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1.
Rev. Odontol. Araçatuba (Impr.) ; 43(2): 43-48, maio-ago. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1362032

ABSTRACT

Casos de fraturas dentárias oblíquas muitas vezes possuem um prognóstico desfavorável, geralmente com indicação da extração do elemento dental. O presente artigo visou relatar o tratamento do caso clínico de um paciente do sexo masculino, 12 anos, que compareceu à Unidade de Saúde Bucal do Hospital Universitário de Brasília com encaminhamento de extração do dente 12, apresentando fratura oblíqua que se estendia subgengivalmente na face vestibular. O trauma havia ocorrido há três anos e o paciente havia sido submetido a diversas intervenções endodônticas, apresentando no momento da consulta inicial por nossa equipe uma lesão periapical extensa. Após a realização da anamnese, exame clínico e radiográfico, foi adotada uma abordagem multidisciplinar conservadora com a manutenção do dente e a realização da enucleação da lesão periapical por meio de intervenção cirúrgica e posterior reabilitação. Em uma mesma sessão, foi realizada a obturação do conduto com cone de guta percha e cimento sealer 26 e a cirurgia parendodôntica juntamente com a apicoplastia. Uma semana após a intervenção cirúrgica foi realizada restauração classe IV com resina composta baseada no enceramento dos modelos de diagnóstico montados em articulador. Com base em uma avaliação criteriosa e multidisciplinar, foi possível adotar uma abordagem conservadora no caso em questão, com a manutenção e reabilitação de um dente permanente em um paciente jovem, evitando a indicação de exodontia(AU)


Cases of oblique dental fractures often have an unfavorable prognosis, usually with the indication of extraction of the dental element. The present article aimed to report the treatment of the clinical case of a 12-year-old male patient, who attended the Oral Health Unit of the Hospital Universitário de Brasília with a referral for extraction of tooth 7, presenting an oblique fracture that extended subgingivally on the labial surface. The trauma had occurred three years ago and the patient had undergone several endodontic interventions, presenting an extensive periapical lesion at the time of the initial consultation by our team. After anamnesis, clinical and radiographic examination, a conservative multidisciplinar approach was adopted with the maintenance of the tooth and the enucleation of the periapical lesion through surgical intervention and subsequente rehabilitation. In the same session, the conduit was filled with gutta-percha cone and sealer cement 26 and parendodontic surgery was performed together with apicoplasty. One week after the surgical intervention, class IV restoration was performed with composite resin based on the waxing of the diagnostic models mounted on an articulator. Based on a careful and multidisciplinary evaluation, it was possible to adopt a conservative approach in the case in question, with the maintenance and rehabilitation of a permanent tooth in a young patient, avoiding the indication of extraction(AU)


Subject(s)
Humans , Male , Child , Tooth Fractures/therapy , Dental Pulp Cavity/surgery , Dental Pulp Cavity/injuries , Periapical Abscess , Root Canal Therapy , Tooth Fractures , Tooth Fractures/surgery , Tooth Fractures/diagnosis , Incisor
2.
Rev. Salusvita (Online) ; 40(3): 61-82, 2021.
Article in Portuguese | LILACS | ID: biblio-1524802

ABSTRACT

O acesso à cavidade pulpar é a etapa do tratamento endodôntico que tem como objetivo expor a embocadura dos canais radiculares. Por muito tempo, o formato ideal da cavidade era aquele que proporcionasse a criação de uma trajetória reta ao canal, com a remoção completa do teto da câmara pulpar. Porém, nas últimas décadas, foi investigado um desgaste excessivo de dentina que possibilita a redução da resistência do dente. Então, propuseram novo formato de cavidade de acesso, que permite a preservação máxima possível das estruturas de suporte, objetivando aumentar a resistência de dentes tratados endodonticamente. Apesar das vantagens, supostamente atribuídas aos acessos minimamente invasivos, esse formato tem sido questionado por dificultar a visibilidade da entrada dos canais, localização, e possibilidade de deixar áreas intocadas nas paredes dos canais. Diante disso, este trabalho realizou um levantamento bibliográfico a fim de verificar se há consistência científica quanto à interferência do acesso coronário na resistência dentária. Concluiu-se que o acesso minimamente invasivo não apresentou diferença quanto ao aumento da resistência à fratura de dentes tratados endodonticamente quando comparado ao acesso tradicional, entretanto, o tema ainda é relevante e os benefícios dessa técnica devem ser investigados clinicamente a longo prazo.


Access to the pulp cavity is the stage of endodontic treatment that aims to expose the mouth of the root canals. For a long time, creating a straight path to the canal, with the complete removal of the pulp chamber roof, was the ideal cavity format. However, in recent decades, excessive dentin wear, which makes it possible to reduce tooth strength, has been investi-gated. So, a new access cavity format, which allows the maximum possible preservation of the support structures, was proposed to increase the resistance of endodontically treated teeth. Despite the advantages supposedly attributed to minimally invasive accesses, this format has been questioned for hindering the visibility of the entrance to the channels, the location, and the possibility of leaving untouched areas on the walls of the channels. Therefore, this work carried out a bibliographical survey to verify the scientific consistency regarding the interference of coronary access in dental resistance. The minimally inva-sive access showed no difference regarding increased fracture resistance of endodontically treated teeth compared to the traditional access. However, the topic is still relevant, and its benefits, in the long term, should be clinically investigated.


Subject(s)
Root Canal Therapy/trends , Root Canal Therapy , Dental Pulp Cavity/surgery , Endodontics/methods
3.
Arq. odontol ; 57: 199-207, jan.-dez. 2021. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1348086

ABSTRACT

Objetivo: Comparar o aumento percentual da área da secção reta transversal de canais radiculares, no nível de 3 mm aquém do ápice radicular, após instrumentação com dois sistemas de instrumento único. Métodos: Dezenove primeiros molares inferiores extraídos tiveram as raízes mesiais seccionadas no nível de 3 mm aquém do ápice radicular, sendo os 2 milímetros finais de cada raiz removidos e descartados, para proceder a mensuração da área pré-operatória, através de estereomicroscopia. As raízes foram instrumentadas com os sistemas SAF e Reciproc R25.08 e procedeu-se nova mensuração para comparação do aumento percentual da área. O aumento percentual da área da secção reta transversal foi comparado e analisado estatisticamente pelo teste t de Student. O nível de significância foi estabelecido em 5% (p < 0,05). Resultados: O aumento percentual da área dos canais foi significativamente maior para o grupo Reciproc (p = 0,001) em comparação com o grupo SAF. Os canais instrumentados com o sistema SAF tiveram sua área aumentada em média 53,5%, enquanto que nos instrumentados com o sistema Reciproc a média foi 154,5%. Conclusão: O sistema Reciproc proporcionou um aumento percentual da área da secção reta transversal dos canais radiculares, no nível dos 3 mm apicais, 3 vezes maior que o sistema SAF.


Aim: To compare the percentage increase in the cross-sectional area of root canals, at the level of 3 mm from the root apex after instrumentation with two single instrument systems. Methods: The roots of 19 extracted mandibular first molars were sectioned 3 mm short of the apex level, with the final 2 millimeters of each root removed and discarded in order to enable the preoperative area to be measured by stereomicroscopy. Subsequently, the roots were instrumented with the SAF and Reciproc 25/.08 systems, alternating the technique used per canal from root to root, and a new measurement was performed. After, the percentage increase in area was calculated considering the values of the original and the final area. The Student'st-test was applied to the results, with a level of significance set at 5%. Results: The percentage increase in area of the root canals was significantly higher for the Reciproc (p = 0.001) when compared to the SAF group. In the canals instrumented with the SAF system, the mean increase in area was 53.5%, while in those using the Reciproc system, it was 154.5%. Conclusion:The Reciproc system produced a 3-fold higher percentage increase in the cross-sectional area of the root canals at the level of 3 mm from the root apex than did the SAF system.


Subject(s)
Humans , Tooth Root/surgery , Root Canal Preparation/instrumentation , Dental Pulp Cavity/surgery , Dental Instruments
4.
Int. j. odontostomatol. (Print) ; 14(3): 358-362, 2020. graf
Article in English | LILACS | ID: biblio-1114907

ABSTRACT

In patients who need endodontic re-treatment, and where the prognosis for surgical or non-surgical re-treatment is poor or treatment may be risky, one alternative is to opt for extraction of the affected tooth and replacement by an implant. However treatment by intentional reimplantation (IR) is also a possibility. The object of the present study was to present a case of a patient aged 71 years who needed endodontic re-treatment, where IR treatment was selected. The patient reported spontaneous pain which disappeared completely with the use of analgesics. This tooth had previously been treated endodontically around 1 year earlier, and no pain was reported in the first two months after treatment.Nonetheless, about 3 months before the present consultation, intensity of the symptoms had increased with a sensation of pressure in the apical-coronal direction. Cone-beam computerised tomography (CBCT) showed a periapical lesion in tooth 3.7. Based on the clinical and imaging examinations, acute apical periodontitis was diagnosed in tooth 3.7.The tooth was treated by IR. It was carefully extracted and inspected for cracks or perforations. It was treated under the microscope with root resection, and then retrograde obturation was carried out with bioceramic material. The tooth was then repositioned in its alveolus. It was immobilised for 15 days, after which the patient could return gradually to normal masticatory function. In the 6 months check-up the patient presented no pain or sensitivity to percussion. No root resorption or periapical radiolucency was observed in the periapical X-ray. We conclude that IR is an alternative to extraction followed or not by prosthetic treatment, for patients who need endodontic re-treatment. The treatment presents good levels of success, and of acceptance by the patient.


En pacientes que necesitan de retratamiento endodóntico y el retratamiento quirúrgico o no quirúrgico tiene un pronóstico desfavorable o puede ser riesgoso, se puede optar por la extracción del diente afectado y su reemplazo por implante o se puede elegir el tratamiento mediante la técnica de reimplante intencional (RI). El objetivo del presente estudio fue presentar un caso de paciente de 71 años con necesidad de retratamiento endodóntico, donde se optó por la realización del RI. Paciente relatava dolor espontáneo que desaparecia completamente con el uso de analgésicos. Este diente ya había sido tratado endodónticamente hace alrededor de 1 año, y el paciente noreportó dolor en los primeros dos meses después del tratamiento.No obstante, hace aproximadamente 3 meses la intensidad de los síntomas aumentó, junto con la sensación de presión en el sentido ápice-corona. La tomografía computarizada cone-beam (TCCB) mostró lesión periapical en el diente 3.7. Basado en el examen clínico e imagenológico se diagnosticó periodontitis apical aguda en el diente 3.7.Para el tratamiento se realizó la técnica de RI, siendo extraído el diente cuidadosamente, e inspeccionado a fin de localizar fisuras o perforaciones. El diente fue tratado bajo microscopio y se realizó la resección de la raíz. Se realizó la obturación retrógrada con material biocerámico. Enseguida el diente fue reposicionado en su alveolo, la inmovilización fue realizada durante 15 días y la paciente logró retornar gradualmente a su función masticatoria. En el seguimiento de 6 meses la paciente no presentó dolor o sensibilidad a la percusión. En la radiografía periapical no se observó resorción radicular o radiolucencia periapical. Concluimos que el RI en pacientes que necesitan retratamiento endodóntico es una alternativa a la realización de la exodoncia seguida o no, de tratamiento protético, donde existe una buena aceptación por parte del paciente y éxito en el tratamiento.


Subject(s)
Humans , Female , Aged , Periodontitis , Tooth Replantation/methods , Dental Pulp Cavity/surgery , Molar/surgery
5.
Acta odontol. latinoam ; 32(2): 51-56, Aug. 2019. tab
Article in English | LILACS | ID: biblio-1038158

ABSTRACT

The aim of this study was to evaluate the degree of penetration of obturation cement in artificial lateral canals after Passive Ultrasonic Irrigation (PUI) with ethylenediaminetetraacetic acid (EDTA) for different times. Fifty upper molar palatine roots were used, in which two artificial lateral canals were made at distances of 7 and 3 millimeters from the root apex. After instrumentation and drying the canal, the final toilet stage was performed on five groups (n = 10), as follows: G1 - EDTA 17% + PUI for 10 seconds; G2 - EDTA 17% + PUI for 20 seconds; G3 - EDTA 17% + PUI for 30 seconds; G4 - EDTA 17% + PUI for 60 seconds; G5 - EDTA 17% + activation by instrument R50 for 5 minutes (Control). The canals were sealed by the single cone technique, and after 72 hours, sectioned in two planes transverse to the artificial canal, to see the degree of penetration of the sealing cement. In the radiographic analysis, there was no statistical difference (p> 0.05) between groups in the two artificial lateral canals. However, PUI of EDTA for 60 seconds produced a significant difference in the degree of penetration of the sealing cement (p <0.05) at 7 mm from the apex. Therefore, PUI with EDTA for 60 seconds promoted a higher degree of penetration of the obturator cement in the artificial lateral canal.


O objetivo deste trabalho foi avaliar o grau de penetração do cimento obturador em canais laterais artficiais, após Irrigação Ultrassonica Passiva (IUP) do ácido etilenodiaminotetracético (EDTA), em diferentes tempos. Foram utilizadas 50 raízes palatinas de molares superiores, e em seguida confeccionados dois canais laterais artificiais a 7 e 3 milímetros do ápice radicular. Após a instrumentação e secagem dos canais, foi iniciada a etapa de toillet final, de acordo com os seguintes grupos (n=10): G1- EDTA 17%+IUP durante 10 segundos; G2 - EDTA 17%+IUP durante 20 segundos; G3 - EDTA 17%+IUP durante 30 segundos; G4- EDTA 17%+IUP durante 60 segundos; G5- EDTA 17%+ativação pelo instrumento R50 durante 5 minutos (Controle). Os canais foram obturados pela técnica do cone único, e após 72 horas, seccionados em dois planos transversais dos canais artificiais, para se visualizar o grau de penetração do cimento obturador. Na análise radiográfica, não houve diferença estatística (p>0,05) entre os grupos, nos dois canais laterais artificiais. Entretanto, a IUP do EDTA por 60 segundos conseguiu um obter resultado significativo, sobre o grau de penetração do cimento obturador (p<0,05) a 7 milímetros do ápice. Portanto, a IUP do EDTA no tempo de 60 segundos promoveu maior grau de penetração do cimento obturador nos canais laterais artifciais.


Subject(s)
Humans , Root Canal Filling Materials/pharmacology , Root Canal Irrigants/pharmacology , Ultrasonic Therapy , Dentin/metabolism , Therapeutic Irrigation/methods , Sodium Hypochlorite/pharmacology , Tooth Root/diagnostic imaging , Edetic Acid/pharmacology , Root Canal Preparation , Dental Pulp Cavity/surgery
6.
Braz. dent. j ; 29(3): 245-248, May-June 2018. tab
Article in English | LILACS | ID: biblio-951544

ABSTRACT

Abstract The aim of this study was to compare the amount of apically extruded debris during root canal instrumentation using ProTaper Next (PTN), Twisted File (TF) Adaptive, and Reciproc instruments. Forty-five extracted human maxillary canines were selected and randomly assigned into 3 groups. The root canals were prepared using PTN instruments with continuous rotation (n=15), TF Adaptive instruments with adaptive motion (n=15), Reciproc instruments with reciprocating motion (n=15). During the preparations, canals were irrigated using distilled water and material extruded apically was collected in pre-weighed Eppendorf tubes. After a 5-day drying period in an incubator, the tubes were weighed and the dry weight of the extruded debris was calculated. Data distributions were assessed via the Shapiro-Wilk test, and groups were compared via the Kruskal-Wallis test. The greatest amount of debris extruded by TF Adaptive and the least by PTN, but the difference was insignificant between groups (p=0.259). All instrumentation systems were associated with debris extrusion.


Resumo O objetivo deste estudo foi comparar a quantidade de detritos apicalmente extruídos durante a instrumentação do canal radicular usando os instrumentos ProTaper Next (PTN), Twisted File (TF) Adaptative e Reciproc. Quarenta e cinco caninos superiores humanos extraídos foram selecionados e distribuídos aleatoriamente em 3 grupos. Os canais radiculares foram preparados utilizando instrumentos PTN com rotação contínua (n = 15), instrumentos TF Adaptative com movimento adaptativo (n = 15), instrumentos Reciproc com movimento oscilatório (n = 15). Durante os preparos, os canais foram irrigados com água destilada e o material extruído foi coletado apicalmente em tubos Eppendorf pré-pesados. Após um período de secagem de 5 dias numa incubadora, os tubos foram pesados e o peso seco dos resíduos extruídos foi calculado. A distribuição dos dados foi avaliada pelo teste de Shapiro-Wilk e os grupos foram comparados pelo teste de Kruskal-Wallis. A maior quantidade de detritos extruídos foi proporcionada pelo TF Adaptive e a menor pelo PTN, mas a diferença não foi estatisticamente significante entre os grupos (p=0,259). Todos os sistemas de instrumentação promoveram extrusão de detritos apicalmente.


Subject(s)
Humans , Apicoectomy/instrumentation , Rotation , Root Canal Preparation/instrumentation , Tooth Apex/surgery , Dental Pulp Cavity/surgery , Motion , In Vitro Techniques , Cuspid , Equipment Design , Therapeutic Irrigation , Maxilla
7.
Article in English | IMSEAR | ID: sea-159512

ABSTRACT

Discovery of a foreign object in the root canal is unusual and rare. Forceful lodgement or impaction of the foreign object in the pulp chamber or root canal is usually accidental. It is seen more often among children with habits of chewing and placing various objects in the oral cavity. Despite new advances and a large understanding about the root canal morphology, retrieval of foreign objects from the root canal is still a challenging procedure to the endodontists. Exposed pulp chamber due to trauma or tooth left open for drainage after root canal access opening are predisposing factors to foreign body lodgement. The impacted foreign objects in root canals may act as a source in causation of discomfort, pain, infection, and swelling. An attempt to retrieve any foreign body from the root canal may increase the chances of its further apical displacement and firm lodgement in the apical third of the root invariably risking the prognosis of the tooth involved. The present case report describes an inadvertently broken sewing needle in the root canal of the permanent maxillary left central incisor with periapical abscess and its successful retrieval by non-surgical orthograde endodontic treatment.


Subject(s)
Child , Dental Pulp Cavity/injuries , Dental Pulp Cavity/surgery , Endodontics/methods , Endodontics/therapeutic use , Endoscopy/statistics & numerical data , Foreign Bodies/injuries , Foreign Bodies/surgery , Humans , Male , Needles , Root Canal Obturation
8.
Article in English | IMSEAR | ID: sea-159433

ABSTRACT

Clinicians may encounter morphological variations in the form of extra roots and extra root canals. Favorable endodontic treatment requires extensive study of the internal anatomy of teeth. The literature reiterates the incidence of more than three canals in mandibular molar. Radix entomolaris (RE) may complicate the root canal treatment of the tooth if left undiagnosed. The middle mesial canal is more common when compared to the middle distal canal. The combination of RE and three distal canals is a rare occurrence. This case report presents a discussion of root canal therapy in a left mandibular first molar with RE and five root canals.


Subject(s)
Adult , Dental Pulp Cavity/abnormalities , Dental Pulp Cavity/anatomy & histology , Dental Pulp Cavity/surgery , Humans , Male , Mandible , Molar/abnormalities , Molar/anatomy & histology , Molar/surgery , Root Canal Therapy , Tooth Root/abnormalities , Tooth Root/anatomy & histology , Tooth Root/surgery
9.
Rev. Salusvita (Online) ; 33(2)2014. ilus
Article in Portuguese | LILACS | ID: lil-737175

ABSTRACT

Um dos fatores determinantes para o sucesso do tratamento endodôntico é a determinação correta do comprimento de trabalho, pois através dele que elegemos o limite da instrumentação e da obturação evitando assim injúrias aos tecidos periapicais. Objetivo: O presente estudo teve como objetivo realizar uma análise comparativa in vitro da precisão de três localizadores foraminais, sendo eles Root ZX mini, Joypex 5 e T-Root VI. Método: Foram selecionados 30 dentes incisivos inferiores humanos extraídos. Após o acesso coronário, foi realizada a mensuração com o auxilio de um instrumento tipo K n°10 até sua ponta ser observada no forame apical com ajuda de um microscópio cirúrgico com x 50 de magnificação. Os dentes foram imersos em recipiente de plástico contendo alginato, e mensurados com os três localizadores foraminais calibrados em "Apex". Foi considerado Preciso, se a mensuração foi coincidente com comprimento real do dente; Aceitável, se a distância da medida for ate 0,5mm aquém do forame apical; e Errônea, se os valores das medidas forem menores que a medida Aceitável ou forem além do comprimento real do dente. Os dados foram submetidos aos testes de ANOVA e Tuckey (p<0,05). Resultados: Os valores observados mostraram não haver diferença estatisticamente significante (p>0.05) entre as medidas realizadas com os localizadores e o comprimento real do dente. Conclusão: Os resultados confirmam que todos dispositivos eletrônicos avaliados podem determinar com precisão o comprimento do canal radicular...


One of the most relevant factors for the success of endodontic treatment is the correct determination of the working length, since it will determine the limit of shaping and filling avoiding injuries to the periapical tissues. Objective: The aim of the present study was to compare the accuracy of three electronic apex locators: Root ZX mini, Joypex 5 and T- Root IV. Method: Thirty extracted single-rooted human incisors, extracted for reasons not related to this study, were selected and accessed. Then, the measurement of the specimens was determinated by inserting a size 10 K-file into the root canal until its tip was visible at the apical foramen by using surgical microscope at X50 magnification. The teeth were embedded in an alginate model and the analysis using the apex locators were made. The measurement restricted to 00 mm of the apical foramen (real tooth length) was classified as accurate, if the distance was determinated 0.5 mm short of the apical foramen as acceptable, and if the values of the measures were larger or smaller than the acceptable measures was classified as inaccurate. Statistical analysis was performed using ANOVA and Tuckey test (p < 0.05) Results: There were no significant differences among the three groups when electronic apex locators were used (p> 0.05). Conclusions: The results confirm that all these electronic devices can accurately determine the root canal length...


Subject(s)
Dental Pulp Cavity/surgery , Endodontics/instrumentation , Odontometry/instrumentation
10.
Braz. dent. j ; 24(3): 230-234, May-Jun/2013. tab, graf
Article in English | LILACS | ID: lil-681862

ABSTRACT

In this study, curved maxillary molar root canals were instrumented with RaCe rotary system to evaluate: 1. the occurrence of canal transportation using a radiographic platform; 2. the action of the instruments on the dentin walls, centering ability and canal enlargement by analysis of digital images; and the percentage of regular dentin surfaces and debris within the canal by histological analysis. Ten mesiobuccal roots of extracted human maxillary molars were embedded in acrylic resin and sectioned at the middle and apical thirds. Root canal shaping was performed using the RaCe rotary system at 250 rpm and 1 Ncm torque. Each instrument set was used five times according to a crown-down technique in the following sequence: 40/0.10, 35/0.08, 25/0.06, 25/0.04, 25/0.02 (working length - WL), 30/0.02 (WL) and 35/0.02 (WL). Each instrument was inserted until resistance was felt and then pulled back, followed by brushing movements towards all canal walls. Each specimen was assessed by three study methods: radiographic platform, digitized image assessment and histological analysis. The radiographic platform showed lack of apical transportation. No statistically significant difference (Wilcoxon test, p>0.05) was found between the middle and apical thirds regarding instrument action on dentin walls, centering ability, area of root canal enlargement, percentage of regular dentin surfaces and debris within the root canal. It may be concluded that RaCe system is a suitable method for the preparation of curved root canals, regarding the maintenance of root canal original path, action on dentin walls, canal enlargement and removal of debris from the root canal lumen.


O objetivo do presente estudo foi verificar a presença de desvio apical por meio da plataforma radiográfica, avaliar a ação dos instrumentos, centralização do preparo e ampliação por meio de imagens digitais do canal e calcular a porcentagem de superfícies regulares e presença de debris por meio da análise histológica. Dez raízes mésiovestibulares de molares superiores extraídos foram incluídos em blocos de resina e seccionados no terço médio e apical. O preparo do canal foi feito empregando o sistema RaCe, a 250 rpm e torque de 1 Ncm. Cada sistema rotatório foi usado 5 vezes no sentido coroa-ápice na seguinte sequência: 40/0.10, 35/0.08, 25/0.06, 25/0.04, 25/0.02 (comprimento de trabalho - CT), 30/0/02 (CT) e 35/0/02 (CT). Cada amostra foi avaliada por 3 métodos de estudo: plataforma radiográfica, imagem digital e análise histológica. A plataforma radiográfica mostrou ausência de transporte apical. Em relação à ação dos instrumentos sobre as paredes dentinárias, centralização do preparo, ampliação, porcentagem de superfícies regulares e presença de debris, o teste estatístico de Wilcoxon não mostrou diferença significativa entre os terços apical e médio. O sistema RaCe se mostrou adequado para o preparo de canais radiculares curvos em relação à manutenção do trajeto original do canal, ação sobre as paredes dentinárias, ampliação e remoção de debris da luz do canal radicular.


Subject(s)
Humans , Dental Pulp Cavity/anatomy & histology , Dentin/anatomy & histology , Root Canal Preparation/instrumentation , Dental Pulp Cavity , Dental Pulp Cavity/surgery , Dentin , Dentin/surgery , Equipment Design , Image Processing, Computer-Assisted/methods , Materials Testing , Molar/anatomy & histology , Rotation , Smear Layer/pathology , Smear Layer , Torque , Tooth Apex/anatomy & histology , Tooth Apex
11.
Article in Portuguese | LILACS, BBO | ID: lil-673926

ABSTRACT

Objetivo: Verificar in vivo a precisão e confiabilidade de leitura do localizador foraminal eletrônico Joypex 5® utilizando o microscópio eletrônico de varredura na aferição das medidas obtidas pelo aparelho. Método: Foram triados pacientes com indicação para extração por motivos ortodônticos e periodontais, o que resultou em amostra de 14 canais. Os dentes foram previamente radiografados com a intenção de detectar perfurações, tratamentos endodônticos prévios e calcificações. Realizadas as aberturas coronárias, os terços cervical e médio foram preparados e procederam-se as leituras no ponto correspondente no display do aparelho ao forame apical. Após a obtenção da medida a lima foi removida e subtraiu-se 1mm do comprimento lido em paquímetro digital para, então, fixar o instrumento e realizar a exodontia. Na seqüência foi realizado um desgaste em uma das paredes da região apical, objetivando visualizar a ponta do instrumento e a continuidade do canal até a real saída do forame apical. A distância entre a ponta da lima e a real saída foraminal foi medida com o auxílio de microscopia eletrônica de varredura. Resultados: A média das medidas foi 0,87 mm (DP 0,42mm). O teste T para amostras independentes revelou que os dados mostraram-se semelhantes (p > 0,05) entre os valores experimentais encontrados (da ponta do instrumento ao forame apical) e o valor hipotético testado de 1 mm. Conclusões: O estudo concluiu que o localizador foraminal eletrônico Joypex 5® demonstrou ser preciso e confiável na determinação de um comprimento de trabalho eficiente e seguro para o tratamento endodôntico. de trabalho eficiente e seguro para o tratamento endodôntico.


Objective: To evaluate in vivo the measurement accuracy and reliability of the electronic apex locator Joypex 5® using a scanning electron microscope to assess the measurements obtained with the tested device. Method: Patients with indication for tooth extraction for orthodontic and periodontal reasons were screened, providing a sample of 14 root canals. The teeth were first radiographed for detecting perforations, previous endodontic treatments and calcifications. After preparation of access cavities, the coronal and middle thirds were prepared and the electronic measurements were made on the point corresponding to the apical foramen of the apex locator's display. After the electronic reading, the file was removed from the canal, 1 mm was subtracted from the measurement obtained using a digital caliper, and the apex locator was fixed for extraction of the tooth. Next, grinding was performed on an apical wall in order to visualize the tip of the file and canal integrity up to the actual apical foramen opening. The distance between the file tip and the actual apical foramen opening was measured by scanning electron microscopy. Results: The mean of the obtained measurements was 0.87 mm (DP 0.42 mm). The t test for independent samples revealed statistical similarity (p>0.05) among the obtained values (from the file tip to actual apical foramen) and the hypothetical 1 mm value. Conclusion: The Joypex 5® electronic apex locator was found to be accurate and reliable for determination of an efficient and safe working length for endodontic treatment.


Subject(s)
Humans , Microscopy, Electron, Scanning/methods , Dental Pulp Cavity/surgery , Endodontics/methods , Odontometry/instrumentation , Brazil , Radiography, Dental/instrumentation , Statistics, Nonparametric
12.
Article in English | IMSEAR | ID: sea-144135

ABSTRACT

Furcal perforations are significant iatrogenic complications of endodontic treatment and could lead to endodontic failure. Mineral trioxide aggregate (MTA) has been regarded as an ideal material for perforation repair, retrograde filling, pulp capping, and apexification. This case report describes a furcal perforation in a maxillary first molar, which was repaired using MTA. The tooth was endodontically treated and coronally restored with resin composite. After 2 years, the absence of periradicular radiolucent lesions, pain, and swelling along with functional tooth stability indicated a successful outcome of sealing the perforation using MTA.


Subject(s)
Aluminum Compounds/therapeutic use , Chlorhexidine/therapeutic use , Dental Pulp Capping/methods , Dental Pulp/injuries , Dental Pulp/surgery , Dental Pulp Cavity/injuries , Dental Pulp Cavity/surgery , Dental Pulp Cavity/therapy , Humans , Lidocaine/therapeutic use , Silicates/therapeutic use , Tooth Injuries/etiology , Tooth Injuries/therapy
13.
Braz. dent. j ; 23(2): 122-126, Mar.-Apr. 2012. ilus, tab
Article in English | LILACS | ID: lil-626299

ABSTRACT

Since instrumentation of the apical foramen has been suggested for cleaning and disinfection of the cemental canal, selection of the file size and position of the apical foramen have challenging steps. This study analyzed the influence of apical foramen lateral opening and file size can exert on cemental canal instrumentation. Thirty-four human maxillary central incisors were divided in two groups: Group 1 (n=17), without flaring, and Group 2 (n=17), with flaring with LA Axxess burs. K-files of increasing diameters were progressively inserted into the canal until binding at the apical foramen was achieved and tips were visible and bonded with ethyl cyanoacrylate adhesive. Roots/files set were cross-sectioned 5 mm from the apex. Apices were examined by scanning electron microscopy at ×140 and digital images were captured. Data were analyzed statistically by Student’s t test and Fisher’s exact test at 5% significance level. SEM micrographs showed that 19 (56%) apical foramina emerged laterally to the root apex, whereas 15 (44%) coincided with it. Significantly more difficulty to reach the apical foramen was noted in Group 2. Results suggest that the larger the foraminal file size, the more difficult the apical foramen instrumentation may be in laterally emerged cemental canals.


Tendo em vista que a instrumentação do forame apical tem sido sugerida para a limpeza e desinfecção do canal cementário, a seleção do calibre do instrumento e a posição do forame apical representam passos desafiantes. Este estudo analisou a influência que a saída lateral do forame apical e o calibre do instrumento podem exercer na instrumentação do canal cementário. Trinta e quatro incisivos centrais superiores foram divididos em dois grupos: Grupo 1 (n=17), sem preparo cervical, e Grupo 2 (n=17), com preparo cervical com brocas LA Axxess. Limas K com aumentos de diâmetro foram progressivamente inseridas no canal até ajustar no forame apical e as pontas ficarem visíveis e foram fixadas com adesivo de etil cianoacrilato. Os conjuntos raízes/limas foram seccionados transversalmente a 5 mm aquém do ápice. Os ápices foram examinados por microscopia eletrônica de varredura com aumento de 140x e imagens digitais foram capturadas. Os dados foram examinados estatisticamente pelo teste t de Student e teste exato de Fischer com nível de significância de 5%. A microscopia eletrônica de varredura mostrou que 19 (56%) dos forames apicais saíram lateralmente em relação ao ápice radicular, enquanto que 15 (44%) coincidiram com ele. Dificuldade significantemente maior para chegar ao forame apical foi observada no Grupo 2. Os resultados sugerem que quanto mais calibroso for o instrumento foraminal, mais difícil poderá ser a instrumentação do forame apical em canais cementários que apresentam saída lateral.


Subject(s)
Humans , Dental Cementum/surgery , Dental Pulp Cavity/surgery , Root Canal Preparation/instrumentation , Tooth Apex/surgery , Dental Cementum/anatomy & histology , Dental Pulp Cavity/anatomy & histology , Incisor , Microscopy, Electron, Scanning , Root Canal Preparation/methods , Tooth Apex/anatomy & histology
14.
Acta odontol. venez ; 50(1)2012. ilus
Article in Spanish | LILACS | ID: lil-676747

ABSTRACT

El objetivo del reimplante intencional, es mantener en boca un órgano dental que de otra manera debería ser extraído debido a complicaciones específicas de la pieza o por decisión particular del paciente. Se presenta el caso de un paciente masculino de 35 años de edad que acude a consulta por presentar dolor e inflamación en región maxilar derecha acompañado de fractura de premolar en el área, al examen radiográfico se observa zona radiolúcida periapical asociada a las raíces vestibular y palatina escogiéndose como alternativa de tratamiento el reimplante intencional. Se programan controles clínicos y radiográficos a los 15 días, 40 días, seis meses, y un año postquirúrgicos observando evidencia de remodelado óseo, un sondaje de 3mm y ausencia de sintomatología dolorosa y reabsorción dental. Los resultados observados en este caso sugieren que esta opción de tratamiento podría ser empleada en casos donde se presentan complicaciones que impiden el abordaje endodóntico convencional o quirúrgico y donde las posibilidades de conservar el diente en boca son escasas.


The objective of the intentional replantation is to keep a tooth in mouth that otherwise should be extracted due to its specific complications or due to the patient decision. This is a case report presented in a 35-year-old male patient with complaint of discomfort and sensitivity in the maxillary right area and premolar fracture, radiograph examination revealed a large periapical radiolucent area surrounding both buccal and palatine roots, intentional replantation was suggested as an alternative to save the tooth. The patient returned for clinical and radiographic follow-up at 15 days, 40 days, 6 months and 12 months, x-ray shows good apical healing and no evidence of root resorption, no painful symptomatology was reported, probing depth was no greater than 3 mm. The results observed after this procedure show that intentional replantation could be used when complications do not allow a conventional endodontic or surgical approach and the possibilities to maintain a tooth in mouth is low.


Subject(s)
Humans , Male , Adult , Dental Pulp Cavity/surgery , Surgery, Oral/methods , Dental Implants , Ambulatory Surgical Procedures/methods
15.
Article in English | IMSEAR | ID: sea-139731

ABSTRACT

Objectives: The purpose of this study was to compare root canal preparation in curved canals in molar teeth with the rotary NiTi Mtwo and ProTaper systems in terms of canal shape and smear layer. Materials and Methods: Mesiobuccal canals of 60 molar teeth with angles of curvature between 25 and 35 degrees were prepared with a torque controlled low speed engine; 30 canals for each system. Each individual instrument was used to prepare four root canals and the time required for preparation was recorded. Standardized radiographs were taken before and following instrumentation and used to determine changes in canal curvature. Results: There was no significant difference in preparation time between the two systems. No instruments separated during use. The Mtwo system gave a statistically smaller change in canal curvature and thus was better for maintaining the original shape of the root canal, with less transportation (P less than 0.05). The greatest difference was seen for maxillary molar teeth. When prepared root canals were examined by SEM there was no difference between the two systems at the coronal, middle or apical thirds. Conclusion: Overall, the results of this study suggest that Mtwo instruments are preferable for situations where canals are curved, particularly for maxillary molars.


Subject(s)
Analysis of Variance , Dental Instruments , Dental Pulp Cavity/anatomy & histology , Dental Pulp Cavity/surgery , Endodontics/instrumentation , Endodontics/methods , Equipment Design , Humans , Mandible , Maxilla , Molar/anatomy & histology , Molar/diagnostic imaging , Molar/surgery , Root Canal Preparation/instrumentation , Root Canal Preparation/methods , Smear Layer , Time Factors
16.
Arq. ciências saúde UNIPAR ; 13(1): 55-58, jan.-abr. 2009. ilus
Article in Portuguese | LILACS | ID: lil-554417

ABSTRACT

O presente trabalho relata o caso clínico de uma paciente com leve sensibilidade e presença de fístula no primeiro pré-molar superior direito, que já tinha sido submetido a tratamento endodôntico com complementação cirúrgica. O exame radiográfico revelou um erro de diagnóstico na identificação do número de canais, uma vez que era possível identificar a presença de três canais e três raízes no referido elemento, sendo que apenas os canais disto-vestibular e palatino encontravam-se preenchidos com material obturador, enquanto o canal mésio-vestibular, além de vazio, tinha no ápice a presença de material radiopaco. Restabeleceu-se uma cavidade de acesso e remoção do material obturador com o auxílio de uma broca de Gates-Glidden número 3, dos terços médio e cervical, e com uma lima do tipo Kerr número 25 combinada com o solvente Eucaliptol, do terço apical. Após a realização do preparo biomecânico pela Técnica Mista Invertida, promoveu-se a renovação de variadas substâncias como curativo de demora, por um período que se estendeu por 30 dias. Contudo, não foi possível observar regressão da fístula, o que motivou a realização da obturação dos canais radiculares promovendo-se um extravasamento proposital de material obturador através do forame apical removido através de uma curetagem apical. Ao longo de 16 meses, um acompanhamento clínico e radiográfico revelou o desaparecimento do trajeto fistuloso, ausência de sensibilidade à palpação e/ou percussão e restauração da dimensão normal do espaço periodontal, caracterizando o sucesso do tratamento realizado.


The present work reports a clinical case of a patient with light sensibility and fistula presence in the right maxillary first premolar that had already been submitted to endodontic treatment with surgical complementation. The radiographic exam revealed a diagnosis misinterpretation in the identification of the number of canals, once it was possible to identify the presence of three canals and three roots in the referred element, and just the distobuccal and palatine canals were filled out with endodontic material, while the mesiobuccal canal, was not only empty, but there was also the presence of radiopaque material in the apex. It was recovered an access cavity and the material was removed through a Gates-Glidden drill number 3, by medium and cervical thirds, and a file type Kerr number 25 combined with the solvent Eucalyptol of the apical third. After the accomplishment of the biomechanical preparation for the Inverted Mixed Technique, the renewal varied substances was promoted as a delay curative, for a period that extended for 30 days. As it was not possible to observe regression of the fistula, the accomplishment of the filling of the root canals was realized and it brought along a deliberate extrude of material through the apical foramen that was removed through a curettage apical. For the next 16 months a clinical and radiographic attendance revealed the disappearance of the fistulous itinerary, a sensibility absence in palpation and/or percussion and restoration of the normal dimension of the periodontal space characterizing the success of the accomplished treatment.


Subject(s)
Humans , Bicuspid , Dental Pulp Cavity/surgery , Dental Pulp Cavity/injuries , Dental Fistula , Dentist-Patient Relations
17.
Braz. dent. j ; 20(4): 284-289, 2009. ilus, tab
Article in English | LILACS | ID: lil-536316

ABSTRACT

The aim of this study was to evaluate the cleaning capacity of Profile .04 files combined with different irrigating solutions in flattened root canals using histological, morphometrical and SEM analyses. Eighty human mandibular incisors were prepared with Profile .04 instruments and randomly divided into 4 groups according to the irrigating solutions used (n=20): G1: distilled water (control); G2: 1 percent sodium hypochlorite (NaOCl); G3: 1 percent NaOCl alternated with 17 percent EDTA, and G4: 1 percent NaOCl with RCPrep cream. Ten teeth of each group were evaluated with an optical microscope to determine the percentage of root canal debris. The remaining teeth were evaluated under scanning electron microscopy (SEM). Data were analyzed statistically by ANOVA and Tukey's test (á=0.01).There was a significant difference (p<0.001) among the groups regarding the percentage of debris left in the canals (distilled water: 18.82 ± 5.55; 1 percent NaOCl: 6.29 ± 5.55; 1 percent NaOCl + 17 percent EDTA: 12.47 ± 6.92; 1 percent NaOCl + RCPrep: 7.82 ± 1.91). The SEM analysis showed the best results for 1 percent NaOCl + 17 percent EDTA on smear layer removal. It may be concluded that the combination of Profile .04 rotary instrumentation and the tested solutions was not able to totally remove debris and smear layer from flattened root canals.


O objetivo deste estudo foi avaliar a capacidade de limpeza dos instrumentos Profile .04 associados a diferentes soluções irrigantes, em canais radiculares achatados, por meio de análises histológica, morfométrica e MEV. Oitenta incisivos inferiores humanos foram submetidos ao preparo biomecânico com instrumentos Profile .04 e aleatoriamente distribuídos em 4 grupos de acordo com as soluções irrigantes usadas (n=20): G1 - água destilada (controle); G2 - NaOCl 1 por cento; G3 - NaOCl 1 por cento alternado com EDTA 17 por cento e G4 - NaOCl 1 por cento com RCPrep creme. Dez dentes de cada grupo foram avaliados em microscopia óptica para determinação da porcentagem de debris do canal radicular. Os demais dentes foram avaliados em microscopia eletrônica de varredura. A análise estatística mostrou diferença significante (p<0,001) entre os grupos ao considerar a porcentagem de debris remanescente nos canais (água destilada: 18,82 ± 5,55; NaOCl: 6,29 ± 5,55; NaOCl + EDTA: 12,47 ± 6,92; NaOCl + RCPrep: 7,82 ± 1,91). A análise em MEV evidenciou melhores resultados na remoção da camada de smear com o NaOCl 1 por cento alternado com EDTA 17 por cento. Pode-se concluir que a associação entre a instrumentação rotatória com Profile .04 e as soluções testadas não foi capaz de remover totalmente debris e camada de smear de canais radiculares achatados.


Subject(s)
Humans , Dental Instruments , Dental Pulp Cavity/anatomy & histology , Root Canal Irrigants/chemistry , Root Canal Preparation/methods , Smear Layer , Dental Pulp Cavity/drug effects , Dental Pulp Cavity/surgery , Edetic Acid/chemistry , Edetic Acid/therapeutic use , Incisor , Mandible , Nickel , Root Canal Irrigants/therapeutic use , Root Canal Preparation/instrumentation , Sodium Hypochlorite/chemistry , Sodium Hypochlorite/therapeutic use , Titanium
18.
Rev. bras. odontol ; 65(2): 174-176, jul.-dez. 2008. ilus
Article in Portuguese | LILACS, BBO | ID: lil-541822

ABSTRACT

Paciente do sexo masculino, leucoderma, 12 anos de idade, apresentou-se à Clínica do Projeto Trauma da faculdade de Odontologia da Universidade do Estácio de Sá, no Rio de Janeiro, relatando a fratura de uma agulha de aço inoxidável no conduto radicular do elemento dentário 11, o qual estava sendo submetido a tratamento endodôntico. Após obter dados da anamnese, diagnóstico clínico e radiológico, foi elaborado um plano de tratamento adequado à particularidade de tal situação. Para remoção da agulha do interior do canal, foi realizada concomintantemente uma cirurgia perirradicular e o tratamento endodôntico. Em uma etapa posterior, foi executada a restauração coronária do elemento dentário, proporcionando também a recuperação estética do sorriso do paciente.


Subject(s)
Humans , Male , Adolescent , Accidents, Home , Dental Pulp Cavity/surgery , Needles , Patient Compliance , Incisor
19.
Dental Journal-Shahid Beheshti University of Medical Sciences. 2008; 26 (1): 60-63
in Persian | IMEMR | ID: emr-86127

ABSTRACT

The knowledge about the anatomic variation pulp cavity, specially in multi-rooted teeth, is an important factor for diagnosis and successful endodontic treatment. Root canal treatment of 4-rooted maxillary second molars has been described in only a limited number of case reports. The purpose of this case report was to illustrate and describe the endodontic treatment of a 4-rooted maxillary second molar. A 20-year-old female with no history of systemic disease was referred for treatment of her upper left second molar tooth. The diagnostic radiographies revealed root anomalies. After access cavity preparation, presence of four orifices in the pulp chamber was confirmed; each of them related to a distinct root. Root canal therapy was performed completely in all four roots. This case report indicates that the clinicians must be aware of anatomic variations during the diagnostic and treatment phases of maxillary molars, and proper root canal treatment should be performed respecting the presence of challenges in pulp space anatomy


Subject(s)
Humans , Female , Tooth Root/surgery , Dental Pulp Cavity/abnormalities , Dental Pulp Cavity/surgery , Molar/abnormalities , Molar/surgery , Radiography/statistics & numerical data , Root Canal Therapy/statistics & numerical data
20.
JBE j. bras. endodontia ; 6(24): 67-69, abr.-jun. 2006. ilus
Article in Portuguese | LILACS, BBO | ID: lil-437389

ABSTRACT

Um dos principais fatores que influenciam no tratamento endodôntico é o conhecimento preciso da morfologia do canal radicular por parte do cirurgião-dentista. A capacidade de identificar possíveis variações como a presença de um canal adicional aumenta de forma significante o índice de sucesso. Este artigo apresenta um relato de um caso clínico de tratamento endodôntico de um canino esquerdo em que foi obsevada a presença de dois canais, fator este considerado atípico pela maioria dos autores


Subject(s)
Humans , Dental Pulp Cavity/surgery , Dental Pulp Cavity , Tooth Crown , Tooth Crown , Endodontics/methods , Tooth Apex , Tooth Apex
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