In the Reciproc group, corresponding figures were 88% and 76%. Differences in outcome were not significant (p>0.05). No diseased case showed negative qPCR results for bacteria. A difference of >1 Log10 counts was observed between healed and diseased cases. Root canal treatments of teeth with apical periodontitis using a single-file or a multifile system for preparation, associated with NaOCl irrigation and calcium hydroxide interappointment medication, showed similar antibacterial effectiveness and success rate.


Assuntos
Cavidade Pulpar , Periodontite Periapical , Hidróxido de Cálcio , Clorexidina , Desinfecção , Humanos , Periodontite Periapical/tratamento farmacológico , Irrigantes do Canal Radicular , Preparo de Canal Radicular , Hipoclorito de Sódio
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