Assuntos
Autoenxertos/transplante , Transplante Ósseo/métodos , Implantes Dentários para Um Único Dente , Carga Imediata em Implante Dentário/métodos , Abscesso Periodontal/cirurgia , Adulto , Colágeno , Coroas , Projeto do Implante Dentário-Pivô , Planejamento de Prótese Dentária , Feminino , Seguimentos , Humanos , Incisivo/lesões , Incisivo/cirurgia , Membranas Artificiais , Retalhos Cirúrgicos/cirurgia , Extração Dentária , Fraturas dos Dentes/cirurgia , Raiz Dentária/lesões , Raiz Dentária/cirurgia , Alvéolo Dental/cirurgiaRESUMO
Transcrestal sinus membrane elevation is a surgical procedure performed to increase the bone volume in the maxillary sinus cavity. Because of visual limitations, the potential for maxillary sinus membrane perforations may be greater than with the lateral approach technique. The aim of this study was to macroscopically investigate ex vivo the occurrence of sinus membrane perforation during surgery using 3 transcrestal sinus floor elevation methods. Twenty fresh human cadaver heads, with 40 intact sinuses, were used for simultaneous sinus membrane elevation, placement of graft material, and dental implants. Real-time sinus endoscopy, periapical digital radiographs, and cone-beam computerized tomography (CBCT) images were subsequently used to evaluate the outcome of each surgical procedure. Perforation rates for each of the 3 techniques were then compared using a significance level of P < .05. No statistically significant differences in the perforation rate (P = .79) were found among the 3 surgical techniques. Although the sinus endoscope noted a higher frequency of perforations at the time of implant placement as compared with instrumentation or graft insertion, the difference was not statistically significant (P = .04). The CBCT readings were judged to be more accurate for identifying evidence of sinus perforations than the periapical radiographs when compared with the direct visualization with the endoscope. This pilot study demonstrated that a sinus membrane perforation can occur at any time during the sinus lift procedure, independent of the surgical method used.
Assuntos
Endoscopia/efeitos adversos , Complicações Intraoperatórias , Seio Maxilar/lesões , Mucosa Nasal/lesões , Levantamento do Assoalho do Seio Maxilar/efeitos adversos , Adulto , Idoso , Substitutos Ósseos/uso terapêutico , Cadáver , Fosfatos de Cálcio/uso terapêutico , Corantes , Tomografia Computadorizada de Feixe Cônico/métodos , Implantes Dentários , Durapatita/uso terapêutico , Endoscópios/efeitos adversos , Endoscopia/métodos , Humanos , Complicações Intraoperatórias/diagnóstico por imagem , Complicações Intraoperatórias/patologia , Seio Maxilar/diagnóstico por imagem , Azul de Metileno , Pessoa de Meia-Idade , Mucosa Nasal/diagnóstico por imagem , Osteotomia/efeitos adversos , Osteotomia/instrumentação , Projetos Piloto , Radiografia Interproximal/métodos , Radiografia Dentária Digital/métodos , Levantamento do Assoalho do Seio Maxilar/métodos , Resultado do Tratamento , Cirurgia VídeoassistidaRESUMO
This clinical report presents a simplified surgical procedure for accessing the maxillary sinus antrum via lateral and crestal approaches, which reduces the potential for sinus membrane perforation and subsequent complications when graft materials and dental implants are placed into the sinus. Due to visual limitations, perforations and associated complications can jeopardize the success rate of the graft and the implants. While there is a lack of clinical data, clinical observations suggest that the procedure, described by the authors as lateral/crestal bone planing antrostomy, can reduce the possibility of perforation of the maxillary sinus membrane during the lateral and crestal approaches to the grafting of the maxillary sinus floor. The technique involves the use of specially designed rotary instruments that plane away the bone in thinner layers, with less chance of excess bone removal and membrane perforation.