Efecto del tratamiento con ácido zoledrónico e hidroxocobalamina sobre la microarquitectura ósea en ratones con periodontitis y osteoporosis inducida: Estudio preclínico / Effect of zoledronic acid and hydroxocobalamin treatment on bone microarchitecture in mice with induced periodontitis and osteoporosis: preclinical study

Objetivo. Evaluar el efecto del tratamiento con ácido zoledrónico e hidroxocobalamina sobre la microarquitectura ósea alveolar en ratones con periodontitis y osteoporosis inducidas. Métodos. Diseño experimental en fase preclínica. Se incluyeron 16 ratones hembras a quienes se les indujo osteoporosis mediante la ovariectomía total y también se indujo la periodontitis por inflamación por ligadura de seda negra 5/0 en el segundo molar maxilar, todos los protocolos fueron sometidos durante anestesia general. Los ratones se distribuyeron en 4 grupos: control, tratamiento con ácido zoledrónico, tratamiento con hidroxocobalamina y tratamiento combinado. A las 16 semanas, se realizó la autanasia, se realizó la disección para la evaluación mediante microtomografía; determinando la densidad mineral ósea (BMD), el volumen de hueso (BV/TV), espesor trabecular (Tb. Th), número de trabéculas (Tb.N), separación trabecular (Tb.Sp); se realizó el análisis descriptivo y bivariado mediante ANOVA de 1 vía considerando un 95% de nivel de confianza. Resultados. El grupo que recibió tratamiento combinado de ácido zoledrónico e hidroxocobalamina presentó mayor densidad mineral ósea (DMO), mayor volumen óseo (BV/TV) y menor separación trabecular (Tb.Sp) en comparación con el grupo de control (p<0,05). Conclusiones. El tratamiento combinado de ácido zoledrónico e hidroxocobalamina mejora las características microarquitectónicas óseas en ratones con osteoporosis y periodontitis inducidas.

Objective. Evaluate the effect of zoledronic acid and hydroxocobalamin treatment on alveolar bone microarchitecture in mice with induced periodontitis and osteoporosis. Methods. Experimental design in preclinical phase. Sixteen female mice were included in which osteoporosis was induced by total ovariectomy and periodontitis was also induced by inflammation by 5/0 black silk ligation of the maxillary second molar, all protocols were performed under general anesthesia. The mice were distributed into 4 groups: control, treatment with zoledronic acid, treatment with hydroxocobalamin and combined treatment. At 16 weeks, euthanasia was performed, dissection was performed for evaluation by microtomography; determining bone mineral density (BMD), bone volume (BV/TV), trabecular thickness (Tb.Th), number of trabeculae (Tb.N), trabecular separation (Tb.Sp); descriptive and bivariate analysis was performed using 1-way ANOVA with a 95% confidence level. Results. The group that received combined treatment of zoledronic acid and hydroxocobalamin presented higher bone mineral density (BMD), higher bone volume (BV/TV) and lower trabecular separation (Tb.Sp) compared to the control group (p<0.05). Conclusions. Combined treatment with zoledronic acid and hydroxocobalamin improves bone microarchitectural features in mice with induced osteoporosis and periodontitis.

Comparison of the anesthetic effect of alkalized lidocaine versus non-alkalized lidocaine administered at a slow rate in mandibular primary molars.

Background: There are several invasive dental procedures that require local anesthetics. However, its infiltration is usually associated with anxiety and fear, increasing the perception of pain in pediatric patients. For this reason, it is important to evaluate different strategies for its application. We compared the anesthetic effect of the administration of 2% lidocaine with epinephrine 1:80000 non-alkalized at slow speed and alkalized at fast speed to block the inferior alveolar nerve in deciduous molars. Methods: A crossover clinical trial was carried out whose sample consisted of 38 patients between 6-10 years who required bilateral pulp treatment in their first mandibular primary molars. At the first appointment, they received 2% lidocaine with 1:80000 alkalinized epinephrine administered at a fast rate, and at the second appointment, 2% lidocaine with 1:80000 non-alkalized epinephrine administered at a low speed. We evaluated the onset of action, duration of the anesthetic effect, and intensity of pain during its infiltration. Results: We found that non-alkalized lidocaine at slow speed had a shorter onset time of action (57.21±22.21 seconds) and longer duration of effect (170.82±43.75 minutes) compared to administration of alkalinized lidocaine at fast speed (74.03±22.09 seconds, 148.24±36.24 minutes, respectively). There was no difference in the level of pain intensity. Conclusion: In this study, the slow administration of the non-alkalized local anesthetic showed a shorter onset time of action and a longer duration of the anesthetic effect in comparison with the alkalized local anesthetic administered at a rapid rate in the blockade of the inferior alveolar nerve in deciduous molars.

In vitro antimicrobial activity of the triantibiotic paste, according to the time of application and storage

Introduction: Intracanal medication with antibiotics is used to ensure the success of treatments. However, no studies evaluating the efficacy of triantibiotic paste after several hours of preparation have been reported. Objective: To evaluate the antimicrobial activity of the triantibiotic paste against Enterococcus faecalis, according to the time of application and storage of the components used for its preparation. Methods: An experimental in vitro study was carried out in the microbiology laboratory of Universidad Nacional Mayor de San Marcos. The sample consisted of three colonies of Enterococcus faecalis, formed in bile-esculin agar. On three specific days (0, 14 and 28), the antimicrobial activity of the conventional (ciprofloxacin/metronidazole/minocycline) and modified (cefaclor/metronidazole/minocycline) paste was evaluated, measuring (mm) the inhibition zones. The freshly obtained components were used to prepare the paste on day 0, and the stored components (powdered antibiotics kept in amber glass bottles at room temperature) were used on days 14 and 28. Two interventions were performed on each specific day (morning and afternoon). Freshly prepared pastes were used in the morning (immediate application), while pastes stored for 6 hours (delayed application) were used in the afternoon. Results: On day 0, it was found that the modified triantibiotic paste of immediate application had higher antimicrobial activity than the one of delayed application (p = 0.046). On day 28, the conventional triantibiotic paste for immediate application showed higher antimicrobial activity than that for delayed application (p = 0.049). Pasta prepared with fresh components (day 0) had higher antimicrobial activity than pasta prepared with components stored for 14 and 28 days. Conclusions: The application time of the triantibiotic paste and the storage times of the components could influence the antimicrobial activity for the eradication of Enterococcus faecalis.

Introducción: La medicación intracanal con antibióticos se utiliza para asegurar el éxito de los tratamientos. Sin embargo, no se han reportado estudios que evalúen la eficacia de la pasta triantibiótica después de varias horas de preparación. Objetivo: Evaluar la actividad antimicrobiana de la pasta triantibiótica frente al Enterococcus faecalis, según el tiempo de aplicación y de almacenamiento de los componentes utilizados para su preparación. Métodos: Estudio experimental in vitro, realizado en el laboratorio de microbiología de la Universidad Nacional Mayor de San Marcos. La muestra consistió en tres colonias de Enterococcus faecalis, formadas en agar bilis-esculina. En tres días específicos (0, 14 y 28) se evaluó la actividad antimicrobiana de la pasta convencional (ciprofloxacina/metronidazol/minociclina) y modificada (cefaclor/metronidazol/minociclina), midiendo las zonas de inhibición (mm). Los componentes recién obtenidos se utilizaron para preparar la pasta el día 0, y los componentes almacenados (antibióticos pulverizados conservados en frascos de vidrio color ámbar a temperatura ambiente) se utilizaron los días 14 y 28. Se realizaron dos intervenciones en cada día específico (mañana y tarde). Las pastas recién preparadas se utilizaron por la mañana (aplicación inmediata), mientras que por la tarde se utilizaron las pastas almacenadas durante 6 horas (aplicación tardía). Resultados: El día 0, se encontró que la pasta triantibiótica modificada de aplicación inmediata presentó una actividad antimicrobiana superior a la de aplicación tardía (p = 0,046). El día 28, la pasta triantibiótica convencional de aplicación inmediata presentó una actividad antimicrobiana superior a la de aplicación tardía (p = 0,049). La pasta preparada con componentes recién obtenidos (día 0) tuvo una mayor actividad antimicrobiana que la pasta preparada con componentes almacenados durante 14 y 28 días. Conclusiones: El tiempo de aplicación de la pasta triantibiótica y los tiempos de almacenamiento de los componentes podrían influir en la actividad antimicrobiana para la erradicación de Enterococcus faecalis.

Fluorosis dental en adolescentes de instituciones educativas de Lima, Perú / Dental fluorosis in adolescents from Educational Institutions in Lima, Peru

Introducción: La fluorosis dental es una patología endémica causada por la ingestión excesiva de fluoruros que pueden producir una alteración durante el desarrollo del esmalte, y es considerado un importante problema de salud pública porque afecta la salud bucal y sistémica de la población. Objetivo: Este estudio tuvo como idea principal determinar la frecuencia y los niveles de fluorosis dental en escolares de 12 a 15 años pertenecientes a dos instituciones educativas de Lima - Perú. Método: Se realizó un estudio descriptivo de tipo transversal, la muestra estuvo conformada por 252 estudiantes, entre 12 y 15 años de dos centros educativos de Lima. El muestreo fue por selección sistemática de elementos muestrales. La fluorosis dental se evalúo mediante el Índice de Dean. Para determinar la frecuencia y los niveles de fluorosis dental, se realizó un examen clínico bucal y se desarrolló un cuestionario validado previamente. Resultados: La frecuencia de fluorosis dental fue de 44,8% (n=113) afectando más a los varones en un 27,39% (n=69) y a los adolescentes de 13 años (15,1%). En relación con los niveles de fluorosis, predominó el tipo "muy leve" (34,9%). También se encontró una asociación entre la presencia y el nivel de fluorosis con el número de aplicaciones de flúor (p<0,05). Además, se dijo que el índice comunitario de fluorosis de Dean fue de 0,43. Conclusiones: En la población escolar evaluada, la frecuencia de fluorosis fue de 44,8% y el nivel predominante de fluorosis fue muy leve. Además, el índice comunitario fue de 0,43, el cual mostró un nivel límite de importancia para la salud pública. Por lo que se puede considerar que el número de aplicaciones tópicas de flúor recibido por la población sin una planificación adecuada se podría convertir en un factor de riesgo para causar fluorosis dental.

Introduction: Dental fluorosis is an endemic pathology caused by the excessive ingestion of fluorides that can produce an alteration during the development of the enamel and is considered an important public health problema because it affects the oral and systemic health of the population. Objective: The objective of this study was to determine the frequency and levels of dental fluorosis in school children between 12 and 15 years of age belonging to two educational institutions in Lima, Peru. Method: A descriptive cross-sectional study was carried out, the sample consisted of 252 students between 12 and 15 years of age from two educational centers in Lima. Sampling was by systematic selection of sample elements. Dental fluorosis was evaluated using the Dean Index. To determine the frequency and levels of dental fluorosis a clinical oral examination was carried out and a previously validated questionnaire was developed. Results: The frequency of dental fluorosis was 44.8% (n=113) affecting more males by 27.39% (n=69) and adolescents aged 13 years (15.1%). In relation to the levels of fluorosis, the "very mild" type predominated (34.9%). An association was also found between the presence and level of fluorosis with the number of fluoride applications (p<0.05). In addition, Dean's community fluorosis index was reported to be 0.43. Conclusions: In the school population evaluated, the frequency of fluorosis was 44.8% and the predominant level of fluorosis was very mild. In addition, the community index was 0.43, which indicated a borderline level of public health importance. Therefore, it can be considered that the number of topical fluoride applications received by the population without adequate planning could become a risk factor for causing dental fluorosis.

Uso de la membrana amniótica como material de apósito en paciente con fascitis necrotizante: A propósito de un caso

Introducción: La fascitis necrotizante es una infección grave que involucra la piel, el tejido celular subcutáneo y las fascias superficiales-profundas, progresa muy rápidamente y si no se trata a tiempo puede causar la muerte. Reporte de caso: Presentamos el caso de una paciente adulta con antecedentes de anemia, a quien se le diagnosticó fascitis necrosante de origen odontogénico, por lo que fue intervenida quirúrgicamente y se realizó un drenaje intraoral y extraoral más escarectomía. Además, se le administró tratamiento farmacológico (antibióticos intravenosos) y se colocó una membrana amniótica como material de apósito para reconstruir la superficie hemorrágica dejada por la fascitis necrotizante. Conclusiones: La membrana amniótica como material de apósito presentó resultados favorables en la paciente al obtenerse una rápida regeneración de la secuela producida por la fascitis necrotizante.

Introduction: Necrotizing fasciitis is a serious infection that involves the skin, the subcutaneous tissue, and the superficial-deep fascia, it progresses very quickly and if not treated in time it can cause death. Report case: We present the case of an adult patient with a history of anemia, who was diagnosed with odontogenic necrotizing fasciitis, for which she underwent surgery and underwent intraoral and extraoral drainage plus escharectomy. In addition, pharmacological treatment (intravenous antibiotics) was administered, and an amniotic membrane was placed as a dressing material to reconstruct the hemorrhagic surface left by the necrotizing fasciitis. Conclusions: The amniotic membrane as a dressing material presented favorable results in the patient, obtaining a rapid regeneration of the sequel produced by necrotizing fasciitis.

Evaluation of Current Evidence on the Use of Oral Antiseptics Against SARS-CoV-2: A Narrative Review.

Aims and Objectives: The detection of SARS-COV-2 in the oral cavity has generated endless claims about the efficacy of using oral mouthwashes to reduce viral load. This review aims to assess the current evidence on the use of oral antiseptics against SARS-CoV-2 and to assess the certainty of the evidence according to the GRADE system. The question this study focussed on was what is the efficacy of oral antiseptics against SARS-CoV-2? Materials and Methods: A bibliographic search was performed in Medline databases through PubMed, Science Direct, and Google Scholar (until February 2022), using search terms related to COVID-19 and oral antiseptics. Two independent researchers extracted the information from the articles included in an excel form. The identification and selection of the studies was carried out from August 2021 to February 2022. Results: It was found that oral antiseptics can have a potential beneficial effect on COVID-19, mainly in reducing viral load. However, these potential benefits are mainly based on in-vitro studies or clinical studies with various methodological limitations. At present, the certainty of the evidence is very low due to inconsistency (heterogeneity), moderate-to-high risk of bias, and imprecision of the results. Conclusion: The certainty of the current evidence on the efficacy of oral antiseptics against SARS-CoV-2 is very low, mainly due to the methodological limitations of the studies. Therefore, for evidence-based decision-making about this intervention, clinical studies with greater methodological rigor are required. Oral antiseptics could present potential benefits in patients with COVID-19 mainly by reducing viral load. However, a careful and conscious evaluation of the evidence is required for decision-making in clinical practice.

Synergistic anti-inflammatory effect of NSAIDs plus B vitamins administered pre and postoperatively in third molar surgery: randomized clinical trial / Efeito anti-inflamatório sinérgico da associação de AINEs e vitaminas do complexo B administrada no pré e pós-operatório de cirurgia de terceiros molares: ensaio clínico randomizado

Objective : The aim of the present study was to evaluate the synergistic anti-inflammatory effect of Non-steroidal anti-inflammatory drugs (NSAIDs) plus B vitamins administered pre and postoperatively in surgeries of impacted mandibular third molars. Material and Methods : Double-blind randomized clinical trial, sixty-six patients participated and were randomized into 2 groups. The control group was administered meloxicam 15 mg intramuscularly plus placebo orally and to the experimental group, meloxicam 15 mg intramuscularly plus vitamins B [B1, B6, and B12] orally; both treatments were administered preoperatively. The anti-inflammatory effect was evaluated by pain intensity, facial swelling (facial contour measurements), and mouth opening (distance between the upper and lower incisors) during the post-surgical phase. Student's t-test was performed for independent samples. Results : In all the evaluated times (1 hour, 6 hours, 12 hours, 24 hours, 2 days, and 3 days after the end of the surgery) the experimental group presented a significantly lower intensity of pain compared to the control group (p<0.05). The highest pain intensity was recorded at 6 hours (17.7 ± 9.1 mm in the experimental group and 34.5 ± 21.3 mm in the control group). Swelling and mouth opening were similar in both groups, at all times evaluated (p>0.05). Conclusion : In the present study, the administration of NSAIDs plus B vitamins (B1, B6, B12) produced lower intensity of pain compared to the administration of only NSAIDs. Nevertheless, swelling and mouth opening were similar in all evaluations for both study groups (AU)

Objetivo : O objetivo do presente estudo foi avaliar o efeito anti-inflamatório sinérgico de anti-inflamatórios não esteroidais (AINEs) com vitaminas do complexo B administrados no pré e pós-operatório de cirurgias de terceiros molares inferiores impactados. Material e Métodos: Ensaio clínico randomizado duplo-cego, 66 participantesque foram randomizados em 2 grupos. O grupo controle recebeu Meloxicam 15 mg por via intramuscular + placebo por via oral e o grupo experimental, Meloxicam 15 mg por via intramuscular + vitaminas B [B1, B6 e B12] por via oral; ambos os tratamentos foram administrados no pré-operatório. O efeito anti-inflamatório foi avaliado pela intensidade da dor, edema facial (medidas do contorno facial) e abertura da boca (distância entre os incisivos superiores e inferiores) durante a fase pós-cirúrgica. Foi aplicado o teste t de Student para amostras independentes. Resultados: Em todos os tempos avaliados (1 hora, 6 horas, 12 horas, 24 horas, 2 dias e 3 dias após o término da cirurgia) o grupo experimental apresentou uma intensidade de dor significativamente menor em relação ao grupo controle (p <0,05). A maior intensidade de dor foi registrada em 6 horas (17,7 ± 9,1 mm no grupo experimental e 34,5 ± 21,3 mm no grupo controle). Edema e abertura bucal foram semelhantes nos dois grupos, em todos os momentos avaliados (p>0,05). Conclusão: No presente estudo, a administração de AINEs com vitaminas do complexo B (B1, B6, B12) resultou em menor intensidade de dor em comparação com a administração apenas de AINEs. No entanto, o edema e a abertura da boca foram semelhantes em todas as avaliações para ambos os grupos de estudo (AU).

Evaluación del conocimiento sobre atención de emergencias médicas en dos facultades odontológicas del Perú / Evaluation of knowledge on medical emergency care in two schools of dentistry in Peru

Introducción: Las emergencias son circunstancias de aparición súbita que pueden presentarse durante la atención odontológica y pueden comprometer la vida del paciente; por ello, es necesario tener conocimientos sobre su diagnóstico y tratamiento primario para estabilizar al paciente. Objetivo: Determinar el nivel de conocimientos sobre la atención de emergencias médicas en estudiantes de Odontología de dos universidades peruanas. Material y Métodos: Estudio transversal descriptivo en el cual participaron 134 estudiantes de 7mo a 10mo ciclo, provenientes de la Universidad Científica del Sur y la Universidad Norbert Wiener. Se evaluaron los conocimientos sobre la atención de emergencias médicas considerando 3 dimensiones: diagnóstico, primeros auxilios y tratamiento farmacológico. La evaluación fue realizada mediante un cuestionario validado previamente. Resultados: El nivel general de conocimientos sobre la atención de emergencias médicas en ambas universidades fue regular, con 69,8 por ciento de estudiantes de la Universidad Científica del Sur y 53,5 por ciento de estudiantes de la Universidad Norbert Wiener; sin embargo, hubo diferencia significativa entre ambas universidades. (p=0,034). Asimismo, se observó diferencia significativa en el conocimiento sobre el diagnóstico, a favor de la Universidad Científica del Sur (p<0,05), pero no se encontraron diferencias al evaluar los conocimientos sobre primeros auxilios y tratamiento farmacológico (p<0,05). Conclusiones: La evaluación general de conocimientos sobre la atención de emergencias médicas en estudiantes de Odontología de Universidad Científica del Sur y la Universidad Norbert Wiener fue predominantemente regular(AU)

Introduction: Emergencies are circumstances of sudden onset that can occur during dental care and can compromise the patient's life; therefore, it is necessary to have knowledge about its diagnosis and primary treatment to stabilize the patient. Objective: To determine the level of knowledge about medical emergency care in dental students from two universities in Lima (Peru) in 2019. Material and Methods: A descriptive cross-sectional study that included 134 students from 7th to 10th cycle from the Científica del Sur University and the Norbert Wiener University was conducted. Knowledge of medical emergency care was evaluated considering 3 dimensions: diagnosis, first aid, and pharmacological treatment. The evaluation was carried out using a previously validated questionnaire. Results: The general level of knowledge on medical emergency care in both universities was regular, with 69,8 percent of students from Científica del Sur University and 53,5 percent of students from Norbert Wiener University; however, there was a significant difference between both universities (p = 0.034). Likewise, a significant difference was observed in the knowledge about diagnosis in favor of the Científica del Sur University (p0.05). Conclusions: The overall level of knowledge on medical emergency care in dental students at Científica del Sur University and Norbert Wiener University was predominantly fair(AU)

Sedative effect of midazolam in different vehicles for oral administration.

Context: Oral administration of midazolam is one of the most important protocols for producing adequate conscious sedation; however, it has an unpleasant taste and is poorly tolerated by pediatric patients. Aim: The aim of this study was to evaluate the sedative effect of diluted midazolam in different vehicles used to mask its unpleasant taste. Methods and Material: A total of 30 male mice (BALB-c) were randomly distributed in five groups. They were administered diluted midazolam in different vehicles (saline solution, paracetamol syrup, diclofenac suspension, multi-vitamin syrup, and boxed juice). All suspensions were administered orally (0.6 mg/Kg). The pH variation was evaluated with a digital pH meter, and the quality of sedation was evaluated in three tests: hole board test, grip strength test, and forced swimming test. Results: The paracetamol syrup vehicle was found to be the only vehicle which did not change its pH over time after dilution of midazolam. When evaluating the perforated platform, the greatest sedative effect was observed in the midazolam group with the paracetamol syrup (P > 0.05). Regarding grip strength, a difference was evident in all study groups at 45 minutes (P = 0.006); the midazolam group with the multi-vitamin syrup was less effective. Regarding the response time to forced swimming, the midazolam group with the paracetamol syrup presented the longest time at 15 and 30 minutes (5.39 ± 0.93 and 6.29 ± 0.83, respectively). Conclusion: The suspension of midazolam diluted in the paracetamol syrup is the most suitable for performing conscious sedation efficiently.

Antiviral activity of the sea cucumber tegument extract (Pattalus mollis) on human rotavirus A (RVA).

The antiviral effect against RVA in cell culture was evaluated by using an aqueous extract of Patallus mollis sea cucumber, applying the titration methodology. This technique is used to measures the ability of the extract dilutions to inhibit the cytopathic effect (CPE) of the virus, expressed as percentage of inhibition (IP). The mean extract cytotoxic concentration (CC50) used in the antiviral assay was 27,042.10 µg/mL and the PI of the antiviral activity extract was greater than 99.9% for each concentration. To determine the viral action mode, the cells were previously treated with the extracts in different stages during the viral infection cycle. The result analysis suggests that the extract inhibits 99% of the virus during the absorption and viral inactivation phase. These results show the P. mollis extract has a remarkable antiviral effect against the RVA in cell culture. So that, it is crucial to investigate its action mechanisms.

Biochemical and histopathological effects of diclofenac and ketoprofen administration on bone regeneration / Efeitos bioquímicos e histopatológicos da administração de diclofenaco e cetoprofeno na regeneração óssea

Objetivo: Avaliar os efeitos bioquímicos e histopatológicos da administração de diclofenaco e cetoprofeno na regeneração óssea em modelo de defeito calvarial em ratos. Material e Métodos: A amostra foi composta por 108 ratos Wistar que foram distribuídos aleatoriamente em três grupos, aos quais foi realizada osteotomia de 6 mm de diâmetro na calvária. O grupo A (controle) recebeu solução salina; O Grupo B recebeu 2 mg / kg de cetoprofeno e o Grupo C recebeu 2 mg / kg de diclofenaco. Todos os tratamentos foram administrados intraperitonealmente a cada 12 horas durante 3 dias. A regeneração óssea foi avaliada pelas características bioquímicas (fosfatase alcalina e cálcio sérico) e histopatológicas (contagem de osteócitos e células de osteoblastos) aos 15 e 30 dias. Resultados:Na avaliação bioquímica, os níveis de fosfatase alcalina no grupo cetoprofeno foram significativamente menores em comparação com o grupo diclofenaco em 15 e 30 dias (p= 0.015 e p= 0.001; respectivamente). No entanto, os níveis séricos de cálcio não mostraram diferença entre os grupos de estudo aos 15 e 30 dias (p= 0.42 p= 0.81; respectivamente). Na análise histopatológica, a contagem de osteoblastos e osteócitos foi significativamente menor no grupo cetoprofeno em comparação ao grupo diclofenaco aos 15 e 30 dias (p< 0,05). Conclusão: A administração de cetoprofeno tem efeitos bioquímicos e histopatológicos negativos de maior intensidade na regeneração óssea em comparação com a administração de diclofenaco. (AU)

Objective: To evaluate the biochemical and histopathological effects of diclofenac and ketoprofen administration on bone regeneration in a calvarial defect model in rats. Material and Methods: The sample consisted of 108 Wistar rats that were randomly distributed in three groups, to which an osteotomy of 6 mm in diameter was performed in the calvaria. Group A (control) was given saline solution; Group B received ketoprofen 2 mg/kg and Group C received diclofenac 2 mg/kg. All treatments were administered intraperitoneally every 12 hours for 3 days. Bone regeneration was evaluated by biochemical (alkaline phosphatase and serum calcium) and histopathological (osteocyte and osteoblast cell count) characteristics at 15 and 30 days. Results: In the biochemical evaluation, alkaline phosphatase levels in the ketoprofen group were significantly lower compared to the diclofenac group at 15 and 30 days (p= 0.015 and p= 0.001; respectively). However, serum calcium levels did not show the difference between the study groups at 15 and 30 days (p= 0.42 and p= 0.81; respectively). In the histopathological analysis, the count of osteoblasts and osteocytes was significantly lower in the ketoprofen group compared to the diclofenac group at 15 and 30 days (p< 0.05). Conclusion: The administration of ketoprofen has negative biochemical and histopathological effects of greater intensity on bone regeneration compared to the administration of diclofenac (AU)

Effects of salbutamol, montelukast and prednisone on orthodontic tooth movement in rats / Efeitos do salbutamol, montelucaste e prednisona no movimento dentário ortodôntico em ratos

Objective: To evaluate the effect of salbutamol, montelukast, and prednisone on orthodontic tooth movement in rats. Material and Methods: In vivo experimental preclinical study. The sample consisted of 48 rats randomly distributed in four study groups. Group A was given saline solution; to group B, salbutamol 4 mg/Kg; to group C, montelukast 2.5 mg/Kg and to group D, prednisone 2.5 mg/Kg. All were fitted with orthodontic devices and the medications were administered intraperitoneally every 12 hours for 5 days. The clinical evaluation (variation in the interincisal distance) was performed at one, three, five, and seven days and the histopathological analysis (cell count) at five and seven days. Results: In the clinical evaluation of the variation in the interincisal distance, a significant difference was found in all the evaluations (p <0.05). It was found that the salbutamol group presented higher variation values in the interincisal distance on all the days evaluated. In the histopathological analysis at five and seven days, it was found that the osteoblast and osteocyte count was significantly higher in the salbutamol group compared to the other groups (p <0.05). However, in the subgroup analysis, it was found that there was no significant difference in the osteoblast and osteocyte count between the prednisone, montelukast, and control group (p> 0.05). Conclusion: The administration of salbutamol increased the magnitude of orthodontic tooth movement; nonetheless, the administration of montelukast and prednisone did not modify the magnitude of orthodontic tooth movement in rats. (AU)

Objetivo: Avaliar o efeito do salbutamol, montelucaste e prednisona no movimento dentário ortodôntico em ratos. Material e métodos: Estudo pré-clínico experimental in vivo. A amostra foi composta por 48 ratos distribuídos aleatoriamente em quatro grupos de estudo. O grupo A recebeu solução salina; para o grupo B, salbutamol 4 mg/kg; ao grupo C, montelucaste 2,5 mg/kg e ao grupo D, prednisona 2,5 mg/kg. Todos foram equipados com dispositivos ortodônticos e os medicamentos foram administrados por via intraperitoneal a cada 12 horas por 5 dias. A avaliação clínica (variação da distância interincisal) foi realizada em um, três, cinco e sete dias e a análise histopatológica (contagem de células) em cinco e sete dias. Resultados: Na avaliação clínica da variação da distância interincisal, houve diferença significativa em todas as avaliações (p <0,05). Verificou-se que o grupo salbutamol apresentou maiores valores de variação na distância interincisal em todos os dias avaliados. Na análise histopatológica aos cinco e sete dias, verificou-se que a contagem de osteoblastos e osteócitos foi significativamente maior no grupo salbutamol em comparação aos demais grupos (p<0,05). No entanto, na análise de subgrupos, verificou-se que não houve diferença significativa na contagem de osteoblastos e osteócitos entre os grupos prednisona, montelucaste e controle (p>0,05). Conclusão: A administração de salbutamol aumentou a magnitude do movimento dentário ortodôntico; no entanto, a administração de montelucaste e prednisona não modificou a magnitude do movimento dos dentes ortodônticos em ratos. (AU)

Lidocaína 2 % con adrenalina 1: 80000 alcalinizada con bicarbonato de sodio 8, 4 % en la anestesia dental / Lidocaine 2% with adrenaline 1: 80,000 alkalinized with sodium bicarbonate 8. 4 % in dental anesthesia

Introducción: La alcalinización de la lidocaína ha resultado ser exitosa en el bloqueo del nervio dentario inferior, sin embargo, existen resultados contradictorios respecto a su eficacia clínica. Objetivo: Determinar el efecto de la lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 % sobre el bloqueo del nervio dentario inferior. Material y métodos: Estudio experimental, prospectivo y longitudinal conformado por 50 pacientes de la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos. Las siguientes soluciones fueron administradas para el bloqueo del nervio dentario inferior: lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 por ciento y lidocaína 2 por ciento con adrenalina 1:80000 no alcalinizada. Se evaluó la intensidad del dolor por la inyección, parámetros hemodinámicos y periodos anestésicos (tiempo de inicio de acción y duración del efecto anestésico). Resultados: Se evidenció una menor intensidad del dolor por la inyección en el grupo de lidocaína alcalinizada (19,16 ± 2,7) en comparación al grupo de lidocaína no alcalinizada (22,88 ± 4,2); p=0,02. Así mismo, el tiempo de inicio de acción fue menor en el grupo de lidocaína alcalinizada (105,72 ± 9,7s) en comparación con el grupo de lidocaína no alcalinizada (157,52 ± 12,1); p=0,002. Sin embargo, no se evidenciaron diferencias significativas en los parámetros hemodinámicos (p>0,05) y la duración del efecto anestésico (p=0,114). Conclusiones: La lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 por ciento sobre el bloqueo del nervio dentario inferior produce una disminución de la intensidad del dolor por la inyección y del tiempo de inicio de acción, en comparación con la formulación no alcalinizada. Sin embargo, no se evidencian diferencias en relación con los parámetros hemodinámicos ni a la duración del efecto anestésico(AU)

Introduction: The alkalinization of lidocaine has been successful in blocking the inferior dental nerve; however, there are contradictory results regarding its clinical efficacy. Objective: To determine the effect of 2 percent lidocaine with 1: 80,000 adrenaline alkalinized with 8.4 percent sodium bicarbonate on inferior dental nerve block. Material and methods: Experimental, prospective and longitudinal study that comprised 50 patients from the Dental School of the National University of San Marcos. The following solutions were administered for inferior dental nerve block: 2 percent lidocaine with epinephrine 1: 80,000 alkalinized with 8.4 percent sodium bicarbonate and 2 percent lidocaine with 1: 80,000 adrenaline not alkalinized. Pain intensity was evaluated by injection, hemodynamic parameters and anesthetic periods (time of onset of action and duration of the anesthetic effect). Results: There was a lower pain intensity due to injection in the alkalized lidocaine group (19.16 ± 2.7) compared to the non-alkalinized lidocaine group (22.88 ± 4.2); p=0.02. Likewise, the onset time of action was lower in the alkalized lidocaine group (105.72 ± 9.7) compared to the non-alkalinized lidocaine group (157.52 ± 12.1); p=0.002. However, no significant differences were found in the hemodynamic parameters (p>0.05) and the duration of the anesthetic effect (p=0.114). Conclusions: Lidocaine 2 percent with adrenaline 1: 80,000 alkalized with sodium bicarbonate at 8.4 percent on the block of the inferior dental nerve produces a decrease in pain intensity due to injection and the time of onset of action, compared to the non-alkalinized formulation. However, there are no differences in relation to the hemodynamic parameters or the duration of the anesthetic effect(AU)

Efecto antinflamatorio de la asociación dexametasona con ketorolaco o diclofenaco en cirugía de tercer molar. Ensayo clínico aleatorizado / Anti-inflammatory effect of the dexamethasone association with ketorolac or diclofenac in third molar surgery. Randomized clinical trial

OBJETIVO: Evaluar el efecto antinflamatorio de la asociación dexametasona con diclofenaco y la asociación dexametasona con ketorolaco en cirugía de tercer molar mandibular. MATERIAL Y MÉTODO: Ensayo clínico aleatorizado doble ciego que incluyó 75 pacientes que se dividieron aleatoriamente en tres grupos: el grupo DK recibió la asociación dexametasona con ketorolaco; el grupo DD, la asociación dexametasona con diclofenaco y el grupo control D, solo dexametasona; todos por vía intramuscular, treinta minutos antes de la cirugía. El efecto antinflamatorio se determinó por la evaluación del dolor y la tumefacción postquirúrgicos. El dolor se evaluó mediante la escala visual análoga y el consumo total de analgésicos. La tumefacción se evalúo mediante las medidas de tumefacción facial y la apertura bucal. RESULTADOS: El grupo DD evidenció menor intensidad de dolor a las 4, 6, 12, 24 y 48 horas en comparación a los otros grupos de tratamiento (p < 0,05). El consumo total de analgésicos fue significativamente menor en el grupo DD (1,20 ± 0,3) en comparación con los otros grupos de tratamiento (p = 0,002). La tumefacción facial fue similar en todos los grupos de estudio (p > 0,05). El grupo DD evidenció una significativa mayor apertura bucal solamente a las 48 horas postoperatorias en comparación a los otros grupos de estudio (p = 0,01). CONCLUSIONES: La administración preoperatoria de la asociación dexametasona con diclofenaco presenta una significativa mayor actividad analgésica en comparación a la administración preoperatoria de la asociación dexametasona con ketorolaco. Sin embargo, no hay diferencia significativa con relación a la tumefacción facial

OBJECTIVE: To evaluate the antiinflammatory effect of the association dexamethasone with diclofenac and the association dexamethasone with ketorolac in mandibular third molar surgery. MATERIAL AND METHOD: Randomized double blind clinical trial that included 75 patients who were randomly divided into three groups: the DK group received the dexamethasone association with ketorolac; the DD group, the dexamethasone association with diclofenac and the control group D, only dexamethasone; all intramuscularly, thirty minutes before surgery. The anti-inflammatory effect was determined by the evaluation of postoperative pain and swelling. The pain was evaluated by means of the analogous visual scale and the total analgesic consumption. Swelling was assessed by measures of facial swelling and mouth opening. RESULTS: The DD group showed less pain intensity at 4 h, 6 h, 12 h, 24 h and 48 h compared to the other treatment groups (p < 0.05). Total analgesic consumption was significantly lower in the DD group (1.20 ± 0.3) compared to the other treatment groups; p = 0.002. Facial swelling was similar in all study groups (p > 0.05). The DD group showed a significant greater oral opening only at 48 hours postoperatively compared to the other study groups (p = 0.01). CONCLUSIONS: The preoperative administration of the dexamethasone association with diclofenac has a significantly greater analgesic activity compared to the preoperative administration of the dexamethasone association with ketorolac. However, there is no significant difference in relation to facial swelling

Eficacia de la profilaxis antibiótica en la prevención de infecciones posquirúrgicas en la cirugía del tercer molar impactado / Efficacy of antibiotic prophylaxis to prevent postoperative infections in impacted third molar surgery

Introducción: La profilaxis antibiótica es controvertida, además que su uso inapropiado expone a los pacientes en riesgo de reacciones adversas y desarrollo de resistencia bacteriana. Objetivo: Realizar una revisión sistemática de ensayos clínicos aleatorizados que evaluaron le eficacia de la profilaxis antibiótica en la reducción de infecciones posoperatorias luego de la extracción de terceros molares impactados. Métodos: Fueron utilizadas las bases de datos ScienceDirect, Clinical trials.gov y Scopus para ubicar ensayos clínicos. Las variables primarias incluyeron: presencia de infecciones posoperatorias (de la herida y/o alveolitis), reacciones adversas, trismo y dolor. Se realizó un metaanálisis con los estudios homogéneos a través del análisis de efectos aleatorios. El riesgo de sesgo de los ensayos incluidos fue evaluado a través de la guía Cochrane. El riesgo relativo global fue calculado utilizando el enfoque del inverso de la varianza con el método de efectos aleatorios. Resultados: Fueron analizados cualitativamente 14 ensayos clínicos y 9 cuantitativamente. De un total de 874 pacientes, 49 (5,6 por ciento) presentaron infecciones posoperatorias (16/446 para el grupo experimental y 33/428 para el grupo placebo). El metaanálisis arrojó un riesgo relativo global de 0,5 (IC 95 por ciento: 0,27-0,94). El riesgo de sesgo para los estudios que utilizaron solo amoxicilina como medida profiláctica fue de 0,53 (IC 95 por ciento: 0,27-1,03). Las principales reacciones adversas incluyeron: diarreas, reacciones gastrointestinales, fiebre y dolor gástrico. Conclusiones: Los antibióticos sistémicos administrados antes de la cirugía fueron eficaces para reducir las frecuencias de aparición de infecciones posoperatorias luego de la extracción de terceros molares impactados(AU)

Introduction: Antibiotic prophylaxis is controversial, and its inappropriate use exposes patients to the risk of adverse reactions and the development of bacterial resistance. Objective: Carry out a systematic review of randomized clinical trials evaluating the efficacy of antibiotic prophylaxis for the reduction of postoperative infections after extraction of impacted third molars. Methods: The search for clinical trials was conducted in the databases ScienceDirect, Clinicaltrials.gov and Scopus. The primary variables considered were presence of postoperative infections (of the wound and/or alveolitis), adverse reactions, trismus and pain. A meta-analysis was made of homogeneous studies applying the random effects model. The risk of bias in the trials included was evaluated using the Cochrane guide. The inverse variance approach and the random effects method were used for estimation of the global relative risk. Results: Fourteen clinical trials were analyzed qualitatively and 9 quantitatively. Of the total 874 patients, 49 (5.6 percent:) developed postoperative infections (16 / 446 for the experimental group and 33 / 428 for the placebo group). The meta-analysis found a global relative risk of 0,5 (CI 95 percent: 0,27-0,94). Bias risk for studies using only amoxicillin as a prophylactic measure was 0,53 (CI 95 percent:: 0,27-1,03). The main adverse reactions were diarrhea, gastrointestinal reactions, fever and abdominal pain. Conclusions: The systemic antibiotics administered before the surgery were effective to reduce the frequency of appearance of postoperative infections after extraction of impacted third molars(AU)

Influencia del uso de inhaladores sobre la caries dental en pacientes pediátricos asmáticos: Estudio de casos y controles / Impact of inhaler use on dental caries in asthma pediatrics patients: A case-control study

Introducción. El asma es una enfermedad inflamatoria crónica con alta prevalencia en pacientes pediátricos. Existen resultados contradictorios respecto al efecto de esta enfermedad en los índices de caries dental. El objetivo del estudio fue determinar la prevalencia de caries dental en pacientes pediátricos asmáticos con medicación inhalatoria. Población y métodos. Estudio de casos y controles cuya muestra estuvo conformada por pacientes pediátricos que acudieron al Centro Médico Naval "Cirujano Mayor Santiago Távara" de diciembre de 2014 a marzo de 2015. Se dividieron en dos grupos: el primero (casos), integrado por pacientes asmáticos que utilizaban inhaladores en su tratamiento; el segundo (controles), por pacientes sanos del mismo nosocomio. Se realizó una evaluación médica para determinar tipo, tiempo y frecuencia del tratamiento y un examen oral para determinar la prevalencia de caries dental y el índice de dientes cariados, perdidos y obturados (CPOD). Resultados. Se encontró que la prevalencia de caries dental en el grupo control fue del 34,2 %, mientras, en el grupo casos, fue del 28,3 % (p = 0,094). Con respecto al índice de caries dental, el grupo control presentó CPOD de 4,73 ± 0,32, y el grupo casos, de 3,98 ± 0,31 (p = 0,08). Sin embargo, se evidenció que, a mayor tiempo de tratamiento con los inhaladores, el índice CPOD aumentaba significativamente (p = 0,04).Conclusiones. La medicación inhalatoria no incrementa la prevalencia de caries dental en pacientes pediátricos asmáticos. Sin embargo, existe una relación directa entre la duración del tratamiento y la prevalencia de caries dental

Introduction. Asthma is a chronic inflammatory disease that is highly prevalent among pediatric patients. The results about the effect of asthma on the rate of dental caries are contradictory. The objective of this study was to determine the prevalence of dental caries in asthma pediatric patients using inhaled drugs. Population and methods. Case-control study in a sample made up of pediatric patients who attended Centro Médico Naval "Cirujano Mayor Santiago Távara" between December 2014 and March 2015. Patients were divided into two groups: group A (cases) included asthma patients using inhalers as part of their treatment; group B (controls), healthy subjects who attended the same facility. A medical examination was done to determine the type, time, and frequency of treatment and an oral exam, to establish the prevalence of dental caries and the decayed, missing, and filled teeth (DMFT) index. Results. The prevalence of dental caries was 34.2 % in the control group and 28.3 % in the case group (p = 0.094). In relation to the rate of dental caries, the DMFT index in the control group was 4.73 ± 0.32, and 3.98 ± 0.31 in the case group (p = 0.08). However, it was evidenced that a longer duration of inhaler use led to a significantly higher DMFT index (p = 0.04).Conclusions. Inhaled drugs do not increase the prevalence of dental caries in asthma pediatric patients. However, there is a direct relationship between treatment duration and the prevalence of dental caries.