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1.
J Endod ; 40(5): 665-9, 2014 May.
Article in English | MEDLINE | ID: mdl-24767561

ABSTRACT

INTRODUCTION: Coconut water (CW) and soy milk (SM) have been proposed as storage media for avulsed teeth because of their nutrients that preserve cell viability. The present study investigated the periodontal healing process of dog teeth replanted after storage in CW, SM, and whole milk (WM) using micro-computed tomographic (µCT) and histologic analyses compared with immediate tooth replantation. METHODS: Forty roots of 10 adult beagle dogs were extracted and subjected to the following protocols: immediate replantation after extraction (control), stored in CW with an adjusted pH, and SM and WM for 50 minutes before replantation. The animals were euthanized 28 days postoperatively, and the obtained specimens were scanned using a µCT scanner and subjected to routine processing for histometric analyses under an optical microscope. RESULTS: CW and SM performed similarly to WM; however, SM showed significantly higher ankylosis than the control group. CONCLUSIONS: Additionally, this study showed that the combined use of histologic analysis and µCT is a promising method to better identify tooth resorption and the repair process and to evaluate the total extension of the periodontium. CW as a storage medium is a promising transport media for avulsed teeth.


Subject(s)
Organ Preservation Solutions/therapeutic use , Tooth Avulsion/therapy , Tooth Replantation/methods , Tooth/pathology , Animals , Cocos , Dental Cementum/pathology , Dogs , Hydrogen-Ion Concentration , Male , Milk , Periodontal Ligament/pathology , Root Resorption/pathology , Soy Milk , Time Factors , Tooth Ankylosis/pathology , Tooth Avulsion/pathology , Wound Healing/physiology , X-Ray Microtomography/methods
2.
Braz Dent J ; 20(3): 211-4, 2009.
Article in English | MEDLINE | ID: mdl-19784466

ABSTRACT

This study evaluated in vitro the capacity of debris removal from the apical third of flattened root canals, using different final irrigation protocols. Thirty human mandibular central incisors with a mesiodistal flattened root were prepared using rotary instrumentation by Endo-Flare 25.12 and Hero 642 30.06, 35.02, 40.02 files, irrigated with 2 mL of 1% NaOCl after each file. The specimens were randomly distributed into 5 groups according to the final irrigation of root canals: Group I: 10 mL of distilled water (control), Group II: 10 mL of 1% NaOCl for 8 min, Group III: 2 mL of 1% NaOCl for 2 min (repeated 4 times), Group IV: 10 mL of 2.5% NaOCl for 8 min, and Group V: 10 mL of 2.5% NaOCl for 2 min (repeated 4 times). The apical thirds of the specimens were subjected to histological processing and 6-microm cross-sections were obtained and stained with hematoxylin-eosin. The specimens were examined under optical microscopy at x40 magnification and the images were subjected to morphometric analysis using the Scion image-analysis software. The total area of root canal and the area with debris were measured in square millimeters. Analysis of variance showed no statistically significant difference (p>0.05) among the groups GI (2.39 +/- 3.59), GII (2.91 +/- 2.21), GIII (0.73 +/- 1.36), GIV (0.95 +/- 0.84) and GV (0.51 +/- 0.22). In conclusion, the final irrigation protocols evaluated in this study using the Luer syringe presented similar performance in the removal of debris from the apical third of flattened root canals.


Subject(s)
Dental Pulp Cavity/drug effects , Root Canal Irrigants/administration & dosage , Root Canal Preparation/instrumentation , Smear Layer , Sodium Hypochlorite/administration & dosage , Dental Pulp Cavity/anatomy & histology , Dose-Response Relationship, Drug , Humans , Incisor , Mandible , Root Canal Preparation/methods , Syringes , Time Factors , Tooth Apex/anatomy & histology
3.
Braz. dent. j ; 20(3): 211-214, 2009.
Article in English | LILACS | ID: lil-526412

ABSTRACT

This study evaluated in vitro the capacity of debris removal from the apical third of flattened root canals, using different final irrigation protocols. Thirty human mandibular central incisors with a mesiodistal flattened root were prepared using rotary instrumentation by Endo-Flare 25.12 and Hero 642 30.06, 35.02, 40.02 files, irrigated with 2 mL of 1 percent NaOCl after each file. The specimens were randomly distributed into 5 groups according to the final irrigation of root canals: Group I: 10 mL of distilled water (control), Group II: 10 mL of 1 percent NaOCl for 8 min, Group III: 2 mL of 1 percent NaOCl for 2 min (repeated 4 times), Group IV: 10 mL of 2.5 percent NaOCl for 8 min, and Group V: 10 mL of 2.5 percent NaOCl for 2 min (repeated 4 times). The apical thirds of the specimens were subjected to histological processing and 6-μm cross-sections were obtained and stained with hematoxylin-eosin. The specimens were examined under optical microscopy at ×40 magnification and the images were subjected to morphometric analysis using the Scion image-analysis software. The total area of root canal and the area with debris were measured in square millimeters. Analysis of variance showed no statistically significant difference (p>0.05) among the groups GI (2.39 ± 3.59), GII (2.91 ± 2.21), GIII (0.73 ± 1.36), GIV (0.95 ± 0.84) and GV (0.51 ± 0.22). In conclusion, the final irrigation protocols evaluated in this study using the Luer syringe presented similar performance in the removal of debris from the apical third of flattened root canals.


Este estudo avaliou, in vitro, a capacidade de remoção de debris do terço apical de canais radiculares achatados, usando diferentes protocolos de irrigação final. Trinta incisivos centrais mandibulares humanos com a raiz mésio-distal achatada foram preparados usando instrumento rotatório Endo-Flare 25.12 e limas Hero 642 30.06, 35.02, 40.02, irrigadas com 2ml de NaOCl 1 por cento após cada lima. Os espécimes foram aleatoriamente distribuídos em cinco grupos de acordo com a irrigação final dos canais radiculares: Grupo I: 10 mL de água destilada (controle), Grupo II: 10 mL de NaOCl a 1 por cento por 8 min, Grupo III: 2 mL de NaOCl a 1 por cento por 2 min (repetidos 4 vezes), Grupo IV: 10 mL de NaOCl 2,5 por cento por 8 min e Grupo V: 10 mL de NaOCl 2,5 por cento por 2 min (repetido 4 vezes). Os terços apicais dos espécimes foram submetidos a processamento histológico de rotina e cortes transversais com 6 μm de espessura foram obtidos e corados com hematoxilina e eosina. Os espécimes foram analisados em microscopia óptica com aumento final de 40 X e as imagens submetidas à análise morfométrica com a utilização do software Scion Image. A análise de variância evidenciou não haver diferença estatística (p>0,05) entre os grupos GI (2,39 ± 3,59), GII (2,91 ± 2,21), GIII (0,73 ± 1,36), GIV (0,95 ± 0,84) e GV (0,51 ± 0,22). Conclui-se que os protocolos de irrigação final utilizando a seringa Luer apresentaram comportamentos semelhantes na remoção de debris do terço apical de canais radiculares achatados.


Subject(s)
Humans , Dental Pulp Cavity/drug effects , Root Canal Irrigants/administration & dosage , Root Canal Preparation/instrumentation , Smear Layer , Sodium Hypochlorite/administration & dosage , Dose-Response Relationship, Drug , Dental Pulp Cavity/anatomy & histology , Incisor , Mandible , Root Canal Preparation/methods , Syringes , Time Factors , Tooth Apex/anatomy & histology
4.
J. appl. oral sci ; 14(4): 260-263, July-Aug. 2006. tab
Article in English | LILACS, BBO - Dentistry | ID: lil-447831

ABSTRACT

OBJECTIVES: The aim of this study was to determine the effect of Er:YAG laser irradiation used to clean dentinal walls on the apical sealing of root canals filled with different types of sealers. Background Data: Laser application to the dentinal walls removed debris, rendering the root canals free of smear layers and leaving the dentinal canaliculi open. METHODS: Sixty-four maxillary canines obtained from laboratory files were instrumented with K-files (Dentsply, Maillefer, Ballaigues, Switzerland) using the crown-down technique, and irrigated with a 0.5 percent sodium hypochlorite solution. The specimens were divided into two groups of 32 teeth each. In group I, the teeth were instrumented and irrigated with sodium hypochlorite solution, and divided into four subgroups to be sealed with the different materials (Endofill, N-Rickert, Sealapex and Sealer 26). In group II, the root canals were subjected to Er:YAG laser irradiation (200 mJ, 7 Hz and 60 J total energy), followed by root canal sealing as in group I. RESULTS: The data showed lower levels of apical microleakage in the teeth filled with N-Rickert, Sealapex and Sealer 26 cements than in those sealed with Endofill (p < 0.01). No significant difference in microleakage was observed between teeth irrigated only with 0.5 percent sodium hypochlorite and those submitted to Er:YAG laser application (p > 0.05). CONCLUSIONS: The Er:YAG laser irradiation applied to the root canal walls was not able to prevent apical microleakage.


OBJETIVOS: Avaliou-se a infiltração marginal apical em caninos superiores, obturados com quatro tipos diferentes de cimento, os quais foram imersos em tinta nanquim e mantidos a uma temperatura de 37° C por 96 horas, descalcificados em solução de ácido clorídrico a 5 por cento, desidratados em série crescente de álcoois e diafanizados em salicilato de metila. MÉTODOS: Para isto, 64 dentes de estoque foram instrumentados pela técnica "crown-down", irrigados com solução de hipoclorito de sódio a 0,5 por cento e divididos em dois grupos experimentais. Os dentes do Grupo I foram subdivididos em quatro sub-grupos de oito elementos e obturados cada um deles com os cimentos Endofill®, N-Rickert®, Sealapex® e Sealer 26®. Os dentes do Grupo II receberam aplicação adicional de laser Er:YAG, tendo seus canais radiculares obturados como aqueles do grupo I. RESULTADOS: A infiltração marginal apical apresentou valores estatisticamente maiores e significantes (p < 0,01), nos dentes obturados com o cimento Endofill®, em relação à infiltração ocorrida nos dentes obturados com os cimentos N-Rickert®, Sealapex® e Sealer 26®. Não houve diferença estatística significante (p > 0,05), quanto à infiltração marginal apical, nos dentes do Grupo I, preparados somente com a solução de hipoclorito de sódio a 0,5 por cento, e naqueles do Grupo II, que foram irradiados com laser Er: YAG. CONCLUSÕES: A irradiação de laser Er:YAG aplicada nas paredes do canal radicular não foi capaz de prevenir a infiltração marginal apical.


Subject(s)
Humans , Dental Cements , Dental Leakage , In Vitro Techniques , Lasers/therapeutic use , Root Canal Filling Materials , Root Canal Irrigants
5.
J. appl. oral sci ; 14(4): 260-263, July-Aug. 2006. tab
Article in English | LILACS, BBO - Dentistry | ID: biblio-873287

ABSTRACT

OBJETIVOS: Avaliou-se a infiltração marginal apical em caninos superiores, obturados com quatro tipos diferentes de cimento, os quais foram imersos em tinta nanquim e mantidos a uma temperatura de 37º C por 96 horas, descalcificados em solução de ácido clorídrico a 5 por cento, desidratados em série crescente de álcoois e diafanizados em salicilato de metila. MÉTODOS: Para isto, 64 dentes de estoque foram instrumentados pela técnica "crown-down", irrigados com solução de hipoclorito de sódio a 0,5 por cento e divididos em dois grupos experimentais. Os dentes do Grupo I foram subdivididos em quatro sub-grupos de oito elementos e obturados cada um deles com os cimentos Endofill«, N-Rickert«, Sealapex« e Sealer 26«. Os dentes do Grupo II receberam aplicação adicional de laser Er:YAG, tendo seus canais radiculares obturados como aqueles do grupo I. RESULTADOS: A infiltração marginal apical apresentou valores estatisticamente maiores e significantes (p < 0,01), nos dentes obturados com o cimento Endofill«, em relação à infiltração ocorrida nos dentes obturados com os cimentos N-Rickert«, Sealapex« e Sealer 26«. Não houve diferença estatística significante (p > 0,05), quanto à infiltração marginal apical, nos dentes do Grupo I, preparados somente com a solução de hipoclorito de sódio a 0,5 por cento, e naqueles do Grupo II, que foram irradiados com laser Er: YAG. CONCLUSÕES: A irradiação de laser Er:YAG aplicada nas paredes do canal radicular não foi capaz de prevenir a infiltração marginal apical


Subject(s)
Humans , Dental Cements , Dental Leakage , Lasers/therapeutic use , Root Canal Filling Materials , In Vitro Techniques , Root Canal Irrigants
6.
J Appl Oral Sci ; 14(4): 260-3, 2006 Aug.
Article in English | MEDLINE | ID: mdl-19089273

ABSTRACT

OBJECTIVES: The aim of this study was to determine the effect of Er:YAG laser irradiation used to clean dentinal walls on the apical sealing of root canals filled with different types of sealers. BACKGROUND DATA: Laser application to the dentinal walls removed debris, rendering the root canals free of smear layers and leaving the dentinal canaliculi open. METHODS: Sixty-four maxillary canines obtained from laboratory files were instrumented with K-files (Dentsply, Maillefer, Ballaigues, Switzerland) using the crown-down technique, and irrigated with a 0.5% sodium hypochlorite solution. The specimens were divided into two groups of 32 teeth each. In group I, the teeth were instrumented and irrigated with sodium hypochlorite solution, and divided into four subgroups to be sealed with the different materials (Endofill, N-Rickert, Sealapex and Sealer 26). In group II, the root canals were subjected to Er:YAG laser irradiation (200 mJ, 7 Hz and 60 J total energy), followed by root canal sealing as in group I. RESULTS: The data showed lower levels of apical microleakage in the teeth filled with N-Rickert, Sealapex and Sealer 26 cements than in those sealed with Endofill (p < 0.01). No significant difference in microleakage was observed between teeth irrigated only with 0.5% sodium hypochlorite and those submitted to Er:YAG laser application (p > 0.05). CONCLUSIONS: The Er:YAG laser irradiation applied to the root canal walls was not able to prevent apical microleakage.

7.
Braz. dent. j ; 12(1): 27-30, jan.-jun. 2001. ilus, graf
Article in English | LILACS, BBO - Dentistry | ID: lil-554373

ABSTRACT

The effect of Er:YAG laser application and EDTAC on the adhesion of epoxy resin-based endodontic sealers to human dentin was evaluated in vitro. A total of 99 extracted human maxillary molars with their crowns worn flat were used. The teeth were divided into 3 groups: group 1, the dentin surface received no treatment; group 2, EDTAC was applied to the dentin surface for 5 min; group 3, the dentin surface received ER:YAG laser application (2.25 W potency; 11 mm focal distance; 4 Hz frequency; 200 mJ energy; 62 J total energy; 313 mean impulse). Three teeth from each group were analyzed by scanning electron microscopy for changes in dentin surface. The epoxy resin root canal sealers used were: AH Plus©, Topseal©, Sealer 26©, AH 26, and Sealer Plus©. The zinc oxide eugenol-based sealer Fillcanal© was used as control. Adhesion was measured with a Universal testing machine. The results showed a statistically significant difference at the level of 1 per cent among the dentin treatments. The dentin treated with Er:YAG laser showed greater adhesion with the sealers than dentin treated with EDTAC which was greater than dentin that received no treatment. The Tukey test showed the formation of 5 groups in decreasing order of adhesion: AH Plus, Topseal and Sealer 26, AH 26, Sealer Plus, and Fillcanal (Grossman cement).


Subject(s)
Edetic Acid/pharmacology , Adhesiveness , Dentin , In Vitro Techniques , Lasers , Epoxy Resins , Root Canal Filling Materials
8.
Braz. dent. j ; 10(2): 63-72, jul.-dez. 1999. tab, CD-ROM
Article in English | LILACS, BBO - Dentistry | ID: biblio-850328

ABSTRACT

The current discussion about the importance of intracanal dressings and the effect of vehicles on calcium hydroxide pastes is justified by controversy concerning the achievement of complete disinfection after preparation of infected root canals and the real antimicrobial effect of these vehicles. The aim of this study is to investigate the role of vehicles in the antimicrobial effect of calcium hydroxide pastes. Well-conducted research about the characteristics of calcium hydroxide, such as antimicrobial potencial, physico-chemical aspects and histocompatibility, gives credibility to the choice of this medication in several clinical situations. Different vehicles have been added to calcium hydroxide in an attempt to enhance its properties. Scientific reasoning indicates the use of hydrosoluble vehicles (distilled water, saline) associated with calcium hydroxide because of their chemical characteristics of dissociation, diffusibility and filling capability which are decisive for the biological behavior, i.e., antimicrobial qualities and induction of tissue repair


Subject(s)
Pharmacology
9.
Internet resource in Portuguese | LIS -Health Information Locator | ID: lis-723

ABSTRACT

Estudo de revisão da anatomia interna dos dentes humanos, com especial enfoque às anomalias de desenvolvimento que podem ocorrer nos dentes humanos.


Subject(s)
Tooth/anatomy & histology , Dental Pulp Cavity/anatomy & histology , Dentistry , Endodontics
11.
In. Estrela, Carlos; Figueiredo, José Antônio Poli de. Endodontia: princípios biológicos e mecânicos. Säo Paulo, Artes Médicas, 1999. p.761-85, ilus. (BR).
Monography in Portuguese | LILACS, BBO - Dentistry | ID: lil-271618
12.
ROBRAC ; 7(23): 50-4, jun. 1998.
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-247324

ABSTRACT

Muitos säo os produtos químicos encontrados nos consultórios odontológicos. Os produtos químicos, quando manipulados inadvertidamente, podem provocar danos à saúde do cirurgiäo-dentista, como por exemplo maior, temos o mercúrio, que se manipulado inadvertidamente pode causar danos irreparáveis ao organismo humano. Além dos produtos químicos o dentista está exposto a uma grande variedade de microorganismos veiculados pelo sangue e pela a saliva de seus pacientes. Esses microorganismos podem causar várias doenças, como um resfriado comum, uma pneumonia, uma tuberculose, uma hepatite B, e muitas outras. Os autores mostram quais as doenças causadas pelos agentes químicos e agentes biológicos a que está exposto o dentista em um consultório, discutindo como prevení-los


Subject(s)
Chemical Compounds , Dentistry , Occupational Diseases , Ergonomics , Lighting/adverse effects , Noise, Occupational/adverse effects , Radiation Exposure , Dental Offices , Hepatitis/etiology , Mercury/adverse effects , Risk Factors , Acquired Immunodeficiency Syndrome/etiology
13.
Rev. Esc. Farm. Odontol. Alfenas ; (19): 57-60, jan.-dez. 1997. tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-203286

ABSTRACT

A ciclofosfamida interferiu no desenvolvimento embrionário, após injeçäo de 6 mg/Kg peso corporal no dia 10 da prenhez. Observou-se: peso corporal fetal diminuído, peso menor da placenta, comprimento do cordäo umbilical reduzido, epitélios respiratório e glandular pouco diferenciados, núcleos de menor tamanho e malformaçöes macroscópicas


Subject(s)
Animals , Cyclophosphamide , Karyometry
14.
Rev. odontol. Univ. Säo Paulo ; 11(1): 67-70, jan.-mar. 1997. tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-872207

ABSTRACT

Por meio da microscopia óptica e da análise morfométrica, pesquisou-se a capacidade de limpeza promovida pela solução de Dakin, pela solução de EDTA, pela mistura das soluções de Dakin e EDTA na proporção de 1:1 e pelo uso alternado da solução de Dakin com a solução de EDTA, quando utilizadas na instrumentação dos canais radiculares. Utilizaram-se 20 incisivos centrais superiores humanos extraídos, que, após a instrumentação e irrigação, foram submetidos ao processo histológico de rotina e à coloração H + E. Os resultados submetidos à análise estatística evidenciaram que o uso da solução de Dakin, quer misturada, quer alternada com a solução de EDTA, promove canais mais limpos, ou seja, com menor porcentagem de detritos do que o uso das demais soluções utilizadas isoladamente

15.
Rev. bras. odontol ; 53(6): 36-7, nov.-dez. 1996. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-192950

ABSTRACT

Os autores apresentaram situaçöes clínicas de isolamento absoluto do campo operatório com ajuda do adesivo cianoacrilato


Subject(s)
Humans , Male , Female , Cyanoacrylates/therapeutic use , Dentin-Bonding Agents , Rubber Dams , Asepsis
16.
ROBRAC ; 6(20): 14-8, dez. 1996. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-187685

ABSTRACT

A preocupaçäo com o bem estar do cirurgiäo dentista durante e após o dia-a-dia clínico já vem sendo estudado há muito tempo. O desconforto e a má postura do profissional, säo fatores determinantes para o aparecimento de doenças profissionais, incomodando e, algumas vezes, impedindo o desempenho profissional do cirurgiäo dentista. No presente trabalho, os autores fazem um alerta contra as possíveis doenças causadas pelo agentes mecânicos, mostrando também aspectos ergonômicos importantes para a prevençäo das doenças ocupacionais


Subject(s)
Humans , Bursitis/etiology , Dentists , Occupational Diseases/complications , Scoliosis/etiology , Dental Equipment , Occupational Diseases/prevention & control , Ergonomics , Dental Instruments/adverse effects , Posture
17.
ROBRAC ; 6(19): 25-8, set. 1996. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-187679

ABSTRACT

A medida que o trabalho torna-se mais dependente da técnica, o número de acidentes e doenças ocupacionais aumentam de maneira impressionante. Sendo o cirurgiäo dentista um trabalhador que usa e depende cada vez mais da técnica, está também exposto a um risco muito grande de contrair doenças profissionais e doenças do trabalho. Dentre os riscos a que odontólogo esta exposto diariamente, pode-se citar, os agentes físicos. Este agente causador de doença ocupacional e sua prevençäo seräo abordados no presente trabalho


Subject(s)
Humans , Dentists , Occupational Diseases/etiology , Occupational Diseases/prevention & control , Noise, Occupational/adverse effects , Occupational Risks , Ergonomics , Lighting/adverse effects , Radiation , X-Rays/adverse effects
18.
Braz. dent. j ; 7(1): 33-40, jan.-jul. 1996. ilus
Article in English | BBO - Dentistry | ID: biblio-850429

ABSTRACT

The external and internal anatomy of 628 extracted, mandibular first and second molars was studied. The external anatomy was studied by measuring each tooth and by observing the direction of the root curvatures from the facial surface. The internal anatomy of the pulp cavity was studied by a method of making the teeth translucent


Subject(s)
Humans , Anatomy, Comparative , Molar/anatomy & histology , Dental Pulp Cavity/anatomy & histology , In Vitro Techniques , Tooth/anatomy & histology
19.
ROBRAC ; 6(17): 19-21, mar. 1996. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-168341

ABSTRACT

Apresentaçäo de um caso clínico dos primeiros pré-molares superiores com três raizes onde realizou-se um estudo de sua anatomia interna e externa


Subject(s)
Humans , Male , Female , Bicuspid/anatomy & histology , Dental Pulp Cavity/surgery , Tooth Root/anatomy & histology
20.
In. Saquy, Paulo César; Pécora, Jesus Djalma. Orientaçäo profissional em odontologia. Säo Paulo, Santos, 1996. p.13-7.
Monography in Portuguese | LILACS, BBO - Dentistry | ID: lil-179746
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