The effect of immersion disinfection procedures on dimensional stability of two elastomeric impression materials

The aim of this study was to determine the effect of immersion disinfection procedures on the dimensional stability of two elastomeric impression materials. Impressions of a stainless steel die were made with polyether (PE) and with additionpolymerized silicone rubber (PVS). The test specimens underwent disinfection treatment by immersion in two commercially available solutions containing quaternary ammonium compounds (Sterigum Powder, SP) and glutaraldehyde plus an amino derivative (MD520, MD), respectively. The impressions were measured at 4 different time points: before any disinfection treatment (T0); after the first disinfection (T1); 6 hours after the first disinfection (T2); after the second disinfection, carried out 6 hours after the first one (T3). Impressions which were not disinfected served as controls. When both impression materials were disinfected with SP, significant differences were detected among all measurements (P < 0.0001), with the exception of T2 vs T3 (P > 0.05). On the other hand, when MD was used, significant differences were found when T0 measurement was compared to T1, T2 and T3 measurements (P = 0.0043 for PE, and P = 0.0014 for PVS). The dimensional change of all material/disinfectant combinations was always ≤0.5%. Therefore, the effects of immersion disinfection on the dimension of elastomers in SP or MD are not clinically relevan

Challenges in Dental Statistics: Survey Methodology Topics

This paper gathers some contributions concerning survey methodology in dental research, as discussed during the first Workshop of the SISMEC STATDENT working group on statistical methods and applications in dentistry, held in Ancona on the 28th September 2011. The first contribution deals with the European Global Oral Health Indicators Development (EGOHID) Project which proposed a comprehensive and standardized system of epidemiological tools (questionnaires and clinical forms) for national data collection on oral health in Europe. The second contribution regards the design and conduct of trials to evaluate the clinical efficacy and safety of toothbrushes and mouthrinses. Finally, a flexible and effective tool used to trace dental age reference charts tailored to Italian children was presented

Knowledge and attitudes towards smoking cessation counselling: an Italian cross-sectional survey on tertiary care nursing staff

Background: One of the most effective smoking cessation strategies involves care and advice from nurses due to their role in the front line of treatment. Lack of education on smoking cessation counselling may be detrimental, and adequate smoking cessation training during healthcare studies is needed. Objectives: The study aimed to examine nurses’ attitudes, belief, and knowledge of smoking cessation counselling; knowledge of the health risks associated with smoking was also assessed. Design: A cross-sectional survey on 77 nurses from the nursing staff of Cardiology, Cardiac Intensive Care and Surgical Oncology Units of two tertiary hospitals. Methods: Cronbach’s alpha was calculated to assess the questionnaire’s internal consistency, and three composite indicators were computed to assess the three dimensions of the questionnaire (knowledge, attitude, belief). Furthermore, a stepwise linear regression model was used to predict the attitude to be engaged in smoking cessation counselling, related to demographic and behavioural variables, as well as knowledge and belief indicators. The analysis was stratified by Unit. Results: Nurses from three Units had a significantly different attitude score (2.55 ± 0.93 for Cardiology, 2.49 ± 0.72 for Cardiac Intensive Care and 2.09 ± 0.59 for Surgical Oncology Unit) (P-value = 0.0493). Analogously, knowledge of smoking cessation counselling was reported to be higher for Cardiac Intensive Care Unit nurses (3.19 ± 0.70) compared to Surgical Oncology nurses (2.73 ± 0.74) (P-value = 0.021). At the multivariable analysis, attitude towards smoking cessation counselling was significantly related to the nurse’s belief about counselling, for Cardiology staff (coeff = 0.74, 95% CI [0.32–1.16], P-value = 0.002) and for Surgical Oncology staff (coeff = 0.37, 95% CI [0.01–0.72], P-value = 0.042). Conclusions: Incorporation of smoking cessation interventions in nurses’ and nursing managers’ education could improve the nursing staff’s attitude, belief, and knowledge regarding smoking cessation counselling, which would lead to the inclusion of tobacco prevention and cessation as an integral part of patient care

Challenges in dental statistics: survey methodology topics

This paper gathers some contributions concerning survey methodology in dental research, as discussed during the first Workshop of the SISMEC STATDENT working group on statistical methods and applications in dentistry, held in Ancona on the 28th September 2011. The first contribution deals with the European Global Oral Health Indicators Development (EGOHID) Project which proposed a comprehensive and standardized system of epidemiological tools (questionnaires and clinical forms) for national data collection on oral health in Europe. The second contribution regards the design and conduct of trials to evaluate the clinical efficacy and safety of toothbrushes and mouthrinses. Finally, a flexible and effective tool used to trace dental age reference charts tailored to Italian children is presented

Primary and Secondary Tumors of the Parotid Gland: Clinical Features and Prognosis

Primary and secondary malignant tumors can affect the parotid gland. The aim of this retrospective study was to evaluate the clinical features and prognosis of malignant epithelial tumors of the parotid gland. In particular, a comparison between primary and secondary cancer and survival analyses were performed. Eighteen patients with primary cancer and fifteen with intraparotid metastasis from cutaneous squamous cell carcinoma were included. A chart review was performed to collect clinical data (age, sex, smoking, alcohol consumption, tumor stage, type of surgical procedure, complications, recurrence and death). The majority of primary tumors were early (T1-2 N0, 83%) with mucoepidermoid carcinoma being the most common (33%). Secondary tumors were mostly staged P2 (53%) and N0 (67%). Subjects with secondary tumors were older than those with primary cancer. Post-operative permanent facial palsy was observed in 5 patients (17%) with primary cancer and 9 (60%) with secondary tumors (p = 0.010). Two-year overall survival for primary and secondary parotid cancer was 76.58% and 43.51%, respectively (p = 0.048), while 2-year disease-free survival was 76.05% and 38.50%, respectively (p = 0.152). In conclusion, secondary cancer of the parotid gland has worse survival than primary tumors. In the future, the implementation of multimodality treatment of intraparotid metastases is necessary to improve oncologic outcomes

Caries Severity, Decayed First Permanent Molars and Associated Factors in 6-7 Years Old Schoolchildren Living in Palermo (Southern Italy).

To date, there are very few epidemiologic studies on caries disease in 6-7 year old children living in Sicily (Southern Italy). The first permanent molar (FPM) is the most commonly affected tooth in this target population, and a one-unit increase in the number of decayed FPMs is predictive of caries in other teeth and in adulthood. The primary aim of this research is to estimate the prevalence of caries in 6-7 year old schoolchildren living in Palermo and, as a secondary aim, to estimate the prevalence of affected FPMs. It was designed as a cluster cross-sectional survey on 995 children from 16 schools, selected based on their geographical location, in one of the eight city districts. Caries data were recorded using the International Caries Detection and Assessment System for each tooth surface. The relation between socio-economic status, behavioural determinants, and clinical information and the number of teeth with initial caries (IC), moderate caries (MC), or extensive caries (SC) was analysed through the ordinal logistic regression. Among the 995 schoolchildren, 662 (66.5%) had at least one lesion and 742 (74.6%) had FPMs. Of the latter, 238 (32.0%) were affected by IC, 86 (11.6%) were affected by MC, and only 3 (0.4%) were affected by SC. During multivariable analysis, there was evidence of an increased risk of MC and SC related to the deprivation of the district in which the children lived and went to school, as well as to the protective role of parental education and employment. The same significant determinants were found for IC and MC FPMs. The study showed the important role of socio-economic determinants, unhealthy behaviours, and social deprivation related to the increased risk of moderate and extensive caries in 6-7 year old schoolchildren. Investigating this target population is very important, as early development of caries in FPMs may have serious consequences in the prognostics of oral health in an adult

Towards a genealogy of critical urban studies

Urban Studie

Sottotraccia. Note per una genealogia degli studi urbani critici

Urban Studie

Growth and Osteogenic Differentiation of Discarded Gingiva-Derived Mesenchymal Stem Cells on a Commercial Scaffold

Background: In periodontal patients with jawbone resorption, the autologous bone graft is considered a “gold standard” procedure for the placing of dental prosthesis; however, this procedure is a costly intervention and poses the risk of clinical complications. Thanks to the use of adult mesenchymal stem cells, smart biomaterials, and active biomolecules, regenerative medicine and bone tissue engineering represent a valid alternative to the traditional procedures. Aims: In the past, mesenchymal stem cells isolated from periodontally compromised gingiva were considered a biological waste and discarded during surgical procedures. Conclusion: Matriderm represents a biocompatible scaffold able to support the in vitro cell growth and osteodifferentiation ability of gingival mesenchymal stem cells isolated from waste gingiva, and could be employed to develop low-cost and painless strategy of autologous bone tissue regeneration. This study aims to test the osteoconductive activity of FISIOGRAFT Bone Granular and Matriderm collagen scaffolds on mesenchymal stem cells isolated from periodontally compromised gingiva as a low-cost and painless strategy of autologous bone tissue regeneration. Materials and Methods: We isolated human mesenchymal stem cells from 22 healthy and 26 periodontally compromised gingival biopsy tissues and confirmed the stem cell phenotype by doubling time assay, colony-forming unit assay, and expression of surface and nuclear mesenchymal stem cell markers, respectively by cytofluorimetry and realtime quantitative PCR. Healthy and periodontally compromised gingival mesenchymal stem cells were seeded on FISIOGRAFT Bone GranularR and MatridermR scaffolds, and in vitro cell viability and bone differentiation were then evaluated. Results: Even though preliminary, the results demonstrate that FISIOGRAFT Bone GranularR is not suitable for in vitro growth and osteogenic differentiation of healthy and periodontally compromised mesenchymal stem cells, which, instead, are able to grow, homogeneously distribute, and bone differentiate in the MatridermR collagen scaffold

Lifestyle medicine and psychological well-being toward health promotion: a cross-sectional study on Palermo (Southern Italy) undergraduates

(1) Aim: To assess the attitude toward Lifestyle Medicine and healthy behaviours among students in the healthcare area and to demonstrate its association to psychological well-being; (2) Methods: A cross-sectional study is conducted among 508 undergraduates of the University of Palermo (140 (27.6%) in the healthcare area and 368 (72.4%) in the non-healthcare area), during the academic year 2018–2019. Psychological well-being is measured through two dimensions of eudaimonia and hedonia, using the 10-item Hedonic and Eudaimonic Motives for Activities-Revised (HEMA-R) scale, with answers coded on a 7-point scale. The association between demographic and modifiable behavioural risk factors for chronic diseases is assessed through crude and adjusted Odds ratios with 95% confidence intervals; (3) Results: Orientation to both hedonia and eudaimonia is significantly associated to the Mediterranean diet (ORAdj = 2.28; 95% CI = (1.42–3.70)) and drinking spirits less than once a week (ORAdj = 1.89; 95% CI = (1.10–3.27)) and once a week or more (ORAdj = 6.02; 95% CI = (1.05–34.52)), while these conditions occur together less frequently for current smokers (ORAdj = 0.38; 95% CI = (0.18–0.81)). Students inclined to well-being consider healthcare professionals as models for their patients and all people in general (OR = 1.96, 95% CI = (1.28–3.00)); (4) Conclusions: The positive relation found between a virtuous lifestyle and psychological well-being suggests the construction, development and cultivation of individual skills are a means to succeed in counteracting at risk behaviours for health