Frecuencia de Pseudomonas aeruginosa en bolsas periodontales de pacientes con Periodontitis Crónica / Frequency of Pseudomonas aeruginosa in periodontal pockets of patients with Chronic Periodontitis

La periodontitis crónica es una patología caracterizada por la destrucción de los tejidos de soporte del diente. Existe evidencia científica de la presencia en bolsas periodontales de Pseudomonas aeruginosa, bacteria que altera la microbiota subgingival. Ha sido asociada al fracaso en el tratamiento de la periodontitis y podría constituir un riesgo para la salud general de los pacientes. El objetivo de esta investigación fue determinar la frecuencia de P. aeruginosa en bolsas periodontales de pacientes con periodontitis crónica que acudieron a la cátedra de Periodoncia de la Universidad Autónoma de Asunción. El estudio fue observacional descriptivo de corte transversal, para el mismo fueron seleccionados pacientes con periodontitis crónica que cumplían con los criterios de inclusión. Las piezas dentariasseleccionadas para la toma de muestras fueron aisladas con rollos de algodón estéril, y una vez removida la placa bacteriana supragingival, se retiró la placa subgingival de las bolsas periodontales por medio de curetas de Gracey y se introdujeron en tubos de ensayo que contenían medio de Stuart, para luego llevar las muestras hasta el laboratorio de microbiología para su análisis. Del total de 14 muestras, solo una dio positivo a P. aeruginosa representando el 7,14%. El microrganismo aislado resultó resistente a los antibióticos utilizados como coadyuvantes en el tratamiento de la periodontitis crónica,al igual que en otros trabajos encontrados en la literatura internacional. La presencia de estas bacterias dificulta el control de la enfermedad periodontal y podría significar un riesgo para desarrollar infecciones oportunistas, especialmente en los pacientes inmunodeprimidos

Chronic periodontitis is a pathology characterized by the destruction of tooth supporting tissues. There is scientific evidence of the presence in periodontal pockets of Pseudomonas aeruginosa, a bacterium that alters the subgingival microbiota and that has been associated with failure to treat periodontitis and could constitute a risk to patient general health. The objective of this research was to determine the frequency of P. aeruginosa in periodontal pockets of patients with chronic periodontitis who attend the Chair of Periodontology at the Autonomous University of Asunción. Descriptive, cross-sectional observational study, in which patients with chronic periodontitis who met the inclusion criteria were selected. The pieces selected for sampling were isolated with sterile cotton rolls, and once the supragingival bacterial plaque had been removed, the subgingival plaque was removed from the periodontal pockets by means of Gracey curettes and placed in test tubes containing Stuart medium, then the samples were taken to the microbiology lab for analysis. Of the total of 14 samples, only one was positive for P. aeruginosa, representing 7.14%. The isolated microorganism was resistant to the antibiotics used as adjuvants in the treatment of chronic periodontitis, as in other studies found in the international literature. The presence of these bacteria makes it difficult to control periodontal disease and could pose a risk for developing opportunistic infections, especially in immunosuppressed patients

Técnicas de afastamento gengival em prótese dental: revisão da literatura / Gingival retraction methods in dental prosthesis: literature review

A proposta desta revisão da literatura foi avaliar as técnicas empregadas no afastamento gengival para prótese dental incluindo métodos mecânicos, químicos-mecânicos e cirúrgicos. A técnica de afastamento gengival deve ser previamente avaliada pelo profissional e a sua indicação, dependerá de cada situação clínica. Nesta revisão foram apresentadas as vantagens e desvantagens das técnicas de afastamento gengival incluindo fio afastador embebido ou não em soluções químicas, técnicas cirúrgicas, procedimentos a base de laser, curetagem gengival e eletro cirurgia. Após a realização desta revisão verificamos que o método químico-mecânico é o mais utilizado pelos profissionais. Atualmente podemos considerar que mesmo com a utilização de tecnologias mais elaboradas, como por exemplo scanners intraorais, quando o término do preparo dental estiver ao nível gengival ou subgengival se faz necessário o afastamento gengival. Para atingir o sucesso de uma prótese dental e importante coexistir uma harmonia entre a prótese e os tecidos periodontais circunvizinhos. (AU)

The aim of this review was to assess the use of gingival retraction methods in the fixed tooth supported prosthesis including mechanical, chemicals-mechanical and surgical methods. The choice of the best gingival retraction technique should be considered previously by the professional and it depends of each individual clinical conditions. In this review were discussed the advantages and the disadvantages of each gingival retraction technique including mechanical, chemical and surgical methods. In this review, we could understand that chemicals-mechanical technical is the most indicate by dentists. Nowadays, we can consider that even with the hightech use in dental area, such as intraoral scanners, when the margin of the restoration is placed sub-gingivally the gingival retraction should be considered. For the successful in dental prosthesis, a healthy coexistence between the restoration and their surrounding periodontal structure should be the goal of a prosthodontist. (AU)

Efectos del raspaje y alisado radicular a boca completa con azitromicina sobre los niveles de proteina C reactiva ultra sensible, parametros clínicos y microbiológicos periodontales. Ensayo clinico aleatorizado / High sensitive- C reactive protein, periodontal parameters and periodontal microbiota after scaling-root planning plus Azithromycin as treatment of Chronic Periodontitis: A Randomized Clinical Trial

Objetivo: El propósito de este ensayo clínico controlado aleatorizado simple ciego fue determinar el efecto del raspaje y alisado radicular en una sesión adjunto a azitromicina oral, sobre los niveles de proteína C reactiva ultra sensible y otros biomarcadores sanguíneos, parámetros clínicos y microbiológicos periodontales en pacientes con periodontitis crónica tres meses después del tratamiento. Materiales y Métodos: 49 sujetos con periodontitis crónica participaron en el estudio y fueron asignados aleatoriamente en dos grupos de 27 pacientes, el grupo intervención recibió raspaje y alisado ra- dicular adjunto a azitromicina (RAR+Azi) 500 mg/día por cinco días, y el grupo con- trol recibió raspaje y alisado radicular más placebo (RAR+Pb), ambos tratamiento en sesión única. Los grupos de periodontitis recibieron un examen periodontal a boca completa, análisis de sangre y cultivos microbiológicos al inicio del estudio y tres meses después del tratamiento. Se incluyó un grupo referencia de 25 pacientes perio- dontalmente sanos tomando muestras sólo al inicio. La variable principal de desenlace fue la variación de la proteína C reactiva ultra sensible. Las variables de resultado secundarias fueron la variación de triglice - ridos, colesterol de alta densidad (HDL), colesterol de baja densidad (LDL), glucosa en ayunas, profundidad al sondaje (PS) y composición microbiana. Resultados: La terapia RAR+Azi no redujo significativamente los niveles plas - máticos de hsPCR, sin embargo, se observó una tendencia positiva (4,33 a 2,99 mg/L). Este grupo obtuvo también una mayor re- ducción en PS, índice arterial y frecuencia de detección de Porphyromonas gingivalis y Prevotela intermedia en comparación con el grupo RAR+Pb (p<0.05). Los otros pa- rámetros sanguíneos no cambiaron signifi - cativamente. En contraste, el grupo control aumentó los niveles de hsPCR después de la terapia y en algunos casos se detectó un aumento de PS. Conclusiones: La terapia de RAR+Azi ofrece a corto plazo beneficios clínicos y microbiológicos comparado a RAR solo. No se encontraron diferencias significati - vas en los niveles de hsPCR. Es necesario realizar estudios con mayor tiempo de seguimiento para confirmar o rechazar la hipótesis que el tratamiento periodontal solo o con antibióticos generan efectos en los niveles de hsPCR y otros marcadores de riesgo cardiovascular...(AU)

Objective: This single blind randomized clinical trial (RCT) determined the effect of scaling and root planning plus azithromycin (SRP+Azi) in serum C reactive protein levels and other blood biomarkers, clinical periodontal parameters and subgingival microbial composition three months after periodontal therapy. Materials and Methods: Forty-nine chronic periodontitis patients participated in the study and were randomly assigned Recibido para publicación: Octubre 09 de 2016 Aceptado para publicación: Diciembre 07 de 2016 Correspondencia: JE, Soto, Universidad del Valle jesotofranco@gmail.com R E V I S T A ESTOMATOLOGIA Artículo original La Revista Estomatología usa la licencia Creative Commons de Atribución ­ No comercial ­ Sin Derivar 4.0 Internacional; de tal forma que los textos de la revista pueden ser descargados en ver - sión PDF siempre que sea reconocida la autoría y el texto no tenga modificaciones de ningún tipo. Volumen 24 Nº 2 2016 15 to a test group of 27 patients received one session of scaling and root planning plus oral azithromycin 500 mg daily for five days (SRP+Azi) while, 27 patients in the control group received the same single session of scaling and root planning plus placebo (SRP+Pb). A group of 25 subjects presenting periodontal health-gingivitis were included as a comparison group and in them was determined clinical periodontal parameters, blood parameters and micro - biota at baseline. Periodontitis groups recei - ved a full mouth periodontal examination, blood test and microbiological cultures at baseline, and three months after therapy. Primary outcome variable was the variation in serum high sensitive C- reactive protein (hs-CRP). Secondary outcome variables were variation of triglycerides, High density Cholesterol (HDL), low density Cholesterol (LDL), fasting glucose, pocket depth and microbial composition. Results: Therapy with SRP+Azi do not significantly reduce the plasmatic levels of hs-CRP however, a positive trend was noti - ce (4,33 to 2,99 mg/l). This group obtained also greater reduction of pocket depth (PD), artery index and P. gingivalis and P inter - media detection frequency when compared to the SRP-placebo group (p<0.05). Other blood biochemistry parameters did not changed significantly in the test group. In contrast, the control group increased the hs- CRP levels after therapy and in some cases a increase of pocket depth was detected. Conclusions: Combined SRP+Azi therapy in chronic periodontitis did not reduced hs- CRP serum level significantly after three months. However, this group reduced signi - ficantly their probing pocket depth, reduced P. gingivalis and P intermedia frequency and increased clinical attachment gain.

Efecto preventivo de los agentes desensibilizantes en pacientes con indicaciones de raspado y alisado radicular / Preventive effect of desensitizing agents on patients with indications of scaling and root planning treatment

La hipersensibilidad dentinaria (HD) posterior al raspado y alisado radicular (RAR) ha sido poco estudiada desde una perspectiva preventiva a pesar de su relevancia clínica. El objetivo de esta investigación fue evaluar el efecto de las cremas desensibilizantes en pacientes con indicaciones de raspado y alisado radicular. Para ello, se realizó un estudio longitudinal cuasi-experimental con una muestra no probabilística de 18 pacientes (hombres y mujeres) entre 20 y 50 años de edad, que requerían tratamiento con RAR en dientes posteriores (premolares y primer molar), quienes fueron asignados al azar en cada uno de los tres grupos a evaluar. Las cremas desensibilizantes utilizadas en esta investigación contienen citrato de potasio, nitrato de potasio, fluoruro de sodio y triclosan estas se indicaron un mes antes de realizar los RAR en todos los grupos. Para medir la presencia de hipersensibilidad dentinaria se aplicaron estímulos táctiles y térmicos a los 8, 15 y 22 días posteriores al tratamiento de RAR y se usó la Escala Visual Análoga Graduada (EVAG) para evaluar el dolor. Como resultado se obtuvo menor presencia de HD en el grupo que utilizó citrato de potasio 5.04% y monofluorfosfato 1.1%, aun cuando en los tres grupos se observó disminución de HD durante los tres periodos de medición. Llegando a la conclusión que es pertinente prescribir cremas desensibilizantes con citrato de potasio 5.04% y monofluorfosfato 1.1% a los pacientes con necesidades clínicas similares a los de este estudio un mes antes de planificar los RAR.

The presence of dentine hypersensitivity (DH) after scaling and root planning treatment (RPT) has been scarcely studied from a preventive perspective in spite the clinical relevance of the issue. The aim of this research was to evaluate the preventive effect of some desensitizing dentifrices in patients previous to a RPT. In this sense, a cuasi-experimental, longitudinal study was performed. The non probabilistic sample was constituted by 18 patients (women and men) aged between 20 and 50; all of them diagnosed as requiring scaling and root planning treatment for posterior teeth (premolars and first molars). Subjects were randomly assigned to one of the three groups. The desensitizing toothpaste used in the study contained potassium citrate, potassium nitrate, sodium fluoride and triclosan. These paste were prescribed for patients a month before the RPT. Dentine hypersensitivity was evaluated by using tactile and thermal stimuli applied 8, 25 and 22 days after RPT; the Visual Analogue Scale (VSA) was used to assess pain. Results showed lower presence DH in the 5.04% potassium citrate group and 1.1% monofluor fosfate, even when there was a decrease of DH for the three measurement periods. It was concluded that it would be good to prescribe 5.04% potassium citrate group and 1.1% monofluorfosfate desensitizing agents to patients with clinical needs similar to the ones described in this study, a month before the RPT.

Steroidal and non-steroidal cyclooxygenase-2 inhibitor anti-inflammatory drugs as pre-emptive medication in patients undergoing periodontal surgery

The aim of the present study was to compare the pre-emptive use of a cyclooxygenase-2 (COX-2) inhibitor with a well established steroidal anti-inflammatory drug for pain and edema relief following periodontal surgery for crown lengthening. Thirty patients requiring periodontal surgery were randomly assigned to receive one of the following medications: selective COX-2 inhibitor or steroidal anti-inflammatory drug, 60 min before the surgical procedure. To examine patient anxiety, a Corah's dental anxiety scale was applied before surgery. Using a visual analog scale, the extent of pain/discomfort during the trans-operative period and immediately after the surgery was measured. Additionally, intensity of pain/discomfort and edema were examined 4, 8, 12 and 24 h postoperatively. With regard to anxiety, no statistical differences between the groups were observed (p>0.05). With respect to the extent of pain/discomfort during the trans-operative, immediate and late postoperative period, data demonstrated no significant differences (p>0.05) between the COX-2 inhibitor and steroidal groups. With regard to edema, intragroup analysis did not reveal any statistically significant difference (p>0.05) during the 24 h following surgery in either group. In conclusion, both anti-inflammatory drugs presented a similar potential for pain and edema relief following periodontal surgery.

O objetivo do presente estudo foi comparar a utilização pré-emptiva de medicamento inibidor da COX-2 (cicloxigenase-2) com uma droga antinflamatória esteroidal amplamente utilizada, para o controle da dor e edema após cirurgia periodontal para aumento de coroa. Trinta pacientes que necessitavam de cirurgia periodontal foram aleatoriamente designados a receber uma das seguintes medicações: inibidor seletivo da COX-2 ou a droga antinflamatória esteroidal, 60 min antes do procedimento cirúrgico. Para avaliar a ansiedade do paciente, a escala de ansiedade ao tratamento dental de Corah foi aplicada antes da cirurgia. Com a utilização de escala analógica visual a extensão de dor/desconforto durante o período trans-cirúrgico e imediatamente após a cirurgia foi mensurada. Adicionalmente, a intensidade de dor/desconforto e edema foram avaliados no periodo pós-operatório tardio 4, 8, 12 e 24 h após o procedimento cirúrgico. Com relação à ansiedade, não foi observada diferença estatística entre os grupos (p>0,05). Com relação à extensão de dor/desconforto durante os períodos trans-cirúrgico e pós operatório imediato e tardio, os dados não demonstraram diferenças entre o grupo que recebeu o inibidor seletivo da COX-2 e o aintinflamatório esteroidal (p>0,05). A avaliação do edema, intragrupo, não revelou diferença estatística durante as primeiras 24 h em nenhum dos grupos estudados (p>0,05). Em conclusão, ambas as drogas antiinflamatórias utilizadas apresentaram um potencial similar no controle da dor e edema após cirurgia periodontal.

Effectiveness of non-surgical treatment to reduce il-18 levels in the gingival crevicular fluid of patients with periodontal disease

The aim of this study was to evaluate the effectiveness of the non-surgical periodontal treatment in reducing the gingival crevicular fluid (GCF) levels of IL-18 from inflamed periodontal sites. Fourteen patients with periodontal disease were included, being 9 patients with chronic periodontitis (mean age: 48.8 SD ± 7.4 years) and 5 patients with gingivitis (mean age: 43.6 SD ± 11.8). The patients were divided in the following groups: gingivitis sites from periodontitis patients (sites GP), periodontitis sites from periodontitis patients (sites PP), and gingivitis sites from gingivitis patients (sites GG). Probing pocket depth (PPD), probing attachment level (AL), plaque index (PI) and gingival index (GI) were recorded, and gingival fluid samples were collected. The subjects received non-surgical treatment and were re-evaluated 30 days after treatment (day 30 AT). There was a significant reduction in PI in GG (1.0 ± 0.4 to 0.5 ± 0.2), GP (1.2 ± 0.3 to 0.5 ± 0.3), and in PP (1.3 ± 0.4 to 0.7 ± 0.3) 30 AT. There was also a significant reduction in the GI in GG (1.3 ± 0.3 to 0.7 ± 0.4). PPD reduced significantly in GG (2.4 ± 0.6 to 1.9 ± 0.1), and PP (6.7 ± 1.1 to 5.2 ± 0.9) 30 AT. When all the samples were analyzed together, there was a significant reduction in IL-18 (12.9 ± 7.2 to 10.0 ± 3.1). This study showed that non-surgical treatment was effective in reducing GCF levels of IL-18 from inflamed periodontal sites.

O objetivo desse estudo foi avaliar o efeito do tratamento periodontal não-cirúrgico sobre os níveis da IL-18 em sítios inflamados de pacientes com doença periodontal. Foram avaliados 14 pacientes com doença periodontal, sendo 9 pacientes com periodontite crônica generalizada (idade média: 48,8 DP ± 7,4 anos) e 5 pacientes com gengivite (idade média: 43,6 DP ± 11,8 anos). Os pacientes foram divididos nos seguintes grupos: sítios sem perda de inserção nos pacientes com periodontite (GP), sítios com perda de inserção nos pacientes com periodontite (PP) e sítios sem perda de inserção nos pacientes com gengivite (GG). Profundidade de bolsa (PB), nível de inserção (NI), índice de placa (IP) e índice gengival (IG) foram avaliados e amostras do fluido gengival foram coletadas. Os pacientes receberam terapia não-cirúrgica e foram reavaliados 30 dias após tratamento (AT). Houve uma redução significante no IP dos GG (1,0 ± 0,4 para 0,5 ± 0,2), GP (1,2 ± 0,3 para 0,5 ± 0,3) e PP (1,3 ± 0,4 para 0,7 ± 0,3) 30 AT. Também houve uma redução significante no IG do GG (1,3 ± 0,3 para 0,7 ± 0,4). A profundidade de bolsa reduziu no GG (2,4 ± 0,6 para 1,9 ± 0,1) e no PP (6,7 ± 1,1 para 5,2 ± 0,9) 30 AT. Quando todas as amostras foram analisadas juntas, houve uma redução significante do IL-18 (12,9 ± 7,2 para 10,0 ± 3,1). Esse estudo mostrou que a terapia periodontal não-cirúrgica é eficaz em reduzir os níveis de IL-18 no fluido gengival de sítios inflamados.

Glass ionomer cement as an occlusive barrier in Class III furcation defect.

Predicting the prognosis of molars that have experienced furcation invasion, is often a frustrating experience to the dental clinician and disappointing report to the patient involved. Although multiple treatment modalities have been attempted to retain teeth with severe furcation invasion, clinical success has not been predictable. A case report involving the use of glass ionomer cement (GIC) as an occlusive barrier in the management of Class III furcation defect involving mandibular first molar is presented. A literature review on the subject matter was conducted using Medline, Google search engines, and manual library search. GIC restoration of Class III furcation invasion gives a satisfactory result. Surgical and nonsurgical treatment options are available for the management of the condition. GIC as an occlusive barrier in Class III furcation invasion is an economical and less invasive treatment option. It also makes home care easy for the patient.

Tratamiento para lesiones de furcación clase I: plastia furcal / Treatment of class I furcation lesion: furcation plasty

Los defectos en furcaciones representan un gran reto para los terapistas debido a sus características anatómicas y a su variabilidad en cuanto a la forma de respuesta al tratamiento. La pérdida de inserción se desarrolla en sentido horizontal o vertical del área. Un amplio rango de modalidades de tratamiento han sido dirigidos a mantener esta área anatómica: debridamiento mecánico no-quirúrgico y quirúrgico, plastia furcal, procedimientos de tunelización, hemisecciones, amputaciones radiculares y tratamiento regenerativos. El propósito del presente reporte de caso es mostrar la eficacia de la plastia furcal como tratamiento para lesiones de furcación Clase I.

Furcation defects represent a challenge for therapists due to their anatomical characteristics and its variability in the form of response to treatment. Consequently, loss attachment develops in horizontal and vertical direction in this area. A wide range of treatment modalities have been directed to maintain this anatomical area: non-surgical and surgical mechanical debridement, furcation plasty, tunneling procedures, hemisection, root amputation and regenerative therapy. The purpose of this report is to show the effectiveness of the furcation plasty as a treatment for Class I furcation lesions.

Effect of instrumentation using curettes, piezoelectric ultrasonic scaler and Er,Cr:YSGG laser on the morphology and adhesion of blood components on root surfaces: a SEM study

This study used scanning electron microscopy (SEM) to evaluate the morphology and adhesion of blood components on root surfaces instrumented by curettes, piezoelectric ultrasonic scaler and Er,Cr:YSGG laser. One hundred samples from 25 teeth were divided into 5 groups: 1) Curettes; 2) Piezoelectric ultrasonic scaler; 3) Curettes plus piezoelectric ultrasonic scaler; 4) Er,Cr:YSGG laser; 5) Curettes plus Er,Cr:YSGG laser. Ten samples from each group were used for analysis of root morphology and the other 10 were used for analysis of adhesion of blood components on root surface. The results were analyzed statistically by the Kruskall-Wallis and Mann-Whitney tests with a significance level of 5 percent. The group treated with curettes showed smoother surfaces when compared to the groups were instrumented with piezoelectric ultrasonic scaler and the Er,Cr:YSGG laser. The surfaces instrumented with piezoelectric ultrasonic scaler and Er,Cr:YSGG laser, alone or in combination with hand scaling and root planing, did not differ significantly (p>0.05) among themselves. No statistically significant differences (p>0.05) among groups were found as to the adhesion of blood components on root surface. Ultrasonic instrumentation and Er,Cr:YSGG irradiation produced rougher root surfaces than the use of curettes, but there were no differences among treatments with respect to the adhesion of blood components.

Esse estudo utilizou microscopia eletrônica de varredura (MEV) para avaliar a morfologia e a adesão de elementos sanguíneos em superfícies radiculares instrumentadas com curetas, ultrassom piezoelétrico e laser de Er,Cr:YSGG. Foram utilizadas no presente estudo 100 amostras provenientes de 25 dentes que foram divididas em 5 grupos: 1) Raspagem manual com curetas; 2) Raspagem com ultrassom; 3) Associação instrumento manual e ultrassom; 4)Irradiação do laser de Er,Cr:YSGG;5)Associação raspagem manual com irradiação com laser de Er,Cr:YSGG. Dez amostras de cada grupo foram utilizadas para análise da morfologia e as outras 10 foram utilizadas para a análise de adesão de elementos sanguíneos. As eletromicrografias foram analisadas através dos escores de adesão de elementos sanguíneos e pelo índice de morfologia radicular e os resultados foram analisados estatisticamente através dos testes de Kruskall-Wallis e de Mann-Whitney com nível de significância de 5 por cento. O grupo que foi tratado com instrumentos manuais apresentou superfície mais lisa em relação aos grupos que foram instrumentados com ultrassom e com o laser de Er,Cr:YSGG. As superfícies instrumentadas com ultrassom e com o laser de Er,Cr:YSGG de forma isolada ou associada a raspagem manual não apresentaram diferenças estatísticas entre si (p>0,05). Não houve diferenças estatísticas entre os grupos em relação a adesão de elementos sanguíneos(p>0,05). A instrumentação ultrassônica e a irradiação com o laser de Er,Cr:YSGG produziram superfícies radiculares mais rugosas em relação a raspagem com curetas, porém não houve diferenças entre os tratamentos com relação à adesão de elementos sanguíneos.

Treatment of chronic periodontitis decreases serum prohepcidin levels in patients with chronic kidney disease

OBJECTIVE: To determine the impact of periodontal treatment on serum levels of prohepcidin (the prohormone of hepcidin) and systemic inflammation markers, as well as correlations among these markers, in patients with chronic periodontitis and chronic kidney disease who were not undergoing dialysis. METHODS: We included 56 chronic periodontitis patients, 36 with chronic kidney disease and 20 without systemic diseases and with normal renal function (control group). Chronic kidney disease was defined as suggested by the clinical practice guidelines in the National Kidney Foundation. Chronic periodontitis was defined through clinical attachment level and by probing pocket depth, according to the American Association of Periodontology. The inflammatory markers ultrasensitive C-reactive protein, interleukin-6, and prohepcidin were evaluated before and 3 months after periodontal treatment. RESULTS: The efficacy of periodontal treatment was confirmed by the improvement in clinical parameters of chronic periodontitis in the control and chronic kidney disease groups. Periodontal treatment resulted in significant reductions in ultrasensitive C-reactive protein, interleukin-6 and serum prohepcidin levels in both groups. Moreover, in multivariate linear regression, the reduction in prohepcidin after periodontal treatment was significantly and independently associated with interleukin-6 levels in the control group. CONCLUSIONS: By inducing a decline in the systemic inflammatory response and a decrease in serum prohepcidin, successful periodontal treatment may represent an important means of ameliorating the inflammatory burden seen in patients with chronic kidney disease.

Raspaje y alisado radicular en pacientes fumadores con periodontitis crónica moderada-severa: efectos clínicos y microbiológicos / Scaling and Root Planing in smoker patients with Moderate to Severe Chronic Periodontitis: Clinical and microbiological effects

Objetivo: Se realizó un estudio piloto para determinar la eficacia, a nivel clínico y microbiológico, del raspaje y alisado radicular en una sesión vs. varias sesiones, y la comodidad ante el tratamiento, en pacientes fumadores con periodontitis crónica moderada a severa. Materiales y Métodos: Ingresaron nueve pacientes fumadores, de ambos sexos, entre 40 y 70 años, sistémicamente sanos, con bolsas periodontales ≥4mm, pérdida de inserción, sangrado al sondaje, diagnosticados con periodontitis crónica moderada a severa según los criterios de la American Academy of Periodontology (A.A.P.). Fueron asignados aleatoriamente a dos grupos, para raspaje y alisado radicular, grupo A en una sesión, Grupo B a intervalos de una semana por cada cuadrante. Se midió la profundidad de bolsa, el nivel de inserción clínico, sangrado al sondaje; se tomaron muestras de placa bacteriana subgingival para cultivo microbiológico pre y seis meses después del tratamiento; se indagó acerca de la comodidad durante el procedimiento con una encuesta. Resultados: De las variables clínicas analizadas, en grupo A se observó disminución de profundidad de bolsas en 0.88mm, nivel de inserción clínico en 1.12mm, sangrado al sondaje en 7.52% respecto a los promedios iniciales; en grupo B, no se observaron diferencias respecto a las mediciones iniciales en contraste con el sangrado al sondaje que disminuyó en 0,50%. En ambos grupos se encontró reducción en la prevalencia de: Aggregatibacter actinomycetemcomitans (33%), Porphyromonas gingivalis (22%), Prevotella intermedia (22%), Fusobacterium species (55%), Eikenella corrodens (44%), Bacilos entéricos Gram negativos (11%). El grupo B refirió mayor comodidad que el grupo A durante el tratamiento. Conclusiones: Aunque no hubo diferencias estadísticamente significativas, hubo una tendencia que mostró que el raspaje y alisado radicular en una sesión obtuvo mejor eficacia clínica y microbiológica que el raspaje y alisado radicular por sesiones, aunque mostró menor comodidad durante el procedimiento.--(AU)

Aim: A pilot clinical trial was performed to determine (i) microbiological and clinical efficacy (ii) confort of One Stage scaling and root planing vs. multiple SRP sessions, in smoker patients with chronic periodontitis. Materials and Methods: Nine smoker patients, men and women, between 40 to 70 years old, systemically health, with mean deep pocket ≥4mm, attachment loss, bleeding on probing, diagnosed with chronic periodontitis moderate to severe based on American Academy of Periodontology (A.A.P.), were randomized into two groups for scaling and root planing, group A for full-mouth, and group B per one week. Deep pocket, clinical attachment lost, bleeding on probing was measured. Subgingival samples were taken from deepest pockets before and six months after treatment. Patients were asked with a survey about comfort of the treatment in both groups. Results: Group A showed mean deep pocket decreased in 0.88mm, clinical attachment lost in 1.12mm, bleeding 7.52% initial average respect. Group B, did not show changes respect initial measures, in contrast with bleeding, it has decreased in 0.5%. Both groups had showed similar decrease in prevalence of: Aggregatibacter actinomycetemcomitans (33%), Porphyromonas gingivalis (22%), Prevotella intermedia (22%), Fusobacterium species (55%), Eikenella corrodens (44%), Gram negative enteric rods (11%). Group B has referred better comfort than group A, during the treatment. Conclusions: Although there was no statistically significant differences, there was a trend showing that the Full-mouth scaling and root planning got better clinical and microbiologicalefficacy than scaling and root planing in multiple sessions, but had shown lower comfort around the treatment...(AU)

Calcium phosphate cement as a "barrier-graft" for the treatment of human periodontal intraosseous defects.

Background : Calcium phosphate cements (CPC) are apparently good candidates for periodontal treatment by virtue of their biocompatibility, mouldability and osteoconductivity. However, the clinical efficacy in this regard has not been established. This study is aimed at the evaluation of the efficacy of a formulation of CPC in healing human periodontal intraosseous defects in comparison with hydroxyapatite ceramic granules. Materials and Methods : In this clinical study, 60 patients with periodontal defects were divided into 2 test groups and 1 control group. The defect sites in the test groups were repaired with CPC and hydroxyapatite ceramic granules (HAG). Debridement alone was given in the control group. The progress was assessed at 3, 6, 9 and 12 months observation intervals through soft tissue parameters (probing depth, attachment level and gingival recession). Results: CPC showed significantly better outcome. Probing depth reduction values of CPC, HAG and Control at 6 months were 5.40 ± 1.43, 3.75 ± 1.71 and 2.90 ± 1.48, and those at 12 months were 6.20 ± 1.80, 4.5 ± 1.91 and 2.95 ± 1.73. Clinical attachment gain values of CPC, HAG and Control at 6 months were 5.15 ± 1.50, 3.45 ± 1.96 and 2.25 ± 1.52, and those at 12 months were 5.80 ± 2.02, 3.55 ± 2.06 and 2.30 ± 1.78, In both cases the P value was <0.001 showing high significance. The gingival recession over 12 months, for the CPC group is lesser than that in the HAG group and the value for the control group is marginally higher than both. Soft-tissue measurements were appended by postoperative radiographs and surgical re-entry in selected cases. Conclusions: Calcium phosphate cement is found to be significantly better than hydroxyapatite ceramic granules. The material could be considered as a "barrier-graft".

Curetagem de lesões periapicais refratárias com simultânea obturação dos canais radiculares / Curretage of refractory periapical lesions with simultaneous root canal filling

Após episódio traumático, desenvolveram-se duas extensas lesões periapicais associadas aos dentes 11 e 21, com acentuado abaulamento, consistente e indolor das respectivas corticais ósseas vestibulares. Após patência apical, verificou-se copiosa e persistente drenagem de exsudato seroso-sanguinolento. A punção aspirativa das lesões periapicais proveu 10mL do referido exsudato inflamatório. Esse quadro clínico-patológico persistiu após preparo biomecânico e medicação intracanal com pasta à base de hidróxido de cálcio. A intervenção cirúrgica constou de curetagem periapical associada à obturação simultânea dos canais radiculares. O laudo histopatológico confirmou lesão cística. Em prosservação, verificou-se ausência de sintomotalogia dolorosa, resolução dos abaulamentos das corticais alveolares, bem como completa reparação óssea periapical.

The effect of chlorhexidine on reduction of viable organisms in aerosol produced by ultrasonic scaler / 대한치주과학회지

PURPOSE: The aerosol generated by ultrasonic scaler can contain bacteria or virus which can penetrate into body through respiratory systems of dentists, dental hygienist or patients. The aim of this study is to evaluate the effect of chlorhexidine digluconate as preoperative mouthrinse or lavage for ultrasonic scaler on the reduction of viable organisms in aerosol produced during periodontal treatment using ultrasonic scaler. METHODS: 30 patients with moderate chronic periodontitis were included and divided into 3 groups: Control (no preoperative mouthrinse and tap water as lavage), CHG (preoperative mouthrinse with 0.1% chlorhexidine digluconate and tap water as lavage), CHL (no reoperative mouthrinse and 0.1% chlorhexidine digluconate as lavage). Each patient received scaling or subgingival curettage for 30 min. In CHG group, mouthrinse with chlorhexidine digluconate was performed for 1 min. before treatment. Before, during and after scaling or subgingival curettage, air sampling was performed for 7 min. each (1000 L/7 min.) with trypticase-soy agar plate. Agar plates were incubated in 37degrees C aerobically. The numbers of colony-forming units (CFU) were counted and compared. RESULTS: The numbers of CFUs of the samples obtained during treatment were 97+/-14.0 in control, 73.1+/-14.9 in CHG group and 44.5+/-9.0 in CHL group. The difference among the 3 groups was determined to be statistically significant (one-way ANOVA with Bonferroni's correction, p-value: 0.0003). In contrast, the numbers of CFU of samples obtained before and after treatment were not significantly different among the groups. CONCLUSIONS: Chlorhexidine digluconate used as preoperative mouthrinse or lavage for ultrasonic scaler can reduce the microorganisms in aerosol produced during periodontal treatment using ultrasonic scaler. Less number of microorganisms were detected when chlorhexidine was used as lavage for ultrasonic scaler.

Métodos para el desplazamiento gingival aplicados en prótesis fija / Gingival displacement methods applied in fixed prosthesis

El desplazamiento gingival consiste en retraer el tejido gingival con la finalidad de despegar temporalmente el margen gingival de la preparación dentaria. Igualmente se describe con el nombre de retracción gingival, ambos nombres son empleados dentro de la literatura. Para la realización de este procedimiento han sido descripto diferentes métodos. La terminación cervical de la preparación llevada dentro del surco gingival debe ser impresionada, para ello un volumen mínimo de material de impresión se debe interponer entre la encía y diente, para que se logren márgenes bien definidos en la impresión y por consecuencia troqueles confiables. En este trabajo se presentan métodos de desplazamiento gingival, los principios a tener en cuenta para su realización y las pautas a seguir pues el objetivo es lograr el desplazamiento y proporcionar un espacio tanto en sentido lateral y vertical entre el margen y la terminación gingival de modo tal que el material de impresión penetre en suficiente cantidad para obtener una copia fiel y lo más exacta posible de la preparación, así mismo controlar los fluídos gingivales sin ocasionar perjuicio de los tejidos periodontales. El objetivo de la presente revisión es explicar los conceptos básicos y los principios en los que se fundamenta el desplazamiento gingival y los métodos que se utilizan (CIB) el propósito de presentar un guía de trabajo que permita la obtención de troqueles que reproduzcan fielmente la preparación dentaria y de ese modo cumplir con uno de los preceptos de la prótesis fija que establece devolver estética y función pero teniendo en cuenta la preservación y la salud de los tejidos gingivales.

Fibroma ossificante periférico: relato de caso / Peripheral Ossifying Fibroma: Case Report

O fibroma ossificante periférico é uma massa gengival na qual são encontrados focos calcificados, supostamente formados por osso metaplásico, bem delimitado, com base séssil ou pediculada, tendo a mesma coloração da mucosa ou um pouco avermelhada, sendo que sua superfície pode estar intacta ou ulcerada. Há uma predileção pelo sexo feminino e pela região anterior de maxila e mandíbula. Este trabalho relata um caso de fibroma ossificante periférico atípico, localizado na região de molares mandibulares, em uma paciente na 3ªdécada de vida. A lesão apresentava comportamento bastante agressivo, havendo destruição das estruturas de suporte dos dentes envolvidos, além da localização pouco comum. O tratamento realizado foi a excisão da lesão com curetagem do osso envolvido. A paciente encontra-se em controle

The peripheral ossifying fibroma is a gingival mass containing calcified material, probably metaplasic bone. It is well-delimited, sessile or pedunculated, reddish or of the same color of the mucosa, with a smooth or ulcerated surface. It has a predilection for females and for the anterior region of maxilla and mandible. This paper reports an atypical case of peripheral ossifying fibroma on the mandibular molar region of a patient inthe third decade of life. Besides being located at an uncommon site, the lesion presented a quite aggressive behavior, showing destruction of the supporting structures of the teeth involved. The treatment performedwas excision of the lesion with curettage of the bone involved. The patient is under control

Clinical case reports of cemental tear / 대한치주과학회지

PURPOSE: Cemental tear is an uncommon form of root fracture that can lead to rapid localized attachment loss. When it is exposed in the periodontal pocket, it should be removed to prevent accumulation of dental plaque and calculus. MATERIAL AND METHODS: 2 patients were diagnosed as a cemental tear and they were treated with conventional flap operation and subgingival curettage. Additional treatments such as bone graft or guided tissue regeneration were not performed. RESULT: Symptoms subsided after the treatment. Periodontal pocket has been reduced but no gain of clinical attachment was observed. Remnant of cemental fragment remained after curettage. However, periodontal pocket was stably maintained and there was no recurrence. CONCLUSION: Periodontal attachment loss associated with cemental tear can be successfully treated with conventional periodontal surgical and nonsurgical procedures.

A presença do Helicobacter pylori na placa dental: estudo prospectivo / The presence of Helicobacter pylori in the dental plaque: prospective study

Objetivo: Avaliar a presença do Helicobacter pylori (Hp) na placa dental subgengival relacionada com status periodontal dos pacientes submetidos a terapia antimicrobiana específica para esse patógeno. Métodos: A partir de uma amostra de 105 pacientes com diagnóstico de gastrite que coletaram placa subgengival no primeiro exame, somente 18 retornaram para segunda coleta de placa subgengival após a terapia antimicrobiana preconizada para o tratamento do Helicobacter pylori. Resultados: Não há associação significativa entre a positividade na cultura para o Hp e o tipo de doença periodontal (gengivite e periodontite). A prevalência da presença de Hp na placa dentária de pacientes com periodontite é 2,16 vezes maior que na dos com gengivite. Conclusão: O biofilme subgengival atua como reservatório desse patógeno e a periodontite parece ser um fato r de risco para o Helicobacter pylori na placa subgengival. Os autores concluem que são necessárias mais pesquisas para afirmar que a presença do Helicobacter pylori na placa dental represente provável fonte de reinfecção para essa bactéria.

Procedimentos mucogengivais para cobertura radicular. Revisão de literatura / Mucogingival procedures for root coverage. Literature review

A recessão gengival é um processo patológico de etiologia multifatorial. O cirurgião-dentista pode lançar mão de diversas técnicas mucogengivais para tratar as recessões gengivais. O estudo apresenta as técnicas cirúrgicas mucogengivais utilizadas para o recobrimento radicular e discute suas vantagens e desvantagens