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1.
Photobiomodul Photomed Laser Surg ; 38(7): 425-430, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32667862

ABSTRACT

Objective: To investigate whether photobiomodulation (PBM) applied in a clinical situation with the purpose of improving the healing process of implants placed in the rabbit mandible would cause any morphological change in the thyroid and sublingual glands as a systemic effect of laser irradiation. Methods: Thirty-two New Zealand rabbits were randomly divided into four groups of eight animals each, one control group (CI, nonirradiated animals) and three experimental groups (EI, EII, and EIII) that received PBM postoperatively with an aluminum/gallium/arsenide laser diode (Theralase®) at a wavelength of 830 nm (infrared) and 50 mW output power applied to two irradiation fields per session, for a total of seven sessions. All rabbits underwent surgical extraction of the mandibular left incisor, followed by immediate placement of an osseointegrated implant in the fresh socket. The experimental groups EI, EII, and EIII received PBM at an energy density of 5, 2.5, and 10 J/cm2, respectively, per irradiation field. Results: There was no histomorphometric change in any of the groups. Conclusions: PBM, based on the irradiation protocol used in this study, does not cause morphological changes in the thyroid and sublingual glands when used to stimulate peri-implant bone healing in the rabbit mandible.


Subject(s)
Lasers, Semiconductor/therapeutic use , Low-Level Light Therapy , Mandible/surgery , Sublingual Gland/radiation effects , Thyroid Gland/radiation effects , Wound Healing/radiation effects , Animals , Bone-Implant Interface , Dental Implantation , Dental Implants , Disease Models, Animal , Male , Rabbits
2.
ROBRAC ; 26(79): 77-81, out./dez. 2017. ilus
Article in Portuguese | LILACS | ID: biblio-906004

ABSTRACT

Introdução: A colocação de implantes na região posterior da maxila é uma prática clínica comum, mas essa área requer um cuidado especial, sendo que devido as suas particularidades alguns acidentes podem ocorrer com maior facilidade. Dentre os possíveis acidentes que podem ocorrer, um deles é o deslocamento do implante para o interior do seio maxilar, onde a sua permanência pode trazer consequências como, por exemplo, sinusite aguda ou crônica, por isso o tratamento recomendado é a remoção cirúrgica do mesmo. Relato de Caso: Através de um acesso tipo Caldwell- -Luc, o implante foi abordado e removido dentro do seio maxilar. Objetivo: Este trabalho é um relato de caso de uma intercorrência ocorrida na região posterior da maxila quando da instalação do implante, em que o mesmo foi, acidentalmente, deslocado para o interior do seio maxilar e sua solução cirúrgica fora apresentada. Conclusões: a região posterior da maxila é uma área delicada para a colocação de implantes devido a fatores como baixa densidade e a pouca disponibilidade óssea devido a reabsorções da crista alveolar e a pneumatização do seio maxilar, possibilitando o surgimento de intercorrências no trans-cirúrgico.


Introduction: Placement of implants in the posterior region of the maxilla is a common clinical practice, but this area requires special care, and due to its particularities some accidents can occur with greater ease. Among the possible accidents that may occur, one of them and the displacement of the implant into the maxillary sinus, where its permanence can bring consequences such as acute or chronic sinusitis, so the recommended treatment is a surgical removal of it. Case Report: Through a Caldwell-Luc type access, the implant to approach and removed within the maxillary sinus. Objective: This study is a case report of an intercurrent occurrence in the posterior region of the maxilla when implanting the implant, where it was accidentally moved into the maxillary sinus and its surgical solution for presentation. Conclusions: a posterior region of the maxilla is a delicate area for implant placement due to low density and poor bone availability due to resorption of the alveolar ridge and the pneumatization of the maxillary sinus, allowing the appearance of nontrans- surgical complications.

3.
ROBRAC ; 26(76): 45-50, jan./mar. 2017. ilus
Article in English | LILACS | ID: biblio-875280

ABSTRACT

Technological advances in implant dentistry have substantially increased the number of rehabilitations of patients with immediate esthetic needs, particularly when the use of removable prosthesis during osseointegration does not meet patient expectations and demands. The placement of dental implants and the adequate immediate provisionalization should ensure high-quality functional and esthetic results and a good prognosis. However, questions remain about whether rehabilitation should be immediate in case of fresh sockets, particularly when the gingival phenotype is unfavorable. This report describes a clinical case of extraction of teeth #11 and #21, immediate dental implant placement and placement of a provisional using the crown of the natural teeth freshly extracted. Results are compared with findings reported in recent studies, and the ideal treatment to maintain gingival architecture is discussed.


Os avanços tecnológicos na Implantodontia fizeram com que as reabilitações de pacientes com necessidade estética imediata tivessem um crescimento exponencial nos últimos anos, especialmente em situações onde a utilização de restaurações protéticas removíveis durante o período de osseointegração não contemplam o nível de exigência e a expectativa do paciente. A instalação de um implante osseointegrável e a sua adequada provisionalização imediata devem ser feitas com elevada qualidade a fim de se colaborar com as questões funcionais e estéticas para um bom prognóstico. Todavia, questionamentos se estabelecem no momento em que a resolução imediata do caso deva ser feita em alvéolo fresco pós-exodontia, especialmente em situações de fenótipo gengival desfavorável. Assim sendo, este artigo tem por objetivo apresentar um caso clínico onde se realizou a exodontia dos dentes 11 e 21, a inserção imediata de implantes osseointegráveis e a provisionalização com a coroa dos dentes naturais recém-extraídos, comparando com a literatura atual, a condição ideal de reabilitação desses casos para manutenção da arquitetura gengival inicial.

4.
Lasers Med Sci ; 31(9): 1789-1795, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27534769

ABSTRACT

The purpose of the present study is to evaluate the effects of low-level laser therapy on the osseointegration process by comparing resonance frequency analysis measurements performed at implant placement and after 30 days and micro-computed tomography images in irradiated vs nonirradiated rabbits. Fourteen male New Zealand rabbits were randomly divided into two groups of seven animals each, one control group (nonirradiated animals) and one experimental group that received low-level laser therapy (Thera Lase®, aluminum-gallium-arsenide laser diode, 10 J per spot, two spots per session, seven sessions, 830 nm, 50 mW, CW, Ø 0.0028 cm2). The mandibular left incisor was surgically extracted in all animals, and one osseointegrated implant was placed immediately afterward (3.25ø × 11.5 mm; NanoTite, BIOMET 3i). Resonance frequency analysis was performed with the Osstell® device at implant placement and at 30 days (immediately before euthanasia). Micro-computed tomography analyses were then conducted using a high-resolution scanner (SkyScan 1172 X-ray Micro-CT) to evaluate the amount of newly formed bone around the implants. Irradiated animals showed significantly higher implant stability quotients at 30 days (64.286 ± 1.596; 95 % confidence interval (CI) 60.808-67.764) than controls (56.357 ± 1.596; 95 %CI 52.879-59.835) (P = .000). The percentage of newly formed bone around the implants was also significantly higher in irradiated animals (75.523 ± 8.510; 95 %CI 61.893-89.155) than in controls (55.012 ± 19.840; 95 %CI 41.380-68.643) (P = .027). Laser therapy, based on the irradiation protocol used in this study, was able to provide greater implant stability and increase the volume of peri-implant newly formed bone, indicating that laser irradiation effected an improvement in the osseointegration process.


Subject(s)
Dental Implantation, Endosseous , Lasers, Semiconductor/therapeutic use , Low-Level Light Therapy/methods , Osseointegration/radiation effects , Animals , Disease Models, Animal , Male , Mandible , Rabbits , Random Allocation , X-Ray Microtomography
5.
ImplantNewsPerio ; 1(1): 58-66, jan.-fev. 2016. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-846988

ABSTRACT

Objetivo: fazer uma revisão da literatura sobre o laser de baixa intensidade (LLLT) e seus efeitos na osseointegração dos implantes de titânio. Material e métodos: uma busca eletrônica foi realizada nos bancos de dados PubMed/Medline e Cochrane Library, entre 1995 e 2015, limitando-se aos artigos em inglês e usando as seguintes palavras-chave: "LLLT", "dental implant" e "osseointegration", combinadas por operadores booleanos. Resultados: das 96 referências analisadas inicialmente, apenas 17 artigos foram incluídos (15 estudos em animais, dois estudos em humanos). Quinze artigos mostraram efeitos positivos da LLLT, enquanto dois foram neutros. Houve grande variabilidade no uso da LLLT, sobretudo no que se refere à dose utilizada, ao número de sessões, à energia de irradiação, e ao comprimento de onda. Conclusão: mais pesquisas sobre este tema são necessárias, utilizando doses padronizadas, assim como comprimento de onda e protocolos de aplicação pré-definidos.


Objective: to perform a systematic review on low-level laser therapy (LLLT) and its effects on the osseointegration of titanium implants. Material and methods: an electronic search was on the PubMed/Medline database and Cochrane Library between 1995 e 2015, restricted to the English literature and using the keywords: "LLLT", "dental implant", and "osseointegration" combined by Boolean operators. Results: from the 96 initially retrieved references, only 17 articles were included (15 animal studies, 2 human studies). Fifteen articles showed positive effects, while only two demonstrated neutral effects of LLLT. A great variability was found on LLLT regarding doses, number of sessions, energy, and wavelengths used. Conclusion: further research on this topic need to be made using standard doses, wavelengths, and pre-defi ned application protocols.


Subject(s)
Humans , Laser Therapy , Lasers/statistics & numerical data , Low-Level Light Therapy , Osseointegration/radiation effects
6.
RFO UPF ; 21(1): 102-108, jan./ abr.2016.
Article in Portuguese | LILACS | ID: biblio-2386

ABSTRACT

Introdução: na implantodontia atual, a precisão do planejamento pré-operatório, tanto durante a instalação dos implantes quanto no momento da restauração protética, é um pré-requisito fundamental para o sucesso da reabilitação do complexo maxilomandibular. Assim, as guias cirúrgicas para instalação dos implantes tornaram-se uma ferramenta valiosa para a transferência precisa do planejamento da posição dos implantes para o leito cirúrgico. A instalação de implantes por meio de cirurgias guiadas por guias prototipados apresenta elevadas taxas de sucesso, tendo como característica principal a redução do tempo operatório devido ao planejamento e à cirurgia virtual prévia. Objetivo: o objetivo deste trabalho é descrever as etapas técnicas de uma cirurgia guiada sem retalho em maxila edêntula de paciente, relatando um caso clínico em que se compara o planejamento virtual com o posicionamento final dos implantes instalados por meio de tomografias de feixe cônico. Relato de caso: paciente do gênero feminino, 64 anos, com desejo de realizar implantes em maxila edêntula, tendo indicação e disponibilidade óssea para realização de cirurgia guiada. Considerações finais: de acordo com o caso clínico apresentado, pode-se concluir que esta técnica cirúrgica permite um melhor planejamento dos implantes, torna o procedimento cirúrgico mais preciso e rápido, como também aumenta a previsibilidade dos resultados.

7.
ROBRAC ; 24(69): 76-80, abr./jun. 2015. ilus
Article in English | LILACS | ID: biblio-832312

ABSTRACT

Odontogenic infection is still a reality of the oral cavity, consequence of lack of access to preventive odontology, of bad treatment when the case is at the beginning or of ignorance about the complication associated to this infection. In this context, moderate and severe infection is a common occurrence in Clinical Dentistry, where septic tooth infection in patients with or without systemic alterations may lead to surgical procedures which are expensive for the public and private health system. The goal of this article is to present a series of clinical cases of odontogenic infection (moderate and/or severe) treated in Oral & Maxillofacial Surgery hospitals, presenting and discussing the many immediate and mediate forms of treatment, and also the possibility of preventive care.


As infecções odontogênicas ainda são uma realidade no universo dos processos infecciosos da cavidade bucal, sendo consequentes às dificuldades de acesso à Odontologia preventiva ou pela má condução clínica quando o caso ainda está em fase inicial e, ainda, por desconhecimento das complicações associadas a estas infecções. Neste contexto, situações de infecções moderadas a severas ocorrem diariamente nos serviços de Odontologia Hospitalar, onde a manutenção de dentes sépticos por longos períodos podem levar, em pacientes com ou sem alterações sistêmicas, a tratamentos cirúrgico-medicamentosos de elevado custo para o sistema público e privado. Dessa forma, este artigo tem por objetivo apresentar uma série de casos clínicos de infecções odontogênicas (moderadas e/ou graves) tratados em serviços hospitalares de Cirurgia e Traumatologia Buco-Maxilo-Faciais, apresentando e discutindo as diversas formas de tratamento imediata e mediata, como também, as possibilidades de cuidados prévios ao seu acometimento.

8.
Int J Oral Maxillofac Implants ; 30(5): 1028-35, 2015.
Article in English | MEDLINE | ID: mdl-26394337

ABSTRACT

PURPOSE: To evaluate the effects of low-level laser therapy (LLLT) on peri-implant bone regeneration by means of resonance frequency analysis and histologic analysis of bone-to-implant contact (BIC). MATERIALS AND METHODS: Thirty-two male New Zealand rabbits were randomly divided into four groups of eight animals each, one control group (nonirradiated animals) and three experimental groups that received LLLT (group E5 = 5 J per session; group E10 = 10 J per session; group E20 = 20 J per session). The mandibular left incisor was surgically extracted in all animals, and a nanoparticle-treated-surface osseointegrated implant was placed immediately afterward. The experimental groups were irradiated with aluminum-gallium-arsenide laser diode every 48 hours over a 13-day period for a total of seven sessions. Implant stability quotients (ISQs) were measured at the time of implant placement and 30 days after the last LLLT session. The animals were then euthanized and dissected, and histologic slides of the implant region were obtained for BIC evaluation. RESULTS: Significant differences in ISQ were detected between groups before and after LLLT, with group E20 showing significantly higher values than controls. The percentage of BIC was also significantly higher in group E20 than in control animals. CONCLUSION: Laser therapy at a dose of 20 J per treatment session, based on the irradiation protocol used in this study, was able to significantly increase ISQ values and BIC after implant placement, indicating that laser irradiation effected an improvement in peri-implant bone healing.


Subject(s)
Dental Implants , Low-Level Light Therapy/methods , Mandible/radiation effects , Osseointegration/radiation effects , Animals , Bone-Implant Interface/anatomy & histology , Bone-Implant Interface/radiation effects , Dental Implantation, Endosseous/methods , Dental Prosthesis Design , Dental Prosthesis Retention , Lasers, Solid-State/therapeutic use , Male , Mandible/anatomy & histology , Mandible/surgery , Nanoparticles/chemistry , Osteogenesis/radiation effects , Rabbits , Random Allocation , Surface Properties , Tooth Socket/anatomy & histology , Tooth Socket/radiation effects , Tooth Socket/surgery , Vibration
9.
Photomed Laser Surg ; 33(3): 123-8, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25751666

ABSTRACT

OBJECTIVE: The purpose of this study was to demonstrate the effect of low-level laser therapy (LLLT) on the peri-implant bone healing process in the rabbit mandible. BACKGROUND DATA: LLLT has been shown to accelerate tissue repair and osseointegration of implants placed into the rabbit tibia. However, the beneficial effects of LLLT have never been tested in the rabbit mandible, which would more closely mimic the human situation. MATERIALS AND METHODS: Twenty-four male New Zealand rabbits were randomly divided into four groups of six animals each. All animals had their left mandibular incisors extracted, followed by immediate insertion of a titanium dental implant in the fresh socket. Three groups received LLLT [aluminum-gallium-arsenide (AlGaAs), λ=830nm, 50 mW, continuous wave (CW)] at three different energy densities per treatment session (E-5, 5 J/cm(2); E-10, 10 J/cm(2); and E-20, 20 J/cm(2)). Irradiation was performed every 48 h for 13 days, totaling seven sessions. One group received sham treatment (controls). Histological sections were obtained from each of the 24 mandibles dissected, without first decalcifying the specimens, and were stained with hematoxylin and eosin and Picrosirius red for histomorphometric evaluation. Bone-to-implant contact (BIC), bone formation area, and collagen fiber area were assessed by light microscopy. RESULTS: Significant differences were found between group E-20 and all other groups (p<0.05). Histomorphometric evaluation showed significantly higher BIC and significantly more collagen fibers in group E-20. CONCLUSIONS: Photobiostimulation with LLLT at an energy density of 20 J/cm(2) per session had a significant positive effect on new bone formation around dental implants inserted in the rabbit mandible.


Subject(s)
Low-Level Light Therapy , Mandible/pathology , Wound Healing/radiation effects , Animals , Male , Mandible/radiation effects , Osteogenesis/radiation effects , Rabbits
10.
Photomed Laser Surg ; 32(11): 612-7, 2014 Nov.
Article in English | MEDLINE | ID: mdl-25265487

ABSTRACT

OBJECTIVE: The purpose of this study was to assess the systemic effects of low-level laser therapy (LLLT) on thyroid gland function and, consequently, calcium regulation - as measured by serum triiodothyronine (T3), thyroxine (T4), and free calcium levels - when administered after dental implant placement in a rabbit model. BACKGROUND DATA: Protocols for the use of laser therapy in several clinical procedures are currently under investigation, as not all of the actions and systemic effects of laser irradiation have been clearly established. MATERIALS AND METHODS: Forty male adult New Zealand rabbits were distributed across five groups of eight animals each: two control groups (C-I and C-II) of unirradiated animals, and three experimental groups (E-5, E-10, and E-20), each exposed to a distinct dose of gallium-aluminum-arsenide (GaAlAs) laser [λ=830 nm, 50 mW, continuous wave (CW)] every 48 h for a total of seven sessions. The total dose per session was 5 J/cm(2) in E-5, 10 J/cm(2) in E-10, and 20 J/cm(2) in E-20. Animals in C-II and all experimental groups underwent surgical extraction of the mandibular left incisor followed by immediate placement of an osseointegrated implant (Nanotite(®), Biomet 3i(™)) into the socket. Animals in group C-I served as an absolute control for T3, T4, and calcium measurements. The level of significance was set at 5% (p≤0.05). RESULTS: ANOVA with Tukey's post-hoc test revealed significant differences in T3 and calcium levels among experimental groups, as well as significant within-group differences in T3, T4, and calcium levels over time. CONCLUSIONS: Although not reaching abnormal values, LLLT applied to the mandible influenced thyroid function in this model.


Subject(s)
Dental Implants , Low-Level Light Therapy/methods , Thyroid Gland/radiation effects , Thyroid Hormones/metabolism , Animals , Calcium/metabolism , Immediate Dental Implant Loading , Incisor , Male , Mandible/surgery , Models, Animal , Rabbits , Thyroxine/radiation effects , Triiodothyronine/metabolism
11.
ImplantNews ; 11(5): 663-672, 2014. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-731514

ABSTRACT

Este artigo buscou demonstrar um caso clínico de fratura radicular de um incisivo central superior direito (dente 11) após traumatismo dentário, no qual se realizou a exodontia daquele elemento, inserção de um implante osseointegrável e provisionalização imediata através da coroa natural do dente fraturado, realizando-se o diagnóstico e o acompanhamento do caso por meio de tomografia computadorizada cone-beam. Pode-se notar que a possibilidade do uso de provisórios realizados imediatamente após a extração com a coroa natural do dente perdido alia a manutenção das características gengivais e dentárias. Além disso, o controle por meio do uso de TCCB possibilitou a avaliação pós-operatória, onde se notou a manutenção do tecido ósseo vestibular mesmo sem o uso de enxertia óssea nessa região, neste caso, tendo-se o gap menor do que 2 mm.


This article illustrates a case report with trauma and root fracture at the maxillary central incisor (11) followed by extraction and immediate provisionalization using the own patient´s natural tooth crown. This treatment modality allows for maintenance of the gingival and dental characteristics. Besides, the use of CBCT in the postoperative phase demonstrated that the bone tissue was preserved without grafting in a gap area with less than 2 mm.


Subject(s)
Humans , Male , Middle Aged , Cone-Beam Computed Tomography , Dental Implantation , Dental Prosthesis , Esthetics, Dental
12.
RFO UPF ; 18(2): 235-245, Mai.-Ago. 2013. ilus, tab
Article in Portuguese | LILACS | ID: lil-720749

ABSTRACT

Objetivos: descrever a técnica cirúrgica e a sequência laboratorial utilizada na obtenção de dados por meio de dosagem hormonal, análise da frequência de ressonância (AFR), tomografia computadorizada de feixe cônico (TCFC), microscopia eletrônica de varredura (MEV), espectrometria por dispersão de energia (EDS) e análise histológica e histomorfométrica da região perimplantar pós-terapia com laser não ablativo (LLLT) em modelo experimental coelho. Materiais e método: foram utilizados 40 coelhos machos, raça Nova Zelândia, distribuídos em cinco grupos, sendo dois grupos designados controle (CI e CII) e três grupos designados experimentais (EI, EII, EIII). Os cinco grupos foram submetidos a coletas sanguíneas para dosagens de tri-iodotironina (T3), tiroxina (T4), cálcio e albumina, sendo o grupo CI considerado controle hematológico absoluto. Nos demais grupos (CII, EI, EII e EIII), foram realizadas a extração do incisivo inferior esquerdo e a colocação de um implante imediato com aferição da frequência de ressonância (AFR). Nos grupos experimentais, foi realizada laserterapia com três doses distintas (EI=70J/cm2, EII=35J/cm2, EIII=140J/cm2). Aos 45 dias, os animais dos grupos CII, EI, EII e EIII foram novamente submetidos à aferição da frequência de ressonância, foram mortos e tiveram suas mandíbulas dissecadas e avaliadas por TCFC, MEV e EDS. As mandíbulas foram incluídas, seccionadas e coradas com coloração de HE, picrosirius- -red e azul de toluidina para análise histomorfométrica da extensão linear de contato entre osso e implante (ELCOI) e a área óssea (AO) por meio de microscopia ótica. Considerações finais: apresenta-se um roteiro que pode servir de modelo para colegas pesquisadores.


Objectives: to describe surgical and laboratorial techniques used in an experimental rabbit model. The aim of the study was to obtain data using the following techniques: hormonal dosage, resonance frequency analysis (RFA), cone beam computed tomography (CBCT), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), peri-implant histological and histomorphometric analysis after low-level laser therapy (LLLT). Materials and method: a total of 40 New Zealand male rabbits were divided into five groups. Two groups designated control (CI and CII) and three groups designated experimental (EI, EII, EIII). All groups underwent blood sampling for measurements of triiodothyronine (T3) and thyroxine (T4), calcium and albumin, with the CI group being considered absolute hematological control. For the other groups (CII, EI, EII and EIII) the extraction of the lower left incisor was performed followed by placement of an immediate implant with measurement of resonance frequency. The experimental groups were subjected to laser therapy with three different doses (EI = 70J/cm2, EII = 35J/cm2, EIII = 140J/cm2). Groups CII, EI, EII and EIII were subjected to the measurement of resonance frequency after 45 days, killed and the jaw was dissected to be evaluated by CBCT, SEM and EDS. Then, the samples were included, sectioned and stained with HE staining, picrosirius-red and toluidine blue for histomorphometric analysis by linear extent of bone-implant contact (BIC) and bone area (BA) using light microscopy. Final considerations: a technical sequence that can provide a model for fellow researchers was presented.

13.
ImplantNews ; 10(1): 49-56, 2013. tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-731420

ABSTRACT

O implantodontista e sua equipe podem se deparar com alguma emergência médica durante o exercício de sua atividade profissional, o que deve ser considerado mesmo durante procedimentos não invasivos. Sabe-se da importância de um controle rápido e eficaz das situações de urgência e emergência que poderão ocorrer no consultório odontológico. Em vista disso, através desta revisão da literatura, procuramos alertar e orientar o cirurgião-dentista, em especial o implantodontista, sobre as principais situações de emergências médicas que poderão ocorrer no consultório odontológico, apresentando os sinais e os sintomas das mesmas e as formas de tratamento e/ou os primeiros cuidados que deverão ser tomados para a manutenção da vida do paciente.


Dental implant practitioners and related staff can be faced with a medical emergency throughout their professional activity and this must be considered even during non-invasive procedures. The importance of a fast and effective control upon urgency and emergency situations that may occur at the dental office is well known. Thus, through this literature review, the dental implant practitioner can be advised on major medical emergencies that may occur in the dental office, with its accompanying signs and symptoms, and what treatment forms and/or first actions must be taken to keep the patient’s life.


Subject(s)
Humans , Dental Implantation , Emergency Treatment , Cardiopulmonary Resuscitation
14.
RFO UPF ; 17(3)set.-dez. 2012.
Article in Portuguese | LILACS | ID: lil-683513

ABSTRACT

Objective: The aim of this study was to assess the effect of low-level laser therapy on tissue repair in the rabbit mandible after osteotomy and distraction osteogenesis, through histological analysis of the area of bone neo formation and measurement of the amount of neoformed bone. Methods: Twenty-four male New Zealand white rabbits were randomly allocated into one of two groups: experiment (laser applied directly over the site of fracture and distraction osteogenesis) or control (non-irradiated animals). Distraction osteogenesis was performed according to the following protocol: 3 days of latency, 7 days of activation (0.8 mm/day), and 10 days of consolidation. In the experiment group, irradiation was performed with an infrared laser (AlGaAs; wave-length 830 nm, CW, time 101 seconds, 40mW), at a dose of 10 J/cm2 per session, every 48 hours during the activation period. Twenty days after surgery, all rabbits were sacrificed. Results: The amount of neoformed bone was significantly higher in the laser-treated group (62.68%) than in the control group (43.09%) (p < 0.001). Conclusion: The application of low-level laser therapy following the irradiation protocol used in this study had a positive effect on the tissue repair process in a rabbit model of mandibular fracture and distraction osteogenesis, as shown by histological analysis.

15.
Dent. press implantol ; 6(4): 66-74, oct.-dec. 2012. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-698312

ABSTRACT

Atualmente, um dos grandes desafios da Odontologia está relacionado à reabilitação bucal de pacientes que sofreram perdas dentárias por trauma, em especial nos elementos anterossuperiores. Nessas situações, os resultados estéticos e funcionais, associados à manutenção da saúde periodontal, são primordiais para a obtenção do sucesso e para o estabelecimento de um prognóstico adequado. Para essas situações dispomos da Implantodontia, que possibilita restituições dentárias por meio da inserção de implantes osseointegráveis suportando próteses aparafusadas ou cimentadas em substituição aos elementos perdidos. Uma etapa de provisionalização bem executada possibilita a manutenção dos tecidos gengivais em uma arquitetura harmoniosa, favorecendo o resultado final do tratamento como um todo. O presente artigo visa apresentar um caso clínico de fratura radicular de incisivo central superior direito (11) por traumatismo dentário, no qual se realizou a exodontia desse elemento, a inserção de implante imediato e a provisionalização subsequente com a coroa clínica do dente natural fraturado. Assim, verifica-se que a utilização da coroa do dente fraturado na confecção do provisório é uma técnica plausível quando se necessita não apenas de um resultado estético adequado, mas função imediata e, principalmente, manutenção da harmonia gengival e dentária.


One of the major current challenges in Dentistry is oral rehabilitation after tooth loss due to trauma. Esthetic and functional results, together with periodontal health, define success and prognosis. Implant dentistry provides the resources for the placement of osseointegrated screw-retained implants or cemented prostheses to replace missing teeth. Carefuluse of provisional prostheses preserves the harmonious architecture of gingival tissues and affects final treatmentresults positively. This study describes a clinical case of root fracture of the right maxillary central incisor (tooth # 11)due to dental trauma. The tooth was extracted, an immediate implant was placed and the provisional prosthesis was fabricated using the clinical crown of the fractured tooth. The use of a fractured tooth for provisional restorations is a viable technique that has good esthetic and functional results and preserves gingival and dental balance.


Subject(s)
Humans , Female , Adult , Dental Implants, Single-Tooth , Immediate Dental Implant Loading , Incisor/injuries , Tooth Fractures , Tooth Injuries , Tooth Crown
16.
Rev. odonto ciênc ; 14(27): 43-60, jun. 1999. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-262631

ABSTRACT

O objetivo do presente trabalho é propor aos profissionais da odontologia (através da demonstraçäo de um caso clínico) uma técnica semidireta para confecçäo de restauraçöes que envolvam faces proximais com resina composta fotopolimerizável reforçada com Ribbond, visando a preservaçäo de estrutura dentária através de uma técnica alternativa para a reconstruçäo de elementos dentários que necessitam de reabilitaçäo, seja ela direta ou indireta


Subject(s)
Humans , Composite Resins , Dental Restoration, Permanent/classification
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