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1.
Braz. j. oral sci ; 20: e210432, jan.-dez. 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1254269

ABSTRACT

Aim: The aim of this study was to evaluate, by micro-computed tomography (micro-CT) analysis, the remaining filling material during endodontic retreatment performed with Protaper retreatment without solvent. Methods: Forty mandibular molars were divided into two groups (n = 20) according to the sealer used in the obturation: the bioceramic TotalFill BC (TF) or the resin-based AH Plus (AHP). The specimens were scanned before instrumentation, after obturation and after filling removal. Only the mesial roots were analysed. The filling volumes and the remaining filling material were calculated in the entire root canal and in the cervical, middle and apical thirds. Results: The volume of obturation and the volume of remaining filling material in the entire root canal and in the cervical, middle and apical thirds of the canal between the groups were not statistically different (independent t-test, p > 0.05). In the AHP group, there was a higher percentage of remaining filling material in the middle third than in the cervical third (p < 0.05). Conclusion: The filling material could not be entirely removed from any specimen


Subject(s)
Root Canal Filling Materials , Retreatment , X-Ray Microtomography , Molar
2.
Rev. Asoc. Odontol. Argent ; 109(2): 81-85, ago. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1348364

ABSTRACT

Objetivo: Comparar el tiempo empleado por los instrumen- tos TruNatomy Medium y ProTaper Next X3 para penetrar hasta la longitud de trabajo la masa de obturaciones realizadas con Gut- taCore Primary y sellador en conductos curvos simulados. Materiales y métodos: Se prepararon 20 conductos curvos simulados con instrumentos rotatorios WaveOne Gold Primary y se obturaron con GuttaCore Primary y AH Plus. Las muestras fueron divididas en dos grupos de 10 cada uno. Grupo 1: El material de obturación fue penetrado hasta la lon- gitud de trabajo con instrumentos TruNatomy Medium. Gru- po 2: El material de obturación fue penetrado hasta la longitud de trabajo con instrumentos ProTaper Next X3. Se registraron los tiempos de penetración requeridos para cada grupo y los valores obtenidos fueron analizados mediante la prueba t de Student. Resultados: Los instrumentos ProTaper Next X3 pe- netraron la masa del material de obturación más rápidamente que los instrumentos TruNatomy MediumTM. Las diferencias observadas entre ambos instrumentos fueron estadísticamente significativas (P <0.01). Conclusión: Si bien los instrumentos ProTaper Next X3 y TruNatomy MediumTM penetraron la masa de Gutta- Core Primary de manera eficiente, ProTaper Next X3 penetró hasta la longitud de trabajo más rápidamente (AU)


Aim: Compare the time required by the instruments TruNatomy Medium and ProTaper Next X3 to penetrate up to the working length the mass of fillings made with GuttaCore Primary and sealant in simulated curved canals. Materials and methods: The simulated canals of 20 EndoTraining Blocks were prepared with WaveOne Gold Pri- mary and obturated with GuttaCore Primary and AH Plus. The sample was divided into two groups of 10 each. Group 1: The sealing material was penetrated up to working length with TruNatomy Medium. Group 2: The sealing material was penetrated up to working length with ProTaper Next X3. The penetration time was recorded in each group and the obtained values were statistically analyzed with the Student's t test. Results: ProTaper Next X3 instruments penetrated the sealing material mass faster than TruNatomy Medium. Statis- tically significant differences were observed between the two instruments (P <0.01). Conclusion: While the ProTaper Next X3 and TruNat- omy Medium penetrated the GuttaCore mass to the working length efficiently, the ProTaper Next X3 did it in less time (AU)


Subject(s)
Root Canal Filling Materials , Root Canal Preparation/instrumentation , Retreatment , Gutta-Percha , Time Factors , Dental High-Speed Equipment , Dental Instruments , Dental Pulp Cavity/anatomy & histology
3.
Dent. press endod ; 11(1): 92-97, Jan-Apr2021. Ilus
Article in English | LILACS | ID: biblio-1348278

ABSTRACT

Introdução: O laser em baixa intensidade apresenta propriedades que podem ser efetivas no tratamento endodôntico, como a capacidade reparadora, a atuação antimicrobiana e o auxílio à proliferação celular. Objetivo: Descrever, por meio do relato de um caso clínico, a ação do laser em baixa intensidade como coadjuvante na reparação óssea de uma perfuração radicular e lesão perirradicular em um elemento dentário com canais tratados, sendo realizado retratamento endodôntico apenas do canal mesiovestibular, utilizando-se hidróxido de cálcio como medicação intracanal e laser em baixa intensidade. Os demais canais não foram submetidos a retratamento, apesar de apresentarem lesão perirradicular. Resultados: O laser em baixa intensidade mostrou-se efetivo como auxiliar no processo de reparação óssea restituindo, ad integrum, o osso interradicular e as lesões perirradiculares das raízes mesial e distal após acompanhamento de 12 anos. Conclusões: O laser em baixa intensidade pode ser utilizado como coadjuvante ao tratamento de perfurações, demonstrando sucesso em longo prazo (AU).


Introduction: Low intensity laser has properties that may be effective in endodontic treatment, such as restorative capacity, antimicrobial performance and cell proliferation. Methods: This report describes the action of low intensity laser as an adjunct to bone repair of a root perforation and peri-radicular lesion in a tooth submitted to endodontic treatment, in which endodontic retreatment was performed only in the mesiobuccal canal using calcium hydroxide as intracanal medication and low level laser. The other canals were not submitted to retreatment, in spite of having peri-radicular lesions. Results: The low-intensity laser was effective as an adjunct to the bone repair process, restoring ad-integrum, interradicular bone and the peri-radicular lesions of the mesial and distal roots, after 12 years of follow-up. Conclusion: The laser at low intensity can be used as a coadjuvant to the treatment of perforations, demonstrating long-term success (AU).


Subject(s)
Humans , Root Canal Therapy , Therapeutics/methods , Cell Proliferation , Retreatment , Low-Level Light Therapy
4.
Av. enferm ; 39(1): 21-29, 01 de enero de 2021.
Article in Portuguese | LILACS, BDENF, COLNAL | ID: biblio-1151180

ABSTRACT

Objetivo: analisar a percepção de pessoas com tuberculose sobre o itinerário terapêutico da tuberculose resistente e em retratamento. Materiais e método: pesquisa descritiva, com abordagem qualitativa, realizada com pessoas com tuber-culose resistente ou em retratamento por abandono ou recidiva. Os dados foram coletados por meio de entrevistas semiestruturadas, que, depois de transcritas, foram submetidas à análise de conteúdo e, posteriormente, analisadas à luz do referencial teórico sobre itinerário terapêutico. Resultados:na percepção das pessoas com tuberculose resistente ou em retratamento, evidenciou-se o pouco entendimento sobre a doença e a recidiva, principalmente quanto à causa. No itinerário terapêutico em busca dos serviços para atender às necessidades de saúde apontaram a centralização do atendimento no serviço hospitalar. A adesão esteve remetida ao abandono do tratamen-to anterior, à necessidade de voltar à rotina e ao medo de transmissão para os familiares. As ações de auto-cuidado se relacionaram à adesão ao tratamento, ao uso de equipamentos de proteção individual e à adoção de hábitos de vida mais saudáveis. Conclusões: os itinerários tera-pêuticos de pessoas com tuberculose aconteceram em diferentes níveis da atenção à saúde, especialmente nos centros especializados. Em cada serviço, analisaramse diferentes experiências quanto ao entendimento sobre a doença, ao tratamento e aos diferentes sentimentos durante o percurso do tratamento. Diante disso, os profissio-nais necessitam fazer uso de estratégias que considerem a complexidade do uso de múltiplos medicamentos, a necessidade de monitoramento da adesão e da atenção às comorbidades.


Objetivo: analizar la percepción de las personas con tuberculosis sobre el itinerario terapéutico de la tuberculosis resistente y en retratamiento. Materiales y método: investigación descriptiva, con enfoque cualitativo, realizada con personas con tuberculosis resistente o en retratamiento por abandono o recaída. Los datos fueron recolectados por medio de entrevistas semiestructuradas, que luego de ser transcritas fueron sometidas a análisis de contenido y posteriormente analizadas a la luz del marco teórico sobre itinerario terapéutico. Resultados: en la percepción de las personas con tuberculosis resistente o en retratamiento había poco conocimiento sobre la enfermedad y la recaída, especialmente en cuanto a la causa. En el itinerario terapéutico en busca de servicios para satisfacer las necesidades de salud, apuntaron a la centralización de la atención en el servicio hospitalario. La adherencia se relacionó con el abandono del tratamiento previo, la necesidad de volver a la rutina y el miedo a la transmisión a los familiares. Las acciones de autocuidado se relacionaron con la adherencia al tratamiento, el uso de equipos de protección personal y la adopción de hábitos de vida más saludables. Conclusiones: los itinerarios terapéuticos de las personas con tuberculosis tuvieron lugar en diferentes niveles de atención de salud, especialmente en centros especializados. En cada servicio se analizaron diferentes experiencias en cuanto a la comprensión de la enfermedad, el tratamiento y las diferentes sensaciones en la trayectoria del tratamiento. Por lo tanto, los profesionales deben hacer uso de estrategias que consideren la complejidad del uso de múltiples medicamentos, la necesidad de monitorear la adherencia y la atención a las comorbilidades


Objective: To study the perception of people with tuberculosis about the therapeutic itinerary of resistant tuberculosis and its retreatment. Materials and method:Descriptive research, with a qualitative approach, carried out with people with resistant tuberculosis or subject to retreatment due to abandonment or relapse. Data were collected through semi-structured interviews, which after being tran-scribed were submitted to content analysis, and, subsequently, analyzed in the light of the theoretical frame-work on therapeutic itinerary. Results: The perception of people with resistant tuberculosis or under retreatment shows little understand-ing about the disease and its relapse, especially regarding the cause of the disease. In the therapeutic itinerary in search of services to meet health needs, they pointed to the centralization of care in the hospital service. Adherence was related to the abandonment of previous treatment, the need to return to a routine, and fear of transmission to family members. Self-care actions were related to adher-ence to treatment, the use of personal protective equipment and the adoption of healthier lifestyle habits. Conclusions: Therapeutic itineraries of people with tuberculosis took place at different levels of health care, particularly in specialized centers. In each service, different experiences were examined regarding the under-standing of the disease, its treatment, and the different feelings involved during the treatment. Therefore, professionals should deploy strategies that consider the complexity of using multiple medications and the need to monitor adherence and existing comorbidities.


Subject(s)
Humans , Tuberculosis , Tuberculosis, Multidrug-Resistant , Retreatment , Delivery of Health Care
5.
J. appl. oral sci ; 29: e20201079, 2021. tab, graf
Article in English | LILACS | ID: biblio-1340114

ABSTRACT

Abstract Objective To examine the factors affecting the transitions through treatment interventions after failure of non-surgical root canal treatment (NS-RCT). Methodology Insurance enrollment and claim information for enrollees of Delta Dental of Wisconsin (DDWI), USA were analyzed for 438,487 initial NS-RCT procedures to determine the effect of initial provider type and other covariates on additional treatments (no additional treatment, nonsurgical retreatment, surgical retreatment and extraction). A multi-state model was created using the "mstate" R package. Transitions between the four states identified by Code on Dental Procedures and Nomenclature were analyzed. Cox proportional Hazards regression stratified by transition type was used to estimate the effect of provider type on the risk of each transition, adjusting for covariates. Results The overall survival rates for all teeth that were treated by NS-RCT was 82.8% [95% CI 82.57%, 83.11%] at 10 years. Approximately, 7% of cases changed from the first state of initial NS-RCT during the 13-year study period with ultimately 0.9%, 0.4% and 5% of cases receiving non-surgical retreatment, surgical retreatment or extraction, respectively. Teeth are more likely to be retreated non-surgically than surgically, and to be extracted than retreated. In general, the probability of a tooth having non-surgical retreatment was higher if the initial provider was not an endodontist (Hazard Ratio (HR)=3.2). Molars were more likely to be non-surgically retreated (HR=2.0) or extracted (HR=2.8) when compared to anterior teeth. The probability of non-surgical retreatment (HR=0.93) or extraction (HR=0.50) was lower when a crown was placed within 90 days after NS-RCT. Conclusion Most teeth remained in the same state after treatment with no additional treatment transitions. When a transition occurred, it was more likely to be an extraction. Type of provider, age, location of the tooth, gender, and time to placement of final restoration significantly influence treatment transitions.


Subject(s)
Humans , Tooth, Nonvital , Dental Pulp Cavity , Root Canal Therapy , Retrospective Studies , Treatment Outcome , Retreatment
6.
J. appl. oral sci ; 29: e20200799, 2021. tab, graf
Article in English | LILACS | ID: biblio-1286910

ABSTRACT

Abstract Objectives This study aimed to investigate patterns and risk factors related to the feasibility of achieving technical quality and periapical healing in root canal non-surgical retreatment, using regression and data mining methods. Methodology This retrospective observational study included 321 consecutive patients presenting for root canal retreatment. Patients were treated by graduate students, following standard protocols. Data on medical history, diagnosis, treatment, and follow-up visits variables were collected from physical records and periapical radiographs and transferred to an electronic chart database. Basic statistics were tabulated, and univariate and multivariate analytical methods were used to identify risk factors for technical quality and periapical healing. Decision trees were generated to predict technical quality and periapical healing patterns using the J48 algorithm in the Weka software. Results Technical outcome was satisfactory in 65.20%, and we observed periapical healing in 80.50% of the cases. Several factors were related to technical quality, including severity of root curvature and altered root canal morphology (p<0.05). Follow-up periods had a mean of 4.05 years. Periapical lesion area, tooth type, and apical resorption proved to be significantly associated with retreatment failure (p<0.05). Data mining analysis suggested that apical root resorption might prevent satisfactory technical outcomes even in teeth with straight root canals. Also, large periapical lesions and poor root filling quality in primary endodontic treatment might be related to healing failure. Conclusion Frequent patterns and factors affecting technical outcomes of endodontic retreatment included root canal morphological features and its alterations resulting from primary endodontic treatment. Healing outcomes were mainly associated with the extent of apical periodontitis pathological damages in dental and periapical tissues. To determine treatment predictability, we suggest patterns including clinical and radiographic features of apical periodontitis and technical quality of primary endodontic treatment.


Subject(s)
Humans , Periapical Periodontitis , Dental Pulp Cavity/diagnostic imaging , Root Canal Therapy , Retrospective Studies , Retreatment , Data Mining
7.
Dent. press endod ; 10(3): 15-26, Sept-Dec.2020. Ilus
Article in English | LILACS | ID: biblio-1344750

ABSTRACT

Introdução: A manutenção da dentição natural é preferível na maioria dos casos. Muito embora hoje em dia se possa contar com os implantes dentários, em casos com prognóstico menos limitado a preservação dos dentes ainda é mais aconselhável que os implantes. A Endodontia, e todas as suas possibilidades terapêuticas existentes, intenta e faz o papel de especialidade que tem como princípio prevenir ou eliminar a periodontite apical, dando condições de reparo e saúde ao periodonto apical e tecido ósseo. Com o advento tecnológico dos últimos anos, os tratamentos de canal se tornaram muito mais previsíveis e isso se reflete no aumento dos índices de sucesso, tanto de tratamentos primários quanto de retratamentos. Contudo, existem casos que falham, mas esses casos não são o fim da linha para o dente. Entre as manobras existentes para se reintervir em dentes que tiveram um tratamento que fracassou, são possíveis a microcirurgia endodôntica apical ou o reimplante intencional. Método: A manobra de reimplante intencional consiste de várias etapas cirúrgicas que vão desde a extração do elemento dental até a reposição de volta ao seu alvéolo. Neste artigo foram descritos dois casos clínicos limítrofes que foram tratados por meio desse procedimento. Resultados: Os casos apresentaram resultados excelentes, como remissão das lesões apicais, reparo ósseo e permanência dos elementos em boca, com acompanhamento de longo prazo (2 e 11 anos). Conclusões: Com altos índices de sucesso já relatados na literatura, essa modalidade de tratamento precisa ser mais explorada e divulgada no Brasil, principalmente entre alunos de pós-graduação e especialistas em Endodontia, pois comprovadamente pode evitar a indicação desnecessária de implantes dentais (AU).


Introduction: The maintenance of natural dentition is preferable in most of cases. However, nowadays it is possible to use dental implants in cases where prognosis is very limited. Endodontics and all of its therapeutic modalities play an important role, which has, in principle, to prevent or eliminate apical periodontitis providing better conditions for wound healing of periapical and bone tissues. In the past few years, with technological advances, root canal treatment became more predictable and this can be seen reflected in the increase of success rates of primary treatment as well as non-surgical retreatment. Nevertheless, some cases can failure but, it is not the end for the tooth, once some therapeutic approaches are possible, like apical microsurgery or intentional replantation. Method: Intentional replantation is an approach in which some surgical steps are done, since the dental extraction until its repositioning back to the socket. In this article two bordering cases were described. Results: 2 and 11 years follow-up confirm the favorable results of this technique. Both cases with no apical lesion, bone healing and dental elements developing their natural functions. Conclusions: The high successful rates described in the literature give to this treatment approach an important face, and that should be more explored and disclosed in Brazil, specially between specialists and post-graduation students, once can avoid unnecessary dental implants (AU).


Subject(s)
Humans , Periapical Periodontitis , Tooth Replantation , Therapeutic Approaches , Microsurgery , Students , Retreatment , Endodontics , Methods
8.
Dent. press endod ; 10(3): 49-55, Sept-Dec.2020. Tab, Ilus
Article in English | LILACS | ID: biblio-1344785

ABSTRACT

Objetivo: O presente estudo usou micro-CT para avaliar a quantidade de material obturador remanescente em canais radiculares curvos que tinham sido obturados com cimento Endosequence BC/Cpoint ou com cimento AH/ guta-percha, depois do retratamento utilizando instrumentos rotatórios ou reciprocantes. Métodos: Sessenta canais mesiovestibulares de molares superiores foram instrumentados até MTwo #35.04. As amostras foram randomicamente alocadas em quatro grupos (n=15): os canais do G1 e G2 foram obturados com AH/guta-percha, e os canais do G3 e G4 foram obturados com BC/Cpoint. O material obturador foi removido usando instrumentos rotatórios ou reciprocantes ­ G1 e G3: R25 Reciproc + reinstrumentação com R40; e G2 e G4: Sistema ProTaper Universal Retratamento + reinstrumentação com MTwo 40.06. Micro-CTs foram usadas para medir a quantidade de material obturador remanescente (mm3 ) para o canal inteiro e para cada terço, em dois momentos: 1) após a remoção do material obturador; e 2) após a reinstrumentação. Resultados: Após a remoção do material obturador, BC/CPoint permaneceu mais dentro do canal do que AH/guta-percha quando o canal inteiro (29,92% x 19,25%, p=0,0290) e o terço apical foram analisados. Após a reinstrumentação, BC/CPoint permaneceu mais do que AH/guta-percha somente no terço apical. Protocolos de tratamento com instrumentos rotatórios ou reciprocantes removeram material obturador sem diferença para AH/guta-percha (G1 e G2: p> 0,05) e BC/CPoint (G3 e G4: p> 0,05). Conclusões: BC/Cpoint é mais difícil de ser removido de canais radiculares curvos do que AH/guta-percha. Instrumentos rotatórios e reciprocantes têm habilidade similar na remoção de material obturador (AU).


Objective: This study used micro-CT to evaluate the amount of remaining filling material in curved root canals obturated with Endosequence BC Sealer/Cpoint or AH/gutta-percha after a rotary or reciprocating retreatment. Methods: Sixty mesiobuccal canals of maxillary molars were instrumented up to MTwo #35.04. Samples were randomly assigned to four groups (n=15): canals from G1 and G2 were filled with AH/gutta-percha, and canals from G3 and G4 were filled with BC/Cpoint. Filling material was removed using rotary or reciprocating instruments: G1 and G3: R25 Reciproc + re-shaping with R40; and G2 and G4: ProTaper Universal Retreatment system + re-shaping with MTwo 40.06. Micro-CT was used to measure the remaining amount of filling material (mm3 ), for the whole canal, and for each third, in two moments: 1) after filling removal and 2) after canal re-shaping. Results: After filling removal, BC/CPoint remained more into the canal than AH/Gutta-percha when the whole canal (29.92% x 19.25%, p = 0.0290) and the apical third were analyzed. After re-shaping, BC/CPoint remained more than AH/Gutta-percha only in the apical third. Rotary or reciprocating retreatment protocols removed filling material without difference for AH/gutta-percha (G1 and G2: p > 0.05) and BC/CPoint (G3 and G4: p > 0.05). Conclusion: BC/Cpoint is more difficult to be removed from curved root canals than AH/gutta-percha. Reciprocating and rotary instruments have similar ability to remove filling material (AU).


Subject(s)
Root Canal Filling Materials , Biofilms , Dental Instruments , X-Ray Microtomography , Lifting , Retreatment , Gutta-Percha , Molar
9.
Gac. méd. Méx ; 156(6): 549-555, nov.-dic. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1249966

ABSTRACT

Resumen Introducción: Aun con adecuado protocolo de desconexión de la ventilación mecánica (DVM), el procedimiento falla en 15 a 30 % de los casos. Objetivo: Evaluar la asociación entre factores de riesgo independientes y fracaso posextubación en pacientes con DVM en una unidad de cuidados intensivos. Método: Estudio de cohorte, longitudinal, prospectivo, analítico, que incluyó pacientes sometidos a ventilación mecánica por más de 24 horas y que fueron extubados. Se obtuvieron reportes preextubación de hemoglobina, albúmina, fósforo, índice cintura-cadera y puntuación SOFA. Se definió como fracaso de extubación al reinicio de la ventilación mecánica en 48 horas o menos. Resultados: Se extubaron 123 pacientes, 74 hombres (60 %); la edad promedio fue de 50 ± 18 años. Ocurrió fracaso de extubación en 37 (30 %). Como factores de riesgo independentes se asoció hipoalbuminemia en 29 (23.8 %, RR = 1.43, IC 95 % = 1.11-1.85) e hipofosfatemia en 18 (14.6 %, RR = 2.98, IC 95 % = 1.66-5.35); se observaron dos o más factores de riesgo independientes en 22.7 % (RR = 1.51, IC 95 % = 1.14-2.00). Conclusiones: Identificar los factores de riesgo independentes antes de la DVM puede ayudar a reducir el fracaso de la extubación y la morbimortalidad asociada.


Abstract Introduction: Even with an adequate mechanical ventilation weaning (MVW) protocol, the procedure fails in 15 to 30 % of cases. Objective: To assess the association between independent risk factors (IRFs) and post-extubation failure in patients undergoing MVW in an intensive care unit. Method: Longitudinal, prospective, analytical cohort study in patients on mechanical ventilation for more than 24 hours and who were extubated. Pre-extubation reports of hemoglobin, albumin, phosphorus, waist-hip ratio and SOFA score were obtained. Extubation failure was defined as resumption of mechanical ventilation within 48 hours or less. Results: 123 patients were extubated, out of whom 74 were males (60 %); average age was 50 ± 18 years. Extubation failure occurred in 37 (30 %). Hypoalbuminemia was associated as an independent risk factor in 29 (23.8 %, RR = 1.43, 95 % CI = 1.11-1.85) and hypophosphatemia was in 18 (14.6 %, RR = 2.98, 95 % CI = 1.66-5.35); two or more IRFs were observed in 22.7 % (RR = 1.51, 95 % CI = 1.14-2.00). Conclusions: Identifying independent risk factors prior to MVW can help reduce the risk of extubation failure and associated morbidity and mortality.


Subject(s)
Humans , Male , Female , Middle Aged , Ventilator Weaning , Airway Extubation/adverse effects , Phosphorus/blood , Time Factors , Serum Albumin/analysis , Cross-Sectional Studies , Prospective Studies , Risk Factors , Cohort Studies , Retreatment , Health Care Surveys/statistics & numerical data , Waist-Hip Ratio , Airway Extubation/statistics & numerical data , Intensive Care Units
10.
Rev. Asoc. Odontol. Argent ; 108(3): 138-142, dic. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1147932

ABSTRACT

Objetivo: Informar la experiencia de un retratamiento de endodoncia efectuado a una paciente con enfermedad de Alzheimer. Caso clínico: Una paciente de 71 años de edad acudió al servicio para un retratamiento endodóntico en canino inferior derecho realizado previamente en otra institución. Durante los procedimientos se registraron dificultades relacionadas con la negativa del cuidador a permanecer en la consulta, episodios de confusión y movimientos involuntarios, por lo cual se resolvió aplicar la técnica decir-mostrar-hacer para el manejo de la conducta, además de un abrebocas metálico y un colimador para la toma de rayos X. Gracias a la cooperación de la paciente, el tratamiento se llevó a cabo con éxito. Conclusiones: Es importante priorizar la atención dental en etapas tempranas de la enfermedad, cuando la disfunción cognitiva aún permite la cooperación y el riesgo de broncoaspiración todavía es bajo. Así mismo, se recomienda promover que el cuidador permanezca durante las sesiones de rehabilitación. El odontólogo debe conocer los fundamentos fisiológicos y conductuales en relación con esta alteración neurológica, a fin de poder adecuar la atención dental a la individualidad de estos pacientes (AU)


Aim: To present a case report about the experience during a re root canal treatment on a patient with Alzheimer's disease. Clinical case: A 71-year-old female patient, attended for endodontic re treatment of her lower right canine, previously root filled elsewhere. Difficulties are reported during the procedures due to the carer's resistance to staying in the dental office during the treatment, episodes of confusion and uncontrolled movements of the patient, opting for the use of the tell-show-do technique for behavior management, metallic mouth opener, and collimator for X-ray taking. The treatment was carried out successfully, and the cooperation of the patient was also achieved. Conclusions: It is important to prioritise dental treatment during the early stages of the disease, when cognitive dysfunction still allows cooperation and there is a low risk of bronchoaspiration. Likewise, it is recommended to encourage the carers to remain in the dental office during treatment. The dentist must know the physiological and behavioral changes that arise as a result of this neurological disorder, to provide dental treatment to these patients (AU)


Subject(s)
Humans , Male , Aged , Parkinson Disease , Dental Care for Disabled , Alzheimer Disease , Root Canal Therapy/adverse effects , Schools, Dental , Retreatment , Mexico
11.
Rev. ADM ; 77(6): 321-328, nov.-dic. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1151475

ABSTRACT

La periimplantitis se define como la patología inflamatoria e irreversible que afecta al hueso periimplantario y le hace perder soporte y función al implante según la definición del European Workshop on Periodontology (EWOP). La prevalencia estimada de la periimplantitis es de 28 a 77%. Los diferentes protocolos de abordaje de la periimplantitis nos ofrecen diversas posibilidades: destoxificación de la superficie y regeneración, limpieza mecánica y resección del tejido inflamado, extracción del implante, entre otros. El principal problema de los tratamientos regenerativos es limpiar y desintoxicar correctamente la superficie del implante expuesto, ya que al tratarse de superficies generalmente muy rugosas, las bacterias del medio bucal las colonizan con mucha facilidad y es prácticamente imposible eliminar por completo el biofilm. El protocolo de tratamiento para la periimplantitis se basa en un algoritmo de tratamiento, en el que se retiran los implantes gravemente afectados por periimplantitis de forma atraumática, lo cual garantiza la conservación del lecho al 100% al no retirarse volumen óseo, y cuándo deben utilizarse las trefinas, pues las que se utilizan en el protocolo únicamente rompen la unión ósea de los primeros milímetros sin retirarlo. En el siguiente caso clínico mostramos el retratamiento de un caso de periimplantitis en el que se ha realizado una nueva rehabilitación implantosoportada (AU)


Periimplantitis is defined as the inflammatory and irreversible pathology that affects the peri-implantary bone and causes it to lose support and function to the implant as defined by the European Workshop on Periodontology (EWOP). The estimated prevalence of periimplantitis figures ranging from 28 to 77%. The different protocols for approaching periimplantitis offer different possibilities: detoxification of the surface and re-generation, mechanical cleaning and resection of inflamed tissue and extraction of the implant mainly. The main problem with regenerative treatments is to correctly clean and detoxify the surface of the exposed implant, since as these are generally highly rough surfaces, bacteria in the oral environment colonise them very easily and it is practically impossible to completely eliminate the biofilm. This treatment algorithm, in which implants severely affected by periimplantitis are removed atraumatically, guarantees the conservation of the bed at 100% since no bone volume is removed and trephines must be used, since those used in the protocol only break the bone union of the first few millimetres, without removing it. In the following clinical case, we show the re-treatment of a case of peri-implantitis where a new implant-supported rehabilitation has been performed (AU)


Subject(s)
Humans , Male , Aged , Osseointegration , Minimally Invasive Surgical Procedures/methods , Dental Implantation, Endosseous , Peri-Implantitis/therapy , Bone Regeneration , Algorithms , Clinical Protocols , Dental Prosthesis, Implant-Supported , Retreatment , Mouth Rehabilitation/methods
12.
Braz. dent. j ; 31(6): 605-610, Nov.-Dec. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132347

ABSTRACT

Abstract This study evaluated the efficiency of using a single instrument from three different rotary multi-file systems and compared them with that of a reciprocating single-file for endodontic retreatment by means of micro-CT. Sixty extracted canines were prepared using a size F2 ProTaper Universal file and obturated. After 30 days of storage at 37ºC and 100% humidity, the teeth were randomly divided into four groups (n=15) based on the type of instrument used to retreatment: ProTaper Next (PTN), ProTaper Gold (PTG), TRUShape 3D (TS), and WaveOne (WO). The canals were retreated using only the size 40 instrument from each system according to the manufacturer's recommendations for torque and speed. The time required to remove the filling material was recorded in seconds. The amount of initial and residual filling material and the quantity of dentin removed were assessed by means of micro-CT. Data were statistically analyzed (ANOVA and Kruskal-Wallis) at a 5% significance level. TS instruments required the highest (p<0.05) amount of time (mean, 384.80 ±144.92) compared with the WO (229.67±68.16) and PTG (248.67±64.22) and not so different from PTN instruments (327.67±133.3). No differences in the amount of dentin removed, initial and residual filling volume, and percentages of filling material were observed among the groups. The use of a single rotary instrument from the PTG, TS, and PTN systems was as effective as that of the single-file reciprocating WO system. However, none of the instruments was able to remove the filling materials completely.


Resumo Este estudo laboratorial avaliou por meio de micro-CT a eficiência do uso de um único instrumento de três sistemas rotatórios em retratamentos endodônticos, comparados a um instrumento único reciprocante. Sessenta caninos extraídos foram preparados usando o sistema ProTaper Universal (F2) e obturados. Após 30 dias de armazenamento a 37 ºC e 100% de umidade, os dentes foram divididos aleatoriamente em quatro grupos (n = 15), de acordo com o instrumento utilizado para remover as obturações endodônticas: ProTaper NEXT (PTN), ProTaper Gold (PTG), TRUShape 3D (TS) e WaveOne (WO). Os canais foram retratados usando apenas o instrumento tamanho 40 de cada sistema, seguindo as recomendações do fabricante para torque e velocidade. O tempo necessário para remover a obturação foi registrado em segundos. A quantidade de material remanescente e o volume de dentina removida foram avaliadas por meio de micro-CT. Análise estatística foi realizada (ANOVA e Kruskal-Wallis), com nível de significância de 5%. O tempo de trabalho no grupo TS foi significativamente maior (p<0.05) (média, 384,80 ± 144,92) comparado a WO (229,67 ± 68,16) e PTG (248,67 ± 64,22), e similar a PTN (327,67 ± 133,3). Não houve diferenças entre os grupos na quantidade de dentina removida e nas porcentagens de material obturador residual. O uso de apenas um instrumento rotatório dos sistemas PTG, TS e PTN foi tão eficaz quanto o do sistema WO reciprocante na remoção do material obturador. No entanto, nenhum dos instrumentos conseguiu remover completamente os materiais obturadores.


Subject(s)
Root Canal Filling Materials , Root Canal Obturation , Titanium , Root Canal Preparation , Retreatment , Dental Pulp Cavity , Equipment Design , X-Ray Microtomography , Nickel
13.
Dent. press endod ; 10(2): 67-72, maio-ago.2020. Tab, Ilus
Article in English | LILACS | ID: biblio-1344654

ABSTRACT

ntrodução: A cirurgia parendodôntica é uma alternativa ao tratamento endodôntico convencional, principalmente em casos envolvendo lesões perirradiculares associadas a processos osteolíticos, em que a terapia endodôntica convencional ou seu retratamento não obtiveram sucesso. Novos métodos terapêuticos têm ganhado espaço na clínica odontológica para esse tipo de caso, entre os quais se destaca a fibrina rica em plaquetas e leucócitos, que, ao concentrar e permitir uma liberação mais prolongada dos fatores de crescimento, promove uma modulação do processo reparador. Esse processo é baseado na otimização da regeneração tecidual através da inserção da membrana de fibrina. Objetivo: O objetivo do presente trabalho é apresentar, por meio do relato de um caso clínico, a utilização de fibrina rica em plaquetas e leucócitos em cirurgia parendodôntica, com intuito de reparo ósseo. Resultados: O acompanhamento clínico e tomográfico foi realizado após 190 dias, momento no qual foi constatada ausência de sintomatologia, bem como completo reparo da lesão e restabelecimento do osso cortical vestibular, além de ausência de lesão detectável em tomografia. Conclusão: No caso clínico relatado, houve uma completa regeneração tecidual da área envolvida na lesão (AU).


Introduction: Parendodontic surgery is an alternative to conventional endodontic treatment, especially in cases involving periradicular lesions associated with osteolytic processes, in which conventional endodontic therapy or retreatment was not successful. New therapeutic methods for the treatment of these cases have ground in clinical dentistry . For example, leukocyteand platelet-rich fibrin which has a higher concentration and more prolonged release of growth factors, modulates the repair process. This process is based on the optimization of tissue regeneration through the insertion of fibrin membrane. Objective: The objective of this study is to report a case in which leukocyte- and platelet-rich fibrin associated with parendodontic surgery was used for bone repair. Results: Clinical and tomographic follow-up was performed after 72 days, which revealed absence of any symptoms, complete repair of the lesion, buccal cortical bone regeneration, and absence of detectable lesion on tomography. Conclusion: There was complete tissue regeneration at the lesion site(AU).


Subject(s)
Dental Clinics , Platelet-Rich Fibrin , Regenerative Endodontics , Leukocytes , Apicoectomy , Retreatment , Methods
14.
Dent. press endod ; 10(2): 86-93, maio-ago.2020. Ilus
Article in English | LILACS | ID: biblio-1344683

ABSTRACT

Introdução: Acidentes e complicações podem acontecer em qualquer fase do tratamento endodôntico. Podem ocorrer devido a diversos fatores, como falhas dos instrumentos, dificuldades anatômicas e limitações do profissional, o que, muitas vezes, pode alterar o prognóstico de um caso. Objetivo: O presente relato de caso aborda uma situação em que uma paciente se apresentava com dois instrumentos fraturados e uma perfuração radicular em um dente molar inferior com periodontite apical. Relato do caso: Os fragmentos foram removidos por meio de técnica mecanizada e ultrassônica padronizada, e a perfuração foi tratada e selada com material à base de silicato de cálcio. Conclusão: O emprego de recursos tecnológicos atuais favoreceu a resolução do caso, melhorando seu prognóstico. O restabelecimento da condição de normalidade do dente e tecidos adjacentes foi confirmado por exames radiográficos e tomográficos (AU).


Introduction: Accidents and complications may happen at any endodontic treatment stage. These are likely to change the prognosis of treatment and can be due to factors related to instrumental failure, anatomic difficulties and the professional's limitations. Objective: This case report addresses a case where a patient presenting two separated instruments and a root perforation in a lower molar with apical periodontitis. Case report: The separated instruments have been removed by mechanical and ultrasonic standardized method and the perforation was treated and sealed by silicate cement-based material. Conclusion: The use of technological resources favored the resolution of the case, increasing its predictability. The reestablishment of the normal condition of the tooth and surrounding tissues was confirmed by radiograph and computed tomography exams (AU).


Subject(s)
Humans , Female , Root Canal Therapy , Silicate Cement , Technology , Ultrasonic Therapy , Calcium , Retreatment , Molar
15.
Rev. cient. odontol ; 8(2): e023, mayo-ago. 2020. ilus
Article in Spanish | LIPECS, LILACS, LIPECS | ID: biblio-1119301

ABSTRACT

Los implantes dentales son un tipo más de tratamiento para la resolución de casos de edentulismo. Desde su inicio, en los años 70, han sido una alternativa creciente para rehabilitar pacientes, sobre todo en casos en los que las rehabilitaciones convencionales no eran posibles. Cada vez de forma más frecuente nos enfrentamos a retratamientos de implantes y casos con atrofias más complejas. En el siguiente caso, mostramos un retratamiento de implantes fracasados unido a una situación de atrofia extrema vertical y horizontal combinada. En casos de atrofia severa maxilar y mandibular, el uso de los implantes cortos puede acortar los tiempos de tratamiento y simplificar las técnicas quirúrgicas sin renunciar a la predictibilidad como en el caso mostrado. (AU)


Dental implants are an alternative treatment for extended the resolution of cases of edentulism. Since its inception in the year 70 have been a growing alternative to rehabilitate patients, especially in cases where conventional rehabilitations were not possible. Every time, in the dental office were more often we re-treatments of implants and cases with more complex atrophies. In the following case we show a re-treatment of failed implants attached to a situation of extreme atrophy combined vertical and horizontal. In cases of severe maxillary and mandibular atrophy, the use of short implants can shorten treatment times and simplify surgical techniques without sacrificing predictability as in the case shown. (AU)


Subject(s)
Humans , Female , Aged , Bone Diseases/therapy , Dental Implants , Retreatment , Peri-Implantitis/therapy
16.
Dent. press endod ; 10(1): 62-67, Jan-Apr2020. Ilus
Article in English | LILACS | ID: biblio-1344283

ABSTRACT

Alterações morfológicas podem influenciar adversamente o sucesso do tratamento endodôntico. O incisivo lateral superior caracteriza-se pela presença de um canal e uma única raiz. A interpretação cuidadosa das radiografias, associada a recursos de iluminação e ampliação, é de extrema importância para detecção de variações anatômicas. Objetivo: O objetivo do presente relato de caso foi descrever o retratamento endodôntico não usual de um incisivo lateral superior com duas raízes. Relato de caso: O microscópio operatório foi de fundamental importância para a realização do novo tratamento. Para remoção do material obturador, foram utilizados solvente, limas manuais e pontas de ultrassom, reinstrumentação com limas manuais tipo K de aço inoxidável e obturação com guta-percha e cimento Pulp Canal Sealer, por meio da técnica de termoplastificação. Conclusão: O prognóstico favorável foi confirmado após acompanhamento de 216 meses (AU).


Morphological changes in teeth may adversely affect the success of endodontic treatment. The upper lateral incisors are characterized by the presence of a canal and a single root. Several studies have reported variations in the number of roots and canals. A careful interpretation of radiographs under enhanced illumination and magnification is of extreme importance for detecting these anatomic variations. this report aimed to describe a clinical case of unusual endodontic retreatment of an upper lateral incisor with two roots. The operative microscopy played a fundamental role in accomplishing the new treatment. The procedure involved the use of solvents, manual files, and ultrasonic tips to remove the obturator, and instrumentation of root canals with stainless steel type K manual files. Root canals were obturated with gutta-percha and Pulp Canal Sealer cement using the thermoplastic technique. A favorable prognosis was confirmed after a follow-up of 216 months (AU).


Subject(s)
Humans , Female , Aged , Ultrasonics , Retreatment , Endodontics , Lifting , Gutta-Percha , Anatomy , Microscopy
17.
Braz. dent. j ; 31(1): 25-31, Jan.-Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1089263

ABSTRACT

Abstract The purpose of this study was to evaluate the presence of residues after post space preparation (PSP) and establish whether the apical displacement of the gutta-percha was affected by the moments and methods of PSP in teeth filled by the single-cone technique. The root canals of 20 bovine incisor teeth were instrumented with Reciproc and filled with single-cone and AH Plus. The specimens were divided into 4 groups according to the moment and method of PSP (n=5): immediate with drill, immediate with thermoplasticizer, delayed with drill and delayed with thermoplasticizer. Micro-CT scans were performed before and after the PSP for residues of the root canal filling (1) and analysis of apical displacement (2). Data were analyzed by using 2-way repeated measurement ANOVA (1) and 2-way ANOVA (2) followed by the Tukey's test (a=0.05). Significance effect on the residues percentage remaining for methods (p=0.044), for moments (p=0.006), for thirds repetition (p<0.001), and for interaction between methods and thirds (p<0.001), and moments and thirds (p=0.044). Significance effect on the apical displacement of root canal filing was detected for methods (p=0.008), however no difference was found between moments (p=0.617). In general, PSP using drill resulted in more homogeneous root canal preparation, mainly when made immediately. For all other combinations between methods and moments for PSP, the middle and apical thirds presented significant higher residues remaining. Thermo method performed in both moments and the drill method performed immediately had displacement in the apical direction, representing extrusion of the root filling material.


Resumo O objetivo deste estudo foi avaliar a presença de resíduos após o alívio do canal (AC) e verificar se o deslocamento apical da guta-percha foi afetado pelos momentos e métodos de AC em dentes obturados pela técnica do cone único. Os canais radiculares de 20 dentes incisivos bovinos foram instrumentados com Reciproc e obturados com cone único e AH Plus. As amostras foram divididas em 4 grupos de acordo com o momento e método de AC (n=5): broca imediato, termocompactador imediato, broca tardio e termocompactador tardio. Escaneamentos em micro-CT foram realizados antes e após o AC para análise dos resíduos da obturação (1) e do deslocamento apical (2). Os dados foram analisados empregando ANOVA em 2 fatores com medida repetida (1), ANOVA em dois fatores (2), seguidas do teste de Tukey (α=0,05). A porcentagem de resíduos remanescentes foi influenciada pelos métodos (p=0,044), momentos (p=0,006), pelo fator de repetição terços do canal (p<0,001), e pelas interações entre métodos e terços (p<0,001), e momentos e terços (p=0,044). Já para o deslocamento apical da obturação do canal radicular foi detectada influência significativa para os métodos (p=0,008), no entanto, nenhuma diferença foi encontrada entre os momentos (p=0,617). Em geral, AC usando brocas resultou em preparo mais homogêneo dos canais radiculares, principalmente quando realizado imediatamente após a obturação. Para todas as outras combinações entre métodos e momentos de AC, o terço médio e apical apresentaram significativamente maiores resíduos remanescentes. O método termo realizado nos dois momentos e o método broca de preparo realizado imediatamente resultaram em deslocamento na direção apical, representando a extrusão do material de obturação no canal radicular.


Subject(s)
Animals , Root Canal Filling Materials , Dental Pulp Cavity , Root Canal Obturation , Cattle , Root Canal Preparation , Retreatment , X-Ray Microtomography , Gutta-Percha
18.
Article in Korean | WPRIM | ID: wpr-811311

ABSTRACT

PURPOSE: To compare the efficacy of intravitreal dexamethasone implants according to previous response to bevacizumab treatment in patients with diabetic macular edema (DME).METHODS: Forty-nine eyes of 49 patients who received intravitreal dexamethasone implants for DME were reviewed retrospectively. Of these patients, 13 were treatment-naïve and 36 had previously received intravitreal injections of bevacizumab. Of the 36 previously treated patients, 24 comprised a refractory group showing no response to previous injections, and 12 comprised a responder group showing a response to previous treatments. The best-corrected visual acuity, central macular thickness (CMT), and retreatment percentages were assessed monthly for 6 months.RESULTS: After the intravitreal dexamethasone implants, visual acuity improved significantly over 6 months in the treatment-naïve group, while in the responder group, a significant improvement in visual acuity was seen at the 2-month follow-up. In the refractory group, there was no significant improvement in visual acuity during the follow-up period. The CMT showed a significant decrease in all three groups, and there was no significant difference in the CMT among the three groups at any time point. Five patients in the treatment-naive group (38.5%), 19 patients in the refractory group (79.2%), and nine patients in the responder group (75.0%) needed retreatment for recurrent macular edema, and there was a significant difference among the three groups in the rate of recurrence (p = 0.034).CONCLUSIONS: In DME patients, intravitreal dexamethasone implants were associated with a significant anatomical improvement irrespective of previous bevacizumab treatment response. However, the treatment-naïve and responder groups showed improvements in visual acuity, whereas the refractory group showed limited improvement.


Subject(s)
Bevacizumab , Dexamethasone , Follow-Up Studies , Humans , Intravitreal Injections , Macular Edema , Recurrence , Retreatment , Retrospective Studies , Visual Acuity
20.
Rev. chil. med. intensiv ; 35(3)2020. ilus
Article in Spanish | LILACS | ID: biblio-1292491

ABSTRACT

Posterior a una extubación programada existe un porcentaje de pacientes que fracasa y requiere reintubación (~20%), este evento es conocido como fracaso de extubación, el cual se asocia con mayor morbimortalidad. Para prevenir el fracaso de extubación se han propuesto terapias como la ventilación no invasiva (VNI) y la cánula nasal de alto flujo (CNAF). Estas terapias son capaces de entregar soporte respiratorio postextubación y justifican su uso en los efectos fisiológicos que son capaces de inducir, en dónde el impacto sobre el esfuerzo respiratorio e intercambio de gases sería fundamental. Con esta racionalidad fisiológica se han desarrollado diversos estudios en diferentes contextos clínicos, esto con el fin de dilucidar cuál terapia es la mejor alternativa. En esta revisión narrativa pretendemos describir y analizar los diversos efectos fisiológicos que induce la VNI y la CNAF


Subject(s)
Humans , Oxygen Inhalation Therapy , Respiratory Insufficiency/therapy , Airway Extubation/methods , Noninvasive Ventilation/methods , Respiratory Insufficiency/physiopathology , Ventilator Weaning , Work of Breathing/physiology , Functional Residual Capacity/physiology , Retreatment , Cannula , Intensive Care Units , Intubation, Intratracheal/methods , Lung Volume Measurements/methods
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