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1.
Rev. cuba. estomatol ; 59(2): e3544, abr.-jun. 2022. graf
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1408393

RESUMO

Introducción: La elevación de seno maxilar con implante dental simultáneo, sin el uso de substitutos óseos, ha retomado la teoría del potencial de neoformación ósea, que el coágulo de sangre alojado bajo la membrana de Schneider por sí solo presenta. Excluyendo así la necesidad de materiales exógenos. Objetivo: Exponer la efectividad de la elevación de seno maxilar con implante dental simultáneo, sin el uso de injerto, mediante la evaluación de la cantidad de ganancia ósea vertical. Presentación de casos: Caso 1: Paciente de 62 años, género femenino, que fue sometida a una elevación de seno maxilar sin injerto e implante dental simultáneo, con técnica de ventana lateral debido a altura ósea reducida de 5,24 mm. Luego del período de seguimiento tomográfico de 12 meses, después de la carga protésica, se logró una altura ósea vertical de 10,2 mm, lo que dio como resultado una ganancia ósea vertical de 4,96 mm. Caso 2: Paciente de 48 años, género femenino, que fue sometida a una elevación de seno maxilar sin injerto e implante dental simultáneo, con técnica transalveolar, mediante el uso de piezoeléctrico debido a una altura ósea reducida de 8,33 mm. Luego del período de seguimiento radiográfico de 4 meses, antes de la carga protésica, se logró una altura ósea vertical de 11,55 mm, lo que dio como resultado una ganancia ósea vertical de 3,19 mm. Conclusiones: Con base en estos 2 informes de casos, la elevación de seno maxilar e implante dental simultáneo sin injerto se asocian con la reducción de la morbilidad quirúrgica, menor probabilidad de procesos infecciosos y menor costo de la cirugía. Por lo tanto, puede considerarse una alternativa quirúrgica para la colocación de implantes en el maxilar posterior superior debido a deficiencias óseas verticales, independientemente de la técnica (lateral o transalveolar(AU)


Introduction: Maxillary sinus lift with simultaneous dental implantation without using bone substitutes, reapproaches the theory about the bone neoformation potential of the blood clot housed under the Schneider membrane, all by itself, thus excluding the need to use exogenous materials. Objective: Discuss the effectiveness of graftless maxillary sinus lift with simultaneous dental implant placement through an evaluation of the amount of vertical bone gain. Case presentation: Case 1: Female 62-year-old patient undergoing graftless maxillary sinus lift with simultaneous dental implantation by lateral window technique due to a reduced bone height of 5.24 mm. After a 12-month tomographic follow-up period subsequent to prosthetic loading, a 10.2 mm vertical bone height was achieved, resulting in 4.96 mm vertical bone gain. Case 2: Female 48-year-old patient undergoing graftless maxillary sinus lift with simultaneous dental implantation by transalveolar technique using a piezoelectric generator due to a reduced bone height of 8.33 mm. After a 4-month radiographic follow-up period, before prosthetic loading, an 11.55 mm vertical bone height was achieved, resulting in 3.19 mm vertical bone gain. Conclusions: According to these two case reports, graftless maxillary sinus lifting with simultaneous dental implantation is associated to reduced surgical morbidity, a lesser probability of infectious processes and lower surgical costs. It may therefore be considered to be a surgical alternative for implant placement in the posterior maxilla due to vertical bone deficiencies, regardless of the technique used (lateral or transalveolar(AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Implantação Dentária/métodos , Levantamento do Assoalho do Seio Maxilar/métodos , Assistência ao Convalescente , Custos e Análise de Custo
2.
West China Journal of Stomatology ; (6): 86-89, 2020.
Artigo em Chinês | WPRIM | ID: wpr-781340

RESUMO

Vertical bone insufficiency in the maxillary posterior teeth is a common clinical situation. At present, the bone insufficiency in the maxillary posterior teeth is mainly overcome by bone grafting through maxillary sinus floor elevation. Compared with traditional axial implantation, tilted implantation can better avoid bone grafting, reduce complications, shorten the treatment cycle, reduce the treatment cost for patients, and gradually be promoted in clinical settings. This article reviews the concept, biomechanics, clinical evaluation, and digital trend of tilted implants of maxillary posterior teeth.


Assuntos
Humanos , Implantação Dentária Endóssea , Implantes Dentários , Planejamento de Prótese Dentária , Maxila , Seio Maxilar , Levantamento do Assoalho do Seio Maxilar
3.
Rev. ADM ; 73(6): 286-290, nov.-dic. 2016. ilus, tab
Artigo em Espanhol | LILACS | ID: biblio-869338

RESUMO

Introducción: El conocimiento de la anatomía de la región maxilar debe ser esencial para el cirujano antes de realizar levantamiento del seno maxilar para evitar complicaciones. La arteria alveolo antral forma una anastomosis intraósea con la arteria infraorbitaria a nivel de la pared antero lateral del seno maxilar, aproximadamente a una distancia de entre 18.9 y 19.6 mm desde el reborde alveolar maxilar. La arteria alveolo antral es la encargada de dar vascularidad a la membrana mucosa del seno maxilar, pared antero lateral del seno y tejido perióstico subyacente.Objetivo: Describir y establecer la frecuencia, diámetro y localización dela anastomosis entre la arteria infraorbitaria y la arteria alveolar posterior superior, llamada arteria alveolo antral y su relación con la cresta ósea alveolar en una población mexicana. Material y métodos: Se realizaun protocolo de estudio observacional, descriptivo y transversal en una población de 1,116 pacientes derecho habientes del Instituto de Seguridad Social y Servicios para los Trabajadores del Estado (ISSSTE), en el oriente de la Ciudad de México, mediante la revisión de estudios de tomografía volumétrica computarizada. Resultados: Se encuentra la anastomosis arterial en el 90 por ciento de los estudios revisados, correspondiente a 1,005 estudios de tomografía.


Introduction: In order to avoid complications, it is essential for surgeonsto have a detailed knowledge of the anatomy of the superior maxillarybone prior to performing any sinus lift procedure. The alveolarantral artery forms an intraosseous anastomosis with the infraorbitalartery at the level of the anterolateral wall of the maxillary antrum at anapproximate distance of between 18.9 and 19.6 mm from the maxillaryalveolar ridge. The alveolar antral artery is responsible for providingvascularity to the mucous membrane of the maxillary sinus, the anteriorlateral wall of the sinus, and the underlying periosteal tissue. Objective:To analyze and establish the frequency, diameter, and locationof the anastomosis between the infraorbital artery and the posteriorsuperior alveolar artery known as the alveolar antral artery, and itsrelationship to the alveolar bone crest in a Mexican cohort. Materialand methods. We conducted a cross-sectional observational descriptivestudy involving a cohort comprised of 1,116 patients of the Institute forSocial Security and Services for State Workers (ISSSTE) on the eastside of Mexico City. The study consisted of a review of CBCT studies.Results: The arterial anastomosis was found in 90% of the 1,005 CBCTstudies reviewed, based on which the following values were determinedfor the distance between the alveolar ridge and the canal of the alveolarantral artery: for the fi rst premolar, 18.24 mm; second premolar,17.35 mm; fi rst molar, 16.96 mm, and for the second molar, 18.75 mm.Conclusions: We established the average measurements for the locationof the vascular bundle in question and the measurements neededto safeguard it along its course, which is important for the preservationand osseointegration of bone grafts placed during maxillary sinus liftprocedures, thus providing a margin of safety not previously reportedin the literature for a Mexican cohort.


Assuntos
Humanos , Masculino , Feminino , Artéria Maxilar/anatomia & histologia , Levantamento do Assoalho do Seio Maxilar/métodos , Artéria Maxilar , Tomografia Computadorizada de Feixe Cônico/métodos , Anastomose Arteriovenosa/anatomia & histologia , Estudos Transversais , Epidemiologia Descritiva , Levantamento do Assoalho do Seio Maxilar/estatística & dados numéricos , México , Estudo Observacional , Interpretação Estatística de Dados
4.
Int. j. morphol ; 34(3): 1069-1075, Sept. 2016. ilus
Artigo em Inglês | LILACS | ID: biblio-828987

RESUMO

The aim of this study is to compare the bone formation in maxillary sinus lift with an autogenous bone graft in histological evaluation at 2 or 6 months. A comparative study was designed where 10 patients with missing teeth bilaterally in the posterior zone of the maxilla were selected. Patients received a particulate autogenous bone graft under the same surgical conditions, selecting a site to collect a biopsy and histological study at two months and another at six months postoperatively. Histomorphometry was performed and were used Kolmogorov-Smirnov test, student's t-test and Spearman's correlation coefficient, considering a value of p<0.05. Differences were observed in inflammatory infiltrate and vascularization characteristics; however, the group analyzed at two months presented 38.12% ± 6.64 % of mineralized tissue, whereas the group studied at 6 months presented an average of 38.45 ± 9.27 %. There were no statistical differences between the groups. It is concluded that the bone formation may be similar in intrasinus particulate autogenous bone grafts in evaluations at two or six months; under these conditions, early installation of implants is viable.


El objetivo de este estudio es comparar la formación ósea en técnicas de elevación de seno maxilar utilizando injerto óseo autógeno en evaluaciónhistológica a las 2 y 6 meses. Un estudio comparativo fue diseñado donde 10 pacientes con dientes perdidos de forma bilateral en el sector posterior de maxila fueron incluidos. Los pacientes recibieron injerto óseo particulado bajo las mismas condiciones quirúrgicas, seleccionando el sitio para tomar la biopsia y el análisis histológico respectivo a los 2 meses en un lado y 6 meses en el lado contralateral. La histomorfometría se realizó y fueron utilizadas la prueba de Kolmogorov-Smirnov, la prueba t de student y la prueba de Spearman, considerando un valor de p<0,05. Fueron observadas diferencias en infiltrado inflamatorio y características de vascularización; sin embargo, los grupos analizados a los dos meses presentaron 38.12% ± 6.64% de tejido mineralizado, mientras que los grupos de estudio a los 6 meses presentaron en promedio 38.45 ± 9.27%. No se observo diferencias significativas entre los grupos. Se concluye que la formación ósea puede ser similar en elevaciones de seno maxila realizada con hueso autógeno particulado a los dos o seis meses; en estas condiciones, la instalación temprana de implantes puede ser viable.


Assuntos
Humanos , Autoenxertos , Regeneração Óssea/fisiologia , Seio Maxilar/cirurgia , Levantamento do Assoalho do Seio Maxilar/métodos , Seio Maxilar/patologia , Seio Maxilar/fisiologia , Fatores de Tempo
5.
Dent. press implantol ; 9(1): 42-56, Jan.-Mar.2015.
Artigo em Português | LILACS | ID: lil-777966

RESUMO

A restauração implantossuportada bem-sucedida passa por um planejamento prévio, abordando as variáveis clínicas específicas para cada caso. Maxilas severamente atróficas representam um desafio para reabilitação com próteses fixas, haja vista que o paciente não possui a quantidade mínima necessária de altura óssea na região posterior para a instalação de implantes no local preconizado pelo enceramento diagnóstico. Objetivo: o presente estudo tem como objetivo relatar um caso de reabilitação bucal com prótese total implantossuportada por meio de elevação bilateral de seio maxilar, utilizando 100% de biomaterial aloplástico para posterior instalação de implantes dentários, com cinco anos de follow-up clínico e tomográfico. Métodos: a utilização de um substituto ósseo sintético (fosfato de cálcio bifásico) elimina qualquer risco potencial de transmissão de microrganismos e reduz o número de sítios cirúrgicos, haja vista que dispensa a coleta de osso autógeno para enxertia. Como a altura óssea subantral residual chegava a ser inferior a 1mm, um procedimento de elevação de seio maxilar bilateral, por meio da técnica da janela lateral, foi planejado para oito meses antes da instalação de oito implantes, que serviriam de retenção para uma prótese total implantossuportada, a ser instalada 60 dias após a cirurgia de colocação dos implantes. Conclusão: há evidências, tanto na literatura científica quanto no caso relatado,que de que a utilização de 100% biomaterial aloplástico para aumento vertical de maxila atrófica por meio de levantamento do assoalho do seio maxilar consiste em uma alternativa ao uso do enxerto autógeno, tornando-se uma solução eficiente e de menor morbidade...


Successful implant rehabilitation relies on previous planning that addresses thespecific clinical variables of each case. Fixed-prosthesis rehabilitation of severely atrophic maxilla is a challenge, given that patients do not present with minimal posterior bone height required for implant placement at the site recommended by diagnostic wax-up. Objective: The present study aims at reporting a case of implant-supported complete denture oral rehabilitation performed by means of bilateral maxillary sinus lift with 100% alloplastic biomaterial for subsequent implant placement, with a 5-year clinicaland tomographic follow-up. Methods: The use of synthetic bone substitutes (biphasic calcium phosphate) not only eliminates potential risks of contamination, but also reduces the number of surgical sites, given that it does not require autogenous bone to be harvested for grafting. Subantral residual bone height was less than 1 mm, therefore, bilateral maxillary sinus lift carried out by means of the lateral window approach was planned to be performed eight months before placement of eight implants. These implants would give support to a complete denture installed 60 days after implant placement surgery. Conclusion:Both scientific literature and the case reported herein evince that the use of 100% alloplastic biomaterialfor vertical augmentation of atrophic maxilla by means of maxillary sinus lift is an efficient alternative to replace autograft due to presenting lower morbidity rates...


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Prótese Dentária Fixada por Implante , Maxila/anormalidades , Seio Maxilar/cirurgia , Prótese Total Superior , Radiografia Panorâmica
6.
Journal of Practical Stomatology ; (6): 831-834, 2014.
Artigo em Chinês | WPRIM | ID: wpr-475206

RESUMO

Objective:To compare the maxillary sinus mucosa's stress distribution when elevated by three lift materials.Methods:Three Finite element models of maxillary sinus mucosa with 0.3 mm thickness elevated by implant,grafting autogenous cancellous bone and hydroxyapatite respectively were established in the specific units.ANSYS finite element analysis software was used to evaluate maxillary sinus mucosa deformation by the simulated closed sinus lift surgery.Differences of Von Mises stress values of mucosa surface were calculated when maxillary sinus mucosa lift height was increased from 1 mm to 5 mm according to the a large deformation theory. Results:The Von Mises stress values on membrane surface elevated by implant,grafting autogenous cancellous bone and hydroxyapa-tite bone substitute materials showed no difference within 5 mm elevation.Conclusion:Closed maxillary sinus floor lifting operation with implant elevating the maxillary sinus membrane directly is a simple and minimally invasive way for sinus floor elevation.

7.
Univ. odontol ; 30(67): 27-55, jul.-dic. 2012.
Artigo em Espanhol | LILACS | ID: lil-673826

RESUMO

La elevación de piso de seno maxilar es uno de los procedimientos preimplantares másrealizados en la práctica odontológica. El objetivo de este artículo es reportar la evidenciadisponible sobre las implicaciones anatómicas y clínicas del procedimiento de elevación depiso para toma de decisiones clínicas. A partir de una búsqueda en la base Pubmed, se hizouna revisión de literatura de artículos publicados en revistas de odontología y otorrinolaringologíaentre 1980 y el 2011. La literatura encontrada se organizó en los siguientes temas:anatomía del seno maxilar, patología del seno maxilar, técnica de elevación de piso deseno maxilar y complicaciones por elevación de piso de seno maxilar. Con relación a otrosprocedimientos con la misma indicación, la elevación de seno maxilar es el más reportadoy ofrece los resultados más predecibles. Hay pocos estudios que reportan complicacionespor elevación de piso de seno maxilar y su manejo...


Maxillary sinus augmentation is one of most commonly performed clinical dental proceduresprevious to implant treatment. The aim of this article is to report the available literatureabout anatomical and clinical implications of the maxillary sinus lift procedure to supportclinical decisions. A literature review of articles published between 1980 and 2011 in dentaland otolaryngology journals was carried out at the Pubmed database. Found referenceswere grouped in the following themes: maxillary sinus anatomy, maxillary sinus pathology,maxillary sinus augmentation technique, and complications for maxillary sinus augmentation.Among other procedures performed for similar conditions, maxillary sinus augmentationis the most reported and the one that provides the most predictable results. Only afew studies report complications and management problems with the maxillary sinus lift...


Assuntos
Cirurgia Bucal , Seio Maxilar/anatomia & histologia , Seio Maxilar/cirurgia
8.
Int. j. odontostomatol. (Print) ; 6(1): 19-26, Apr. 2012.
Artigo em Inglês | LILACS | ID: lil-639729

RESUMO

Homologous bone has been considered a viable alternative in bone reconstruction in the posterior maxillary area to perform surgeries for the maxillary sinus lifting. The aim of this study was to perform a literature review about the advantages and risks inherent in the use of homologous bone graft coming from the tissue bank to perform the surgery for maxillary sinus lifting. A literature review was conducted on MEDLINE (PubMed), Scielo, Scopus and Lilacs, and based on manuscripts and books published from 1980 to 2010. After reading the titles and abstracts of the manuscripts, 69 studies were selected because of their correlations with the aim of the current study. The use of homologous grafts from bone banks showed greater osteogenic potential and a slow remodeling least compared to other grafts to increase the volume of the posterior bone of the maxilla in surgery for maxillary sinus lifting.


De hueso homólogo se ha considerado una alternativa viable en la reconstrucción ósea en la zona posterior del maxilar para cirugías de la elevación del seno maxilar. El objetivo de este estudio fue el desempeño de una revisión de la literatura sobre las ventajas y riesgos inherentes en el uso de injerto de hueso homólogo proveniente del banco de tejidos para la cirugía de elevación del seno maxilar. Una revisión de la literatura se hizo en MEDLINE (PubMed), Scielo, Scopus y Lilacs, y en base a manuscritos y libros publicados desde 1980 hasta 2010. Después de leer los títulos y resúmenes de los manuscritos, 69 estudios fueron seleccionados debido a su correlación con el objetivo de este estudio. El uso de injertos homólogos de los bancos de hueso mostró un mayor potencial osteogénico y una remodelación lento por lo menos en comparación con otros injertos para aumentar el volumen del hueso posterior del maxilar superior en la cirugía de elevación del seno maxilar.


Assuntos
Humanos , Levantamento do Assoalho do Seio Maxilar , Seio Maxilar/cirurgia , Transplante Homólogo
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