Portal de Periódicos Eletrônicos Científicos (UNICAMP)
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Factors associated with the survival rate of 4,556 dental implants –a practice-based multicenter retrospective cohort study
Get PDFAim: the objective of the study was to evaluate the influence of systemic and local factors as implant and prosthesis characteristics on the survival rate of dental implants through a practice-based multicenter retrospective cohort study. Methods: the sample consisted of 1417 patient records, with 4556 implants placed. Dental records were analyzed considering patients who received dental implants in a period up to 20 years. The complete loss (removal) of the implant was considered a failure. Cox proportional-hazards models were used to evaluate the influence of variables (systemic - age, sex, smoking; local – arch region, previously failed site; implant - shape, length, diameter, thread form, insertion torque; prosthesis - load type, prosthodontics type) on the condition of failed implant. The Backward stepwise selection was then performed based on the probability of the Wald statistic. The measure of effect was the hazard rate (HR). Results: a total of 144 implants were lost by the patients (3.2%). The survival rate of the dental implants was 96.8% in a mean time of 5 years. For both Backward stepwise and Enter method, variables that negatively influenced the survival of dental implants were higher total medications (HR=1.511), male sex (HR=1.733), posterior (HR=1.903) and anterior (HR=1.991) maxillary region, previously failed site (HR=3.012), short length (HR=1.742), immediate load (HR=1.896), and overdenture rehabilitation (HR=15.761). Higher survival rate was observed for anterior mandibular region (HR=0.245) and medium (regular) diameter implants (HR=0.450). Age, total diseases, smoking, implant shape, thread form and torque variables did not influence the models. Conclusion: it was possible to conclude that either systemic and local patient factors or implant and prosthesis characteristics influence the survival of dental implants.
Anxiety, depression, stress, and fear of COVID-19 in parents and caregivers of children with non-syndromic oral clefts: case-control study
Get PDFAim: to assess the levels of anxiety, depression, stress, and fear of COVID-19 among parents and caregivers of children with nonsyndromic cleft lip and/or palate (NSCL/P). Methods: cross-sectional, case-control study at a Craniofacial Anomalies Rehabilitation Center, Brazil. Non-probabilistic convenience sampling was used and data were collected between October 2021 and November 2022. Variables were assessed by Depression, Anxiety and Stress Scale (DASS-21) and Fear of COVID-19 Scale (FC-19S). Pearson’s chi-square test and multivariate binary logistic regression model have been performed. Results: data were obtained of 80 NSCL/P parents group and 130 by control group. Severe symptoms were higher in NSCL/P parents indicated by rates (8.8% vs 6.9% to anxiety; 12.5% vs 8.5% to depression and 17.5% vs 10.0% to stress). As for the predilection in case group there was an association (p<0.05) for manifestation of mild stress (OR: 4.09; 95%CI 1.28-13.06). Levels of fear of COVID-19 were higher in control group (43.8% vs 28.7% p<0.05). Conclusions:.a higher prevalence of anxiety, depression and stress extremely severe was observed in parents of children with NSCL/P. Control group was associated with higher fear of COVID-19
Experimental resininfiltrant with antibacterialactivity and ionic release: in-vitro study
Get PDFObjective: To assess the influence of the combination of the antibacterial monomer dimethylaminohexadecyl methacrylate (DMAHDM) and amorphous calcium phosphate nanoparticles (NACP) on the antibacterial and ion release potentials, as well as the physical properties of experimental resin infiltrants. Methodology: The study comprised the following groups: ERI (Pure Experimental Resin Infiltrant [ERI]: 75% TEGDMA + 25% BisEMA, 0.5% camphorquinone [CQ], and 1% ethyl 4-dimethylaminobenzoate [EDMAB]); ERIDM (ERI + 3% DMAHDM), ERINACP (ERI + 1.5% NACP), and ERIDM_NACP (ERI + 3% DMAHDM + 1.5% NACP). From samples of each group, Degree of Conversion (DC; n=6) and Sorption and Solubility (SO/SOL; n=8) were assessed. The antibacterial potential was evaluated through biomass accumulation (BA; n=6) and bacterial metabolism (BM; n=6) assays after cultivating Streptococcus mutans biofilm on the materials. Ionic release (IR; n=3) of Ca2+ and PO4 (3-) from the groups after 7, 14, and 28 days of immersion was also analyzed. Data were analyzed for normality and homoscedasticity, and statistical analysis was performed using appropriate tests with a significance level of 5%. Results: For DC, ERIDM showed no statistical difference from ERI. ERI had the lowest means of SO/SOL, and ERIDM_NACP had the highest. ERIDM exhibited no statistical difference from ERI. For BM, ERIDM and ERIDM_ NACP had the lowest means. ERINACP and ERIDM_NACP exhibited ionic release during the analyzed period. Conclusions: The resin infiltrant containing DMAHDM and NACP exhibits potent antibacterial activity against S. mutans and Ca2+ and PO4 (3-) ionic release.
Gender determinationusing maxillary sinusparameters and distanceof mental foramen fromlower border of mandible: a cone beam computedtomography analysis inNepalese subpopulation
Get PDFAim: To assess the reliability of morphometric measurements performed on the maxillary sinus and the distance of mental foramen from the lower border of mandible for gender determination by cone beam computed tomography (CBCT). Materials and Methods: A total of 390 CBCT images were included in this study. The length, width and height of the maxillary sinus and the distance from the superior and inferior border of the mental foramen to the lower border of mandible were assessed. All the measured parameter data was then subjected to discriminative statistical analysis and analyzed using unpaired t-test. P-value ≤0.05 was considered as significant. Logistic regression analysis was done to determine which measures were more predictive of sexual dimorphism. Discrimination values were determined by receiver operating characteristic curve analysis, thus generating area under the curve (AUC) values, which ranged from 50% (very weak) to 100% (very strong). Results: The overall values of the maxillary sinus dimensions were significantly greater (p ≤ 0.05) in males as compared to females except right maxillary sinus length and left maxillary sinus width (p =0.162). The distances from the superior and inferior border of mental foramen to lower border of mandible were significantly greater (p ≤ 0.05) in males as compared to females. The accuracy of the maxillary sinus and the mental foramen for gender identification was found to be 65.5% and 73.8% respectively. Conclusion: CBCT measurement of the maxillary sinus and distance from the mental foramen to the lower border of the mandible can be used as a supplementary tool for gender determination in forensic anthropology
Stress and minor mentaldisorders in undergraduatedental students: a cross-sectional study
Get PDFThis study aimed to analyze the occurrence of stress and minor mental disorders (MMD) among dental students. Participants included students in the pre-clinical stage (N=123) and clinical stage (N=169) of the dental program. Data collection was carried out using sociodemographic data, Dental Environmental Stress (DES) and Self-Reporting Questionnaire (SRQ-20) to evaluate the minor mental disorders (DMM). Analysis was conducted using the Mann-Whitney test, Fisher’s exact test, and logistic regression with a significance level of 5%. The overall mean for stressors was 2.7, indicating a range between “Mildly Stressful” and “Moderately Stressful,” with higher levels observed in the clinical stage (2.8) and among women (2.9). The main stressors were “Exams and grades” (pre-clinical - 3.7, clinical - 3.9; p=0.0314), “Fear of failing a subject or losing the year” (pre-clinical - 3.6, clinical - 3.7; p=0.7596), “Completing graduation requirements” (pre-clinical - 3.4, clinical - 3.6; p=0.1092), and “Lack of time for relaxation or leisure” (pre-clinical - 3.3, clinical - 3.6; p=0.0037). The overall prevalence of MMD was 78.5%, with higher rates observed in the clinical stage (82.2%) and among women (81.6%). Of the variables in the regression analysis, two remained significant: “Difficulties at work” (p=0.001) and “Loss of interest in things” (p=0.033). The environment experienced by the participants in this study presents stressors, with a high prevalence of suspected MMD among female students in both stages of the dental program
Clinicopathological features of granulomatous inflammatory lesions: a 69-year retrospective study
Get PDFAim: To evaluate the clinicopathological features of granulomatous inflammatory lesions through a retrospective analysis, emphasizing the importance of early and accurate diagnosis for timely treatment and improved prognosis. Methods: A retrospective cross-sectional study analyzed archived data (1953–2022) approved by the Research Ethics Committee (CAAE: 5.429.194). Samples with clinical and histological diagnoses of granulomatous lesions, nonspecific chronic inflammations, paracoccidioidomycosis, leishmaniasis, and tuberculosis were included. Initially, 88 cases were identified, and 28 cases met inclusion criteria after exclusions. Results: Granulomatous lesions predominantly presented as irregular ulcers (67.9%), located mainly on the tongue (32.1%), erythematous (46.4%), and symptomatic (50.0%). Histologically, lymphocytes and macrophages were present in all cases, while Langhans-type and foreign body-type giant cells appeared in 69%, and caseous necrosis was observed in 32%. Conclusions: Biopsy is essential for diagnosing oral lesions. Understanding the prevalence and clinicopathological features of granulomatous inflammatory lesions is critical for developing preventive measures and effective treatment strategies which directly influences the individual’s prognosis, particularly considering the potential burden of these diseases.
Influence of stainless-steel orthodontic brackets on the tomographic planning of dental implants: an ex vivo study
No full textAim: This ex vivo study aimed to assess the influence of stainless-steel orthodontic brackets (SSOB) and the acquisition protocol on linear measurements of bone height and width for the planning of dental implants in inter-bracket regions. Methods: Twenty extracted premolar teeth were adapted in artificial sockets on 10 bovine ribs, then adapted into a 3D printed jaw, coated with wax. Cone beam computed tomography (CBCT) scans with and without SSOB were performed using four acquisition protocols, varying the voxel size (280, 200, 125, and 80 μm). Three trained examiners evaluated all 80 CBCT scans, measuring height and width in the center of the simulated edentulous region between the teeth, in the cross-sectional plane. Intra- and inter-examiner reproducibility were assessed using the Intraclass Correlation Coefficient test. Linear measurements were compared using the Bland-Altman method and ANOVA for repeated measures. A significance level of 5% was used. Results: Intra- and inter-examiner reproducibility presented excellent reliability for height measurements, while inter-examiner presented moderate and intra-examiner presented moderate to good reliability. The measurements showed a statistically significant difference between the examiners (p<0.001), regardless of the voxel size or the presence of SSOB. The Bland-Altman showed discrepancies between -0.18 mm and 1.15 mm in the width measurements. Conclusion: The presence of SSOB and the CBCT voxel size do not affect the planning of dental implants in the inter-bracket region
Continuity and rupture in the use of clay for the production of ceramic artifacts in the Mogiana landscape
No full textThe cultural landscape reflects human interventions in the natural environment, highlighting collective identities, values and memories. The territory, as a dynamic space, is continually modified, revealing the social, political and economic relationships that structure it and incorporating meanings attributed by human groups. Cultural practices such as agriculture, pottery and architecture shape the landscape, influenced by the physical characteristics of the place. Clay on the banks of the Mogi Guaçu River has become an essential element in the relationship between inhabitant and habitat. Although the technique has been disrupted, archaeological remains and architectural remnants indicate the continued use of the material. Mogiana ceramics, evidenced by artifacts dating back 1,500 years, demonstrate the tradition of clay manufacture, which was lost with industrial development. Coffee-growing, the railroads and industrialization brought back the use of clay in construction, and the potteries evolved into ceramics industries, transforming architecture and boosting the local economy. This article analyzes the continuity and rupture of Mogiana ceramics, considering the traces that reveal the relationship between natural resources and material production. It looks at two cycles of emergence, expansion and decline, which impacted the landscape, local identity and collective memory, based on historical documents, industrial records, archaeological analysis and photographic surveys.A paisagem cultural reflete as intervenções humanas no ambiente natural, evidenciando identidades, valores e memórias coletivas. O território, como espaço dinâmico, é continuamente modificado, revelando as relações sociais, políticas e econômicas que o estruturam e incorporando significados atribuídos pelos grupos humanos. Práticas culturais como agricultura, cerâmica e arquitetura moldam a paisagem, influenciadas pelas características físicas do local. A argila nas margens do Rio Mogi Guaçu se tornou um elemento essencial na relação entre habitante e habitat. Embora a técnica tenha sofrido rupturas, vestígios arqueológicos e remanescentes arquitetônicos indicam a continuidade do uso do material. A cerâmica mogiana, evidenciada por artefatos de 1.500 anos, demonstra a tradição de manufatura em argila, que se perdeu com o desenvolvimento industrial. A cafeicultura, a ferrovia e a industrialização retomaram o uso da argila na construção civil, e as olarias evoluíram para indústrias cerâmicas, transformando a arquitetura e impulsionando a economia local. Este artigo analisa a continuidade e ruptura da cerâmica mogiana, considerando os vestígios que revelam a relação entre recursos naturais e produção material. São abordados dois ciclos de surgimento, expansão e declínio, que impactaram a paisagem, a identidade local e a memória coletiva, com base em documentos históricos, registros industriais, análise arqueológica e levantamento fotográfico.A paisagem cultural reflete as intervenções humanas no ambiente natural, evidenciando identidades, valores e memórias coletivas. O território, como espaço dinâmico, é continuamente modificado, revelando as relações sociais, políticas e econômicas que o estruturam e incorporando significados atribuídos pelos grupos humanos. Práticas culturais como agricultura, cerâmica e arquitetura moldam a paisagem, influenciadas pelas características físicas do local. A argila nas margens do Rio Mogi Guaçu se tornou um elemento essencial na relação entre habitante e habitat. Embora a técnica tenha sofrido rupturas, vestígios arqueológicos e remanescentes arquitetônicos indicam a continuidade do uso do material. A cerâmica mogiana, evidenciada por artefatos de 1.500 anos, demonstra a tradição de manufatura em argila, que se perdeu com o desenvolvimento industrial. A cafeicultura, a ferrovia e a industrialização retomaram o uso da argila na construção civil, e as olarias evoluíram para indústrias cerâmicas, transformando a arquitetura e impulsionando a economia local. Este artigo analisa a continuidade e ruptura da cerâmica mogiana, considerando os vestígios que revelam a relação entre recursos naturais e produção material. São abordados dois ciclos de surgimento, expansão e declínio, que impactaram a paisagem, a identidade local e a memória coletiva, com base em documentos históricos, registros industriais, análise arqueológica e levantamento fotográfico
Earthen architecture and urban sustainability: insights from professionals across Ibero-America
No full textEarthen construction has emerged as a strategic alternative for urban sustainability in Ibero-America, standing out for its use of local materials, low environmental impact, thermal comfort, and the valorization of vernacular knowledge. This study investigated the perceptions of construction professionals from Ibero-American countries to identify the benefits, challenges, and strategies for expanding the use of this technique. A mixed-methods approach was employed, combining questionnaires and interviews conducted with members of the Proterra, Terra Brasil, and Protierra Argentina networks, with data analyzed using IRAMUTEQ software. The findings revealed strong recognition of the technique’s advantages, including energy efficiency, reduced carbon footprint, and cultural relevance. However, significant barriers were identified, such as the absence of technical standards, market resistance, social stigma, lack of professional training, and insufficient public policy support. Semantic analysis identified four key thematic axes: environmental impact, use of local materials, health and comfort, and technical sustainability. Concrete proposals include the development of specific technical standards, integration of earthen construction into academic curricula, establishment of experimental labs in universities, implementation of tax incentives and credit lines, and the inclusion of the technique in master plans, housing programs, and public demonstration projects. It is concluded that earthen construction holds strong potential to support more equitable, resilient, and sustainable cities in line with SDG 11.A construção com terra tem emergido como alternativa estratégica para a sustentabilidade urbana na Ibero-América, destacando-se pelo uso de materiais locais, baixo impacto ambiental, conforto térmico e valorização de saberes vernaculares. Esta pesquisa investigou as percepções de profissionais do setor da construção civil em países ibero-americanos, com o objetivo de identificar os benefícios, entraves e estratégias para ampliação do uso da técnica. A metodologia mista incluiu questionários e entrevistas aplicados a membros das redes Proterra, Terra Brasil e Protierra Argentina, analisados com o apoio do software IRAMUTEQ. Os resultados revelaram forte reconhecimento da técnica em relação à eficiência energética, redução da pegada de carbono e relevância cultural, mas também evidenciaram entraves como a ausência de normativas, resistência do mercado, estigmas sociais, falta de formação técnica e escassez de políticas públicas. A análise semântica apontou quatro eixos estruturantes: impacto ambiental, uso de materiais locais, saúde e conforto, e sustentabilidade técnica. Como propostas concretas, destaca-se a criação de normas técnicas específicas, a inclusão da temática nos currículos acadêmicos, a implantação de canteiros experimentais, incentivos fiscais e linhas de crédito, além da integração da técnica aos planos diretores, políticas habitacionais e obras públicas exemplares. Conclui-se que a construção com terra possui elevado potencial para estruturar cidades mais justas, resilientes e alinhadas ao ODS 11.A construção com terra tem emergido como alternativa estratégica para a sustentabilidade urbana na Ibero-América, destacando-se pelo uso de materiais locais, baixo impacto ambiental, conforto térmico e valorização de saberes vernaculares. Esta pesquisa investigou as percepções de profissionais do setor da construção civil em países ibero-americanos, com o objetivo de identificar os benefícios, entraves e estratégias para ampliação do uso da técnica. A metodologia mista incluiu questionários e entrevistas aplicados a membros das redes Proterra, Terra Brasil e Protierra Argentina, analisados com o apoio do software IRAMUTEQ. Os resultados revelaram forte reconhecimento da técnica em relação à eficiência energética, redução da pegada de carbono e relevância cultural, mas também evidenciaram entraves como a ausência de normativas, resistência do mercado, estigmas sociais, falta de formação técnica e escassez de políticas públicas. A análise semântica apontou quatro eixos estruturantes: impacto ambiental, uso de materiais locais, saúde e conforto, e sustentabilidade técnica. Como propostas concretas, destaca-se a criação de normas técnicas específicas, a inclusão da temática nos currículos acadêmicos, a implantação de canteiros experimentais, incentivos fiscais e linhas de crédito, além da integração da técnica aos planos diretores, políticas habitacionais e obras públicas exemplares. Conclui-se que a construção com terra possui elevado potencial para estruturar cidades mais justas, resilientes e alinhadas ao ODS 1
Política Habitacional e favelização em Bauru (SP)
No full textO artigo aborda a trajetória da COHAB-Bauru e a evolução da favelização nesse município no período recente, através de estudo quantitativo da produção habitacional e da análise qualitativa da precariedade habitacional e urbanística. Apesar da intensa provisão habitacional nos períodos de atuação da COHAB-Bauru, a favelização não só persistiu como aumentou, evidenciando a inadequação e a insuficiência de políticas habitacionais restritas à produção de moradias, as quais contribuem para a descontínua expansão da malha urbana e a fragmentação socioespacial.The article addresses the trajectory of COHAB-Bauru and the evolution of slum formation in this municipality in the recent period, through a quantitative study of housing production and a qualitative analysis of housing and urban precariousness. Despite the intense housing provision during the periods of COHAB-Bauru's operation, slum formation not only persisted but increased, evidencing the inadequacy and insufficiency of housing policies restricted to housing production, which contribute to the discontinuous expansion of the urban fabric and the socio-spatial fragmentation.O artigo aborda a trajetória da COHAB-Bauru e a evolução da favelização nesse município no período recente, através de estudo quantitativo da produção habitacional e da análise qualitativa da precariedade habitacional e urbanística. Apesar da intensa provisão habitacional nos períodos de atuação da COHAB-Bauru, a favelização não só persistiu como aumentou, evidenciando a inadequação e a insuficiência de políticas habitacionais restritas à produção de moradias, as quais contribuem para a descontínua expansão da malha urbana e a fragmentação socioespacial