Research progress on direct pulp capping of primary teeth / 口腔疾病防治

@#The timely treatment of dental caries and pulp disease in primary teeth holds significant importance for maintaining children's oral health. Direct pulp capping (DPC) is a vital pulp treatment that involves covering the exposed pulp with bioactive materials to promote dentin bridge formation. DPC is commonly used in primary teeth with vital pulp and mechanical pulp exposure not exceeding 1 mm. DPC offers advantages such as minimal invasiveness, comfort, simplicity of operation and short chair-side time, making it suitable for pediatric dental clinical practice. Early studies suggested negative treatment outcomes for DPC in primary teeth with carious pulp exposure. Over the years, there have been advancements in materials and technology demonstrating positive outcomes in the clinical research of primary teeth with deep caries. However, due to the limited quality of related studies, DPC has not been widely recommended for the treatment of primary teeth with carious pulp exposure, and its widespread use needs further support by more high-quality evidence-based medical research. The success rate of DPC in primary teeth is influenced by factors including pulp status, clinical operations (such as isolation and caries removal), pulp capping material, cavity type, tooth position, coronal sealing, and dental fear. In clinical operation, dentists should accurately assess pulp status and minimize bacterial contamination. Mineral trioxide aggregate (MTA) is a DPC agent with relatively sufficient evidence and good therapeutic effects, and the crown should be tightly sealed after pulp capping. Additionally, the effects of novel biocompatible materials such as iRoot BP Plus used in DPC of primary teeth, and the influence of other factors like hemostatic methods on the prognosis of affected teeth, need further exploration.

Research progress on dental materials for preventing root caries / 口腔疾病防治

@#The high incidence and untreated rate of root caries, a common and frequently occurring oral disease with challenging treatment in elderly individuals, is the main cause of tooth loss among elderly people, as rapid development results in pulpitis and periapical periodontitis or residual crown and root, which has been regarded as one of the common chronic oral diseases seriously affecting the quality of life of elderly people. Thus, early intervention and prevention are important. Traditional dental materials for preventing root caries have been widely used in clinical practice; however, they have the disadvantages of tooth coloring, remineralization and low sterilization efficiency. A series of new dental materials for preventing root caries have gradually become a research hotspot recently, which have the advantages of promoting the mineralization of deep dental tissue, prolonging the action time and enhancing adhesion. Future caries prevention materials should be designed according to the characteristics of root surface caries and the application population and should be developed toward simplicity, high efficiency and low toxicity. This review describes current research regarding anti-caries prevention material application, serving as a theoretical underpinning for the research of root caries prevention materials, which is important for both promotion in the effective prevention of root caries and improvement in the status of oral health and the quality of life among old people.

Pruebas Térmicas de Sensibilidad Pulpar en Dientes Permanentes con Pulpitis: Valor Diagnóstico y Limitaciones / Teste de Sensibilidade da Polpa Térmica em Dentes Permanentes com Pulpite: Valor Diagnóstico e Limitações / Thermal Pulp Sensitivity Testing in Permanent Teeth with Pulpitis: Diagnostic Value and Limitations

Introducción: El proceso diagnóstico en endodoncia inicia con el reconocimiento de la sintomatología, la historia dental y la evaluación clínica objetiva, en donde las pruebas térmicas de sensibilidad pulpar son indispensables en la rutina clínica para tener una aproximación de la condición pulpar. Sin embargo, la comprensión de la naturaleza de las pruebas diagnósticas, y de la fisiopatología pulpar, son indispensables para interpretar acertadamente sus resultados. Objetivo: Reconocer el valor diagnóstico y las limitaciones de las pruebas térmicas de sensibilidad pulpar durante la evaluación endodóntica del diente permanente afectado con pulpitis. Materiales y Métodos: El desarrollo de la presente revisión narrativa se llevó a cabo mediante una estrategia de búsqueda en la base electrónica de datos, la consulta en portales web especializados, y, además, requirió una pesquisa en búsqueda de artículos primarios valiosos y libros. Resultados: Fueron seleccionadas 34 publicaciones por su aporte y relevancia. Conclusiones: La prueba de sensibilidad empleando el estímulo del frío de forma apropiada resulta en una alta correspondencia para descartar entre una pulpa vital o necrótica. Esta alta correspondencia también se mantiene para las pulpitis reversibles, con una leve disminución para los casos de pulpitis irreversible, aunque sigue teniendo un alto valor diagnóstico. Sin embargo, sus principales inconvenientes siguen siendo que se basan en una respuesta cualitativa del paciente, cargada de subjetividad, e imprescindiblemente, requieren de experiencia y destreza por parte del clínico para su ejecución e interpretación.

O processo diagnóstico em endodontia inicia-se com o reconhecimento dos sintomas, a história dentária e a avaliação clínica objetiva, onde os testes de sensibilidade pulpar térmica são essenciais na rotina clínica para se ter uma aproximação do estado pulpar. Contudo, a compreensão da natureza dos exames diagnósticos e da fisiopatologia pulpar é essencial para a correta interpretação dos seus resultados. Objetivo:Reconhecer o valor diagnóstico e as limitações dos testes de sensibilidade pulpar térmica durante a avaliação endodôntica do dente permanente acometido por pulpite. Materiais e Métodos: O desenvolvimento desta revisão narrativa foi realizado por meio de estratégia de busca na base de dados eletrônica, consulta em portais especializados e, além disso, exigiu busca por artigos primários e livros valiosos. Resultados: foram selecionadas 34 publicações pela sua contribuição e relevância. Conclusões: O teste de sensibilidade utilizando o estímulo frio resulta adequadamente em alta correspondência para descartar polpa vital ou necrótica. Esta elevada correspondência também se mantém para a pulpite reversível, com ligeira diminuição para os casos de pulpite irreversível, embora continue a ter um elevado valor diagnóstico. No entanto, as suas principais desvantagens continuam a ser o facto de se basearem numa resposta qualitativa do paciente, carregada de subjetividade, e exigirem necessariamente experiência e habilidade por parte do clínico para a sua execução e interpretação

Introduction: The diagnostic process in endodontics begins with the recognition of the symptoms, the dental history and the objective clinical evaluation, where thermal pulp sensitivity tests are essential in the clinical routine to have an approximation of the pulp condition. However, understanding the nature of the diagnostic tests, and the pulp pathophysiology, are essential to correctly interpret their results. Objective: To recognize the diagnostic value and limitations of thermal pulp sensitivity tests during the endodontic evaluation of the permanent tooth affected with pulpitis. Materials and Methods: The development of this narrative review was carried out through a search strategy in the electronic database, consultation in specialized web portals, and, in addition, required a search for valuable primary articles and books. Results: 34 publications were selected for their contribution and relevance. Conclusions: The sensitivity test using the cold stimulus appropriately results in a high correspondence to rule out a vital or necrotic pulp. This high correspondence is also maintained for reversible pulpitis, with a slight decrease for cases of irreversible pulpitis, although it continues to have a high diagnostic value. However, their main drawbacks continue to be that they are based on a qualitative response from the patient, loaded with subjectivity, and necessarily require experience and skill on the part of the clinician for their execution and interpretation.

Evaluación de hábitos de medicación sistémica de odontólogos especialistas y no especialistas en endodoncia ante patologías pulpares en Argentina / Evaluation of systemic medication habits of specialists and non-specialists dentists in endodontists in relation to different pulp pathologies in Argentina

Objetivo: Determinar los hábitos de medicación sistémica de odontólogos especialistas y no especialistas en endodoncia ante diferentes patologías pulpares previos al tratamiento en- dodóntico en Argentina. Materiales y métodos: Se diseñó una encuesta para evaluar la prescripción de antibióticos, tipo de antibióticos, tiempo de prescripción, indicación de antinflamatorios no es- teroides y esteroides ante diferentes patologías pulpares. Se envió a 635 odontólogos especialistas y no especialistas en endodoncia a través de SurveyMonkey. Por medio de la prue- ba de Chi cuadrado se evaluaron las diferencias de medica- ción entre los grupos estudiados. Resultados: En pulpitis se medicó con antibióticos en el 3,48% de los casos y con antinflamatorios en un 62,60%. En necrosis pulpar sin fístula no se indicó ninguna medica- ción en un 64,47% de los casos, seguido de antibióticos en un 24,56%. En necrosis con fístula, el 52,38% no indicó nin- guna medicación, seguido de medicación con antibióticos en un 35,49%. En periodontitis apical aguda la principal medica- ción fue con antinflamatorios (52,79%), seguido de antibió- ticos (32,87%); y en el absceso alveolar agudo, un 57,10% indicó antibióticos seguido de antinflamatorios. El antibiótico de elección fue la penicilina en un 65,23% de los casos, y en caso de alergia a la misma, el antibiótico elegido fue azitromi- cina (30,12%). El tiempo de prescripción fue de 7 días. En la comparación entre especialistas y no especialistas hubo dife- rencias estadísticamente significativas para pulpitis y necrosis con fístula (p<0,01) y no las hubo entre necrosis sin fístula, periodontitis apical aguda y absceso alveolar agudo (p> 0,05). Conclusiones: La penicilina fue el antibiótico de elec- ción de la mayoría de los odontólogos argentinos encuestados junto al ibuprofeno como anti-inflamatorio. Existiría una so- bremedicación en patologías endodónticas que podría contri- buir a la resistencia microbiana a los antibióticos (AU)

Aim: Determine the systemic medication habits of den- tists specialists and non-specialists in endodontists in differ- ent pulp pathologies prior to root canal treatment in Argen- tina. Materials and methods: A survey was designed to evaluate the prescription of antibiotics, the type of antibiotics, prescription time, indication of non-steroidal anti-inflamma- tory drugs in different pulp pathologies. It was sent to 635 general dentists and endodontic specialists via SurveyMon- key. A Chi-square test was made to evaluate the differences in medication between the studied groups. Results: In pulpitis, antibiotics were prescribed in 3.48% of cases and anti-inflammatories in 62.60%. In pul- pal necrosis without fistula, no medication was indicated in 64.47% of cases, followed by antibiotics in 24.56%. In ne- crosis with fistula, 52.38% did not indicate any medication, followed by medication with antibiotics in 35.49%. In acute apical periodontitis the main medication was anti-inflamma-tories (52.79%), followed by antibiotics (32.87%); and for acute alveolar abscess, 57.10% indicated antibiotics, fol- lowed by anti-inflammatories. The antibiotic of choice was penicillin in 65.23% of the cases, and in case of allergy to it, the chosen antibiotic was azithromycin (30.12%). The prescription time was 7 days. In the comparison between specialists and non-specialists, there were significant dif- ferences for pulpitis and necrosis with fistula (p<0.01) and there were no significant differences between necrosis without fistula, acute apical periodontitis and acute alveo- lar abscess (p>0.05). Conclusions: Penicillin was the antibiotic of choice for the majority of the surveyed Argentine dentists, as well as ibuprofen as an anti-inflammatory drug. These could reflect an overmedication in endodontics pathologies that could con- tribute to microbial resistance to antibiotics (AU)

Evaluación de hábitos de medicación sistémica de odontólogos especialistas y no especialistas en endodoncia ante patologías pulpares en Argentina / Evaluation of systemic medication habits of specialists and non-specialists dentists in endodontists in relation to different pulp pathologies in Argentina

Resumen Objetivo Determinar los hábitos de medicación sistémica de odontólogos especialistas y no especialistas en endodoncia ante diferentes patologías pulpares previos al tratamiento endodóntico en Argentina. Materiales y métodos Se diseñó una encuesta para evaluar la prescripción de antibióticos, tipo de antibióticos, tiempo de prescripción, indicación de antinflamatorios no esteroides y esteroides ante diferentes patologías pulpares. Se envió a 635 odontólogos especialistas y no especialistas en endodoncia a través de SurveyMonkey. Por medio de la prueba de Chi cuadrado se evaluaron las diferencias de medicación entre los grupos estudiados. Resultados En pulpitis se medicó con antibióticos en el 3,48% de los casos y con antinflamatorios en un 62,60%. En necrosis pulpar sin fístula no se indicó ninguna medicación en un 64,47% de los casos, seguido de antibióticos en un 24,56%. En necrosis con fístula, el 52,38% no indicó ninguna medicación, seguido de medicación con antibióticos en un 35,49%. En periodontitis apical aguda la principal medicación fue con antinflamatorios (52,79%), seguido de antibióticos (32,87%); y en el absceso alveolar agudo, un 57,10% indicó antibióticos seguido de antinflamatorios. El antibiótico de elección fue la penicilina en un 65,23% de los casos, y en caso de alergia a la misma, el antibiótico elegido fue azitromicina (30,12%). El tiempo de prescripción fue de 7 días. En la comparación entre especialistas y no especialistas hubo diferencias estadísticamente significativas para pulpitis y necrosis con fístula (p<0,01) y no las hubo entre necrosis sin fístula, periodontitis apical aguda y absceso alveolar agudo (p> 0,05). Conclusiones La penicilina fue el antibiótico de elección de la mayoría de los odontólogos argentinos encuestados junto al ibuprofeno como anti-inflamatorio. Existiría una sobremedicación en patologías endodónticas que podría contribuir a la resistencia microbiana a los antibióticos.

Abstract Aim Determine the systemic medication habits of dentists specialists and non-specialists in endodontists in different pulp pathologies prior to root canal treatment in Argentina. Materials and methods A survey was designed to evaluate the prescription of antibiotics, the type of antibiotics, prescription time, indication of non-steroidal anti-inflammatory drugs in different pulp pathologies. It was sent to 635 general dentists and endodontic specialists via SurveyMonkey. A Chi-square test was made to evaluate the differences in medication between the studied groups. Results In pulpitis, antibiotics were prescribed in 3.48% of cases and anti-inflammatories in 62.60%. In pulpal necrosis without fistula, no medication was indicated in 64.47% of cases, followed by antibiotics in 24.56%. In necrosis with fistula, 52.38% did not indicate any medication, followed by medication with antibiotics in 35.49%. In acute apical periodontitis the main medication was anti-inflammatories (52.79%), followed by antibiotics (32.87%); and for acute alveolar abscess, 57.10% indicated antibiotics, followed by anti-inflammatories. The antibiotic of choice was penicillin in 65.23% of the cases, and in case of allergy to it, the chosen antibiotic was azithromycin (30.12%). The prescription time was 7 days. In the comparison between specialists and non-specialists, there were significant differences for pulpitis and necrosis with fistula (p<0.01) and there were no significant differences between necrosis without fistula, acute apical periodontitis and acute alveolar abscess (p>0.05). Conclusions Penicillin was the antibiotic of choice for the majority of the surveyed Argentine dentists, as well as ibuprofen as an anti-inflammatory drug. These could reflect an overmedication in endodontics pathologies that could contribute to microbial resistance to antibiotics.

Periodontal regeneration by minimally invasive procedures and its influence on pulp status / Regeneración periodontal a través de procedimientos mínimamente invasivos y su influencia en el estado pulpar

ABSTRACT Dental pulp and periodontium have different communication routes including, e.g., apical foramen, accessory canals and dentin tubules. Scaling, planing and root surface treatment with ethylenediaminetetraacetic acid (EDTA)-based conditioner are used in regenerative periodontal procedures. Such treatment may generate pathological communication between the two structures due to interruption of the vascular pedicle or migration of bacteria and/or inflammatory byproducts from deep periodontal pockets, which may generate pulp pathology. Aim: The aim of this study was to evaluate the influence of minimally invasive periodontal regenerative surgery on pulp vitality status in single-rooted and multi-rooted teeth associated to infraosseous defects extending to the middle and apical thirds. Materials and Method: This was a retrospective study on 30 teeth from 14 patients who received care between August 2018 and August 2019 at the postgraduate Department of Specialization in Periodontics of the Buenos Aires University School ofDentistry (FOUBA). Clinical and radiographic endodontic diagnosis was performed 6 months after the minimally invasive regenerative periodontal treatment. Results: Only two out of the 30 teeth presented changes in pulp status following regenerative periodontal procedure: irreversible pulpitis at 30 days and pulp necrosis at 180 days post-treatment. The rate for risk of change in pulp vitality status was 6.7%. Teeth with grade I and II furcation lesions (n=9) presented no change in pulp status. Conclusions: Regenerative periodontal surgery had no significant influence on pulp status in single-rooted and multi-rooted teeth with infraosseous defects extending to the level of the middle and apical third

RESUMEN La pulpa dental y el periodonto presentan diferentes vías de comunicación. El foramen apical, los conductos accesorios y los túbulos dentinarios son ejemplos de ellos. Durante los procedimientos peri-odontales regenerativos se realiza el raspaje, alisado y tratamiento de la superficie radicular con un acondicionador a base de ácido etilendiaminotetraacético (EDTA). Este tratamiento podría generar una comunicación patológica entre ambas estructuras debido a la interrupción del pedículo vascular o a la migración de bacterias y/o subproductos inflamatorios provenientes de bolsas periodontales profundas que generen patología pulpar. Objetivo: El objetivo del presente estudio fue evaluar la influencia de la cirugía periodontal regenerativa mínimamente invasiva sobre el estado de vitalidad pulpar de piezas dentarias unirradiculares y multirradiculares con defectos infraóseos que se extendían hasta el tercio medio y apical. Materiales y Método: Se analizaron de forma retrospectiva 30 piezas dentarias de 14 pacientes atendidos entre el mes de agosto 2018 y agosto 2019 en el posgrado de la Especial-ización en Periodoncia de la Facultad de Odontología de la Universidad de Buenos Aires (FOUBA). Se realizó el diagnóstico endodóntico de forma clínica y radiográfica a los 6 meses post-tratamiento periodontal regenerativo mínimamente invasivo. Resultados: De las 30 piezas solo 2 presentaron cambios en el estado pulpar luego del procedimiento periodontal regenerativo, pulpitis irreversibles a los 30 días y necrosis pulpar a los 180 días post-tratamiento. La tasa de riesgo de cambios en el estado de vitalidad pulpar fue del 6,7%. En relación a las piezas dentarias que presentaban lesiones de furcación grado I y II (n=9) ninguna presentó cambios en su estado pulpar. Conclusiones: La cirugía periodontal regenerativa no tuvo influencia significativa en el estado pulpar de piezas unirradiculares y multirra-diculares con defectos infraóseos que se extendían a nivel del tercio medio y apical.

Prediction of pulp exposure risk of carious pulpitis based on deep learning / 华西口腔医学杂志

OBJECTIVES@#This study aims to predict the risk of deep caries exposure in radiographic images based on the convolutional neural network model, compare the prediction results of the network model with those of senior dentists, evaluate the performance of the model for teaching and training stomatological students and young dentists, and assist dentists to clarify treatment plans and conduct good doctor-patient communication before surgery.@*METHODS@#A total of 206 cases of pulpitis caused by deep caries were selected from the Department of Stomatological Hospital of Tianjin Medical University from 2019 to 2022. According to the inclusion and exclusion criteria, 104 cases of pulpitis were exposed during the decaying preparation period and 102 cases of pulpitis were not exposed. The 206 radiographic images collected were randomly divided into three groups according to the proportion: 126 radiographic images in the training set, 40 radiographic images in the validation set, and 40 radiographic images in the test set. Three convolutional neural networks, visual geometry group network (VGG), residual network (ResNet), and dense convolutional network (DenseNet) were selected to analyze the rules of the radiographic images in the training set. The radiographic images of the validation set were used to adjust the super parameters of the network. Finally, 40 radiographic images of the test set were used to evaluate the performance of the three network models. A senior dentist specializing in dental pulp was selected to predict whether the deep caries of 40 radiographic images in the test set were exposed. The gold standard is whether the pulp is exposed after decaying the prepared hole during the clinical operation. The prediction effect of the three network models (VGG, ResNet, and DenseNet) and the senior dentist on the pulp exposure of 40 radiographic images in the test set were compared using receiver operating characteristic (ROC) curve, area under the ROC curve (AUC), accuracy, sensitivity, specificity, positive predictive value, negative predictive value, and F1 score to select the best network model.@*RESULTS@#The best network model was DenseNet model, with AUC of 0.97. The AUC values of the ResNet model, VGG model, and the senior dentist were 0.89, 0.78, and 0.87, respectively. Accuracy was not statistically different between the senior dentist (0.850) and the DenseNet model (0.850)(P>0.05). Kappa consistency test showed moderate reliability (Kappa=0.6>0.4, P<0.05).@*CONCLUSIONS@#Among the three convolutional neural network models, the DenseNet model has the best predictive effect on whether deep caries are exposed in imaging. The predictive effect of this model is equivalent to the level of senior dentists specializing in dental pulp.

Improvement of inflammatory cytokines level in peripheral blood, anxiety and depressive symptoms in patients with pulpitis by root canal therapy / 口腔疾病防治

Objective@# To investigate the effect of root canal therapy (RCT) on inflammatory cytokines level in peripheral blood, anxiety, and depression in patients with pulpitis.@*Methods @#A total of 155 patients with pulpitis admitted to the Stomatology Hospital of the Fourth Military Medical University from June 2021 to June 2022 were treated with root canal therapy. Another 155 persons who received health examinations during the same period were selected as the control group. The Generalized Anxiety Disorder-7 (GAD-7) scores and the Patient Health Questionnaire-9 (PHQ-9) scores of the two groups were compared. The GAD-7, PHQ-9 and pain scores of the test group before treatment and 3 and 6 weeks after treatment were compared. Pain was assessed with a visual analog scale (VAS). Inflammatory cytokine [interleukin-8 (IL-8), interleukin-1 β (IL-1β), tumor necrosis factor-α (TNF-α), c-reactive protein (CRP)] levels in the test group before treatment and 3 and 6 weeks after treatment were compared. @*Results @#The GAD-7 and PHQ-9 scores in the test group were higher than those in the control group before treatment (P<0.05). The GAD-7 and PHQ-9 scores in the test group at 3 and 6 weeks after treatment were lower than those before treatment (P<0.05); there was no significant difference between the GAD-7 and PHQ-9 scores at 3 and 6 weeks after treatment(P>0.05). The pain scores of the experimental group at 3 and 6 weeks after treatment were lower than those before treatment (P<0.05), and the pain scores 6 weeks after treatment were lower than those at 3 weeks after treatment (P<0.05). The levels of IL-8, IL-1β, TNF-α and CRP in the peripheral blood of the experimental group were lower 3 and 6 weeks after treatment than before (P<0.05), and the levels of IL-8 and IL-1β in the peripheral blood at 6 weeks after treatment were significantly lower than at 3 weeks after treatment (P<0.05). The levels of TNF-α and CRP in the peripheral blood at 6 weeks after treatment were not significantly different from those at 3 weeks after treatment (P>0.05).@*Conclusion @#The peripheral blood of patients with pulpitis has a high level of inflammatory cytokines, and the patients suffer from obvious anxiety and depression. Root canal therapy can relieve their anxiety and depression by reducing their level of inflammatory cytokines in peripheral blood.

Chronic exposure to lipopolysaccharides as an in vitro model to simulate the impaired odontogenic potential of dental pulp cells under pulpitis conditions

Abstract Simulating a bacterial-induced pulpitis environment in vitro may contribute to exploring mechanisms and bioactive molecules to counteract these adverse effects. Objective To investigate the chronic exposure of human dental pulp cells (HDPCs) to lipopolysaccharides (LPS) aiming to establish a cell culture protocol to simulate the impaired odontogenic potential under pulpitis conditions. Methodology HDPCs were isolated from four healthy molars of different donors and seeded in culture plates in a growth medium. After 24 h, the medium was changed to an odontogenic differentiation medium (DM) supplemented or not with E. coli LPS (0 - control, 0.1, 1, or 10 µg/mL) (n=8). The medium was renewed every two days for up to seven days, then replaced with LPS-free DM for up to 21 days. The activation of NF-κB and F-actin expression were assessed (immunofluorescence) after one and seven days. On day 7, cells were evaluated for both the gene expression (RT-qPCR) of odontogenic markers (COL1A1, ALPL, DSPP, and DMP1) and cytokines (TNF, IL1B, IL8, and IL6) and the production of reactive nitrogen (Griess) and oxygen species (Carboxy-H2DCFDA). Cell viability (alamarBlue) was evaluated weekly, and mineralization was assessed (Alizarin Red) at 14 and 21 days. Data were analyzed with ANOVA and post-hoc tests (α=5%). Results After one and seven days of exposure to LPS, NF-κB was activated in a dose-dependent fashion. LPS at 1 and 10 µg/mL concentrations down-regulated the gene expression of odontogenic markers and up-regulated cytokines. LPS at 10 µg/mL increased both the production of reactive nitrogen and oxygen species. LPS decreased cell viability seven days after the end of exposure. LPS at 1 and 10 µg/mL decreased hDPCs mineralization in a dose-dependent fashion. Conclusion The exposure to 10 µg/mL LPS for seven days creates an inflammatory environment that is able to impair by more than half the odontogenic potential of HDPCs in vitro, simulating a pulpitis-like condition.

Uso de Petiveria alliacea Linn como tratamiento paliativo del dolor pulpar

Introducción: Entre las plantas de la flora cubana con propiedades medicinales se encuentra la Petiveria alliacea Linn (anamú), planta natural de la América tropical que contiene numerosos principios activos y a la cual se le atribuyen múltiples propiedades. La gran mayoría de los reportes se refieren concretamente a su acción analgésica, proveniente de sus hojas y de sus raíces. Objetivo: Evaluar el efecto terapéutico de la tintura de anamú al 20 % en la remisión del dolor pulpar en la pulpitis aguda serosa transitoria, durante el periodo de septiembre de 2020 a septiembre de 2021. Método: Se realizó un estudio de tipo cuasi-experimental en pacientes con dolor de la consulta de urgencia estomatológica del Policlínico Comunitario "Hermanos Martínez Tamayo". El universo estuvo constituido por todos los pacientes que acudieron a consulta por dolor (N꓿42) y le fue diagnosticado pulpitis aguda serosa transitoria. Los mismos fueron incluidos en el estudio mediante el método no probabilístico intencionado según el orden de recepción en la consulta estomatológica. Se trabajó con las variables: edad, tiempo de refracción del dolor y efecto terapéutico. El procesamiento estadístico de los datos se realizó mediante estadística descriptiva y como medida de resumen se utilizó el porcentaje. Resultados: En el 64,3 % de los casos estudiados se pudo lograr la remisión del dolor en los primeros 5 minutos de aplicado el fitofármaco. Conclusiones: la tintura de la Petiveria alliacea Linn (anamú) al 20 % tiene un efecto favorable en la remisión del dolor provocado por la pulpitis aguda serosa transitoria.

Introduction: Among the Cuban flora plants with medicinal properties is Petiveria alliacea Linn (anamú), a natural plant from tropical Americas that contains numerous active ingredients and to which multiple properties are attributed. The vast majority of reports refer specifically to its analgesic action, coming from its leaves and roots. Objective: To evaluate the therapeutic effect of 20% anamú tincture on the remission of pulpal pain in reversible serous acute pulpitis, during the period from September 2020 to September 2021. Method: A quasi-experimental study was carried out in patients with pain from the stomatological emergency room of the Policlínico Comunitario "Hermanos Martínez Tamayo". The population was made up of all the patients who attended the consultation for pain (No. 42) and were diagnosed with reversible serous acute pulpitis. They were included in the study using the intentional non-probabilistic method according to the order of reception in the dental office. The variables taken into account were: age, pain refraction time and therapeutic effect. The statistical processing of the data was carried out using descriptive statistics and the percentage was used as a summary measure. Results: In 64.3% of the cases studied, pain remission could be achieved in the first 5 minutes of applying the phytopharmaceutical. Conclusions: The tincture of Petiveria alliacea Linn (anamu) at 20% has a favorable effect on the remission of pain caused by reversible serous acute pulpitis.

Introdução: Entre as plantas da flora cubana com propriedades medicinais está a Petiveria alliacea Linn (anamú), uma planta natural da América tropical que contém numerosos princípios ativos e à qual são atribuídas múltiplas propriedades. A grande maioria dos relatos refere-se especificamente à sua ação analgésica, proveniente de suas folhas e raízes. Objetivo: Avaliar o efeito terapêutico da tintura de anamú 20% na remissão da dor pulpar na pulpite serosa aguda transitória, durante o período de setembro de 2020 a setembro de 2021. Método: Foi realizado um estudo quase experimental em pacientes com dor de pronto-socorro estomatológico da Policlínico Comunitario "Hermanos Martínez Tamayo". O universo foi constituído por todos os doentes que compareceram à consulta de dor (N=42) e foram diagnosticados com pulpite serosa aguda transitória. Eles foram incluídos no estudo pelo método não probabilístico intencional de acordo com a ordem de recepção no consultório odontológico. Trabalhamos com as variáveis: idade, tempo de refração da dor e efeito terapêutico. O tratamento estatístico dos dados foi realizado por meio de estatística descritiva e o percentual foi utilizado como medida sumária. Resultados: Em 64,3% dos casos estudados, a remissão da dor foi alcançada nos primeiros 5 minutos de aplicação do fitofármaco. Conclusões: A tintura de Petiveria alliacea Linn (anamu) a 20% tem efeito favorável na remissão da dor causada pela pulpite serosa aguda transitória.

The effect of BMP9 on inflammation in the early stage of pulpitis

Abstract Bone morphogenetic protein 9 (BMP9) tends to be associated with various inflammatory responses of diseases, but its relationship with pulpitis remains unknown. Objective This study aimed to evaluate the effects and mechanisms of BMP9 in pulpitis. Methodology A rat model of pulpitis was used to evaluate the expression of BMP9, which was also analysed in Porphyromonas gingivalis lipopolysaccharide (Pg-LPS)-stimulated human dental pulp cells (hDPCs). The effects and mechanism of BMP9 on the regulation of inflammatory factors and matrix metalloproteinase-2 (MMP2) were evaluated using real-time quantitative PCR, western blotting, and immunocytofluorescence. Moreover, the migration ability of THP-1 monocyte-macrophages, treated with inflammatory supernate inhibited by BMP9, was previously tested by a transwell migration assay. Finally, a direct rat pulp capping model was used to evaluate in vivo the influence of the overexpression of BMP9 in pulpitis. Results The expression of BMP9 decreased after 24 h and increased after 3 and 7 d in rat pulpitis and inflammatory hDPCs. The overexpression of BMP9 inhibited the gene expression of inflammatory factors (IL-6, IL-8, and CCL2) and the secretion of IL-6 and MMP2 in Pg-LPS-stimulated hDPCs. The level of phosphorylated Smad1/5 was upregulated and the levels of phosphorylated ERK and JNK were downregulated. The inflammatory supernate of hDPCs inhibited by BMP9 reduced the migration of THP-1 cells. In rat pulp capping models, overexpressed BMP9 could partially restrain the development of dental pulp inflammation. Conclusion This is the first study to confirm that BMP9 is involved in the occurrence and development of pulpitis and can partially inhibit its severity in the early stage. These findings provided a theoretical reference for future studies on the mechanism of pulpitis and application of bioactive molecules in vital pulp therapy.

Frecuencia de tratamientos pulpares en una población pediátrica peruana: un estudio retrospectivo en un centro dental especializado de 2015 a 2019 / Frequency of Pulp Treatments in a Peruvian Pediatric Population: a Retrospective Study in a Specialized Dental Center from 2015 to 2019

Resumen Los tratamientos pulpares constituyen uno de los tipos de procedimientos más realizados en pacientes pediátricos, cuyo objetivo primordial es devolver la función masticatoria, estética y fonética. El objetivo del presente estudio fue determinar la frecuencia de los tratamientos pulpares realizados en pacientes de 3 a 11 años de edad atendidos en el Servicio de Odontopediatría del Centro Dental Docente Cayetano Heredia desde enero de 2015 hasta diciembre de 2019. Se realizó la búsqueda de las historias clínicas de pacientes atendidos en el Servicio de Odontopediatría que hayan contado con los criterios de inclusión y exclusión. Se recogieron datos sobre edad, sexo, tipo de dentición y pieza dentaria, para la elaboración de una base de datos, y posteriormente tablas de contenido. De una muestra de 514 historias clínicas virtuales, con 1166 tratamientos pulpares realizados, el tratamiento pulpar indirecto fue el más realizado para ambos sexos, 41.17% (n=247) para el sexo femenino y 34.98% (n=198) para el sexo masculino. Según rango de edad, 3 a 5 años de edad son los pacientes que más tratamiento pulpar indirecto se realizaron con 39.06% (n=359). La mayoría de pacientes que presentaban dentición decidua se les realizaron el tratamiento de tratamiento pulpar indirecto con 39.32% (n=326). Siendo la pieza dental mayormente tratada con tratamiento pulpar indirecto la 84 con 41.18 % (n=70). El tratamiento pulpar que más se realizó dentro de nuestro estudio fue el tratamiento pulpar indirecto seguido de la pulpectomía y pulpotomía. El sexo femenino, grupo etario de 3 a 5 años y dentición decidua fueron los que más recibieron tratamientos pulpares. Los dientes con mayor frecuencia de tratamientos pulpares fueron la segunda molar inferior izquierda y la primera molar inferior derecha, y las que de menor frecuencia fueron las caninos inferiores derecho e izquierdo.

Abstract Pulp treatments are one of the types of procedures most performed in pediatric patients, whose primary objective is to restore the masticatory, aesthetic and phonetic function. The objective of this study was to determine the frequency of pulp treatments performed in patients from 3 to 11 years of age treated at the Pediatric Dentistry Service of the Centro Dental Docente Cayetano Heredia from January 2015 to December 2019. The search for the medical records of patients treated at the Pediatric Dentistry Service who have met the inclusion and exclusion criteria. Data were collected on age, sex, type of dentition and tooth, for the elaboration of a database, and later tables of contents. Of a sample of 514 virtual medical records, with 1166 pulp treatments performed, indirect pulp treatment was the most performed for both sexes, 41.17% (n=247) for females and 34.98% (n=198) for males. According to age range, 3 to 5 years of age are the patients who received more indirect pulp treatment with 39.06% (n=359). The majority of patients with deciduous dentition underwent indirect pulp treatment with 39.32% (n=326). Being the tooth most treated with indirect pulp treatment 84 with 41.18% (n=70). The pulp treatment that was most performed in our study was indirect pulp treatment followed by pulpectomy and pulpotomy. The female sex, age group 3 to 5 years and deciduous dentition were the ones that received the most pulp treatments. The teeth with the highest frequency of pulp treatments were the second lower left molar and the first lower right molar, and those with the least frequency were the lower right and left canines.

Application of a one-time filling root canal in root canal therapy in plateau areas / 中国基层医药

Objective:To investigate the application effects of a one-time filling root canal in root canal therapy in plateau areas and evaluate its feasibility in oral clinic in plateau areas.Methods:Sixty-eight patients who received root canal therapy for anterior teeth and premolars (75 teeth) from August to December 2018 in Shannan People's Hospital were included in this study. They were divided into control group ( n = 33; 36 teeth) and observation group ( n = 35; 39 teeth) according to odd and even numbers of admission date. Patients in the control group received conventional root canal therapy and those in the observation group underwent one-time root canal filling therapy. Efficacy was compared between the two groups. Results:After 1 week, 2 weeks and 1 month of treatment, the success rate in the control group was 88.9%, 94.4%, 100.0%, respectively, and it was 87.2%, 94.9% and 100.0%, respectively in the observation group. There was no significant difference in success rate between the two groups at three time points studied (all P > 0.05). Conclusion:One-time filling root canal therapy can achieve ideal therapeutic effects under strict control of surgical indications. This method is worthy of clinical promotion especially in plateau areas.

Association between Periodontitis and Myocardial Infarction: Systematic Review and Meta-Analysis

Abstract The association between periodontitis and myocardial infarction remains unclear in the literature. Few studies have addressed periodontitis exposure as a predisposing factor for the development of myocardial infarction. Therefore, the present systematic review aims to analyze the association between periodontitis and myocardial infarction. This meta-analysis systematically searched MEDLINE, EMBASE, The Cochrane Controlled Trials Register, SCIELO, LILACS, CINAHL, Scopus, Web of Science and grey literature for studies estimating the association between periodontitis and myocardial infarction. Quality of evidence was assessed for all studies. The meta-analysis was conducted using random-effects models. Four of the six studies selected were included in the meta-analysis, including 1,035,703 subjects. The association between periodontitis and myocardial infarction was: RR: 5.99 (95% CI: 1.17-30.68), but with high heterogeneity (I2 = 100%; p <0.01). The results including only the highest quality articles, was lower: RR: 2.62 (95% CI: 1.47-4.70 3.83), but with lower heterogeneity (I2 = 85.5%; p < 0.01).The present systematic review with meta-analysis showed an association between periodontitis and acute myocardial infarction, but with a high level of heterogeneity.

X-radiation does not affect the dental pulp: a morphological study in rats / A radiação X não afeta a polpa dentária: um estudo morfológico em ratos

Introduction: Radiotherapy is one of the methods used as a treatment for malignant tumors in the head and neck region and it can cause tissue damage in the irradiated areas. In head and neck radiotherapy, teeth are often included within the irradiation area and, consequently, the dental pulp; which receives high doses of radiation. Objective: To evaluate the effects of ionizing radiation on the pulp tissue of rat teeth. Methodology: A double-blind experimental assay with 35 Albinus Wistar rats divided into seven groups was performed; one control group, three groups irradiated with 15 Gy, and three groups irradiated with 25 Gy. The irradiated groups were submit-ted to a single dose of radiation and sacrificed 24 hours, 7 days, and 22 days after irradiation, respectively. The samples were evaluated for the morphological presence of inflammatory infiltrate, edema, necrosis, fibrosis, and degeneration of blood vessels. Statistical analysis was performed using the Kruskal-Wallis and Dunn tests with p < 0.05. Results: Hyaline degeneration of the pulp blood vessels in the irradiated teeth was statistically signifi-cant in all irradiated groups. Inflammatory infiltrate, edema, necrosis or fibrosis was not observed. Conclusion:A single X-radiation dose is not able to affect the dental pulp connective tissue in the long term with no clinical damage.

Introdução: A radioterapia é um dos métodos utilizados como tratamento para tumores malignos em região de cabeça e pescoço e que pode causar danos aos tecidos nas áreas irradiadas. Na radioterapia de cabeça e pescoço, os dentes são comumente incluídos dentro da área de radiação e, consequentemente, a polpa dentária, recebe altas doses de radiação. Objetivo: Avaliar os efeitos da radiação ionizante no tecido pulpar de dentes de ratos. Metodologia: Foi realizado um ensaio experimental duplo-cego com 35 ratos Albinus Wistar divididos em sete grupos: um grupo controle, três grupos irradiados com 15 Gy e três grupos irradiados com 25 Gy. Os grupos irradiados foram submetidos a uma dose única de radiação e sacrificados 24 horas, 7 dias e 22 dias após a irradiação, respectivamente. As amostras foram avaliadas quanto à presença morfológica de infiltrado inflamatório, edema, necrose, fibrose e degeneração nos vasos sanguíneos. A análise estatística foi realizada por meio dos testes de Kruskal-Wallis e Dunn com p < 0.05. Resultados: Degeneração hialina nos vasos sanguíneos pulpares dos dentes irradiados foi estatisticamente significante em todos os grupos irradiados. Não foi observado infiltrado inflamatório, edema, necrose ou fibrose. Conclusão: Uma dose única de radiação X não é capaz de afetar o tecido conjuntivo da polpa dentária a longo prazo sem danos clínicos.

Oximetría de pulso y su eficacia para diagnosticar vitalidad pulpar / Pulse oximetry and its use in diagnosing pulp vitality

Objetivo: Identificar y analizar en la literatura científica reciente el uso de la oximetría de pulso como método diagnóstico de vitalidad pulpar. Metodología: En este trabajo se llevó a cabo una revisión de la literatura en las plataformas de PubMed y Google Académico, en la cual se analizó el uso de la oximetría de pulso en el diagnóstico y monitoreo odontológico del estado pulpar. Resultados: Después de una exhaustiva revisión, y de acuerdo con los criterios de inclusión y exclusión, se analizaron 21 artículos. La mayoría de los trabajos consideran la oximetría de pulso un método alternativo de diagnóstico indoloro, seguro y eficaz; sin embargo, la adaptación de un instrumento de uso exclusivo odontológico es necesaria para una medición exacta de la saturación de oxígeno en la pulpa dental. Los avances tecnológicos en el campo clínico de la odontología nos han llevado a la búsqueda de nuevas técnicas diagnósticas clínicas para mejorar la atención y los tratamientos de los pacientes que acuden día con día a recibir una consulta odontológica. Conclusiones: En los últimos años la oximetría de pulso ha demostrado ser una herramienta de diagnóstico eficaz para el diagnóstico de la vitalidad pulpar. El análisis de los artículos incluidos en esta revisión concluye que la oximetría de pulso es una técnica innovadora que puede ser utilizada como una herramienta diagnóstica adyuvante en el diagnóstico de la vitalidad pulpar (AU)

Objective: To identify and analyze in the recent scientific literature the use of pulse oximetry as a diagnostic method for pulp vitality. Methodology: In this work, a literature review was carried out on the PubMed and Google Scholar platforms in which the use of pulse oximetry in the dental diagnosis and monitoring of pulp status was analyzed. Results: After an exhaustive review and in accordance with the inclusion and exclusion criteria, 21 articles were analyzed. Most of the studies consider pulse oximetry an alternative method of painless, safe and effective diagnosis, however, the adaptation of an instrument for exclusive dental use is necessary for an exact measurement of the oxygen saturation in the dental pulp. Technological advances in the clinical field of dentistry have led us to search for new clinical diagnostic techniques to improve the care and treatment of patients who come every day to receive a dental consultation. Conclusions: In recent years, pulse oximetry has proven to be an effective diagnostic tool for the diagnosis of pulp vitality. The analysis of the articles included in this review concludes that pulse oximetry is an innovative technique that can be used as an adjunct diagnostic tool in the diagnosis of pulp vitality (AU)

Accuracy of the dental pulp sensibility test using cold spray for the diagnosis of pulp diseases: an observational clinical study

The dental pulp sensibility test is one of the main auxiliary resources for the diagnosis of pulp pathologies, and its accuracy is still debatable. This cross-sectional observational study evaluated the accuracy of the pulp sensibility test (PST) using cold spray (1,1,1,2-tetrafluoroethane) for the diagnosis of pulp diseases and determined the effect of individual and clinical variables on the reliability of this test. The paper was designed following the STROBE statement. Sixty patients with indications for primary endodontic treatment were selected and examined from August 2017 to July 2018. Data collection was performed through interviews, clinical/radiographic examinations and the PST. The results of the cold test, along with data on sex, age, the tooth type regarding the root number, and the presence of restorations and caries, as well as the recent consumption of analgesics, were recorded. The presence of bleeding within the pulp chamber was used as the gold standard to compare with the clinical diagnosis and to identify the true-positive, false-positive, true-negative, and false-negative responses. The accuracy of PST achieved in subgroups of individual and clinical variables was compared using the chi-square test with a significance level of 5% (p < 0.05). The PST with the use of cold spray showed a sensitivity of 0.88, a specificity of 1.00, a positive predictive value of 1.00, a negative predictive value of 0.86, and an accuracy of 0.93. The accuracy of the cold spray was not affected by individual or clinical variables. The PST with the use of cold spray is an accurate and reliable method for determining the diagnosis of pulp diseases, especially in cases of pulp vitality or irreversible pulpitis.

Vital pulp therapy of pulp inflammation of permanent teeth / 口腔疾病防治

@#Vital pulp therapy aims to maintain healthy pulp tissue as much as possible to improve the long-term survival of teeth. It has limited indications and uncertain curative effects. The pathological changes in inflamed pulp are the histological basis for the determination of treatment strategies and the treatment outcome; however, pulp sensitivity testing cannot reflect the actual histological status of the pulp. With the development of basic and clinical research on vital pulp therapy, the innovation of modern diagnostic and therapeutic technology and capping material, vital pulp therapy can be used as a treatment of teeth on which it was previously thought pulpectomy was necessary. Based on the evidence-based literature, this paper analyzes and summarizes the pathological changes of pulpitis and clinical research on the treatment of pulpitis. Vital pulp therapy can be a treatment for mature teeth with carious exposure and symptoms of irreversible pulpitis if comprehensive applications, including laser Doppler flowmetry, tissue oxygen monitoring, magnetic resonance imaging and microscopy, are used to determine the degree of pulp retention and if infection control and the use of biocompatible capping material are emphasized. In the future, it will be necessary to improve the success rate of vital pulp therapy for the treatment of pulpitis through research on the mechanism of pulp repair and regeneration, the precise diagnosis of pulpitis, and the development of pulp capping materials.

Comparison of different bioactive scaffolds in the treatment of regenerative pulp of young permanent teeth / 中国组织工程研究

BACKGROUND: Regenerative endodontic therapy has the advantages of good biocompatibility, complete root development and high pulp vitality preservation rate. During vascular regeneration, scaffold is needed to maintain the survival of stem cells and vascular regeneration. OBJECTIVE: To analyze the effect of different bioactive scaffolds on regenerative pulp of young permanent teeth. METHODS: Totally 160 patients (168 teeth) with acute pulpitis at the age of 8 to 16 years, who were treated in the Second Hospital of Hebei Medical University from June 2016 to June 2018, were enrolled in this study. The patients were divided into traumatic group (n=92) and dental caries group (n=76) according to a cause of a disease. Each group was subdivided into mineral trioxide aggregate (MTA), iRoot BP Plus, autologous platelet-rich fibrin (PRF)+MTA and acellular dermal matrix (ADM)+MTA subgroups. The corresponding stents were used to treat regenerative pulp. At 1, 3, 6, 12 and 24 months, the tooth color, pulp vitality, and eruption height were recorded. Root canal length, root canal wall thickness, periapical shadow and apical foramen closure were compared using X-ray photography; and the success rate was calculated. This study was approved by the Ethics Committee of Second Hospital of Hebei Medical University. RESULTS AND CONCLUSION: (1) At the final follow-up in the traumatic group, tooth color, pulp vitality and eruption height were not significantly different among the four scaffold subgroups (P > 0.05). Root canal length, root canal wall thickness, periapical shadow and apical foramen occlusion were significantly different among the four scaffold subgroups (P 0.05). Root canal length, root canal wall thickness, periapical shadow and apical foramen occlusion were significantly different among the four scaffold subgroups (P < 0.05). Among them, the effect was best in the PRF+MTA subgroup. (3) No matter traumatic group or dental caries group, the success rate was significantly different among the four scaffold subgroups (P < 0.05); and the success rate was highest in the PRF+MTA subgroup. (4) Results verified that PRF combined with MTA has excellent biological induction in the treatment of young permanent teeth with regenerative pulp. Compared with other scaffolds, it can better preserve pulp vitality, induce the formation of young permanent teeth roots and improve the success rate of treatment.

Fatores preditivos do sucesso en dodôntico em tratamentos realizados por alunos de graduação§ / Predictive factors of endodontic success in treatments performed by undergraduate / Factores predictivos del éxito endodontico en tratamientos realizados por un estudiante

Resumo Introdução e objetivo: Ainda são escassos os estudos que avaliam com exatidão o sucesso do tratamento e retratamento endodônticos e quais as falhas que realmente impactam no desfecho dos mesmos. Determinar o índice e os fatores preditivos para o sucesso de tratamentos e retratamentos endodônticos, realizados por alunos de graduação com o mesmo nível de aprendizado. Materiais e métodos: Foram verificados os registros de proservação, com pelo menos 12 meses, dos tratamentos endodônticos realizados na Faculdade de Odontologia de Pelotas, analisando o sucesso ou o fracasso endodôntico, de acordo com critérios clínicos e radiográficos. As variáveis preditivas no resultado do sucesso do tratamento foram: dente, número de canais, coroa dentária, sintomas, diagnóstico da polpa e índice periapical radiográfico. As variáveis relacionadas ao tratamento foram: técnica de instrumentação, número de sessões e limite de instrumentação apical. Resultados: 136 tratamentos endodônticos foram realizados com um acompanhamento de, pelo menos, 12 meses. A avaliação mostrou que o sucesso endodôntico foi influenciado pelo número de sessões (P = 0,015), diagnóstico inicial e grupo dentário (P= 0.014). Também foi possível observar que, quanto maior o índice periapical radiográfico inicial, pior o prognóstico endodôntico (P < 0.001). Conclusão: O índice de sucesso do tratamento endodôntico foi de 96.7% para casos de polpa vital, 87.5% para os casos de necrose pulpar e 92.9% em retratamentos. Estes índices foram influenciados pelo dente tratado, diagnóstico inicial, índice periapical radiográfico inicial e pelo número de sessões utilizadas no tratamento.

Abstract Introduction and objective: There are still few studies that accurately address endodontic success and which failures actually impact the endodontic treatment outcome. Determine success rate and predictive factors for successful endodontic treatment and retreatment by undergraduate students of the same learning level. Materials and methods: The preservation records (12 months) of the endodontic treatments performed in the Faculty of Dentistry of Pelotas were verified, indicating the success or failure of the treatment. Predictive variables in the outcome of successful endodontic treatment or retreatment were: tooth, number of channels, dental crown, symptoms, pulp diagnosis, radiographic periapical index. The treatmentrelated variables were: instrumentation technique, number of sessions and apical instrumentation limit. Results: 136 endodontic treatments were performed with a follow-up of at least 12 months. The evaluation showed that endodontic success was influenced by the number of sessions (P = 0.015), initial diagnosis and dental group (P = 0.014). It was also observed that the higher the initial radiographic periapical index, the worse the endodontic prognosis (P < 0.001). Conclusion: The success rate of endodontic treatment was 96.7% for cases of vital pulp, 87.5% for cases of pulp necrosis and 92.9% for retreatments. These indices were influenced by type tooth, initial diagnosis, initial radiographic periapical index and the number of visits used in the treatment.

Resumen Introducción y objetivo: Todavía hay pocos estudios que aborden con precisión el éxito endodóntico y cuáles fracasos realmente impactan el resultado del tratamiento endodóntico. Determinar la tasa de éxito y los factores predictivos para el tratamiento y el retratamiento exitoso de endodoncia por estudiantes universitarios del mismo nivel de aprendizaje. Materiales y métodos: Se verificaron los registros de conservación (12 meses) de los tratamientos de endodoncia realizados en la Facultad de Odontología de Pelotas, lo que indica el éxito o el fracaso del tratamiento. Las variables predictivas en el resultado de un tratamiento o retratamiento endodóntico exitoso fueron: diente, número de canales, corona dental, síntomas, diagnóstico pulpar, índice periapical radiográfico. Las variables relacionadas con el tratamiento fueron: técnica de instrumentación, número de sesiones y límite de instrumentación apical. Resultados: se realizaron 136 tratamientos de endodoncia con un seguimiento de al menos 12 meses. La evaluación mostró que el éxito endodóntico estaba influenciado por el número de sesiones (P = 0.015), el diagnóstico inicial y el grupo dental (P = 0.014). También se observó que cuanto mayor es el índice periapical radiográfico inicial, peor es el pronóstico endodóntico (P <0.001). Conclusión: La tasa de éxito del tratamiento endodóntico fue del 96.7% para casos de pulpa vital, 87.5% para casos de necrosis pulpar y 92.9% para retratamientos. Estos índices fueron influenciados por el tipo de diente, el diagnóstico inicial, el índice periapical radiográfico inicial y el número de visitas utilizadas en el tratamiento.