scholarly journals Influence of smoking on oral cells genotoxicity after at-home bleaching using 22% carbamide peroxide: a cohort study

2021 ◽  
Author(s):  
Rodrigo Rohenkohl Silva ◽  
João Paulo De Carli ◽  
Kauê Collares ◽  
Júlia Vanini ◽  
Júlia Stephenie Presotto ◽  
...  
Keyword(s):  
Cohort Study ◽  
Carbamide Peroxide ◽  
Oral Cells ◽  
At Home

Association of advance care planning with place of death and utilisation of life-sustaining treatments in deceased patients at Taipei City Hospital in Taiwan

2020 ◽  
pp. bmjspcare-2020-002520
Author(s):  
Yung-Feng Yen ◽  
Ya-Ling Lee ◽  
Hsiao-Yun Hu ◽  
Wen-Jung Sun ◽  
Ming-Chung Ko ◽  
...  
Keyword(s):  
Cohort Study ◽  
Advance Care Planning ◽  
Place Of Death ◽  
Care Planning ◽  
City Hospital ◽  
Taipei City ◽  
Advance Care ◽  
Eol Care ◽  
To Receive ◽  
At Home

ObjectiveEvidence is mixed regarding the impact of advance care planning (ACP) on place of death. This cohort study investigated the effect of ACP programmes on place of death and utilisation of life-sustaining treatments for patients during end-of-life (EOL) care.MethodsThis prospective cohort study identified deceased patients between 2015 and 2016 at Taipei City Hospital. ACP was determined by patients’ medical records and defined as a process to discuss patients’ preferences with respect to EOL treatments and place of death. Place of death included hospital or home death. Stepwise logistic regression determined the association of ACP with place of death and utilisation of life-sustaining treatments during EOL care.ResultsOf the 3196 deceased patients, the overall mean age was 78.6 years, and 46.5% of the subjects had an ACP communication with healthcare providers before death. During the study follow-up period, 166 individuals died at home, including 98 (6.59%) patients with ACP and 68 (3.98%) patients without ACP. After adjusting for sociodemographic factors and comorbidities, patients with ACP were more likely to die at home during EOL care (adjusted OR (AOR)=1.71, 95% CI 1.24 to 2.35). Moreover, patients with ACP were less likely to receive cardiopulmonary resuscitation (AOR 0.36, 95% CI 0.25 to 0.51) as well as intubation and mechanical ventilation support (AOR 0.54, 95% CI 0.44 to 0.67) during the last 3 months of life.ConclusionPatients with ACP were more likely to die at home and less likely to receive life-sustaining treatments during EOL care.

scholarly journals Effect of school reopening on SARS-CoV-2 incidence in a low-prevalence region: Prospective SARS-CoV-2 testing in healthcare workers with primary school-attending children versus without children living at home

2021 ◽  
pp. 175717742110124
Author(s):  
Melvin Frie ◽  
Lisa M Havinga ◽  
Janneke Wiersema-Buist ◽  
Charlotte G Veldman ◽  
Marjan JT de Vries ◽  
...  
Keyword(s):  
Cohort Study ◽  
Population Density ◽  
Severe Acute Respiratory Syndrome ◽  
Primary School ◽  
Primary Schools ◽  
Healthcare Workers ◽  
Regional Strategies ◽  
Low Prevalence ◽  
At Home

Coronavirus disease 2019 (COVID-19) often presents asymptomatically or milder in children compared to adults. The role of young children in the transmission of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) remains largely unknown. In the Netherlands, the first action of loosening the partial lockdown that had been implemented to reduce SARS-CoV-2 transmission was the reopening of primary schools on 1 May 2020. We subsequently conducted a prospective cohort study among healthcare workers (HCWs) with primary school-attending children versus HCWs without children living at home. We tested each HCW three times for SARS-CoV-2 from May 20 to June 15 2020 at 1-week intervals. In total, 832 nasopharyngeal swabs were taken from 283 HCWs with primary school-attending children living at home and 864 nasopharyngeal swabs from 285 HCWs without children living at home. All nasopharyngeal swabs tested negative for SARS-CoV-2. In our region with a low population density and low SARS-CoV-2 prevalence, reopening of primary schools did not lead to an increase in infections. The results of this study may serve as an example for the implementation of regional strategies to reduce SARS-CoV-2 transmission in countries with large variations in both population density and SARS-CoV-2 prevalence.

scholarly journals Effect of At-Home Bleaching on Oxygen Saturation Levels in the Dental Pulp of Maxillary Central Incisors

2018 ◽  
Vol 29 (6) ◽  
pp. 541-546 ◽  
Author(s):  
Caroline Solda ◽  
Fernando Branco Barletta ◽  
José Roberto Vanni ◽  
Paula Lambert ◽  
Marcus Vinícius Reis Só ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Pulse Oximeter ◽  
Dental Pulp ◽  
Generalized Estimating Equations ◽  
Carbamide Peroxide ◽  
Baseline Levels ◽  
Student’S T ◽  
Bleaching Treatment ◽  
Student’S T Test ◽  
At Home

Abstract The present study assessed oxygen saturation (SaO2) levels before, during, and after at-home bleaching treatment in the pulps of healthy maxillary central incisors. SaO2 levels were measured in 136 healthy maxillary central incisors using a pulse oximeter. The bleaching protocol consisted of 10% carbamide peroxide gel placed in individual trays and used for four hours daily for 14 days. SaO2 levels were assessed before bleaching (T0), immediately after the first session (T1), on the 7th day of treatment (T2), on the 15th day (the day following the last session) (T3), and 30 days after completion of the bleaching protocol (T4). Data were statistically analyzed using generalized estimating equations (GEE), Student’s t test (p<0.05) and Pearson’s correlation. Mean pulp SaO2 levels were 85.1% at T0, 84.9% at T1, 84.7% at T2, 84.3% at T3, and 85.0% at T4. Gradual reductions in SaO2 levels were observed, with significant differences (p<0.001) during the course of home bleaching treatment. However, 30 days after the end of the bleaching protocol, SaO2 levels returned to baseline levels. Home bleaching caused a reversible transient decrease in SaO2 levels in the pulps.

scholarly journals Effect of thickener agents on dental enamel microhardness submitted to at-home bleaching

2007 ◽  
Vol 21 (2) ◽  
pp. 170-175 ◽  
Author(s):  
José Augusto Rodrigues ◽  
Glauco Paulo Felício Oliveira ◽  
Cristiane Mariote Amaral
Keyword(s):  
Oxidation Reaction ◽  
Artificial Saliva ◽  
Dental Enamel ◽  
Experimental Treatment ◽  
The Other ◽  
Carbamide Peroxide ◽  
Dental Bleaching ◽  
Mineral Loss ◽  
At Home

Dental bleaching occurs due to an oxidation reaction between the bleaching agents and the macromolecules of pigments in the teeth. This reaction is unspecific and the peroxides can also affect the dental matrix causing mineral loss. On the other hand, recent studies have suggested that the thickener agent carbopol can also cause mineral loss. Thus, the objective of this study was to evaluate in vitro the effect of at-home dental bleaching on dental enamel microhardness after the use of bleaching agents with and without carbopol as a thickener agent. Bovine dental slabs with 3 x 3 x 3 mm were obtained, sequentially polished, and randomly divided into 4 groups according to the experimental treatment: G1: 2% carbopol; G2: 10% carbamide peroxide with carbopol; G3: carbowax; G4: 10% carbamide peroxide with poloxamer. Bleaching was performed daily for 4 weeks, immersed in artificial saliva. Enamel microhardness values were obtained before the treatment (T0) and 7 (T1), 14 (T2), 21 (T3), 28 (T4), and 42 (T5) days after the beginning of the treatment. ANOVA and Tukey's test revealed statistically significant differences only for the factor Time (F = 5.48; p < 0.01). All bleaching and thickener agents caused no alterations on the enamel microhardness.

scholarly journals Incidence of home delivery among women living with HIV in Lira, Northern Uganda: a prospective cohort study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Agnes Napyo Kasede ◽  
Thorkild Tylleskär ◽  
David Mukunya ◽  
Josephine Tumuhamye ◽  
Grace Ndeezi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Home Delivery ◽  
Northern Uganda ◽  
Adjusted Risk ◽  
Women Living With Hiv ◽  
Living With Hiv ◽  
At Home

Abstract Background Home delivery has been associated with mother-to-child transmission of HIV and remains high among HIV-infected women. Predictors for home delivery in the context of HIV have not been fully studied and understood in Northern Uganda. We therefore aimed to find out the incidence and risk factors for home delivery among women living with HIV in Lira, Northern Uganda. Methods This prospective cohort study was conducted between August 2018 and January 2020 in Lira district, Northern Uganda. A total of 505 HIV infected women receiving antenatal care at Lira regional referral hospital were enrolled consecutively and followed up at delivery. We used a structured questionnaire to obtain data on exposures which included: socio-demographic, reproductive-related and HIV-related characteristics. Data was analysed using Stata version 14.0 (StataCorp, College Station, Texas, U.S.A.). We estimated adjusted risk ratios using Poisson regression models to ascertain risk factors for the outcome of interest which was home delivery (which is delivering an infant outside a health facility setting under the supervision of a non-health worker). Results The incidence of home delivery among women living with HIV was 6.9% (95%CI: 4.9–9.5%). Single women were more likely to deliver at home (adjusted risk ratio = 4.27, 95%CI: 1.66–11). Women whose labour started in the night (night time onset of labour ARR = 0.39, 95%CI: 0.18–0.86) and those that were adherent to their ART (ARR = 0.33, 95%CI: 0.13–0.86) were less likely to deliver at home. Conclusion Home delivery remains high among women living with HIV especially those that do not have a partner. We recommend intensified counselling on birth planning and preparedness in the context of HIV and PMTCT especially for women who are: separated, divorced, widowed or never married and those that are not adherent to their ART.

scholarly journals Combination of at-home and in-office bleaching techniques: case series

2021 ◽  
Vol 69 ◽  
Author(s):  
Marcela Alvarez FERRETTI ◽  
Matheus KURY ◽  
Beatriz Curvello de MENDONÇA ◽  
Marcelo GIANNINI ◽  
Vanessa CAVALLI ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Case Series ◽  
Tooth Bleaching ◽  
Central Incisor ◽  
Carbamide Peroxide ◽  
Tooth Sensitivity ◽  
Tooth Color ◽  
Shade Guide ◽  
At Home

ABSTRACT Tooth bleaching is one of the most conservative aesthetic techniques. At-home and in-office bleaching may be performed, as well as the combination of both techniques. As this combination may be done in different manners, distinct orders of combinations were proposed in this report. A 24 years-old man, whose upper central incisor and canine shades were A2 and A3 respectively, was initially treated by chair-side with 40-min application of 40% hydrogen peroxide (HP) for two sessions. Afterwards, an two-week overnight at-home bleaching was performed with 10% carbamide peroxide (CP). The shade of upper central incisors changed to 1M1 and canine was B1. Conversely, a 30 years-old woman was firstly conducted with at-home bleaching (overnight 4-weeks 10% CP) and, subsequently, with a single appointment of in-office bleaching for 45 minutes (35% HP). The shade of her upper central incisor changed from A1 to 0.5M1 and the upper canine from A3 to B1. The VITA classical (A1-D4) shade guide and VITA Bleached guide 3D-MASTER were used to determine the tooth color during the treatments. In both bleaching treatments, patients reported no significant tooth sensitivity and the final outcomes met their expectation.

Case Reports of Enamel Microabrasion Associated with At-home Dental Bleaching After Orthodontic Bracket Removal

2021 ◽  
Author(s):  
CC Pavani ◽  
LR Vieira ◽  
TC Schott ◽  
D Sundfeld ◽  
NIP Pini ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Clinical Case ◽  
Case Reports ◽  
Enamel Surface ◽  
Carbamide Peroxide ◽  
Orthodontic Bracket ◽  
Dental Bleaching ◽  
Bonded Materials ◽  
Diamond Bur ◽  
At Home

SUMMARY Adequate removal of residual bonded materials from the enamel surface after orthodontic bracket debonding is critical, since any remaining composite may compromise enamel surface morphology and esthetics. The following clinical case reports present the association of at-home dental bleaching using 10% carbamide peroxide and the removal of residual bonded material using a super fine, tapered diamond bur followed by the use of an enamel microabrasion product after orthodontic bracket debonding. The proposed treatment considerably improved the esthetics and successfully removed the grooves created during the removal of the bonding composite, resulting in a smooth enamel surface.

Chemical Analysis of Enamel and Dentin Following the Application of Three Different At-home Bleaching Systems

2011 ◽  
Vol 36 (5) ◽  
pp. 529-536 ◽  
Author(s):  
FY Cakir ◽  
Y Korkmaz ◽  
E Firat ◽  
SS Oztas ◽  
S Gurgan
Keyword(s):  
Chemical Composition ◽  
Deleterious Effect ◽  
Energy Dispersive Spectrometer ◽  
Carbamide Peroxide ◽  
Anterior Teeth ◽  
Signed Rank ◽  
Dental Hard Tissues ◽  
Hard Tissues ◽  
At Home

SUMMARY Purpose To determine the change in the chemical composition of enamel and dentin as well as to evaluate the differences in surface texture of the same dental hard tissues following three at-home bleaching systems in vitro. Methods Sixty extracted intact human anterior teeth were used in this study. Thirty teeth were used as samples for enamel, and the buccal surfaces of the remaining 30 teeth were abraded and used as dentin samples. Prior to bleaching treatments, calcium (Ca), phosphorus (P), potassium (K), sodium (Na), magnesium (Mg), fluoride (F), and oxygen (O) levels of each sample were measured using an energy dispersive spectrometer. The teeth were then randomly allocated into three groups according to the bleaching system used, as follows: GI, 10% carbamide peroxide (CP); GII, 20% CP; GIII, and 35% CP. Following the bleaching treatments, Ca, P, K, Na, Mg, F, and O measurements were repeated. The surface configurations were examined using scanning electron microscopy (SEM). The data were analyzed using Wilcoxon signed rank and Kruskal-Wallis tests followed by the Dunn test. Results All three bleaching systems tested caused similar changes in the chemical composition of enamel and dentin. Bleaching systems decreased Ca and K, while F and O levels increased in enamel. In dentin, Ca, P, and K levels decreased; however, Na, F, and O levels increased. SEM observations revealed no deleterious effect on enamel and dentin. Conclusion The use of home bleaching agents could affect the chemical composition of dental hard tissues, whereas the change in the chemical composition of enamel and dentin was not affected by the CP concentration of the bleaching systems used.

scholarly journals Effects of Amorphous Calcium Phosphate Administration on Dental Sensitivity during In-Office and At-Home Interventions

2018 ◽  
Vol 6 (4) ◽  
pp. 52 ◽  
Author(s):  
Giacomo Oldoini ◽  
Antonino Bruno ◽  
Anna Genovesi ◽  
Luca Parisi
Keyword(s):  
Hydrogen Peroxide ◽  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Potassium Fluoride ◽  
Tooth Bleaching ◽  
Carbamide Peroxide ◽  
Casein Phosphopeptides ◽  
Group 2 ◽  
Group 1 ◽  
At Home

Background. Tooth bleaching is the most frequently employed whitening procedure in clinics. The major side effect of tooth bleaching is dental sensitivity during and after the treatment. Here, we evaluated whether the administration of amorphous calcium phosphate (ACP), during in-office and at-home procedures may impact on dental sensitivity. Methods. Eighty patients, responding to the study requirements were enrolled according to the following criteria. Group 1 (n = 40), received in-office, 10% ACP prior to 30% professional hydrogen peroxide application. The whitening procedure continued at home using 10% carbamide peroxide with 15% ACP for 15 days. Group 2 (n = 40) received only 30% hydrogen peroxide application and continued the whitening procedures at home, using 10% carbamide hydroxide, without ACP- Casein phosphopeptides (CPP), for 15 days. Dental sensitivity was recorded with a visual analogue scale (VAS) at baseline, immediately after, and at 15 days after treatment in the two groups. Results. We observed that patients receiving ACP in the bleaching mixture experienced decreased dental sensitivity (* p ≤ 0.05), as detected by VAS scale analysis immediately following the procedures. Patients receiving ACP-CPP during at-home procedures showed a statistically significant (*** p ≤ 0.0001) reduction of dental sensitivity. Conclusions. We demonstrated that ACP-CPP administration, while exerting the same whitening effects as in control subjects receiving potassium fluoride (PF), had an impact on the reduction of dental sensitivity, improving patient compliance.

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