1,721,060 research outputs found
Il controllo delle infezioni nella pratica ortodontica. Razionalizzazione di un protocollo operativo.
No full textClinical evaluation of a novel liquid tooth whitening gel
No full textPurpose : To clinically evaluate a new system for at-home tooth whitening (Colgate Simply-White Whitening Gel), by comparing tooth color improvement and adverse event incidence after 14-days treatment. Materials and Methods: 22 subjects (aged 21-46 years) were enrolled into the study. Tooth color and safety assessments were conducted at baseline and following a 2-week at-home treatment. Efficacy was assessed using VITA shade scores. Safety evaluations were performed including the examination of plaque index (PI), bleeding index (BOP), gingival recession and dentin hypersensitivity. Statistical analysis was performed to determine the mean change from baseline. Results: The new whitening gel releasing 5.9% hydrogen peroxide was significantly effective in lightening tooth shade. After only 2 weeks, patients enrolled in the study exhibited an overall mean 3.56-shade improvement from baseline, far superior than minimum values established in ADA Guidelines for the acceptance of peroxide-containing oral hygiene products. Periodontal health (PI and BOP) improved with time overall. Dentin hypersensitivity slightly increased, but it was very well tolerated. No patient discontinued study participation due to such an adverse event. Therefore, it was concluded that the new Colgate Simply White Clear Whitening Gel provided clinically proven, safe and effective at home tooth whitening
Valutazione in vitro della microdurezza dello smalto dopo utilizzo di un nuovo dentifricio
No full textInfection through sprays in medical devices for dentistry. A controllable epidemiological impact.
No full textThe risk of infections via dental sprays has been confirmed once again by the detection, inside dental unit waterlines, of bacterial and viral contaminations, both from water supplies and from the oral cavity of patients. Conventional means of prevention, flushing of the ducts before any dental treatment and anti-retraction devices intended to avoid contamination originating from the patient, evaluated in laboratory and clinical conditions, have been shown to be ineffective in controlling the risk. Tests carried out in vitro, with circuit models, and with the dental unit in service, have confirmed the efficacy of a method to disinfect the waterlines with a disinfecting solution based on TAED and Peroxidant, which in aqueous solution develop peracetic ions (Autosteril method). Zero bacterial count, zero viral charge and a complete biofilm demolition were achieved both in lab conditions and in service units. After hygienic treatment, the same disinfection method, once installed on old units that had been in service for years and without any hygienic device, allowed us to restore and to maintain the microbiological quality of the irrigant also in dental units of old design, and significantly reduced biofilm formation inside the waterlines. Therefore, on the basis of scientific findings, a microbiologic monitoring protocol is proposed in order to verify the hygienic conditions of units which are in service
Urolitiasi in corso di infezione da HIV: revisione della letteratura.
No full textL'eccesso di pazienti in condizioni dismetaboliche trattati con ATV/r può rappresentare un challenging bias che comporta un maggior rischio di urolitiasi
Life cycle assessment and cost analysis of an innovative automatic system for sorting municipal solid waste: A case study at Milan Malpensa airport
Full text linkWith the recent advancement in artificial intelligence, there are new opportunities to adopt smart technologies for the sorting of materials at the beginning of the recycling value chain. An automatic bin capable of sorting the waste among paper, plastic, glass & aluminium, and residual waste was installed in public areas of Milan Malpensa airport, a context where the separate collection is challenging. First, the airport waste composition was assessed, together with the efficiency of the manual sorting performed by passengers among the conventional bins: paper, plastic, glass & aluminium, and residual waste. Then, the environmental (via the life cycle assessment - LCA) and the economic performances of the current system were compared to those of a system in which the sorting is performed by the automatic bin. Three scenarios were evaluated: i) all waste from public areas, despite being separately collected, is sent to incineration with energy recovery, due to the inadequate separation quality (S0); ii) recyclable fractions are sent to recycling according to the actual level of impurities in the bags (S0R); iii) fractions are sorted by the automatic bin and sent to recycling (S1). According to the results, the current separate collection shows a 62 % classification accuracy. Focusing on LCA, S0 causes an additional burden of 12.4 mPt (milli points) per tonne of waste. By contrast, S0R shows a benefit (-26.4 mPt/t) and S1 allows for a further 33 % increase of benefits. Moreover, the cost analysis indicates potential savings of 24.3 /t in S1, when compared to S0
The challenge of severe acute respiratory syndrome (SARS) in dentistry.
No full textSevere Acute Respiratory Syndrome (SARS) is caused by a newly identified coronavirus, called SARS-associated coronavirus (SARS-CoV) that appears to be transmitted primarily through droplets of saliva. This is the reason why the most important international organizations recommend that the dentists adopt a unique preventive approach to the problem: SARS patients should not be treated in the dental office. This is possible only if a suspected case of SARS is correctly and promptly identified. But a correct identification is made difficult by several factors, such as the incubation period, a possibly asymptomatic onset of the illness, the still low specificity and sensitivity of laboratory and instrumental tests. A case or suspected case of SARS may thus unwillingly be treated at the dental office. It is therefore necessary to adopt protective measures for the dental personnel and to implement and enforce infection control measures in order to eliminate the risk of viral contamination. Nonetheless, these procedures do not ensure a complete elimination of SARS-CoV contamination risk since a major risk is represented by blood-borne infection, which is originated by the mouth of patients, and the contamination of dental units water lines (DUWLs) is most difficult to control. Blood-borne contamination may be achieved only by adopting a high level, between-patients disinfection protocol of the DUWLs based on the use of chemical agents with biocidal activity against spores, viruses, bacteria and fungi (Autosteril method). In conclusion a fully effective control of the cross-infection risk will be obtained only by adopting a correct, integrated use of different infection control procedures
Il controllo delle infezioni nella pratica ortodontica: Principi di prevenzione. Dossier
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