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1.
Braz. oral res. (Online) ; 30(1): e25, 2016. tab, graf
Article in English | LILACS | ID: biblio-952016

ABSTRACT

Abstract The aim of this study was to evaluate the influence of diabetes mellituson tissue response and mineralization ability of Sealapex®and MTA Fillapex® sealers. Twenty-four Wistar rats were divided into two groups: diabetic and non-diabetic. The materials were placed in polyethylene tubes and implanted into dorsal connective tissue of rats for 7 and 30 days. Six animals from each group received injection of calcein, alizarin, and oxytetracycline on days 7, 14, and 21, respectively. The animals were killed after 7 and 30 days and specimens were prepared for histologic analysis by staining with hematoxylin and eosin or Von Kossa or left unstained for polarized light or fluorescence microscopy. On day 7, inflammatory reactions were characterized. Moderate inflammatory responses were observed for all groups and on day 30, a mild inflammatory response against MTA Fillapex® and a moderate inflammatory response against Sealapex® were observed. Von Kossa-positive structures were observed in response to both materials and birefringent structures were observed upon polarized light analysis; these had no relation to the diabetic condition (p > 0.05). The fluorescence intensity was unaffected in diabetic rats (p > 0.05). In conclusion, diabetes mellitus did not influence the tissue response or mineralization stimulated by Sealapex® or MTA Fillapex®.


Subject(s)
Animals , Male , Oxides/pharmacology , Calcium Hydroxide/pharmacology , Salicylates/pharmacology , Silicates/pharmacology , Calcium Compounds/pharmacology , Aluminum Compounds/pharmacology , Subcutaneous Tissue/drug effects , Diabetes Mellitus, Experimental/physiopathology , Time Factors , Biocompatible Materials/pharmacology , Materials Testing , Rats, Wistar , Subcutaneous Tissue/pathology , Drug Combinations , Inflammation/chemically induced , Inflammation/pathology , Microscopy, Fluorescence
2.
J. appl. oral sci ; 21(3): 235-242, May/Jun/2013. graf
Article in English | LILACS | ID: lil-679324

ABSTRACT

Some manufacturers have recently added specific components to improve the ease of handling and insertion material properties of MTA in order to create MTA-based sealers. Objective The aim of this study was to evaluate the healing of periapical lesions in canine teeth after a single session of endodontic treatment with MTA Fillapex® compared with Sealapex® or Endo-CPM-Sealer®. Material and Methods Sixty-two root canals were performed on two 1-year-old male dogs. After coronal access and pulp extirpation, the canals were exposed to the oral cavity for 6 months in order to induce periapical lesions. The root canals were prepared, irrigated with a solution of 2.5% sodium hypochlorite and filled with gutta-percha and different sealers, according to the following groups: 1) Sealapex®; 2) Endo-CPM-Sealer®; and 3) MTA Fillapex®. Some teeth with periapical lesions were left untreated for use as positive controls. Healthy teeth were used as negative controls. After 6 months, the animals were sacrificed and serial sections from the roots were prepared for histomorphologic analysis and stained with hematoxylin and eosin and the Brown and Brenn technique. The lesions were scored according to pre-established histomorphologic parameters and the scores statistically analyzed using the Kruskal-Wallis test. Results All 3 materials produced similar patterns of healing (p>0.05); in particular, persistent inflammation and absence of complete periapical tissue healing were consistently noted. Conclusions Preparation of the infected root canals followed by filling with the materials studied was insufficient to provide complete healing of the periapical tissues. .


Subject(s)
Animals , Dogs , Male , Aluminum Compounds/therapeutic use , Calcium Compounds/therapeutic use , Calcium Hydroxide/therapeutic use , Oxides/therapeutic use , Periapical Tissue/drug effects , Root Canal Filling Materials/therapeutic use , Root Canal Preparation/methods , Salicylates/therapeutic use , Silicates/therapeutic use , Wound Healing/drug effects , Anti-Infective Agents/therapeutic use , Drug Combinations , Dental Pulp Cavity/drug effects , Dental Pulp Cavity/microbiology , Materials Testing , Periapical Tissue/injuries , Periapical Tissue/pathology , Reproducibility of Results , Root Canal Irrigants/therapeutic use , Time Factors
3.
Dent. press endod ; 3(1): 78-83, 2013. ilus
Article in Portuguese | LILACS, BBO | ID: lil-688938

ABSTRACT

Introdução: paciente do sexo masculino, 37 anos de idade. Após a anamnese, foi constatado que o dente 11 apresentava abertura coronária e presença de hidróxido de cálcio com histórico de trauma dentário nesse dente. Radiograficamente, o dente 11 apresentava formação radicular incompleta, paredes dentinárias finas e frágeis, com divergência foraminal associada a imagem radiolúcida periapical. Objetivo: relatar um caso clínico de apicificação, realizado com trocas de curativo de hidróxido de cálcio. Métodos: o tratamento de escolha foi a apicificação, a qual teve início na segunda sessão, após 15 dias, por meio de desbridamento químico-mecânico de todo o canal radicular, com limas tipo K e irrigação com uma solução de hipoclorito de sódio a 2,5%. Em seguida, pasta de hidróxido de cálcio (hidróxido de cálcio, iodofórmio e propilenoglicol) foi aplicada e trocada de 15 em 15 dias, durante 4 meses. O exame radiográfico foi novamente realizado e demonstrou o fechamento completo da abertura foraminal e regressão da radiolucência periapical. O canal radicular foi obturado utilizando-se um cone confeccionado a partir da união de três cones #60 e pela técnica de condensação lateral com Sealapex. Resultados: seis meses após a obturação, exames revelaram teci-dos periapicais normais e ausência de sintomas. Conclusão: concluiu-se que o tratamento do traumatismo dentário associado à necrose do tecido pulpar e à lesão periapical, com trocas sucessivas de pasta de hidróxido de cálcio, foi adequado para se obter a regressão da lesão periapical, formação de barreira mineralizada e promoção de saúde ao paciente.


Subject(s)
Humans , Male , Adult , Apexification , Apicoectomy , Dental Pulp Necrosis , Calcium Hydroxide/therapeutic use , Root Canal Obturation , Root Canal Therapy , Tooth Injuries , Periapical Tissue/injuries
4.
J. appl. oral sci ; 20(3): 347-351, May-June 2012. ilus, tab
Article in English | LILACS | ID: lil-643732

ABSTRACT

OBJECTIVES: The aim of this study was to evaluate the apical sealability of Fillapex®, endo-CPM-Sealer® and Sealapex®. Material and Methods: Ninety-four freshly extracted single-rooted teeth were selected and decoronated. All teeth were radiographed to confirm the existence of a single and straight root canal, which was prepared using Protaper Universal and 2.5% sodium hypochlorite. The teeth were randomly divided in groups of 10 specimens each according to the sealer, and the canals were filled using the single cone technique and one of the sealers. Four additional teeth were used as controls. The teeth were submitted to dye leakage with Rhodamine B for 24 h but using vacuum on the initial 15 min. Thereafter, they were cut longitudinally and the leakage was measured in a linear fashion from apex to crown. Data were analyzed by ANOVA and Tukey's tests at 5% significance level. Results: Fillapex® and Sealapex® showed significantly less dye leakage than endo-CPM-Sealer® (p<0.05). Conclusions: It was concluded that Fillapex® and Sealapex® were able to prevent apical dye leakage differently from endo-CPM-Sealer®.


Subject(s)
Humans , Aluminum Compounds/chemistry , Calcium Compounds/chemistry , Calcium Hydroxide/chemistry , Dental Leakage/prevention & control , Oxides/chemistry , Root Canal Filling Materials/chemistry , Silicates/chemistry , Analysis of Variance , Drug Combinations , Materials Testing , Root Canal Obturation/methods , Salicylates/chemistry , Time Factors , Tooth Apex/chemistry , Tooth Apex/drug effects
5.
Araçatuba; s.n; 2012. 100 p. tab, ilus.
Thesis in Portuguese | LILACS, BBO | ID: lil-711309

ABSTRACT

O objetivo deste estudo foi avaliar a resposta tecidual frente ao implante de tubos de polietileno preenchidos pelos cimentos Sealapex®, Endo-CPM-Sealer® e MTA Fillapex® em tecido subcutâneo de ratos, bem como avaliar o processo de reparo de dentes de cães com lesão periapical, obtida experimentalmente, obturados com os mesmos cimentos. Para o teste de biocompatibilidade foram utilizados 30 ratos, os quais receberam individualmente três implantes de tubos de polietileno contendo os cimentos a serem testados e mais um tubo vazio como controle. Os períodos de avaliação foram de 7, 15, 30, 60 e 90 dias. Os espécimes foram processados laboratorialmente e analisados nas colorações de Hematoxilina e Eosina, Von Kossa e sem coloração para análise sob luz polarizada. Foram atribuídos escores e os dados obtidos foram analisados pelo teste Kruskal Wallis. Todos os materiais causaram reações moderadas no tempo experimental de 7 dias. A resposta foi moderada e similar para o grupo controle no 15° dia com Sealapex® e Endo-CPM-Sealer®. O grupo MTA Fillapex® apresentou reações leves a partir do 15° dia. Mineralizações e granulações brirrefringentes à luz polarizada foram observadas com todos os materiais. Foi possível concluir que todos os materiais testados apresentaram resultados similares, sendo considerados biocompatíveis e estimulantes de mineralização. Para a avaliação do processo de reparo de dentes de cães com lesão periapical, obtida experimentalmente, foram empregados 62 canais radiculares de 2 cães machos da raça Beagle. Os animais foram anestesiados, as polpas foram extirpadas e os canais ficaram expostos ao meio oral para o desenvolvimento de lesões periapicais. Após 6 meses os dentes foram tratados endodonticamente e foram divididos em 5 grupos experimentais, de acordo com o material obturador: Grupo I – Sealapex®; Grupo II – Endo-CPM-Sealer®; Grupo III – MTA Fillapex®; Grupo IV – Controle Positivo; Grupo V – Controle Negativo. Após 180 dias os animais foram...


The aim of this study was to evaluate the tissue response to implanted polyethylene tubes filled with Sealapex®, Endo-CPM-Sealer® and MTA Fillapex® in rat subcutaneous tissue, and to evaluate the healing process of dogs’ teeth with experimental periapical lesions filled with the same sealers. For the biocompatibility test, it were used thirty rats, which received three individual implants of polyethylene tubes containing the sealers to be tested and an empty tube as control. Evaluations periods were on 7, 15, 30, 60 and 90 days. The specimens were laboratory processed and analyzed in Hematoxylin and Eosin, Von Kossa and without staining for polarized light. Scores were assigned and data were analyzed by Kruskal Wallis test. Both materials caused mild to moderate reactions on 7 days. The response was moderate and similar to the control at the 15th day with Sealapex® and Endo-CPM-Sealer®. MTA Fillapex® evoked mild reactions from the 15th day on. Mineralization and granulations birefringent to the polarized light were observed with all materials. It was possible to conclude that all materials tested showed similar results and they are considered biocompatible and stimulating mineralization. For the evaluation of the healing process of dogs’ teeth with periapical lesions, sixty-two roots canals of two male beagle dogs were used. The animals were anesthetized, pulpectomy were performed and the canals remained open and exposed to the oral environment to induce a periapical lesion. After 6 months the teeth were endodontically treated and divided into 5 experimental groups, according to the filling material: Group I Sealapex®; Group II – Endo-CPM-Sealer®; Group III – MTA Fillapex®; Group IV – positive control; Group V – negative control. After 180 days, the animals were killed, the specimens were removed and laboratorially processed and analyzed in Hematoxylin and Eosin and the Brown and Brenn technique. The data were submitted to statistical analysis by Kruskal-Wallis…


Subject(s)
Animals , Rats , Biocompatible Materials , Dental Cements , Endodontics , Materials Testing
6.
Dent. press endod ; 2(2): 20-24, 2012. ilus
Article in Portuguese | LILACS, BBO | ID: lil-686399

ABSTRACT

Objetivo: o objetivo desse estudo foi investigar os efeitos da nova formulação do Cimento Portland (CPM) comparando-o ao MTA Angelus na viabilidade celular e liberação de IL-1b e IL-6 em fibroblastos de rato. Métodos:tubos de polietileno preenchidos com os materiais estudados foram colocados em placas de cultura celular de 24 poços com fibroblastos de rato. Tubos vazios foram utilizados como controle. Após 24 horas, ensaio MTT foi utilizado para avaliar a viabilidade celular.Para o ensaio de citocinas, fibroblastos de ratos foram incubados em placas de fundo plano de 24 poços com discos dos materiais no fundo, ou sem material, como controle. Após 24 horas, o meio de cultura foi coletado para a avaliação das citocinas pelo ELISA. Resultados:o CPM e MTA Angelus não inibiram a viabilidade celular.Ambos os materiais induziram liberação de IL-6 eIL-1b e a quantidade foi estatisticamente significativa se comparada ao grupo controle. Conclusão: ambos os materiais não foram citotóxicos em cultura de fibroblastos e induziram a liberação de IL-6 e IL-1b.


Subject(s)
Animals , Rats , Analysis of Variance , Culture Media , Cytokines , Cytotoxins , Dental Cements , Dental Materials , Materials Testing
7.
Dent. press endod ; 2(2): 47-52, 2012. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-686404

ABSTRACT

Introdução: o objetivo do estudo foi avaliar a resposta do tecido subcutâneo de ratos a implantes de tubos de polietileno com cimento Portland modificado (CPM) (EGEOS.R.L., Buenos Aires, Argentina) comparado com o MTA Angelus® (Angelus, Londrina/PR). Métodos: esses materiais foram colocados em tubos de polietileno e implantados no tecido conjuntivo dorsal de ratos Wistar por 7, 15, 30, 60 e 90 dias. Os espécimes foram preparados e corados com hematoxilina e eosina ou Von Kossa, ou não corados por luz polarizada. Foram realizadas avaliações quantitativas e qualitativas das reações. Resultados: ambos os materiais causaram reações moderadas em 7 dias, decaindo com o tempo. O MTA Angelus causou reações leves em 15 dias,decaindo com o tempo. A resposta foi similar ao controle em 30, 60 e 90 dias com CPM e MTA Angelus. Foram observadas mineralização e granulações birrefringentes à luz polarizada em ambos os materiais. Conclusões: foi possível concluir que o CPM e o MTA Angelus foram biocompatívei ,sem modelo de rato e estimularam a mineralização


Subject(s)
Animals , Rats , Dental Cements/pharmacology , Dental Cementum , Materials Testing , Dental Materials/analysis , Root Canal Filling Materials/therapeutic use , Connective Tissue
8.
J. appl. oral sci ; 19(4): 329-336, July-Aug. 2011. ilus, tab
Article in English | LILACS | ID: lil-599758

ABSTRACT

OBJECTIVE: The aim of this study was to investigate the effects of mineral trioxide aggregate (MTA), Sealapex, and a combination of Sealapex and MTA (Sealapex Plus) on the reaction of subcutaneous connective tissue of rats, and on cell viability and cytokine production in mouse fibroblasts. MATERIAL AND METHODS: The tissue reaction was carried out with dentin tubes containing the materials implanted in the dorsal connective tissue of rats. The histological analysis was performed after 7 and 30 days. Millipore culture plate inserts with polyethylene tubes filled with materials were placed into 24-well cell culture plates with mouse fibroblasts to evaluate the cell viability by MTT assay. ELISA assays were also performed after 24 h of exposure of the mouse fibroblasts to set material disks. RESULTS: Histopathologic examination showed Von Kossa-positive granules that were birefringent to polarized light for all the studied materials at the tube openings. No material inhibited the cell viability in the in vitro test. It was detected IL-6 production in all root-end filling materials. MTA and Sealapex Plus induced a slight raise of mean levels of IL-1β. CONCLUSIONS: The results suggest that Sealapex Plus is biocompatible and stimulates the mineralization of the tissue.


Subject(s)
Animals , Male , Rats , Aluminum Compounds/pharmacology , Calcium Compounds/pharmacology , Calcium Hydroxide/pharmacology , Connective Tissue/drug effects , Cytokines/drug effects , Fibroblasts/drug effects , Oxides/pharmacology , Root Canal Filling Materials/pharmacology , Salicylates/pharmacology , Silicates/pharmacology , Biocompatible Materials/pharmacology , Cells, Cultured , Cell Survival/drug effects , Drug Combinations , Dentin/drug effects , Enzyme-Linked Immunosorbent Assay , Materials Testing , Rats, Wistar , Time Factors
9.
Rev. Assoc. Paul. Cir. Dent ; 62(3): 198-202, maio-jun. 2008. ilus
Article in Portuguese | LILACS, BBO | ID: lil-539249

ABSTRACT

A anquilose alvéolo-dentária consiste na fusão anatômica do cemento dentário e/ou dentina com o osso alveolar, podendo acontecer em qualquer período da fase eruptiva, fazendo com que o elemento dentário permaneça em infra-oclusão. O diagnóstico é clínico e depende do exame periódico cuidadoso do paciente por parte do profissional. As opções de tratamento que têm sido sugeridas dependem de fatores clínicos como: a idade do paciente, o grau de infra-oclusão, a presença e localização do sucessor permanente, o estágio de desenvolvimento do sucessor e a severidade dos danos causados pela anomalia. Através do relato deste caso clínico de anquilose múltipla em dentes decíduos de uma criança de seis anos de idade, procurou-se ilustrar os diferentes estágios dessa anomalia e os tratamentos mais adequados. O tratamento eleito está baseado num planejamento adequado, por meio de exames clínicos e radiográficos seqüenciais, visando uma conduta eficaz, para que o desenvolvimento da oclusão e o restabelecimento da saúde bucal pudessem ocorrer normalmente.


The ankylosis alveolodental is the anatomical fusion the dental cemento or dentine with the alveolar bone, which may happen at any period of eruptive period, causing the infra-occlusion dental element. The diagnostic is clinical and dependent on the periodic careful examination of the patient by the dentist. The options of treatment that have been suggested depend on clinical factors as: the patient's age, degree of infra-occlusion, the presence and location of the permanent successor, the stage of development of the successor and severity of the damage caused by the anomaly. Through the report of this clinical case of ankylosis multiple of deciduous tooth in child is 6 years of age, sought to illustrate the various stages of this anomaly and its treatments more appropriate. Treatment chosen based on a proper planning through clinical and radiographic examination, for a conduct effective, so that the development of occlusion and the restoration of oral health could occur.


Subject(s)
Humans , Female , Child , Tooth Ankylosis , Tooth, Deciduous
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