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1.
J Craniofac Surg ; 29(6): 1578-1582, 2018 Sep.
Article in English | MEDLINE | ID: mdl-29742566

ABSTRACT

OBJECTIVE: To evaluate the effect of reusing drills and piezosurgery tips during implant osteotomy on immediate bone cell viability through immunohistochemical analysis. MATERIALS AND METHODS: Six male rabbits were divided into 2 groups and then divided into 5 subgroups-correspond to drills and tips used 10, 20, 30, 40, and 50 times, respectively. All animals received 10 osteotomies in each tibia, by use of the classic drilling procedure in one group (G1) and the piezosurgery device in the other group (G2). For immunohistochemical technique were utilized the osteoprotegerin, RANKL, osteocalcin, and caspase 3. Control procedures were performed by omitting the primary antibodies (negative control). RESULTS: Bone formation and resorption responses presented in more intense way during the piezosurgery. The expression of osteocalcin had become quite intense in piezosurgery groups, but with reduced immunostaining from the 30th osteotomy. The caspase 3 showed the viability of the osteoblast from the 20th osteotomy with piezosurgery and remained constant until the 50th. CONCLUSION: Piezosurgery provides greater osteoblastic cell viability than the system of conventional drilling. CLINICAL RELEVANCE: This study will provide data so that the authors can recycle the drills and tips for implant placement, thus enabling a better cell viability for osseointegration.


Subject(s)
Bone and Bones , Cell Survival/physiology , Osseointegration/physiology , Osteoblasts/physiology , Osteotomy/methods , Piezosurgery/methods , Animals , Bone and Bones/physiology , Bone and Bones/surgery , Dental Implantation, Endosseous/methods , Immunohistochemistry , Male , Osteocalcin/metabolism , Rabbits , Tibia/surgery
2.
ImplantNewsPerio ; 1(1): 84-94, jan.-fev. 2016. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-846998

ABSTRACT

Objetivo: revisar a taxa de sucesso dos implantes em pacientes sob terapia de bifosfonatos (BPs) por doenças que acometem o metabolismo ósseo. Material e métodos: uma busca nas bases de dados Pubmed e ScienceDirect, sem restrição de data e realizada até junho de 2014, usou as palavras-chave "Biphosphonates", "Osteonecrosis of the jaw", "Dental implants", e "Bone metabolism disease". Resultados: 89 artigos foram recuperados. Após os critérios de exclusão, cinco consensos e 13 estudos (cinco retrospectivos, dois prospectivos, quatro série de casos, dois de coorte) foram escolhidos para análise qualitativa. Todos apresentaram casos com o uso de bifosfonato por via oral no tratamento da osteoporose. A osteonecrose foi relacionada com o uso de implantes em pacientes com osteoporose (cinco estudos). O uso intravenoso no tratamento de câncer de mama, próstata e mieloma múltiplo foi associado à ocorrência de osteonecrose (dois estudos). Não foram encontrados estudos em pacientes com doença de Paget nem osteogênese imperfeita. A faixa de tempo para perda do implante foi ampla (dois a 68 meses). As faixas de sucesso dos implantes foram de 62,5% a 100%. O risco de viés foi considerado moderado em sua maioria (dez estudos). Conclusão: em função da expectativa de vida, o número de pacientes sob BPs aumenta progressivamente, e a instalação de implantes deve ser evitada nos pacientes sob via endovenosa. Aqueles sob via oral devem ser advertidos para o quadro clínico de osteonecrose dos maxilares ou perda assintomática dos implantes em qualquer momento.


Objective: to review the dental implant success in patients under bisphosphonate (BPs) therapy for bone metabolic diseases. Material and methods: a search at the Pubmed e ScienceDirect with no date restriction until June 2014 used the key words "Biphosphonates", "osteonecrosis of the jaw", "dental implants", and "bone metabolism disease". Results: 89 articles were retrieved. After exclusion criteria, five consensus and 13 studies (five retrospective, two prospective, four case series, and two cohorts) were selected for qualitative screening. All presented cases with oral bisphosphonate use in case of osteoporosis. The disease was related with the use of dental implants for patients with osteoporosis (five studies). The intravenous use for breast cancer, prostate, and multiple myeloma was associated to osteonecrosis (2 studies). No studies were found for Paget's disease or osteogenesis imperfecta. The time until implant loss was considerable (2 to 68 months). The implant success rates ranged from 62.5% to 100%. The quality of studies was considered moderate (10 articles). Conclusion: due to an increased life expectancy, the number under BPs progressively increases, and the dental implants should be avoided for patients under intravenous therapy. However, those under oral administration must be advised about the clinical scenario of jaw osteonecrosis or asymptomatic dental implant loss at any time.


Subject(s)
Humans , Bone Diseases, Metabolic , Dental Implantation, Endosseous , Diphosphonates/adverse effects , Diphosphonates/therapeutic use , Osseointegration , Osteonecrosis
3.
Braz Dent J ; 26(3): 308-11, 2015.
Article in English | MEDLINE | ID: mdl-26200159

ABSTRACT

In the treatment of extrusive luxation cases, it is important that the repositioning of extruded tooth in the socket is done as soon as possible. If this does not occur, periapical clot becomes organized and makes replantation difficult reposition. In this article the patient referred to the Clinics for dental trauma sustaining extrusive luxation of the maxillary right central incisor. The patient reported having suffered a bicycle accident 12 days before, which caused traumatic tooth injuries. The repositioning was attempted without success and an alternative form of treatment was necessary to solve the case. Intentional tooth replantation, which is the deliberate extraction of the tooth and its replantation, was indicated. This technique allows clot removal and correct repositioning of the extruded tooth. Care should be taken as endodontic treatment is required for the prevention of subsequent infection-related resorption. Intracanal dressing with calcium hydroxide was used for 30 days before final root filling. Splint, systemic antibiotics and avoidance of further damage to the root surface is also important. After 49 months, showed clinical and radiographic characteristics of normality and demonstrates the availability of this technique to adversity in trauma.


Subject(s)
Tooth Avulsion/surgery , Tooth Replantation , Adolescent , Humans , Male
4.
Braz. dent. j ; 26(3): 308-311, May-Jun/2015. graf
Article in English | LILACS | ID: lil-751870

ABSTRACT

In the treatment of extrusive luxation cases, it is important that the repositioning of extruded tooth in the socket is done as soon as possible. If this does not occur, periapical clot becomes organized and makes replantation difficult reposition. In this article the patient referred to the Clinics for dental trauma sustaining extrusive luxation of the maxillary right central incisor. The patient reported having suffered a bicycle accident 12 days before, which caused traumatic tooth injuries. The repositioning was attempted without success and an alternative form of treatment was necessary to solve the case. Intentional tooth replantation, which is the deliberate extraction of the tooth and its replantation, was indicated. This technique allows clot removal and correct repositioning of the extruded tooth. Care should be taken as endodontic treatment is required for the prevention of subsequent infection-related resorption. Intracanal dressing with calcium hydroxide was used for 30 days before final root filling. Splint, systemic antibiotics and avoidance of further damage to the root surface is also important. After 49 months, showed clinical and radiographic characteristics of normality and demonstrates the availability of this technique to adversity in trauma.


No tratamento de casos de luxação extrusiva é importante que o reposicionamento do dente extruído em seu alvéolo seja feito o mais rápido possível. Se isso não ocorrer, o coágulo periapical se torna organizado e dificulta a reposição. Neste artigo, o paciente encaminhado para a clínica de traumatismo dentário apresentava luxação extrusiva do dente 11. O paciente relatou que havia sofrido um acidente de bicicleta 12 dias antes e teve lesões dentárias. Tentou-se fazer o reposicionamento sem sucesso e uma forma alternativa de tratamento foi necessária para resolver o caso. Reimplante intencional, que é a extração do dente e seu reimplante de forma proposital, foi indicado. Esta técnica permite a remoção do coágulo e o reposicionamento correto do dente extruído. Cuidado deve ser observado quanto ao tratamento endodôntico, para a prevenção de uma reabsorção relacionada a uma infecção. Curativo de demora com hidróxido de cálcio foi realizado por 30 dias antes da obturação final. Contenção, antibióticos sistêmicos e evitar maiores danos à superfície da raiz também são importantes. O controle de 38 meses mostrou características clínicas e radiográficas de normalidade e demonstra a disponibilidade desta técnica para a adversidade no trauma.


Subject(s)
Humans , Male , Adolescent , Tooth Avulsion/surgery , Tooth Replantation
5.
Araçatuba; s.n; 2015. 59 p. graf, tab, ilus.
Thesis in Portuguese | LILACS, BBO - Dentistry | ID: biblio-870068

ABSTRACT

Para averiguar a influência da terapia com laser de baixa intensidade (LLLT) no processo de reparo em reimplante dentário, 90 ratos divididos em 3 grupos de 30 animais tiveram o incisivo superior direito extraído. No grupo C o incisivo foi reimplantado sem intervenção adicional. Nos grupos L1 e L2, os dentes foram irradiados com laser diodo antes, no interior do alvéolo, e logo após o reimplante, na parte externa do alvéolo. Essa dose foi repetida as 24, 48 e 72 horas pós-operatórias no grupo L1 e as 48, 96 e 144 horas no grupo L2. Após períodos de 7, 14 e 30 dias, os animais foram sacrificados para análise histológica em hematoxilina e eosina e Picrosirius Red. Observamos valores menores de inflamação no ligamento periodontal no grupo L1 (p<0,05) aos 7 dias. Maior extensão de ligamento periodontal reinserido, nos grupos L1 e L2, aos 7 e 14 dias. Maior extensão de tecido pulpar normal foi encontrada nos grupos L1 e L2 no período de 14 dias. Maior comprometimento pela reabsorção radicular foi observado no grupo C aos 30 dias. Pode-se concluir que a terapia com LLLT influiu positivamente no reparo do ligamento periodontal e tecido pulpar do dente reimplantado.


To investigate the influence of low intensity laser therapy (LLLT) in the repair process of dental reimplantation, 90 mice divided into 3 groups of 30 animals had the right upper incisor extracted. In group C the incisive was reimplanted without further intervention. In the groups L1 and L2, the teeth were irradiated with diode laser before, inside the socket, and after reimplantation, outside of the socket. This dose was repeated 24, 48 and 72 hours after surgery, the group L1 and 48, 96 and 144 hours in the L2 group. After periods of 7, 14 and 30 days, the animals were sacrificed for histological examination with hematoxylin and eosin and Picrosirius Red. We observed smaller values of inflammation in the periodontal ligament in the L1 group (p <0.05) at 7 days. Increased length of periodontal ligament reinserted in the L1 and L2 groups at 7 and 14 days. Greater extent normal pulp tissue was found in the groups L1 and L2 within 14 days. Greater commitment by root resorption was observed in group C at 30 days. It can be concluded that LLLT therapy had a positive influence on the repair of the periodontal ligament and the pulp tissue reimplanted tooth.


Subject(s)
Animals , Male , Female , Rats , Low-Level Light Therapy , Periodontal Ligament/anatomy & histology , Dental Pulp/anatomy & histology , Tooth Replantation/methods , Periodontal Ligament/surgery , Rats, Wistar
6.
Araçatuba; s.n; 2015. 59 p. graf, tab, ilus.
Thesis in Portuguese | LILACS, BBO - Dentistry | ID: biblio-867446

ABSTRACT

Para averiguar a influência da terapia com laser de baixa intensidade (LLLT) no processo de reparo em reimplante dentário, 90 ratos divididos em 3 grupos de 30 animais tiveram o incisivo superior direito extraído. No grupo C o incisivo foi reimplantado sem intervenção adicional. Nos grupos L1 e L2, os dentes foram irradiados com laser diodo antes, no interior do alvéolo, e logo após o reimplante, na parte externa do alvéolo. Essa dose foi repetida as 24, 48 e 72 horas pós-operatórias no grupo L1 e as 48, 96 e 144 horas no grupo L2. Após períodos de 7, 14 e 30 dias, os animais foram sacrificados para análise histológica em hematoxilina e eosina e Picrosirius Red. Observamos valores menores de inflamação no ligamento periodontal no grupo L1 (p<0,05) aos 7 dias. Maior extensão de ligamento periodontal reinserido, nos grupos L1 e L2, aos 7 e 14 dias. Maior extensão de tecido pulpar normal foi encontrada nos grupos L1 e L2 no período de 14 dias. Maior comprometimento pela reabsorção radicular foi observado no grupo C aos 30 dias. Pode-se concluir que a terapia com LLLT influiu positivamente no reparo do ligamento periodontal e tecido pulpar do dente reimplantado


To investigate the influence of low intensity laser therapy (LLLT) in the repair process of dental reimplantation, 90 mice divided into 3 groups of 30 animals had the right upper incisor extracted. In group C the incisive was reimplanted without further intervention. In the groups L1 and L2, the teeth were irradiated with diode laser before, inside the socket, and after reimplantation, outside of the socket. This dose was repeated 24, 48 and 72 hours after surgery, the group L1 and 48, 96 and 144 hours in the L2 group. After periods of 7, 14 and 30 days, the animals were sacrificed for histological examination with hematoxylin and eosin and Picrosirius Red. We observed smaller values of inflammation in the periodontal ligament in the L1 group (p <0.05) at 7 days. Increased length of periodontal ligament reinserted in the L1 and L2 groups at 7 and 14 days. Greater extent normal pulp tissue was found in the groups L1 and L2 within 14 days. Greater commitment by root resorption was observed in group C at 30 days. It can be concluded that LLLT therapy had a positive influence on the repair of the periodontal ligament and the pulp tissue reimplanted tooth


Subject(s)
Animals , Rats , Dental Pulp , Low-Level Light Therapy , Periodontal Ligament , Tooth Replantation , Rats, Wistar
9.
Araçatuba; s.n; 2012. 68 p. ilus, tab.
Thesis in Portuguese | BBO - Dentistry | ID: biblio-866801

ABSTRACT

Traumas na região oral ocorrem com freqüência e representam 5% de todos os ferimentos em que indivíduos procuram tratamento. A prevalência dos traumas de luxação em crianças e pacientes jovens, desperta uma preocupação com a condição do tecido pulpar desses dentes que geralmente apresentam rizogênese incompleta. Outro fator importante é o aumento da prevalência de indivíduos com alterações sistêmicas, principalmente o Diabetes Melittus, que pode levar a um atraso na reparação tecidual e predispor o indivíduo a infecções. Portanto o objetivo deste trabalho foi estudar a reparação periodontal e pulpar de ratos diabéticos e normais submetidos à luxação extrusiva do incisivo superior. Para tanto foram utilizados 30 animais divididos em 3 grupos de 10. No grupo I (controle) não foi realizado nenhum procedimento cirúrgico. Para a indução do Diabetes no grupo III, utilizou-se a estreptozotocina diluída em tampão citrato, aplicada na veia peniana. No grupo II utilizou-se apenas o tampão citrato. Constatada a condição de Diabetes no grupo III, realizou-se neste grupo e no grupo II a luxação extrusiva em 2mm do incisivo superior direito. Após 60 dias os animais foram submetidos à eutanásia e perfusão e as peças obtidas, processadas para análise pela Hematoxilina e Eosina. Foi realizada uma análise histomorfométrica dos resultados. Entre os parâmetros analisados, as maiores alterações ocorreram na inserção do epitélio gengival, tecido pulpar e ligamento periodontal, que se apresentaram mais comprometido nos animais diabéticos. De uma forma geral, não foram encontradas diferenças estatisticamente significantes entre os grupos II e III


Trauma to the oral region occurs frequently and comprises 5% of all injuries for which people seek treatment. The prevalence of dislocation trauma in children and young patients raises a concern about the condition of the pulp tissue of teeth that generally have incomplete root formation. Another important factor is the increasing prevalence of individuals with systemic conditions, especially diabetes mellitus, which can lead to a delay in tissue repair and predispose individuals to infection. Therefore, the purpose was to study the repair of periodontal and pulp tissue of normal and diabetic rats submitted to extrusive luxation of the maxillary incisor. Therefore, we use 30 animals divided into 3 groups of 10. In group I (control) was not carried out any surgical procedure. For the induction of Diabetes in group III was used the streptozotocin diluted in citrate buffer applied to the penile vein. Group II was used only citrate buffer. Given the condition of diabetes in group III, in this group and group II was performed the extrusive luxation of 2mm in the right maxillary incisor. After 60 days the animals were euthanized and perfusion and the specimens were processed for analysis by hematoxylin and eosin. We performed a histomorphometric analysis of the results. Among the parameters analyzed, the largest changes occurred in the insertion of the gingival epithelium, dental pulp and periodontal ligament, which were more impaired in diabetic animals. Overall, there were no statistically significant differences between groups II and III


Subject(s)
Animals , Rats , Dental Pulp , Diabetes Mellitus , Periodontal Ligament , Root Resorption , Rats, Wistar
11.
Rev. Salusvita (Online) ; 30(1): 39-46, 2011. ilus
Article in Portuguese | LILACS | ID: lil-641178

ABSTRACT

Introdução: O complexo zigomático maxilar é a segunda área da face mais atingida por injúrias, superada, apenas, pelos ossos nasais. O arco zigomático fratura-se sob ação direta de traumas (soco, cabeçada), graças à sua estrutura frágil, perdendo a curvatura convexa normal na área temporal. Objetivo: Relatar um caso clínico, utilizando uma técnica de redução de fratura do arco zigomático por meio de um gancho de Ginestet ou de Barros. Relato do caso: Paciente do sexo masculino, 25 anos de idade, leucoderma, apresentando fratura do arco zigomático a direita. O tratamento realizado foi redução incruenta com o gancho adaptado sobre a pele. O paciente foi instruído a manter cuidado com a região por pelo menos quatro semanas.


Introduction: The zygomatic maxillary complex is the second most affected area of the face due to injuries, surpassed only by the nasal bones. The zygomatic arch fracture is under the direct action of trauma (punch, head butt), its fragile structure, losing its normal convex curvature in the temporal area. Objective: To report a case, using a reduction technique of zygomatic arch fracture using a hook or Ginestet Barros. Case report: A male patient, 25 years of age, leukoderma, showing zygomatic arch fracture right. The patient underwent closed reduction with the hook adapted to the skin. The patient was instructed to keep care of the region for at least four weeks.


Subject(s)
Humans , Zygomatic Fractures , Traumatology , Zygoma
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