O poema//processo de Wlademir Dias-Pino: entre escritura e visualidade

O presente artigo apresenta o movimento do poema//processo, criado pelo poeta mato-grossense Wlademir Dias-Pino em 1967, que envolveu uma série de poetas e artistas e marcou uma passagem importante na história das vanguardas da literatura e da arte brasileiras. A partir dos principais conceitos do movimento, trataremos das imbricações entre poesia e artes visuais utilizando três abordagens inter-relacionadas na poesia de Dias-Pino: a separação entre as ideias de estrutura e de processo; a separação entre as ideias de língua e de linguagem; e a recusa radical à escrita alfabética. Também serão marcados os aspectos que aproximam e que separam o poema//processo da chamada poesia visual e da Poesia Concreta de Haroldo e Augusto de Campos e de Décio Pignatari

KNOWLEDGE AND PERCEPTION OF MOLAR INCISOR HYPOMINERALIZATION AMONG DENTAL PRACTITIONERS IN SANA’A CITY- YEMEN

Background: Molar incisor hypomineralization (MIH) has been recognized as a global dental disorder and concern about this pathology is growing among clinicians around the world. Objectives: This study aimed to investigate the knowledge and perception of Yemeni dental practitioners in the city of Sana'a in relation to diagnosis, etiological factors and management of MIH. Materials and Methods: A questionnaire modified from similar previous studies was distributed to 311 Yemeni dentists providing oral health care in Sana'a city. The survey consists of two parts, the first is the demographic-occupational variables that was collected for the participants and the second part included questions related to perception of the diagnosis, possible etiological factors, severity of the condition and management, and the participants ’willingness for advance training in relation to MIH. Results: The overall response rate is (90%). The majority of respondents came across MIH in their practices (GDPs= 83.2%, SDPs= 90%).Yellow / brown demarcation is feasible as a common clinical symptom. The composite resin was the most used restorative material. The genetic factor was the most specific etiological factor. Most GDPs were significantly uncertain in the diagnosis of MIH compared to SDPs (P = 0.003). Most of the respondents (72.5%) had a low level of knowledge regarding MIH. Participants support the need to assess MIH occurrence and conduct clinical training. Conclusion: Molar incisor hypomineralization (MIH) is a common dental problem faced by dental practitioners in Sana'a City who have required clinical training regarding diagnosis, etiological factors and MIH management.                                Peer Review History: Received: 8 September 2020; Revised: 7 October; Accepted: 20 October, Available online: 15 November 2020 Academic Editor: Dr. Sally A. El-Zahaby, Pharos University in Alexandria, Egypt, [email protected] Received file:                Reviewer's Comments: Average Peer review marks at initial stage: 6.5/10 Average Peer review marks at publication stage: 8.0/10 Reviewer(s) detail: Dr. Mohamed Awad AbdAlaziz Mousnad, International University of Africa (IUA) and Sudan, [email protected] Antonio José de Jesus Evangelista, Federal University of Ceará, UFC, Brazil,  [email protected] Similar Articles: PREVALENCE OF STAPHYLOCOCCUS AUREUS IN DENTAL INFECTIONS AND THE OCCURRENCE OF MRSA IN ISOLATES CAUSES FOR EXTRACTION OF PERMANENT TEETH IN GENERAL DENTAL PRACTICES IN YEMEN SERO-PREVALENCE OF HEPATITIS C VIRUS AMONG DENTAL CLINIC WORKERS IN SANA’A CITY- YEMEN AND THE RISK FACTORS CONTRIBUTING FOR ITS INFECTION PREVALENCE AND CAUSES OF TRAUMATIC DENTAL INJURIES TO ANTERIOR TEETH AMONG PRIMARY SCHOOL CHILDREN IN SANA'A CITY, YEMEN ETIOLOGY AND RISK FACTORS OF STOMATITIS AMONG YEMENI DENTURE WEARER

Associations of the activity and concentration of carbonic anhydrase VI with susceptibility to dental caries: A systematic review and meta‐analysis

Objectives: A number of studies have claimed that carbonic anhydrase VI (CA VI) is associated with dental caries. The aim of this systematic review and meta‐analysis was to systematically review and analyze the literature on the association of CA VI (in terms of concentration and activity) with dental caries. Materials and Methods: A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines. Relevant search terms were employed to search the following databases: PubMed, Web of Science, Scopus, China National Knowledge Infrastructure (CNKI), and Cochrane Library databases. Eligible publications from inception to August 2022 were included. The relevant records were assessed independently by two reviewers, and a meta‐analysis was performed using RevMan 5.3. Results: Out of 237 relevant records from the initial search, 9 met the criteria for this review. The 9 papers, including 477 participants, were qualitatively analyzed. Seven studies with 411 participants (203 caries‐free) were included in the meta‐analysis on CA VI activity, and 2 studies with 141 participants (71 caries‐free) were included in the meta‐analysis on CA VI concentration. The results showed that CA VI activity was significantly higher among participants with caries than their caries‐free counterparts (standardized mean difference (SMD) = 0.894, 95% confidence interval (CI95%): 0.386 and 1.392; p < 0.001), whereas the CA VI concentration was significantly lower among participants with caries than their caries‐free counterparts (SMD = −0.672, CI95%: −1.011 and −0.332; p < 0.001). Conclusions: This meta‐analysis of a relatively small number of studies suggests that the CA VI concentration is lower and CA VI activity is higher in patients with dental caries than in caries‐free individuals; however, further studies are needed to determine the exact role of CA VI in dental caries

Efficacy of lycopene for management of oral potentially malignant disorders: A systematic review and meta-analysis

ObjectiveThe aim of this study was to investigate the available evidence on the efficacy of lycopene in the management of oral potentially malignant disorders (OPMDs). Study DesignPubMed, Scopus, Web of Science, Google Scholar, China National Knowledge Infrastructure, and ProQuest databases were searched up to April 20, 2022. All clinical trials that assessed the efficacy of lycopene (I) on the signs/symptoms (O) of patients with OPMDs (P) in comparison to either active control or placebo (C) were included. Meta-analysis was conducted using the RevMan software (Cochrane Collaboration, London, UK). ResultsA total of 27 clinical trials (20 on oral submucosa fibrosis [OSF], 5 on oral lichen planus [OLP], and 2 on leukoplakia) were included. Overall, lycopene was efficacious in reducing signs and symptoms of OSF, OLP, and leukoplakia. The pooled data revealed comparable efficacy of lycopene and prednisolone in reducing pain and promoting clinical resolution of OLP. Additionally, the pooled data reported comparable efficacy of lycopene and conventional controls in improving the mouth opening and tongue protrusion in patients with OSF. ConclusionsThe results reveal promising effects of lycopene in alleviating signs and symptoms of OSF, OLP, and leukoplakia. However, owing to the observed heterogeneity and short follow-up periods, further well-designed studies with long-term therapy and follow-up are highly recommended

Efficacy of hyaluronic acid for recurrent aphthous stomatitis: a systematic review of clinical trials

Objectives: Recurrent aphthous stomatitis (RAS) is a very common oral mucosal disease, and its management is quite challenging with no definitive cure being available so far. Many studies have tried hyaluronic acid (HA) for alleviating signs and symptoms of RAS. The present systematic review sought to assess the available evidence regarding the efficacy of HA in management of RAS. Methods: Two reviewers independently conducted extensive search in four online databases (PubMed, Scopus, Web of Science, and Google Scholar) and the gray literature, with no restriction to date or language of the publication. All clinical trials that assessed the efficacy of HA in reducing signs and symptoms of RAS were included. Risk of bias was assessed by two reviewers independently, using the Cochrane assessment tool. Due to substantial heterogeneity, no meta-analysis was feasible. Results: Out of the 75 identified articles, nine clinical trials involving 538 RAS patients (259 in HA group) were included. The risk of bias was high in five studies, low in one study, and unclear in three studies. The comparative groups varied greatly across the included studies: triamcinolone (in three studies), chlorhexidine mouthwash, lidocaine, placebo, iodine glycerin, diclofenac, and laser therapy. Overall, the results revealed a good efficacy of HA in alleviating pain and shortening the healing time of RAS, without any reported side effects. Compared to triamcinolone, HA showed superior results in one study, and comparable results in two studies. Conclusions: The available evidence suggests that HA is a promising treatment option for RAS. However, given the huge heterogeneity of the included studies and high risk of bias in some of these studies, the evidence is inconclusive. Further well-designed clinical trials with standardized methodologies and adequate sample sizes are warranted to discern the efficacy of HA for RAS. Clinical relevance: Hyaluronic acid might be a viable alternative therapeutic option for patients with RAS

Oral cancer knowledge, attitudes, and practices among senior dental students in Yemen: a multi-institution study

Background: The "Knowledge, attitude, and practice (KAP)" approach is crucial in health system. Appreciating the current KAP status will reveal the extent of the efficiency of applied health strategies, and subsequently help to determine the appropriate health policy to be employed for improving the health indicators of a given disease/condition, including Oral Cancer (OC). This large-scale cross-sectional study aimed to assess knowledge, attitude, and practice on OC among senior dental students in Yemen. Methods: A pre-validated online questionnaire was used for data collection. It consisted of a series of close-ended questions on knowledge, attitudes and practices related to OC. Yemeni dental students in clinical levels (4th and 5th years) from nine dental schools based in four major cities were invited to complete the survey. The SPSS Version 28.0 was used for data analysis. Differences by different grouping factors were assessed by Chi-squared and Mann Whitney-U tests, as appropriate. Results: A total of 927 students completed the questionnaire: a response rate of 43%. While the majority identified smoking (93.8%), and smokeless tobacco (92.1%) as potential risk factors of OC, only 76.2% recognized sun exposure as a risk factor for lip cancer and only 50% were aware of old age as a risk factor of OC. Regarding clinical signs of OC, 84.1% reported that OC can present as non-healing ulcer, but only two thirds of the participants recognized that OC can present as a white and/or red lesion. With respect to practices, although 92.1% reported asking their patients regarding oral habits, only 78% reported they regularly carry out a soft tissue examination. Only 54.5% of the participants considered themselves to be well-trained to provide smoking cessation advice, and 21% were confident regarding their knowledge on OC. The 5th year students showed significantly better knowledge and practices than the 4th year students did (p < 0.01). Conclusion: The study suggests significant gaps in knowledge, attitudes, and practices of senior dental students in Yemen regarding OC. The findings also underscore the urgent need to improve OC teaching and training of undergraduate dental students, and to provide periodic well-structured continuing professional development activities for dental professionals.The authors would like to express their gratitude to all individuals, who agreed to participate in the study.Scopu

Is the Bacterial Cellulose Membrane Feasible for Osteopromotive Property?

Guided bone regeneration was studied to establish protocols and develop new biomaterials that revealed satisfactory results. The present study aimed to comparatively evaluate the efficiency of the bacterial cellulose membrane (Nanoskin&reg;) and collagen membrane Bio-Gide&reg; in the bone repair of 8-mm critical size defects in rat calvaria. Seventy-two adult male rats were divided into three experimental groups (n = 24): the CG&mdash;membrane-free control group (only blood clot, negative control), BG&mdash;porcine collagen membrane group (Bio-Guide&reg;, positive control), and BC&mdash;bacterial cellulose membrane group (experimental group). The comparison periods were 7, 15, 30, and 60 days postoperatively. Histological, histometric, and immunohistochemical analyses were performed. The quantitative data were subjected to 2-way ANOVA and Tukey&rsquo;s post-test, and p &lt; 0.05 was considered significant. At 30 and 60 days postoperatively, the BG group showed more healing of the surgical wound than the other groups, with a high amount of newly formed bone (p &lt; 0.001), while the BC group showed mature connective tissue filling the defect. The inflammatory cell count at postoperative days 7 and 15 was higher in the BC group than in the BG group (Tukey&rsquo;s test, p = 0.006). At postoperative days 30 and 60, the area of new bone formed was greater in the BG group than in the other groups (p &lt; 0.001). Immunohistochemical analysis showed moderate and intense immunolabeling of osteocalcin and osteopontin at postoperative day 60 in the BG and BC groups. Thus, despite the promising application of the BC membrane in soft-tissue repair, it did not induce bone repair in rat calvaria