386 research outputs found

    An In Vitro Evaluation of Leakage of Two Etch and Rinse and Two Self-Etch Adhesives after Thermocycling

    Get PDF
    Our experiment evaluated the microleakage in resin composite restorations bonded to dental tissues with different adhesive systems. 40 class V cavities were prepared on the facial and lingual surfaces of each tooth with coronal margins in enamel and apical margins in cementum (root dentin). The teeth were restored with Z100 resin composite bonded with different adhesive systems: Scotchbond Multipurpose (SBMP), a 3-step Etch and Rinse adhesive, Adper Scotchbond 1 XT (SB1), a 2-step Etch and Rinse adhesive, AdheSE One (ADSE-1), a 1-step Self-Etch adhesive, and AdheSE (ADSE), a 2-step Self-Etch adhesive. Teeth were thermocycled and immersed in 50% silver nitrate solution. When both interfaces were considered, SBMP has exhibited significantly less microleakage than other adhesive systems (resp., for SB1, ADSE-1 and ADSE, P = 0.0007, P < 0.0001 and P < 0.0001). When enamel and dentin interfaces were evaluated separately, (1) for the Self-Etch adhesives, microleakage was found greater at enamel than at dentin interfaces (for ADSE, P = 0.024 and for ADSE-1, P < 0.0001); (2) for the Etch and Rinse adhesive systems, there was no significant difference between enamel and dentin interfaces; (3) SBMP was found significantly better than other adhesives both at enamel and dentin interfaces. In our experiment Etch and Rinse adhesives remain better than Self-Etch adhesives at enamel interface. In addition, there was no statistical difference between 1-step (ADSE-1) and 2-step (ADSE) Self-Etch adhesives

    Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

    Get PDF
    This study was designed to evaluate microleakage that appeared on Resin-Modified Glass-Ionomer Cement (RMGIC) restorations. Sixty class V cavities (h × w × l = 2 mm × 2 mm × 3 mm) were cut on thirty extracted third molars, which were randomly allocated to three experimental groups. All the buccal cavities were pretreated with polyacrylic acid, whereas the lingual cavities were treated with three one-step Self-Etch adhesives, respectively, Xeno III (Dentsply Detrey GmbH, Konstanz, Germany), iBond exp (Heraeus Kulzer gmbH & Co. KG, Hanau, Germany), and Adper Prompt-L-Pop (3M ESPE AG, Dental products Seefeld, Germany). All cavities were completely filled with RMGIC, teeth were thermocycled for 800 cycles, and leakage was evaluated. Results were expressed as means ± standard deviations (SDs). Microleakage scores were analysed by means of generalized linear mixed models (GLMMs) assuming an ordinal logistic link function. All results were considered to be significant at the 5% critical level (P < .05). The results showed that bonding RMGIC to dentin with a Self-Etch adhesive rather than using polyacrylic acid did not influence microleakage scores (P = .091), except for one tested Self-Etch adhesive, namely, Xeno III (P < .0001). Nevertheless, our results did not show any significant difference between the three tested Self-Etch adhesive systems. In conclusion, the pretreatment of dentin with Self-Etch adhesive system, before RMGIC filling, seems to be an alternative to the conventional Dentin Conditioner for the clinicians as suggested by our results (thermocycling) and others (microtensile tests)

    A new method to evaluate the part of stress in pain: injection of dextrose 5% (neural prolotherapy) on acupuncture points corresonponding to stellate, coeliac and mesenteric ganglions. A pilot study

    Full text link
    In neuralgia (neuropathic pain), the skin rolling test is painful (allodynia to pinch) but when painful everywhere on the body (polyneuralgia) it often indicates that the patient is in a stress state, in a fight or flight situation. Thus, when starting a treatment, it is important to differentiate between these patients and those who have perineal pain only. The aim of this study was to evaluate the effect on pain and stress of a neural prolotherapy treatment (dextrose 5% injections) at seven acupuncture points linked with orthosympathetic ganglia. The studied population comprised 55 patients treated in two private clinical settings (authors 1 and 2). The short-term effect on pain was studied by comparing the pain induced by the arm skin rolling test before and 15 minutes after injections. To evaluate the long term effect on pain, the average level of body pain during the two weeks preceding the treatment was compared with that following treatment. The World Health Organization (WHO) Five Well-Being Index was used to evaluate the patient’s level of stress before and two weeks after injections. Fifteen minutes after dextrose injections, pain induced by the skin rolling test at the arm was decreased (-3.0 ± 1.6; p<0.0001). Two weeks after treatment, the global body pain score was significantly reduced (-2.0 ± 2.4; p<0.0001) and the total WHO score increased (+21.0 ± 20.5; p<0.0001). Treatment of polyneuralgic patients with neural prolotherapy of seven acupuncture points significantly improves well-being sensation and reduces pain

    Adherence to Sars-CoV2 vaccination in hematological patients.

    Full text link
    peer reviewed[en] BACKGROUND: SARS-CoV2 vaccination efficiently prevents severe COVID-19, although hematological patients, particularly under therapy, respond less well. Besides vaccine efficacy, adherence to vaccination is essential for ensuring adequate protection of this vulnerable population. METHODS: We evaluated the impact of a program aimed at maximizing patient adherence by comparing the rate of SARS-CoV2 vaccination of our hematological patients and a matched sample of the general population. RESULTS: Vaccination rates were 88.9% among 2,156 patients, aged 65.2 ± 15.8 years (M ± SD, range 19-86 years). Rates differed considerably with age, i.e. 84.2% between 18-64 years and 92.4% above 65 years (p<0.0001), but not with sex. In the general population, rates were 76.3% overall, 73.0% between 18-64 and 86.7% above 65 years, all significantly lower than among patients, overall (Standardized Incidence ratio (SIR) 1.17; 95%CI 1.12-1.22, p<0.0001) as well as among younger (SIR 1.15; 1.07-1.24, p<0.0001) or older (SIR 1.06; 1.00-1.13, p=0.046) people. Vaccination rates increased to 92.2% overall (SIR 1.21; 1.16-1.27, p<0.0001), 88.5% in younger (SIR 1.21; 1.13-1.30, p<0.0001) and 94.8% in older (SIR 1.09; 1.03-1.12, p=0.0043) patients, after excluding those with medical contraindications, and further to 95.6% overall (SIR 1.26; 1.20-1.32, p<0.0001), 93.8% in younger (SIR 1.29; 1.20-1.38, p<0.0001) and 96.9% in older (SIR 1.11; 1.05-1.18, p=0.0004) patients, after excluding those not seen in hematology in 2021. CONCLUSIONS: Vaccination rates were significantly higher in hematological patients compared to the general population regardless of age, sex and municipality. Acceptance of Covid vaccines by hematological patients may be improved by targeted information campaigns carried out by trusted health care professionals

    Predicting probing depth reduction after periodontal non-surgical treatment in smokers according to the nicotine dependence and the number of cigarette consumed.

    Full text link
    peer reviewed[en] Introduction: Smoking is considered as a risk factor for the poor outcomes after periodontitis non-surgical treatment (PNST). The aim of this short communication is to predict probing depth reduction after periodontal non-surgical treatment in smokers according to the nicotine dependence (FTND) and the number of cigarette consumed (NCC). Methods: This work is a post-hoc study of a prospective controlled study on the effect of oral hygiene instructions and PNST on periodontal outcomes. This short communication focused only on the current conventional smokers (N = 34), based on specific smoking indicators, and on probing depth (PD) parameter that were recorded at baseline (time 0), after oral hygiene instruction (time 1) and 3 months after PNST (time 2). Results: The 34 smokers had a mean age 46.5 ± 11.5 years. The NCC- and FTND-based predictions allowed to show in a specific nomogram the PD values 3 months after PNST for each NCC and FTND category. Conclusion: Two nomograms are proposed for prognostic purposes and allow patients to understand the impact of smoking on periodontitis according to the number of cigarette consumed and the level of nicotine dependence. These nomograms might be also used for supporting smoking cessation. Clinical significance: In smoker patients with periodontitis, there is a need to predict, for both patient and clinicians, the impact of the number of cigarettes consumed and the level of nicotine dependence on probing depth after oral hygiene instructions and debridement. Two nomograms are proposed for prognostic purposes

    Risk Factors associated with frequent exacerbations in asthma

    Full text link
    peer reviewedBackground: Asthma is a chronic airway inflammatory disease with various degrees of severity. Exacerbations are commonly seen in uncontrolled asthma and their treatment involves oral corticosteroids use with a lot of side effects. Objective: The aim of the study was to identify easily available predictors for future exacerbations in patients with asthma. Methods: This is a prospective study on 250 consecutive patients with asthma with a successful sputum induction. Exacerbation rate in the following year was assessed by telephone interview. Logistic regression was used to test the relationship between the binary outcomes (<1 or ≥1 exacerbation, <2 or ≥2 exacerbations) and a set of covariates including demographic, clinical, functional and inflammatory characteristics such as FeNO, sputum and blood cell counts. The results were then applied and validated in a new cohort of 1450 patients. Results: Sputum and blood eosinophils were able to identify patients presenting ≥1 or ≥2 exacerbations with the same discriminative power (AUC:0.65 and 0.64 respectively). The multiple regression analysis identified that exacerbations in the previous year (OR = 9.3), treatment with high doses ICS (OR = 27.1), blood eosinophils (cells/mm3, OR = 1.8) and FEV1/FVC (OR = 0.93) were independent predictors of exacerbations in the year following the visit with an AUC of 0.93 for this model. Frequent exacerbations (≥2) were also predicted by exacerbations in the previous year (OR = 10.5), treatment with high doses ICS (OR = 39.2) and blood eosinophils (OR = 3.5) with an AUC of 0.95 for the model. Conclusion: Blood and sputum eosinophils have similar predictive value for future exacerbations. Prediction could be improved by combining this information with lung function, ICS dose and history of previous exacerbations
    corecore