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1.
Rev. Odontol. Araçatuba (Impr.) ; 40(3): 9-13, set.-dez. 2019. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1102184

ABSTRACT

O traumatismo dentário acontece de maneira frequente, tendo maior prevalência em incisivos centrais, podendo ocorrer de várias formas, acometendo o tecido duro e o tecido de sustentação do dente. A severidade do trauma pode ocasionar um processo degenerativo ou uma lesão irreversível até a mortificação da polpa, por isso deve-se observar o estágio de desenvolvimento do dente para correta terapêutica diante de uma rizogênese completa ou incompleta. A necrose pulpar em um dente com ápice incompleto paralisa o seu processo de desenvolvimento o que torna necessário a realização da apicificação. O objetivo desse presente trabalho é relatar um caso clínico de traumatismo em um dente com rizogênese incompleta e a conduta terapêutica instituída para promover a apicificação do mesmo. Entretanto, Durante o tratamento foi um grande desafio promover o fechamento do ápice que fora paralisado após o trauma. Portanto, foi preciso realizar várias sessões de medicação intracanal com hidróxido de cálcio que é o material mais indicado para induzir a formação de barreira calcificada para fechamento completo do ápice(AU)


The dental trauma occurs frequently, having a higher prevalence in central incisors, and can occur in several ways, affecting the hard tissue and the tooth support tissue. The severity of the trauma can cause a degenerative process or an irreversible lesion until the mortification of the pulp, so the stage of development of the tooth must be observed for correct therapy in the presence of complete or incomplete rhizogenesis. Pulp necrosis in a tooth with an incomplete apex paralyzes its development process, which makes it necessary to perform the inoculation. The objective of this present work is to report a clinical case of trauma in a tooth with incomplete rhizogenesis and the therapeutic conduct instituted to promote the apicification of the same. However, during the treatment it was a great challenge to promote the closure of the apex that had been paralyzed after the trauma. Therefore, it was necessary to perform several intracanal medication sessions with calcium hydroxide, which is the most suitable material to induce the formation of a calcified barrier for complete closure of the apex(AU)


Subject(s)
Humans , Male , Adolescent , Tooth Injuries , Dental Pulp Necrosis , Tooth Apex/surgery
2.
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
3.
Braz. dent. j ; 26(5): 552-556, Oct. 2015. graf
Article in English | LILACS | ID: lil-767621

ABSTRACT

Abstract: Treatment of non-vital immature teeth with apical periodontitis has always been a challenge in Endodontics. Regenerative endodontic treatment (RET) has been successfully used for the management of these cases. The aim of this study is to present a case of RET used for the retreatment of a previously endodontically treated permanent tooth with an open apex. A 14-year-old boy with a poor endodontic treatment done on his maxillary right central incisor developed symptomatic apical periodontitis. Radiographically, incomplete root development with thin dentinal walls and an open apex were evident. After accessing and removing previous filling materials, the canal was copiously irrigated with 2.5% sodium hypochlorite. A triple antibiotic paste was placed inside the canal and left for 15 days. After removal of the antibiotic mixture, bleeding was induced into the canal by passing a hand file out of the apex. A collagen membrane barrier was placed over the blood clot, followed by sealing with mineral trioxide aggregate. Access was sealed with permanent filling materials. Clinical examination at 12, 24 and 36 months revealed no symptoms. Radiographic examination showed resolution of the periapical lesion and apical closure. Sensitivity tests with cold and an electric pulp test elicited a negative response at all recall periods. On the basis of long-term results, RET may be an effective option for the retreatment of an immature permanent tooth with a failed previous treatment and periapical periodontitis.


Subject(s)
Humans , Adolescent , Adult , Root Canal Therapy , Tooth Apex/surgery , Aluminum Compounds/administration & dosage , Anti-Bacterial Agents/administration & dosage , Calcium Compounds/administration & dosage , Drug Combinations , Oxides/administration & dosage , Root Canal Filling Materials , Silicates/administration & dosage
4.
Article in English | IMSEAR | ID: sea-158247

ABSTRACT

Aims: To compare the apical extrusion of Enterococcus faecalis after instrumentation with three different Ni-Ti rotary instruments- An in vitro study. Settings and Design: In vitro study Methods and Material: Forty freshly extracted mandibular premolars were mounted in bacteria collection apparatus and root canals were contaminated with a suspension of Enterococcus faecalis. The contaminated teeth were divided into 4 groups of 10 teeth each according to rotary system used for instrumentation: Group1: Hyflex files, Group 2: GTX files, Group 3: Protaper files and Group 4: control group (no instrumentation). Bacteria extruded after preparations were collected into vials and microbiological samples were incubated in BHI broth for 24 hrs. The colony forming units were determined for each sample. Statistical Analysis Used: Statistical analysis was done using one way ANOVA followed by post hoc independent “t” test. Results: GTX files extruded least amount of bacteria followed by Hyflex files. Maximum extrusion of E. faecalis was seen in rotary Protaper group. Conclusion: Least amount of extrusion was seen with GTX files followed by Hyflex files and then rotary Protaper system.


Subject(s)
Bicuspid , Dental Pulp Cavity/microbiology , Enterococcus faecalis/isolation & purification , Humans , Root Canal Preparation/instrumentation , Root Canal Preparation/methods , Root Canal Therapy/instrumentation , Root Canal Therapy/methods , Tooth Apex/microbiology , Tooth Apex/surgery
5.
Full dent. sci ; 5(20): 653-657, jul.-set. 2014. tab, graf
Article in Portuguese | LILACS, BBO | ID: lil-737458

ABSTRACT

Este artigo objetivou comparar, radiograficamente, a confiabilidade do Novapex® e do Propex II® no procedimento de Odontometria. O comprimento de trabalho de 30 elementos dentários foi determinado pela técnica radiográfica e pela localização foraminal eletrônica. Uma lima tipo K #15 foi introduzida em cada canal radicular, após preparo cervical, e quando da indicação do ápice dentário no painel de cada um dos aparelhos foi feita uma tomada radiográfica. A análise das imagens foi feita com o programa ImageTool3.00, a fim de serem comparados, entre os dispositivos, os comprimentos obtidos desde o final da lima ao ligamento periodontal. A análise dos dados se deu com o programa Statistica v.8.0. O teste de Wilcoxon revelou valores de p=0,305 e p= 0,823 quanto às medidas feitas nos diferentes intervalos de tempo entre o Novapex® e o Propex II®, respectivamente. A confiabilidade na detecção do forame apical foi de 76,6% para o Novapex e 70% para o Propex II, com tolerância de ± 0,5 mm. Contudo, quando comparados ao teste de Wilcoxon, não se observou diferença (p=0,687). A correlação entre os métodos, pelo teste de Spearman, indicou valor de p=0,091 e r=0,33. Os localizadores apicais se mostraram confiáveis ao que se destinam, sem diferenças estatisticamente significativas quando comparadas as performances de ambos na Odontometria.


This article aimed to compare the reliability of Novapex and Propex II in the Odontometry procedure by analyzing radiographs. The working length of 30 teeth was determined by the radiographic technique and by the electronic foramen localization. A K-type file #15 was introduced in each canal, and after cervical preparation, when the apex localization was indicated in the device's panel, an x-ray was made. The analysis of the images was performed with the program ImageTool 3.00, in order to compare the devices regarding the lengths obtained since the end of the file and the periodontal ligament. The data analysis was done with the program Statistica v.8.0. The Wilcoxon test revealed values of p=0.305 and p= 0.823 on the measures taken at different time intervals between the Novapex and the Propex II, respectively. The reliability in locating the apical foramen was 76.6% to the Novapex and 70% to the Propex II, with tolerance of ± 0.5 mm. However, when compared by Wilcoxon test there was no difference (p=0.687). The correlation between methods, by Spearman's test, indicated value of p=0.091 and r=0.33. Apex locators proved to be efficient without significant statistical difference when their performances in the Odontometry were compared.


Subject(s)
Humans , Tooth Apex/surgery , Dental Equipment , Odontometry/methods , Radiography, Dental/instrumentation , Endodontics , Statistics, Nonparametric
6.
Article in English | IMSEAR | ID: sea-154648

ABSTRACT

Background: Image superimposition is a part and parcel of two‑dimensional radiography. However, some overlappings are a result of radiographic technique itself. The technique induced superimposition of zygomatic buttress on apices of maxillary molars is common in bisecting angle technique (BAT), which affects the endodontic performance. Certain alterations were carried out in BAT to remove these undiagnostic shadows. The aim of this study was to compare two techniques of periapical radiography namely, BAT and modified BAT (MBAT) in preventing zygomatic superimposition over apices of maxillary molars. Materials and Methods: A total of 62 patients requiring endodontic treatment for at least one maxillary molar were recruited in this cross‑sectional study. One tooth from every patient was subjected for two periapical radiographs, one with each BAT and MBAT respectively giving a total of 124 radiographs. Each radiograph was recorded as acceptable or unacceptable, based on zygomatic superimposition and different technical aspects. Chi‑square test was used for data analysis. The kappa statistic was used to test intra‑observer reliability. Results: With MBAT, the acceptability was 82.3% (n = 51) compared with 43.5% (n = 27) when BAT was employed. The statistically significant difference was found between these two techniques (P = 0.000). The level of agreement between two oral radiologists in their interpretation was high (kappa index = 0.897). Conclusion: Modified BAT was more accurate for periapical radiography of maxillary molars in preventing zygomatic superimposition and related technical errors than BAT.


Subject(s)
Humans , Maxilla , Molar/surgery , Tooth Apex/surgery , Zygoma/abnormalities , Zygoma/surgery
7.
Article in English | IMSEAR | ID: sea-154645

ABSTRACT

Aim: Endodontic management of open apex using Biodentine as an apical matrix. Summary: An immature tooth with pulpal necrosis and periapical pathology imposes a great difficulty to the endodontist. Endodontic treatment options for such teeth consist of conventional apexification procedure with and without apical barriers. Biodentine™ is new calcium silicate based cement that exhibits physical and chemical properties similar to those described for certain Portland cement derivatives. This article demonstrates the use of the newer material, Biodentine as an apical matrix barrier in root end apexification procedure. This case reports present apexification and successful healing with the use of Biodentine as an apical barrier matrix. Conclusion: Apexification in one step using an apical plug of Biodentine can be considered a predictable treatment and may be an alternative to mineral trioxide aggregate apexification.


Subject(s)
Apexification/methods , Biocompatible Materials/therapeutic use , Endodontics/therapy , Tooth Apex/drug effects , Tooth Apex/surgery , Wound Healing
8.
Full dent. sci ; 3(11): 352-355, abr.-jun. 2012. tab
Article in Portuguese | LILACS, BBO | ID: lil-681666

ABSTRACT

O objetivo é avaliar in vitro a eficiência de três localizadores apicais eletrônicos, Bingo 1020, RomiApex A-15, Root ZX II. Para este experimento foram selecionados 30 molares superiores do Banco de Dentes Humanos da Universidade Estadual do Sudoeste da Bahia (BDH-UESB). Após o acesso endodôntico, obteve-se o comprimento através de visualização direta por inserção da Lima K # 10 21 mm até a observação da saída foraminal. Em seguida, as unidades dentárias foram inseridas em esponja vegetal embebida em soro fisiológico, realizando-se assim, a leitura com os localizadores foraminais eletrônicos com o auxílio de uma lima, cujo calibre melhor se ajustasse às paredes do canal radicular. As análises estatísticas foram realizadas pelo programa SPSS 13.0 (SPSS Inc., Chicago, Illinois, EUA), sendo os valores do comprimento dos canais radiculares submetidos à análise de variância (ANOVA) para determinar possíveis diferenças estatísticas entre os grupos e, posteriormente, ao teste de Tukey. Quanto aos resultados, não houve diferença estatisticamente significante entre os grupos (P>0.05). Os três aparelhos utilizados demonstraram- -se eficientes na determinação do comprimento de trabalho e não houve diferença estatística entre eles


The objective is evaluate in vitro the efficiency of three electronic apex locators, 1020 Bingo, RomiApex A-15, Root ZX II. For this experiment, thirty molar teeth from the Human Teeth Bank of the Southwest State University of Bahia (BDH-UESB) were selected. After endodontic access, the working length was assessed by insertion and direct visualization of the tip of a # 10, 21 mm K file at the foramen. The specimens were then inserted into vegetable sponge soaked in saline solution in order to allow the reading with foraminal electronic locators with the help of a file whose size best suits the root canal walls. Statistical analysis was performed using SPSS 13.0 (SPSS Inc., Chicago, Illinois, USA), the values of the length of root canals subjected to analysis of variance (ANOVA) to determine possible statistical differences between groups, and then to Tukey’s post test. No statistically significant differences were found between groups (P> 0.05). The three instruments used were shown to be effective in determining the working length and there was no statistical difference between them


Subject(s)
Humans , Tooth Apex/surgery , Dental Pulp Cavity , Endodontics/methods , In Vitro Techniques , Molar , Odontometry , Radiography, Dental/methods , Radiography, Dental
9.
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
10.
Braz. dent. j ; 23(2): 167-171, Mar.-Apr. 2012. ilus
Article in English | LILACS | ID: lil-626306

ABSTRACT

Root-end resected teeth with persistent apical periodontitis are usually retreated surgically or a combination of non-surgical and surgical retreatment is employed. However, patients are sometimes unwilling to be subjected to a second surgical procedure. The apical barrier technique that is used for apical closure of immature teeth with necrotic pulps may be an alternative to non-surgically retreat a failed apicoectomy. Mineral trioxide aggregate (MTA) has become the material of choice in such cases because of its excellent biocompatibility, sealing ability and osseoinductive properties. This case report describes the non-surgical retreatment of a failed apicoectomy with no attempt at retrofilling of a maxillary central incisor. White MTA was used to induce apical closure of the wide resected apical area. Four-year follow-up examination revealed an asymptomatic, fully functional tooth with a satisfactory healing of the apical lesion. White MTA apical barrier may constitute a reliable and efficient technique to non-surgically retreat teeth with failed root-end resection. The predictability of such a treatment is of great benefit for the patient who is unwilling to be submitted to a second surgical procedure.


Dentes com periodontite persistente após apicectomia são comumente tratados cirurgicamente ou pela combinação de cirurgia e tratamento não-cirúrgico. Porém, alguns pacientes não aceitam se submeter a um segundo procedimento cirúrgico. A técnica da barreira apical, utilizada para fechamento apical de dentes com ápice aberto com necrose pulpar, pode ser uma alternativa não-cirúrgica para retratamento de casos de apicectomia mal sucedida. O agregado de trióxido mineral (MTA) tornou-se o material de escolha para estes casos devido a sua excelente biocompatibilidade, capacidade de selamento e propriedades osseoindutivas. O relato de caso aqui apresentado descreve o retratamento não-cirúrgico de uma apicectomia mal sucedida, sem retrobturação, de um incisivo central superior. Foi utilizado o MTA branco para induzir o fechamento apical da ampla área de ressecção radicular. O exame de acompanhamento quatro anos após o tratamento mostrou um dente assintomático e totalmente funcional com reparo satisfatório da lesão apical. A barreira apical com MTA branco pode ser uma técnica segura e eficaz para o retratamento não-cirúrgico de dentes com apicectomia mal sucedida. A previsibilidade de tal tratamento é um grande benefício para o paciente que não deseja ser submetido a um novo procedimento cirúrgico.


Subject(s)
Adult , Humans , Male , Aluminum Compounds , Apicoectomy , Apexification/methods , Calcium Compounds , Dental Fistula/therapy , Oxides , Periapical Periodontitis/therapy , Root Canal Filling Materials , Silicates , Tooth Apex/surgery , Drug Combinations , Incisor/surgery , Retreatment , Treatment Failure
11.
Full dent. sci ; 2(5): 48-52, 20100815.
Article in Portuguese | LILACS, BBO | ID: biblio-850811

ABSTRACT

A complexidade anatômica das raízes dentárias dificulta a realização de um adequado preparo biomecânico, especialmente em canais radiculares com achatamento no sentido mésiodistal. O objetivo deste trabalho foi avaliar, in vitro, a eficácia do uso do ultrassom de forma passiva na irrigação final de canais radiculares achatados na remoção de corante aderido às paredes dentinárias. Vinte dentes incisivos centrais inferiores foram abordados e os canais preenchidos com tinta acrílica vermelha. Todos os espécimes foram preparados utilizando os sistemas de instrumentação rotatória Hero 642 e Protaper até um preparo apical de diâmetro 40, 1 mm aquém do ápice. A amostra foi dividida em dois grupos: Grupo A – irrigação final de hipoclorito de sódio 2,5% apenas com o uso de seringa e Grupo B – irrigação final com hipoclorito de sódio a 2,5% dispensados pela seringa e ativados pelo ultrassom de forma passiva durante 1 minuto. Os elementos dentários foram avaliados com auxílio de um microscópio óptico para determinar a porcentagem de área do canal radicular que ficou limpa e a porcentagem que permaneceu com o corante. A média percentual das áreas limpas do Grupo A foi de 87,93% e do Grupo B de 92,58%. Não houve diferença estatisticamente significativa entre os dois grupos. Concluiu-se neste trabalho que ambas as técnicas de irrigação avaliadas não foram eficazes na remoção completa do corante do interior dos canais radiculares achatados e que o uso do ultrassom de forma passiva durante a irrigação final não resultou em maior remoção do corante aderido às paredes dos canais radiculares


Root canal complex anatomy makes it difficult to perform the appropriate cleaning and shaping, especially in flattened root canals. The purpose of this study was evaluating the cleaning capacity of passive ultrasound irrigation in oval canals. Twenty oval-shaped single-rooted mandibular incisors were accessed and filled with acrylic red dye. All the specimens were prepared using two systems of Ni-Ti Rotary instruments: Hero 642 and Protaper, until an apical size 40, 1 mm from the apex. The sample were divided in two groups: Group A – final irrigation with 2,5% NaOCl delivered by syringe and Group B – final irrigation with 2,5% NaOCl delivered by syringe and activated by ultrasound for 1 minute. The teeth were evaluated with an optic microscope to determine the percentage of root canal areas that were clean and the percentage that remained colored. The mean percentage of clean areas in Group A was 87,93% and in Group B was 92,58%. No statistically significant difference was found between the groups. It was concluded that passive ultrasonic irrigation did not enhance the ability to remove the dye from the canal walls


Subject(s)
Humans , Tooth Apex/surgery , Biomechanical Phenomena , Dental Materials , Root Canal Preparation/methods , Ultrasonics/instrumentation , Analysis of Variance , In Vitro Techniques , Statistics, Nonparametric
12.
Damascus University Journal for Health Sciences. 2009; 25 (1): 339-355
in Arabic | IMEMR | ID: emr-111316

ABSTRACT

Laser is one of the new biotechniques which may open a new world wide dentistry. Low level laser therapy or soft laser intensity possesses an eminently analgesic and biostimulant effect, by producting endorfin alpha and beta and increasing the local microcirculation. Although apicectomy at 20th century have opened the door for new dentistry by increasing the treatment possibilities and improved the functional and esthetics results for patients. Material and The aim of our research is to evaluate the influence of GaAlAs laser therapy on pain and swelling which occur after apicectomy compared with drug therapy. The sample consisted of 36 Clinic patients and divided in 3 groups: GI-The apicectomy surgically was done without laser application, but with analgesic and anti inflammatory. GII-The apicectomy was done with laser therapy sessions in the postoperative immedite, of 24 hs and of 72 hs, but without analgesic and anti inflammatory. GIII-The apicectomy surgicaly and laser therapy sessions in the preoperative and immedite, of 24 hs and of 72 hs, but without analgesic and anti inflammatory. The laser equipment was of Semi conductor Ga Al As 904 nm and power 1.5 j/cm2. The statistical study of the pain and swelling effect by Giles index of pain and Rosane index of swelling, by sample t [test] with significance degree at level 5%. Showed that soft laser for analgesic and anti swelling if we use it pre and post operated within 24 hs and this result agrees with many studies which confirm the soft laser analgesic and anti inflammatory effect. We can use soft laser as a drug alternative therapy for patients who can not use drugs or can be usefull in big operations


Subject(s)
Humans , Male , Female , Pain , Tooth Apex/surgery , Drug Therapy , Lasers, Semiconductor , Treatment Outcome
13.
Journal of Dentistry-Shiraz University of Medical Sciences. 2009; 10 (3): 167-174
in Persian | IMEMR | ID: emr-101292

ABSTRACT

The extracted human teeth are commonly used in endodontic research and preclinical education. The center for Disease Control [CDC] recommends sterilizing the extracted teeth by storing in 10% formalin for 2 weeks or autoclaving. The purpose of this study was to determine the potential effect of storage in formalin or autoclaving of the extracted human teeth on the apical seal entegrity of the obturated canals. A total of 83 extracted single-rooted teeth, free of visible fracture, caries of large restoration or rott canal treatment were collected, and temporarily stored in normal saline for no longer than 48 hours before categorizing them in experimental and control groups. The teeth were divided into three experimental groups of 25 each, and placed in 10% formalin for 2 weeks or autoclaved or immediately prepared. Eight teeth served as positive and negative controls. Preparations for all the teeth consisted of decoration, canal instrumentation by protaper system and obturation with lateral compaction technique. The teeth were immersed in India ink and cleared. Then the greatest extent of linear dye leakage was measured. Leakage measurements were evaluated fro significant differences using ANOVA with tukey's HSD Post Hoc analysis. There was less dye leakage in the teeth stored in formalin as compared to autoclaved and freshly extracted teeth. No statistical significant differences in apical microleakage between the three experimental groups were observed [p<0.05]. The results of this study revealed that storage of the extracted teeth for research and educational purpose in formalin or autoclaving had no effect on apical microleakage of the obturated teeth


Subject(s)
Humans , Disinfection/methods , Dental Leakage , Tooth Extraction , Tooth Apex/surgery
14.
Braz. dent. j ; 19(2): 124-129, 2008. ilus, tab
Article in English | LILACS | ID: lil-484953

ABSTRACT

The aim of this study was to evaluate the microbial distribution in the root canal system after periapical lesion induction in dogs' teeth using different methods. Fifty-two root canals were assigned to 4 groups (n=13). Groups I and II: root canals were exposed to the oral cavity for 180 days; groups III and IV: root canals were exposed for 7 days and then the coronal openings were sealed for 53 days. The root apices of groups I and III were perforated, while those of groups II and IV remained intact. After the experimental periods, the animals were euthanized and the anatomic pieces containing the roots were processed and stained with the Brown & Brenn method to assess the presence and distribution of microorganisms. The incidence of microorganisms at different sites of the roots and periapical lesions was analyzed statistically by the chi-square test at 5 percent significance level. All groups presented microorganisms in the entire root canal system. A larger number of microorganisms was observed on the root canal walls, apical delta and dentinal tubules (p<0.05), followed by cementum and cemental resorption areas. In spite of the different periods of exposure to the oral environment, the methods used for induction of periapical periodontitis yielded similar distribution of microorganisms in the root canal system.


O objetivo deste estudo foi avaliar a distribuição microbiana no sistema de canais radiculares após indução de lesões periapicais em dentes de cães por diferentes métodos. Cinqüenta e dois canais radiculares foram divididos em 4 grupos (n=13). Grupos I e II: canais radiculares foram expostos por 180 dias; grupos III e IV: canais radiculares foram expostos por 7 dias e então as aberturas coronárias foram seladas por 53 dias. Os ápices radiculares dos grupos I e III foram arrombados, enquanto os dos grupos II e IV foram mantidos intactos. Após os períodos experimentais, os animais foram mortos e as peças foram processadas e coradas pelo método de Brown e Brenn para avaliação da presença ou ausência e distribuição dos microrganismos. A incidência de microrganismos nas diferentes regiões das raízes e lesões periapicais foi analisada estatisticamente pelo Teste Qui-Quadrado em nível de 5 por cento de significância. Todos os grupos apresentaram microrganismos em todo o sistema de canais radiculares. Um maior número de microrganismos foi observado nas paredes do canal radicular, delta apical e túbulos dentinários, seguido pelo cemento e áreas de reabsorção cementária. Apesar de utilizar diferentes períodos de exposição dos canais radiculares ao meio bucal, os métodos usados para indução das lesões periapicais permitiram semelhante distribuição de microrganismos no sistema de canais radiculares (p>0,05).


Subject(s)
Animals , Dogs , Bacteria/growth & development , Dental Pulp Cavity/microbiology , Periapical Periodontitis/microbiology , Coloring Agents , Dental Cementum/microbiology , Dental Cementum/ultrastructure , Dentin/microbiology , Dentin/ultrastructure , Mouth/microbiology , Pulpectomy , Root Canal Obturation , Root Canal Preparation/instrumentation , Root Canal Preparation/methods , Root Resorption/microbiology , Root Resorption/pathology , Time Factors , Tooth Apex/microbiology , Tooth Apex/surgery , Tooth Apex/ultrastructure
15.
Braz. dent. j ; 17(4): 296-299, 2006. ilus
Article in English | LILACS | ID: lil-442406

ABSTRACT

One problem in cases of healing-resistant periapical lesions is to eradicate the contamination at the periapical area. This contamination is due to the microbiological biofilm formed by microorganisms and their subproducts lodged in apical third of the root, on both cementum and dentin surface. Paraendodontic surgery consists of the mechanical removal of harmful agents to promote healing and periapical health. The purpose of this study was to assess the results of Er:YAG laser irradiation on the apical root third of newly extracted teeth to eliminate microbial contamination on root apex surface. Apical irradiation was performed with an Er:YAG laser device using an experimental contact tip, at 100 mJ, 10 Hz, 1 W, 39 J/cm², 3 times on the target area. SEM analysis showed the elimination of part of the irradiated cementum and the formation of small roughened without exposing the subjacent dentin. Vaporization of the remaining periodontal tissue and removal of microbiological apical biofilm (MAB) were also observed on the irradiated areas. Under the tested conditions and based on the findings of this study, Er:YAG laser may be considered effective for removal of microbiological apical biofilm.


A problemática dos casos envolvendo pacientes portadores de lesões periapicais resistentes é a eliminação da infecção que atinge a região periapical. Esta infecção é composta por microrganismos e seus subprodutos alojados no cemento e dentina do terço apical, sob forma de biofilme microbiano. A execução da cirurgia paraendodôntica com vistas à promoção da saúde do periápice, invariavelmente resume-se em remover mecanicamente os agentes causadores da doença, com objetivo de proporcionar a reparação. O propósito deste estudo foi avaliar o resultado da irradiação com laser de Er:YAG no terço apical de dentes recém extraídos com relação à infecção microbiana na superfície do ápice radicular. O laser Er:YAG foi empregado para irradiação de ápices radiculares, com ponteira experimental de contato (Chisel, Morita co.), utilizando energia de potência de 100 mJ, 10 Hz, por 3 vezes em área delimitada no terço apical das raízes. Os resultados do estudo em microscopia eletrônica de varredura mostraram a eliminação do tecido periodontal remanescente juntamente com quantidade significativa de microrganismos. Portanto, pode-se concluir que o laser de Er:YAG nas condições experimentais testadas mostrou-se efetivo na remoção de microrganismos do tecido periodontal contaminado e do cemento sem expor a dentina subjacente.


Subject(s)
Humans , Biofilms , Dental Cementum/microbiology , Laser Therapy , Tooth Apex/microbiology , Aluminum Silicates , Dental Cementum/surgery , Erbium , Microscopy, Electron, Scanning , Periapical Diseases/microbiology , Periapical Diseases/surgery , Tooth Apex/surgery , Yttrium
16.
Braz. dent. j ; 17(1): 6-9, 2006.
Article in English | LILACS | ID: lil-430124

ABSTRACT

O limite apical de trabalho sempre constituiu um tema de muita controvérsia. Apesar dos vários trabalhos que já foram publicados sobre o assunto, ainda não existe uma definição sobre ele. A recente discussão sobre patência apical e limpeza do forame e a incorporação desses procedimentos ao tratamento endodôntico parece ter gerado uma polêmica maior ainda. É possível que essa polêmica tenha a sua causa maior na ausência de interrelação do conhecimento que se tem sobre o coto pulpar e tecidos periapicais e a realidade dos fatos da clínica. Através de uma discussão sobre os principais aspectos desse tema, este artigo pretende apresentar uma nova concepção a respeito da importância da patência apical e limpeza do forame no preparo do canal.


Subject(s)
Humans , Root Canal Preparation/methods , Tooth Apex/surgery , Tooth Diseases/surgery , Root Canal Preparation/instrumentation , Tooth Apex/microbiology , Tooth Diseases/microbiology
17.
JBE j. bras. endodontia ; 4(15): 276-282, out.-dez. 2003. ilus
Article in Portuguese | LILACS, BBO | ID: lil-412490

ABSTRACT

De longa data, tem sido relatados satisfatórios resultados clínicos, radiografados e histológicos do hidróxido de cálcio P.A. sobre o tecido conjuntivo da polpa e do periápice. Neste relato de caso clínico, um paciente, como 9 anos de idade, apresentou-se com história de trauma que resultou na necrose pulpar e comitante interrupção da rizogênese do elemento dentário 11. Após desbridamento do canal radicular, aplicou-se uma pasta à base de hidróxido de cálcio e para-monoclorofenol canforado, Calen/PMCC. Mediante renovação periódica mensal da medicação intracanal, observou-se, clinica e radiograficamente, num período de 120 dias, o progressivo fechamento biológico da extensa abertura foraminal por tecido mineralizado, ou seja, a apicificação. Na obturação do canal radicular, utilizou-se a técnica dos cones rolados. Na atualidade, frente aos vários biomateriais disponiveis na Endodontia, o hidróxido de calcio permanece como um dos mais promissores frente a várias situações clínico-patológicas, a exemplo do tratamento endodôntico dos pacientes jovens com necrose pulpar e ápice incompletamente formados


Subject(s)
Humans , Child , Tooth Apex/anatomy & histology , Tooth Apex/surgery , Tooth Apex , Calcium Hydroxide , Dental Pulp Necrosis , Root Canal Therapy , Endodontics
18.
Rev. odonto ciênc ; 19(43): 57-62, jan.-mar. 2003. ilus
Article in Portuguese | LILACS, BBO | ID: lil-397016

ABSTRACT

A presente pesquisa teve como ojetivo geral avaliar radiograficamente a região perirradicular de dentes em pacientes que foram submetidos à intervenção cirúrgica paredodôntica na Clínica de Cirurgia I da UFPE, na Clínica Odontológica do Hospital Geral do Recife (HGeR) e numa Clínica Privada no período compreendido entre abril de 2000 e julho de 2001, com o propósito de correlacionar as imagens radiográficas do pré e pós-cirúrgico paredodôntico, avaliou-se criteriosamente: a estrutura óssea apical e lateral em torno da região radicular, lesões perirradiculares e corpos estranhos. Foram interpretadas 26 (vinte e seis) radiografias periapicais de dentes em pacientes humanos submetidos à intervenção cirúrgica paredodôntica. A interpretação foi feita com as películas radiográficas posicionadas sobre negatoscópio e visualizadas com lupas de aumento, sob a orientação de um radiologista para que erros de leitura fossem evitados


Subject(s)
Humans , Male , Female , Tooth Apex/surgery , Tooth Apex
19.
RGO (Porto Alegre) ; 50(3): 155-163, jul.-set. 2002. ilus, tab, graf
Article in Portuguese | LILACS, BBO | ID: lil-365784

ABSTRACT

Neste estudo avaliou-se o selamento marginal em obturações retrógradas com os cimentos de ionômero de vidro resisnoso (Fuji Ortho LC) e de resina expóxica com hidróxido de cálcio (Sealer 26). Foram selecionados trinta e nove caninos superiores permanentes de humanos, com raízes íntegras, retas e ápices completamente formados. Estes dentes foram preparados biomecanicamente, obturados e apicectomizados. Depois de impermeabilizados, procedeu-se a obturação retrógrada. As raízes foram divididas de maneira aleatória em 3 grupos de 13 unidades cada. Nestes foram empregados os seguintes materiais: grupo A: - Sealer 26, espatulado clinicamente; - grupo B: Sealer 26, proporcionado em 2,4g de pó para 0,68g de resina; - grupo C: Fuji Ortho LC, clinicamente proporcionando. Os dentes foram, então, imersos em solução de azul metileno à 2 por cento por 7 dias à 37°C. Posteriormente, com o seccionamento das raízes determinou-se a magnitude da infiltração com auxílio do porfilômetro. Os resultados mostraram que, entre os materiais utilizados, o cimento de ionômero de vidro Fuji Ortho LC foi o que apresentou, estatisticamente, a maior média de infiltração marginal. Não houve diferença entre grupos nos quais empregou-se o Sealer 26.


Subject(s)
Humans , Male , Female , Tooth Apex/surgery , Glass Ionomer Cements/therapeutic use , Epoxy Resins , Calcium Hydroxide/therapeutic use , Retrograde Obturation
20.
In. Marzola, Clóvis. Cirurgia pré-protética. Säo Paulo, Pancast, 3 ed; 2002. p.233-246, ilus. (BR).
Monography in Portuguese | LILACS, BBO | ID: lil-329347
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