OncoTherad® (MRB-CFI-1) Nanoimmunotherapy: A Promising Strategy to Treat Bacillus Calmette-Guérin-Unresponsive Non-Muscle-Invasive Bladder Cancer: Crosstalk among T-Cell CX3CR1, Immune Checkpoints, and the Toll-Like Receptor 4 Signaling Pathway.

This study assessed the safety and efficacy of OncoTherad® (MRB-CFI-1) nanoimmunotherapy for non-muscle invasive bladder cancer (NMIBC) patients unresponsive to Bacillus Calmette-Guérin (BCG) and explored its mechanisms of action in a bladder cancer microenvironment. A single-arm phase I/II study was conducted with 44 patients with NMIBC who were unresponsive to BCG treatment. Primary outcomes were pathological complete response (pCR) and relapse-free survival (RFS). Secondary outcomes comprised response duration and therapy safety. Patients' mean age was 65 years; 59.1% of them were refractory, 31.8% relapsed, and 9.1% were intolerant to BCG. Moreover, the pCR rate after 24 months reached 72.7% (95% CI), whereas the mean RFS reached 21.4 months. Mean response duration in the pCR group was 14.3 months. No patient developed muscle-invasive or metastatic disease during treatment. Treatment-related adverse events occurred in 77.3% of patients, mostly grade 1-2 events. OncoTherad® activated the innate immune system through toll-like receptor 4, leading to increased interferon signaling. This activation played a crucial role in activating CX3CR1+ CD8 T cells, decreasing immune checkpoint molecules, and reversing immunosuppression in the bladder microenvironment. OncoTherad® has proved to be a safe and effective therapeutic option for patients with BCG-unresponsive NMIBC, besides showing likely advantages in tumor relapse prevention processes.

Effects of infrared light laser therapy on in vivo and in vitro periodontitis models.

BACKGROUND: This study evaluated the effects of infrared light laser therapy (ILLT) on ligature-induced periodontitis in rats using micro-computed tomography (micro-CT), histology, fibroblast migration, and viability analysis. METHODS: Forty-eight rats were randomly distributed into three groups: control (no periodontitis), PDC (periodontitis without laser therapy), and PD+L (periodontitis with laser therapy). Periodontitis was induced by ligature placement for 4 weeks. The 12-week-old rats (baseline) were subjected to laser treatment and euthanized 30 days after. After treatment, the mandibular first molars were prepared for micro-CT scanning, and histological sections were assessed as to the cementoenamel junction, alveolar bone crest, and polymorphonuclear (PMN) cell infiltration. In vitro assays were carried out to examine NIH/3T3 fibroblast viability after laser therapy. RESULTS: Migration and cell viability assays revealed that the ILLT maintained fibroblast cell viability with 4 J/cm2 , reaching 100% healing. The control group (at baseline and 30 days) presented a statistically significant difference from the PDC group at 30 days in terms of distance from the cementoenamel junction to the alveolar bone crest (CEJ-ABC). The PD+L group showed a statistically substantial difference from the PDC group at 30 days in terms of trabecular thickness (Tb.Th), degree of anisotropy (DA), and closed porosity percentage (Po%). CONCLUSION: ILLT seemed to preserve the bone structure in the in vivo periodontitis induction model at 30 days and did not reduce cell viability or increase fibroblast migration in vitro. The ILLT provides positive effects on mandibular bone microstructure.

Endo-perio lesions prevalence in non-molar and molar teeth: a pilot study / Prevalência de lesões endo-perio em dentes não-molares e molares: um estudo piloto

Introduction Pulp and periodontal tissues may communicate and, in pathological situations, combined endodontic-periodontal lesions may be established. Objective The aim of this study was to evaluate the prevalence of endo-perio lesions in non-molar and molar teeth referred for endodontic treatment. Material and method The sample consisted of 104 teeth evaluated in 79 consecutive patients in a cross-sectional design. Visible plaque, probing depth, and bleeding on probing were evaluated. Endodontic evaluation included the presence or absence of caries, fistulas, pain, and pulp sensitivity. The presence/absence of periapical lesion, bone loss in the furcation region, and proximal area were evaluated. Result The results showed that pain was the main reason for seeking dental care in 63.3% of patients. The molar teeth demonstrated higher presence of probing depth (PD) ≥ 7 mm (38.3%) and higher PD mean (6.17 mm) than non-molar teeth (P<0.05). It was verified that 65.4% of the teeth were diagnosed with a primary endodontic lesion and that the periodontal component was present in 34.6% of the teeth, either in a primary (10.6%), secondary (11.5%), or combined form (12.5%). True combined endodontic-periodontal lesion occurred significantly in molar teeth compared to non-molar teeth (p<0.05). Conclusion The primary endodontic lesion was found in a greater proportion in teeth referred for endodontic treatment; however, approximately 1/3 of the sample had periodontal involvement, which demonstrates the importance of the periodontal examination together with the general clinical examination.

Introdução Os tecidos pulpar e periodontal podem se comunicar e, em situações patológicas, podem-se estabelecer lesões endodônticas-periodontais combinadas. Objetivo O objetivo deste estudo foi avaliar a prevalência de lesões endo-perio em dentes não molares e molares encaminhados para tratamento endodôntico. Material e método A amostra consistiu de 104 dentes avaliados em 79 pacientes consecutivos em um desenho transversal. Placa visível, profundidade de sondagem e sangramento à sondagem foram avaliados. A avaliação endodôntica incluiu a presença ou ausência de cáries, fístulas, dor e sensibilidade pulpar. Foram avaliados a presença / ausência de lesão periapical, perda óssea em região de furca e área proximal. Resultado Os resultados mostraram que a dor foi o principal motivo de procura de atendimento odontológico em 63,3% dos pacientes. Os dentes molares demonstraram maior presença de profundidade de sondagem (PS) ≥ 7 mm (38,3%) e maior média de PS (6,17 mm) do que os dentes não molares (P <0,05). Verificou-se que 65,4% dos dentes tinham diagnóstico de lesão endodôntica primária e que o componente periodontal estava presente em 34,6% dos dentes, seja na forma primária (10,6%), secundária (11,5%) ou combinada (12,5%). Lesão endodôntica-periodontal combinada verdadeira ocorreu significativamente em dentes molares em comparação com os dentes não molares (p <0,05). Conclusão A lesão endodôntica primária foi encontrada em maior proporção nos dentes encaminhados para tratamento endodôntico; entretanto, aproximadamente 1/3 da amostra apresentava acometimento periodontal, o que demonstra a importância do exame periodontal em conjunto com o exame clínico geral.

Evaluation of periodontal indices in young adults submitted to chlorhexidine 0. 12% mouthwash: a randomized clinical trial / Avalização dos índices periodontais em adultos jovens submetidos a enxaguatório bucal a 0, 12% de clorexidina: um ensaio clínico randomizado

Introduction Gingivitis is a gingival inflammation which can often be treated with oral hygiene such as brushing, flossing, and an antiseptic mouthwash. Objective The aim of this randomized clinical trial was to clinically evaluate the effectiveness of 0.12% chlorhexidine (CHX) solution as an anti-inflammatory agent and for reducing the presence of plaque and inflammation in young adults. Material and method Thirty patients with gingivitis aged 18 to 30 years with a probing depth ≤ 3 mm and a minimum of 20 teeth in the whole mouth were selected and evaluated at baseline and 30 days after treatment. Periodontal clinical parameters were verified: plaque index (PI), gingival index (GI), Simplified Oral Hygiene Index (OHI-S), Simplified Debris Index (DI-S), and Simplified Calculus Index (CI-S) Patients were then randomly allocated into two groups: CHX Group, received chlorhexidine 0.12% labeled as solution 1, and Placebo Group, received saline solution labeled as solution 2. Both groups were included in a hygiene program and received mouthwash. Result Statistically significant differences between CHX and Placebo groups were observed for the variables PI, GI, DI-S, CI-S, and OHI-S (p<0.05 - Paired T Test) after 30 days. The CHX group presented improved GI compared to Placebo at 30 days. Chlorhexidine 0.12% was efficient in the control of periodontium inflammation. Conclusion It can be concluded that chlorhexidine as a mouthwash is efficient in improving periodontal indices in young adults, but it is still controversial whether age can influence GI and OHI-S.

Introdução A gengivite é uma inflamação gengival que geralmente pode ser tratada com higiene oral, como escovação, uso do fio dental e um anti-séptico bucal. Objetivo O objetivo deste ensaio clínico randomizado foi avaliar clinicamente a eficácia da solução de clorexidina 0,12% (CHX) como um agente antiinflamatório e na redução da presença de placa e inflamação em adultos jovens. Material e método Trinta pacientes com gengivite com idade entre 18 e 30 anos com profundidade de sondagem ≤ 3 mm com mínimo de 20 dentes em toda a boca foram selecionados e avaliados no início do estudo e 30 dias após o tratamento. Foram verificados os parâmetros clínicos periodontais: índice de placa (IP), índice gengival (GI), Índice de Higiene Oral Simplificado (IHO-S), Índice de Debris Simplificado (DI-S) e Índice de Cálculo Simplificado (IC-S). A seguir, os pacientes foram alocados aleatoriamente em dois grupos: Grupo CHX, recebeu clorexidina 0,12% previamente identificada como solução 1 e grupo placebo, recebeu solução salina identificada como solução 2. Ambos os grupos foram incluídos em programa de higiene e receberam enxaguatório bucal. Resultado Diferença estatisticamente significante entre os grupos CHX e Placebo foi observada para as variáveis ​​PI, GI, DI-S, CI-S e OHI-S (p <0,05 - Teste T Pareado) após 30 dias. O grupo CHX melhorou a resposta ao GI em comparação ao placebo em 30 dias. Clorexidina 0,12% foi eficiente no controle da inflamação do periodonto. Conclusão Pode-se concluir que a eficácia da clorexidina como enxaguatório bucal na melhora dos índices periodontais foi confirmada em adultos jovens, mas ainda é controverso que a idade pode influenciar o IG e IHO-S.

Estudo in vitro e in vivo de sondas periodontais do tipo Williams disponíveis no mercado brasileiro / In vitro and in vivo study of Williams-type periodontal probes available in the Brazilian market

Resumo Introdução A sonda periodontal é a melhor ferramenta para o diagnóstico clínico da doença periodontal, porém o desenho da sonda pode influenciar nos resultados. Objetivo Avaliar as características estruturais de sondas periodontais do tipo Williams disponíveis no mercado brasileiro e avaliar sua utilização clínica durante a sondagem periodontal. Material e método Os grupos de sondas foram divididos em: 1) Hu-Friedy® (n = 15); 2) Trinity® (n = 15); 3) Fava® (n = 15); 4) Millennium® (n = 15). Foram avaliados in vitro: peso (g), diâmetro da ponta ativa (mm), diâmetro do cabo (mm) e milimetragem das sondas (mm). Para o estudo in vivo, foram selecionados 10 participantes que apresentavam pelo menos quatro dentes com periodontite. As marcas de sondas foram codificadas em A, B, C e D para o cegamento do examinador. Resultado Verificou-se um diâmetro da ponta ativa sugestivo de forma tridimensional cônica para as marcas Trinity®, Hu-Friedy® e Millennium®, com conicidade crescente, enquanto a marca Fava® revelou forma tridimensional cilíndrico/paralelo. A sonda Fava® apresentou os maiores diâmetros nos terços inicial e médio, enquanto a Hu-Friedy® revelou menor diâmetro no terço inicial. Todas as sondas apresentaram milimetragem similar. No estudo clínico, verificou-se que a sonda Fava® resultou em menor média de profundidade de sondagem do que às demais. Conclusão As sondas periodontais apresentam diferenças estruturais que devem ser consideradas durante a seleção do instrumento, sendo que as sondas cônicas apresentam resultados mais confiáveis à prática clínica, pois o desenho da sonda interfere diretamente no diagnóstico clínico da doença periodontal.

Abstract Introduction The periodontal probe is the best tool for the clinical diagnosis of periodontal disease; however the probe design can influence the results. Objective To evaluate the structural characteristics of Williams-type periodontal probes available in the Brazilian market and evaluate their clinical use during periodontal probing. Material and method The probe groups were divided into: 1) Hu-Friedy® (n=15); 2) Trinity® (n=15); 3) Fava® (n=15); 4) Millennium® (n=15). In vitro analyzes were performed: weight (g), diameter of the active tip (mm), cable diameter (mm) and millimeter of the probes (mm). For the in vivo study, 10 participants were selected who had at least four teeth with periodontitis. The probe marks were coded in A, B, C and D for the examiner's blinding. Result There was a diameter of the active tip suggestive of a conical three-dimensional shape for the Trinity®, Hu-Friedy® and Millennium®, with increasing taper, while the Fava® tip demonstrated a suggestive diameter of a cylindrical / parallel three-dimensional shape. The Fava® probe showed the largest diameters in the initial and middle thirds, while the Hu-Friedy® revealed the smallest diameter in the initial third. All the probes presented similar milimeter. In the clinical study, it was found that the Fava® probe resulted in a lower average of probing depth than the others. Conclusion Periodontal probes have structural differences that must be considered during the selection of the instrument, and the conical probes present more reliable results to clinical practice, since the design of the probe directly interferes with the clinical diagnosis of periodontal disease.

Frequency of Porphyromonas gingivalis fimA in smokers and nonsmokers after periodontal therapy.

Porphyromonas gingivalis is one of the most important Gram-negative anaerobe bacteria involved in the pathogenesis of periodontitis. P. gingivalis has an arsenal of specialized virulence factors that contribute to its pathogenicity. Among them, fimbriae play a role in the initial attachment and organization of biofilms. Different genotypes of fimA have been related to length of fimbriae and pathogenicity of the bacterium. OBJECTIVES: The aim of this study was to identify 5 types of fimA genotype strains in smokers and nonsmokers with periodontitis, before and after periodontal therapy. MATERIAL AND METHODS: Thirty-one patients with periodontitis harboring P. gingivalis were selected: 16 nonsmokers (NS) and 15 smokers (SM). Clinical and microbiological parameters were evaluated at baseline and 3 months after periodontal treatment, namely: plaque index, bleeding on probe, probing depth, gingival recession and clinical attachment level. The frequency of P. gingivalis and fimA genotype strains were determined by polymerase chain reaction. RESULTS: Type I fimA was detected in the majority of SM and NS at baseline, and the frequency did not diminish after 3 months of treatment. The frequency of type II genotype was higher in SM than NS at baseline. After 3 months, statistical reduction was observed only for types II and V fimA genotypes in SM. The highest association was found between types I and II at baseline for NS (37.5%) and SM (53.3%). CONCLUSION: The most prevalent P. gingivalis fimA genotypes detected in periodontal and smoker patients were genotypes I and II. However, the presence of fimA genotype II was higher in SM. Periodontal treatment was effective in controlling periodontal disease and reducing type II and V P. gingivalis fimA.

Frequency of Porphyromonas gingivalis fimA in smokers and nonsmokers after periodontal therapy

Abstract Porphyromonas gingivalis is one of the most important Gram-negative anaerobe bacteria involved in the pathogenesis of periodontitis. P. gingivalis has an arsenal of specialized virulence factors that contribute to its pathogenicity. Among them, fimbriae play a role in the initial attachment and organization of biofilms. Different genotypes of fimA have been related to length of fimbriae and pathogenicity of the bacterium. Objectives The aim of this study was to identify 5 types of fimA genotype strains in smokers and nonsmokers with periodontitis, before and after periodontal therapy. Material and Methods Thirty-one patients with periodontitis harboring P. gingivalis were selected: 16 nonsmokers (NS) and 15 smokers (SM). Clinical and microbiological parameters were evaluated at baseline and 3 months after periodontal treatment, namely: plaque index, bleeding on probe, probing depth, gingival recession and clinical attachment level. The frequency of P. gingivalis and fimA genotype strains were determined by polymerase chain reaction. Results Type I fimA was detected in the majority of SM and NS at baseline, and the frequency did not diminish after 3 months of treatment. The frequency of type II genotype was higher in SM than NS at baseline. After 3 months, statistical reduction was observed only for types II and V fimA genotypes in SM. The highest association was found between types I and II at baseline for NS (37.5%) and SM (53.3%). Conclusion The most prevalent P. gingivalis fimA genotypes detected in periodontal and smoker patients were genotypes I and II. However, the presence of fimA genotype II was higher in SM. Periodontal treatment was effective in controlling periodontal disease and reducing type II and V P. gingivalis fimA.

Determination of the Influence of Chronic Periodontitis on Pulp Sensibility by Means of Electric and Thermal Cold Testing.

INTRODUCTION: Communication between pulp and periodontal tissue has been well established. However, it is unknown when periodontal disease begins to affect the clinical response of pulp tissue. The aim of this study was to assess the influence of periodontal severity on pulp sensibility by means of electric and thermal cold testing. METHODS: The teeth assessed in this study were allocated into 3 groups considering radiographic alveolar bone loss (ABL) as follows: slight periodontitis (SP, ABL ≤7 mm without reaching the apex, n = 25), moderate periodontitis (ABL >7 mm without reaching the apex, n = 23), and severe periodontitis (SvP, ABL >7 reaching the apex, n = 8). Gingival recession (GR), probing depth (PD), and clinical attachment level (CAL) were also measured. RESULTS: The results showed higher levels of PD and CAL in the SvP group compared with the SP group (P < .05), with no significant difference in GR (P > .05). The SvP group showed significant ABL compared with the other groups (P > .05). The SP group showed a significant number of teeth with a positive pulp response, whereas the SvP group showed a significant number of teeth with a negative pulp response (P < .05); no significant differences were observed between the thermal cold and electric tests (P > .05). CONCLUSIONS: Within the limits of this study, it can be concluded that pulp clinical involvement with a negative response to thermal cold and electric testing occurs only in the most advanced stage of chronic periodontitis with apical involvement.

Fibroma osificante periférico de establecimiento precoz: reporte de un caso / Early onset peripheral ossifying fibroma: Presentation of a case

RESUMEN: El fibroma osificante periférico (FOP) es una hipertrofia benigna de los tejidos. Se localiza en la región de la papila interdental, proveniente de células que derivan del ligamento periodontal. Generalmente mide menos de 1,5cm de diámetro, siendo muy raro en recién nacidos. El objetivo de la presentación de este caso clínico es describir un caso de FOP en un bebé de 6 meses de edad. La niña presentaba una lesión nodular localizada en la mucosa gingival, en el área de incisivos inferiores, de aproximadamente 1,5cm diámetro, de consistencia firme, lisa, y coloración igual a la de la mucosa subyacente. Un diente neonatal había sido removido a los 2 meses de nacida. El FOP es una lesión poco común y que raramente puede encontrarse en bebés menores de un año de edad; por este motivo es importante realizar el diagnóstico adecuado, para evitar cualquier complicación debido a su establecimiento precoz y rápido crecimiento.

ABSTRACT: The peripheral ossifying fibroma (POF) is a rare, reactive and inflammatory gingival overgrowth, arising on the interdental papilla, from cells derived of the periodontal ligament. Usually its diameter is less than 1.5 cm. It's uncommon in newborns, frequently occurring in teenagers and young adult. The purpose of this report is to describe a case of FOP in a six months old baby. She had a nodular lesion, located on the gingival mucosa of the lower incisor area, of approximately 1.5 cm; it was firm, smooth, pedunculated, with an equal color of the underlying mucosa. A neonatal tooth had been removed four months back. Although FOP is a rare injury, it can be found in infants with less than one year of age, which is why it is important to make the right diagnosis, and an opportune treatment, to avoid further complications due to its early establishment and rapid growth.

Investigations of the prevalence and virulence of Candida albicans in periodontal and endodontic lesions in diabetic and normoglycemic patients.

OBJECTIVE: The aim of this study was to investigate the prevalence of isolated Candida albicans from periodontal endodontic lesions in diabetic and normoglycemic patients, and the fungi's virulence in different atmospheric conditions. MATERIAL AND METHODS: A case-control study was conducted on 15 patients with type 2 diabetes mellitus (G1) and 15 non-diabetics (G2) with periodontal endodontic lesions. Samples of root canals and periodontal pockets were plated on CHROMagar for later identification by polymerase chain reaction (PCR) and virulence test. RESULTS: C. albicans was identified in 79.2% and 20.8% of the 60 samples collected from diabetic and normoglycemic patients, respectively. Of the 30 samples collected from periodontal pockets, 13 showed a positive culture for C. albicans, with 77% belonging to G1 and 23% to G2. Of the 11 positive samples from root canals, 82% were from G1 and 18% from G2. Production of proteinase presented a precipitation zone Pz<0.63 of 100% in G1 and 72% in G2, in redox and negative (Pz=1), under anaerobic conditions in both groups. Hydrophobicity of the strains from G1 indicated 16.4% with low, 19.3% with moderate, and 64.3% with high hydrophobicity in redox. In G2, 42.2% had low, 39.8% had moderate, 18% had high hydrophobicity in redox. In anaerobic conditions, G1 showed 15.2% with low, 12.8% with moderate, and 72% with high hydrophobicity; in G2, 33.6% had low, 28.8% had moderate, and 37.6% had high hydrophobicity. There was statistical difference in the number of positive cultures between G1 and G2 (p<0.05) with predominance in G1. There was statistical difference for all virulence factors, except hemolysis (p=0.001). CONCLUSIONS: Candida albicans was isolated more frequently and had higher virulence in diabetic patients.

Raman spectral characteristics of neck and head of femur in low-density lipoprotein receptor gene knockout mice submitted to treadmill aerobic training.

Hypercholesterolemia is associated with deterioration of bone tissue. Trough Raman spectroscopy, the present study aimed to assess the molecular changes in terms of mineral and organic bone-tissue remodeling in low-density lipoprotein receptor gene knockout mice (LDLr-/-) submitted to treadmill aerobic training. In order to evaluate alterations in trabecular bone and cartilage surface, neck and head femoral were assessed into four groups: (CON, n=7), the 1) animals did not perform any physical activity and had hypercholesterolemia (CON, n=7); The trained groups where animals underwent a protocols of low, moderate and high training for 8weeks and 4 times per week on a treadmill with progressive intensities: running speed (8-13m/min) and time of exercise (20-60min). These progressive intensities were needed to adjust the working load for the physical training to 2) 30-49% (LOW, n=7), 3) 50-79% (MOD, n=7), and 4) 80-100% (HIGH, n=7) of the maximum running speed. Each group was examined for molecular changes in both bone phases (mineral and organic) using principal components analysis (PCA). All exercised groups showed a significant increase (p<0.05) of bone remodeling in trabecular area and a higher content of proteins (organic content) in cartilage independently of physical activity intensity. Thus, this work demonstrated that physical training could act as a bone-protector factor in hyperlipidemic animal model as well as Raman technique associated with PCA analysis may be feasible methodology for assessment or monitoring of bone at the molecular level.

Surgeons' Performance Determining the Amount of Graft Material for Sinus Floor Augmentation Using Tomography

Abstract This study aimed to assess the performance of surgeons in determining the amount of graft material required for maxillary sinus floor augmentation in a preoperative analysis using cone-beam computed tomography images. A convenience sample of 10 retrospective CBCT exams (i-CAT®) was selected. Scans of the posterior maxilla area with an absence of at least one tooth and residual alveolar bone with an up to 5 mm height were used. Templates (n=20) contained images of representative cross-sections in multiplanar view. Ten expert surgeons voluntarily participated as appraisers of the templates for grafting surgical planning of a 10 mm long implant. Appraisers could choose a better amount of graft material using scores: 0) when considered grafting unnecessary, 1) for 0.25 g in graft material, 2) for 0.50 g, 3) for 1.00 g and 4) for 1.50 g or more. Reliability of the response pattern was analyzed using Cronbach's a. Wilcoxon and Mann-Whitney tests were performed to compare scores. Regression analysis was performed to evaluate whether the volume of sinuses (mm3) influenced the choose of scores. In the reliability analysis, all values were low and the score distribution was independent of the volume of the maxillary sinuses (p>0.05), which did not influence choosing the amount of graft material. Surgeons were unreliable to determine the best amount of graft material for the maxillary sinus floor augmentation using only CBCT images. Surgeons require auxiliary diagnostic tools to measure the volume associated to CBCT exams in order to perform better.

Resumo O objetivo deste estudo foi avaliar o desempenho dos cirurgiões na determinação da quantidade de material de enxerto necessária para a elevação do assoalho do seio maxilar em uma análise pré-operatória, utilizando imagens de tomografia computadorizada de feixe cônico. Foi selecionada uma amostra de conveniência de 10 exames retrospectivos CBCT (i-CAT®). Os exames foram da área da maxila posterior que possuíam ausência de pelo menos um dente e com osso alveolar residual de altura igual ou inferior a 5 mm. Os templates (n=20) continham imagens de secções transversais representativas numa vista multiplanar. Dez experientes cirurgiões voluntariamente participaram como avaliadores dos templates para o planejamento cirúrgico de enxerto para um implante de 10 mm de comprimento. Os avaliadores escolheram a melhor quantidade de material de enxerto usando os escores: 0) quando o enxerto era desnecessário, 1) para 0,25 g de enxerto, 2) para 0,50 g, 3) para 1,00 g, e 4) para 1,50 g ou mais. A confiabilidade do padrão de resposta foi analisada utilizando a a de Cronbach. Os testes de Wilcoxon e Mann-Whitney foram utilizados para comparar os escores. A análise de regressão foi realizada para avaliar se o volume dos seios (mm3) influenciou a escolha dos escores. Na análise de confiabilidade, todos os valores foram baixos e a distribuição dos escores foi independente do volume dos seios maxilares (p>0,05), o que não influenciou a escolha da quantidade de material de enxerto. Os cirurgiões apresentaram falta de confiabilidade ao determinar a melhor quantidade de material de enxerto para o aumento do assoalho do seio maxilar utilizando somente as imagens de TCFC. Assim, os cirurgiões necessitam de ferramentas de diagnóstico auxiliares para mensuração de volume associada à TCFC para um melhor desempenho.

Investigations of the prevalence and virulence of Candida albicans in periodontal and endodontic lesions in diabetic and normoglycemic patients

Abstract Pulpal and periodontal tissues have similar microbiota that allows cross-contamination between the pulp and periodontal tissues. Objective The aim of this study was to investigate the prevalence of isolated Candida albicans from periodontal endodontic lesions in diabetic and normoglycemic patients, and the fungi's virulence in different atmospheric conditions. Material and Methods A case-control study was conducted on 15 patients with type 2 diabetes mellitus (G1) and 15 non-diabetics (G2) with periodontal endodontic lesions. Samples of root canals and periodontal pockets were plated on CHROMagar for later identification by polymerase chain reaction (PCR) and virulence test. Results C. albicans was identified in 79.2% and 20.8% of the 60 samples collected from diabetic and normoglycemic patients, respectively. Of the 30 samples collected from periodontal pockets, 13 showed a positive culture for C. albicans, with 77% belonging to G1 and 23% to G2. Of the 11 positive samples from root canals, 82% were from G1 and 18% from G2. Production of proteinase presented a precipitation zone Pz<0.63 of 100% in G1 and 72% in G2, in redox and negative (Pz=1), under anaerobic conditions in both groups. Hydrophobicity of the strains from G1 indicated 16.4% with low, 19.3% with moderate, and 64.3% with high hydrophobicity in redox. In G2, 42.2% had low, 39.8% had moderate, 18% had high hydrophobicity in redox. In anaerobic conditions, G1 showed 15.2% with low, 12.8% with moderate, and 72% with high hydrophobicity; in G2, 33.6% had low, 28.8% had moderate, and 37.6% had high hydrophobicity. There was statistical difference in the number of positive cultures between G1 and G2 (p<0.05) with predominance in G1. There was statistical difference for all virulence factors, except hemolysis (p=0.001). Conclusions Candida albicans was isolated more frequently and had higher virulence in diabetic patients.

Microbiological, lipid and immunological profiles in children with gingivitis and type 1 diabetes mellitus.

OBJECTIVE: The aim of this study was to compare the prevalence of periodontal pathogens, systemic inflammatory mediators and lipid profiles in type 1 diabetes children (DM) with those observed in children without diabetes (NDM), both with gingivitis. MATERIAL AND METHODS: Twenty-four DM children and twenty-seven NDM controls were evaluated. The periodontal status, glycemic and lipid profiles were determined for both groups. Subgingival samples of periodontal sites were collected to determine the prevalence of periodontal microorganisms by PCR. Blood samples were collected for IL-1-ß, TNF-α and IL-6 analysis using ELISA kits. RESULTS: Periodontal conditions of DM and NDM patients were similar, without statistical differences in periodontal indices. When considering patients with gingivitis, all lipid parameters evaluated were highest in the DM group; Capnocytophaga sputigena and Capnocytophaga ochracea were more prevalent in the periodontal sites of DM children. "Red complex" bacteria were detected in few sites of DM and NDM groups. Fusobacterium nucleatum and Campylobacter rectus were frequently found in both groups. Similar levels of IL-1-ß, TNF-α and IL-6 were detected in DM and NDM children. CONCLUSION: Clinical and immunological profiles are similar between DM and NDM children. The presence of Capnocytophaga sputigena and Capnocytophaga ochracea were associated with gingivitis in DM children.

Microbiological, lipid and immunological profiles in children with gingivitis and type 1 diabetes mellitus

Abstract Objective The aim of this study was to compare the prevalence of periodontal pathogens, systemic inflammatory mediators and lipid profiles in type 1 diabetes children (DM) with those observed in children without diabetes (NDM), both with gingivitis. Material and methods Twenty-four DM children and twenty-seven NDM controls were evaluated. The periodontal status, glycemic and lipid profiles were determined for both groups. Subgingival samples of periodontal sites were collected to determine the prevalence of periodontal microorganisms by PCR. Blood samples were collected for IL-1-β, TNF-α and IL-6 analysis using ELISA kits. Results Periodontal conditions of DM and NDM patients were similar, without statistical differences in periodontal indices. When considering patients with gingivitis, all lipid parameters evaluated were highest in the DM group; Capnocytophaga sputigena and Capnocytophaga ochracea were more prevalent in the periodontal sites of DM children. “Red complex” bacteria were detected in few sites of DM and NDM groups. Fusobacterium nucleatum and Campylobacter rectus were frequently found in both groups. Similar levels of IL-1-β, TNF-α and IL-6 were detected in DM and NDM children. Conclusion Clinical and immunological profiles are similar between DM and NDM children. The presence of Capnocytophaga sputigena and Capnocytophaga ochracea were associated with gingivitis in DM children.

Surgeons' Performance Determining the Amount of Graft Material for Sinus Floor Augmentation Using Tomography.

This study aimed to assess the performance of surgeons in determining the amount of graft material required for maxillary sinus floor augmentation in a preoperative analysis using cone-beam computed tomography images. A convenience sample of 10 retrospective CBCT exams (i-CAT®) was selected. Scans of the posterior maxilla area with an absence of at least one tooth and residual alveolar bone with an up to 5 mm height were used. Templates (n=20) contained images of representative cross-sections in multiplanar view. Ten expert surgeons voluntarily participated as appraisers of the templates for grafting surgical planning of a 10 mm long implant. Appraisers could choose a better amount of graft material using scores: 0) when considered grafting unnecessary, 1) for 0.25 g in graft material, 2) for 0.50 g, 3) for 1.00 g and 4) for 1.50 g or more. Reliability of the response pattern was analyzed using Cronbach's a. Wilcoxon and Mann-Whitney tests were performed to compare scores. Regression analysis was performed to evaluate whether the volume of sinuses (mm3) influenced the choose of scores. In the reliability analysis, all values were low and the score distribution was independent of the volume of the maxillary sinuses (p>0.05), which did not influence choosing the amount of graft material. Surgeons were unreliable to determine the best amount of graft material for the maxillary sinus floor augmentation using only CBCT images. Surgeons require auxiliary diagnostic tools to measure the volume associated to CBCT exams in order to perform better.

Prophylaxis of pancreatitis with intravenous ketoprofen in a consecutive population of ERCP patients: a randomized double-blind placebo-controlled trial.

Background Acute pancreatitis is the most common complication after ERCP, occurring in about 4 % of the procedures. Only the placement of pancreatic duct prosthesis and the use of nonsteroidal anti-inflammatory drugs (NSAIDs) have shown benefit in the prevention of post-ERCP pancreatitis (PEP). Although the benefit of rectal administration of indomethacin or diclofenac is recommended by some studies and society guidelines especially in a selected group of high-risk patients, there is so far, no standardization of time or route of NSAID administration. The aim of the current study is to investigate the role of an intravenous NSAID administered before the procedure for PEP prevention. Methods In this randomized double-blind clinical trial, all consecutive patients who underwent ERCP were randomized to receive saline infusion with ketoprofen or saline, immediately before the procedure. Results A total of 477 patients were enrolled and completed follow-up. The majority of patients (72.1 %) had bile duct stones, and only 1.5 % had a clinical suspicion of sphincter of Oddi dysfunction. PEP developed in 5 of 253 (2 %) patients in the placebo group and in 5 of 224 (2.2 %) patients in the ketoprofen group (p = 1.). Conclusions Intravenous administration of ketoprofen immediately prior to ERCP did not result in reduction in PEP in a general population of ERCP patients.

Condição de saúde oral e indicativos da síndrome de Burnout em estudantes de Odontologia sedentários e atletas / Condition of oral health and Burnout syndrome indicatives in sedentary and athlete Dental students

O estudo objetivou comparar a condição de saúde oral e os indicativos de síndrome de Burnout em estudantes de Odontologia sedentários e atletas. Após aprovação do projeto pelo Comitê de Ética em Pesquisa, foi selecionada, por conveniência, uma amostra não probabilística de estudantes do terceiro ano do Curso de Odontologia de uma Universidade Federal brasileira com características semelhantes quanto ao sexo, idade, escolaridade e nível socioeconômico, para compor dois grupos independentes: 1) atletas e 2) sedentários. Para as estimativas da condição de saúde oral foram realizadas avaliação periodontal completa, levantamento de dados de um questionário elaborado a partir de uma ferramenta validada, o Maslach Burnout Inventory-General Survey (MBI), preenchimento de prontuário de paciente e radiografia panorâmica. Os dados coletados foram analisados estatisticamente pelo teste T ou Mann-Whitney, análise de regressão logística simples e correlação de Pearson (significância em 5%, α =0,05). Houve variações na condição de saúde oral de estudantes de Odontologia atletas em relação aos sedentários quanto ao sangramento à sondagem, a profundidade de sondagem e achados radiográficos, que apresentaram variações estatisticamente significativas (p<0,05) com piores resultados para o grupo de sedentários. O sangramento à sondagem foi o principal indicativo da discrepância que apresentou correlação fraca (ρ=0,31) com a exaustão emocional, que é a medida do sentimento de estar emocionalmente sobrecarregado e esgotado. Os estudantes sedentários são mais sensíveis a problemas e tensões desencadeados no ambiente acadêmico, com maior propensão a instalação de danos somáticos como os problemas orais (AU).

The study aimed to compare the oral health condition and the Burnout syndrome indicatives of athete and sedentary dental students. After the approval of the project by the research ethics committee a non-probabilistic sample of convenience, with students of third year of dentistry course of a Brazilian Federal University with similar characteristics in relation to sex, age, schooling and socioeconomic level were selected. They composed two independent groups: 1) Atheletes and 2) Sedentaries. For health estimations were performed a periodontal evaluation and data collections from a questionnaire on the basis of a validated tool, the Maslach Burnout Inventory-General Survey (MBI), a medical records and a panoramic radiograph. All data were statistically analyzed by T-test, Mann-Whitney test, simple logistic regression analysis and Pearson's correlation (significance at 5%, α = 0.05). There were variations in the oral health condition between the athelete and sedentary dental students for bleeding on probe, probe depth and radiographic findings that statistically differed (p<0.05) showing worst results for the sedentary group. The bleeding on probe was the main indicator of the discrepancy and presented a weak correlation (ρ = 0.31) with an emotional exhaustion, which measures feelings of being emotionally overextended and exhausted. Sedentary dental students are more sensitive to problems and tensions triggered in the academic environment with a greater propensity to instalation of somatic injuries such as oral problems (AU).

Aspectos clínicos, microbiológicos e tratamento periodontal em pacientes fumantes portadores de doença periodontal crônica: revisão de literatura / Clinical and microbiological aspects of periodontal treatment in smoker patients with chronic periodontal disease: literature review

Objetivo: o propósito deste estudo foi avaliar, através da revisão de literatura, os aspectos clínicos (índice de placa, índice gengival, profundidade de sondagem, recessão gengival e nível clínico de inserção) e microbiológicos (presença qualitativa e quantitativa de periodontopatógenos) e a resposta de pacientes tabagistas à terapia periodontal. Material e Métodos: foram selecionados artigos científicos publicados entre os anos de 1978 a 2014, através dos bancos de dados MEDLINE, PUBMED e LILACS. Resultados: existem divergências em relação à influência do tabagismo nos parâmetros clínicos e microbiológicos. Conclusão: baseado nos estudos avaliados pode-se concluir que há diferenças clínicas e microbiológicas significativas no paciente tabagista e comprometimento da resposta à terapia periodontal.

Objective: the aim of this study was to evaluate, through literature review, clinical aspects (plaque index, gingival index, probing depth, gingival recession and clinical attachment level) and microbiological (qualitative and quantitative presence of periodontal pathogens) in smokers patients and the response to periodontal therapy. Material and Methods: it was selected scientific articles published between the years 1978 and 2014. We were selected scientific articles from MEDLINE, PUBMED and LILACS databases. Results: there are controversies between tobacco and clinical and microbiological parameters. Conclusion: based on the evaluated studies we can conclude that there are significant clinical and microbiological differences in smoking patients and impaired response to periodontal therapy.