A clinical study of dental implantation simultaneously with maxillary sinus augmentation in the presents of antral pseudocyst / 实用口腔医学杂志

17 patients with maxillary antral pseudocyst underwent side wall fenestration with simultaneous implantation of 38 implants and the upper denture repair, follow-up observation was conducted after repair for 6 to 24 months (an average of 11. 4 months) . Good osseointegration was observed in all cases. No implant shedding or bone resorption occurred during the follow-up period, and the antrol pseudo cyst disappeared or decreased. Dental implantation simulataneously with maxillary sinus augmentation is effective in the management of maxillary implantation for the cases with antrol pseudocyst.

Histomorphometric study of rabbit's maxillary sinus augmentation with various graft materials / 대한해부학회지

The purpose of this animal study is to evaluate, by histomorphometric analysis, bone regeneration in rabbit's maxillary sinuses with blood clots alone, Bio-Oss, β-tricalcium phosphate (β-TCP), and demineralized tooth dentin (DTD) grafting. Bilateral sinus augmentation procedures were performed in 18 adult male rabbits. Rectangular replaceable bony windows were made with a piezoelectric thin saw insert. In the group 1, blood clots were filled; group 2, anorganic bovine graft (Bio-Oss) was grafted; group 3, β-TCP was grafted; group 4, DTD was grafted, and covered by replaceable bony windows. Animals were sacrificed at 2, 4, and 8 weeks after surgical procedure. The augmented sinuses were evaluated by histomorphometric analysis using hematoxylin and eosin and Masson's trichrome stains. Histologically, new bone formation was revealed along the elevated sinus membrane and all graft materials. The new bone area of the group 2 was significantly greater than the group 1, and of the group 3 was significantly greater than the group 2, and of the group 4 was significantly greater than the group 3 at 8 weeks with P < 0.05. The bone marrow area of group 1 was significantly greater than other groups at 8 weeks. The DTD area was significantly lesser than Bio-Oss or β-TCP particles area at 8 weeks. This present study suggests that DTD can be effective graft materials for bone regeneration of the maxillary sinus augmentation.

Levantamento de seio maxilar por acesso crestal e pressão hidrodinâmica com instalação imediata de implantes / Maxillary sinus lifting with crestal access and hydrodinamic pressure for immediate implant placement

A instalação de implantes dentários na região posterior de maxila pode ser dificultada pela diminuição da quantidade óssea e pelo aumento do seio maxilar. Este artigo relata um caso clínico de instalação de implantes nessa região, com extensa reabsorção óssea e pneumatização do seio maxilar. O paciente foi submetido a um procedimento de elevação da membrana do seio utilizando um sistema de pressão hidrodinâmico, seguido pelo preenchimento com osso xenógeno liofilizado e instalação imediata de implantes. Após um período de seis meses de cicatrização, verificou-se que esse sistema permitiu, de maneira segura e atraumática, a instalação de implantes dentários, preservando o espaço sinusal.

The placement of dental implants in the posterior maxilla may be impaired by the reduced bone quantity and increased maxillary sinus volume. This article reports a case of implant placement with large bone resorption and pneumatization of the maxillary sinus. The patient was submitted to a sinus lifting membrane procedure using a hydrodynamic pressure system followed by filling with lyophilized xenogeneic bone and immediate implant placement. After six months of healing, the clinical results demonstrated that this system provides safe and atraumatic dental implant placement while preserving sinus space.

Elevación de piso de seno maxilar: consideraciones anatómicas y clínicas: revisión de la literatura / Maxillary sinus augmentation: anatomic and clinic considerations: literature review

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...

Factors Affecting Survival of Maxillary Sinus Augmented Implants

Maxillary Sinus Augmentation Using Autogenous Teeth: Preliminary Report

New bone formation using fibrin rich block with concentrated growth factors in maxillary sinus augmentation

INTRODUCTION: This study examined the predictability of new bone formation in the pneumatized maxillary sinus using only fibrin-rich blocks with concentrated growth factors as an alternative to bone grafts. MATERIALS AND METHODS: Maxillary sinus augmentation was performed in thirty-three patients with a deficient alveolar bone height (mean 3.9 mm). All patients were treated consecutively with sinus membrane elevation via the lateral window approach and panoramic radiograms and cone-beam computed tomograms were taken to evaluate the remaining bone height and the new bone formation in the maxillary sinus, before and after surgery. Four biopsy specimens were taken at the time of implant consolidation (after an average of five months healing) and were stained by H & E and Trichrome staining. RESULTS: None of the patients had postoperative complications during implant consolidation. After an average of 5 months since sinus augmentation, newly formed bone was observed in all cases by a radiographic evaluation. In 4 biopsy samples, newly formed bone was observed along the floor of the replaced bony window. The osteoblast lining and well distinguished Osteocytes in the lacunas were observed in the newly formed bone. Of the 74 implants (4 different surfaced implants - resorbable blast media-surfaced (RBM), Hydroxyapatite (HA) coated, acid-etched, sintered porous-surfaced implant) placed, one RBM implant failed. The success rate was 98.6% after a mean of 15 months. DISCUSSION: These results suggest that maxillary sinus augmentation using fibrin rich block with concentrated growth factors is a successful and predictable technique.

Implant Survival Rates of Maxillary Sinus Augmentation: a Literature Review of Graft Materials

A Retrospective study of the Cumulative Survival Rate and change of peri-implant marginal bone around implants associated with maxillary sinus augmentation / 대한치과보철학회지

STATEMENT OF PROBLEM: Insertion of endosseous implants in the atrophic maxilla is often complicated because of lack of supporting bone. Augmentation of the floor of the maxillary sinus with autogenous bone & bone substitute graft has been proven to be a reliable treatment modality, at least in the short term. The aim of this study is to evaluate the factors of implant survival rate associated with maxillary sinus lift with grafts. MATERIAL AND METHODS: The sinus floor was augmented with bone grafts derived from modified Caldwell-luctechnique (71 subject, 93 sinus, 180 implants), the autogenous bone or autogenous + Bio-oss. Before implant installation the width and height of the alveolar crest were increased in the first stage procedure in 10 patients while in the other 61 patients augmentation and implant installation could be performed simultaneously width and height of the alveolar crest > 4 mm) or delayed installation. RESULTS: In all case bone volume was sufficients for implant insertion. 14 of 180 inserted implants were lost during follow up and the healing period Patient received implant supported overdenture (5 patients) or fixed bridge (62 patients). CONCLUSION: Within the limit of the result of this study, we conclude that bone grafting of the floor of the maxillary sinus floor with bone for the insertion of implants might be a reliable treatment modality and the autogenous bone graft and delayed installation method might be the factors for good results.

A Double Layers Technique for Maxillary Sinus Augmentation with Demineralized and Mineralized Bone Graft Materials

Long-term evaluation of implant placed in sites grafed by lateral window approach on maxillary sinus; a 10-year retrospective study / 대한치주과학회지

Between 1997 May and 2007 May, One hundred and seventeen patients were treated. There were 129 cases of sinus elevation using a lateral window opening procedure and 258 implants placed simultaneously or delayed. The cumulative survival rate of the implants calculated. The implants were evaluated according to surgical site, quality and quantity of bone, graft material, membrane used, the length and diameter of the implant and complications. 1. The 10-year cumulative survival rate of the implants by sinus augmentation using lateral window approach was 96.90%. 2. There was no difference in the survival rate between the implant placed simultaneously with sinus elevation (one stage) and the procedure performed in the delayed procedure (two stage). 3. There was no difference in the survival rate according to the type and amount of graft materials. 4. There was no difference in the survival rate according to the implant site, bone quality and quantity. 5. There was no difference in the survival rate when the CollaTape(R) or Gore-Tex was placed in the window of the lateral wall. 6. There was no difference in the survival rate of the implant length and diameter. 7. The survival rate was as low as 75.00% when there were more than two complications. Implant placement with sinus augmentation using the lateral window approach is a predictable treatment method. Although the vertical height of residual ridge is insufficient and the quality of bone is poor, the normal survival rate of the implants would be expected if an appropriate graft material and membrane is used with greater effort to prevent complications.

A radiographic evaluation of graft height changes after maxillary sinus augmentation and placement of dental implants / 대한치주과학회지

The edentulous posterior maxilla generally provides a limited amount of bone height because of atrophy of the ridge and pneumatization of the maxillary sinus. Maxillary sinus augmentation is one of the surgical techniques for reconstruction of the severely resorbed posterior maxilla. The purpose of this study was to evaluate the survival rate of implants and the long-term changes of graft height after maxillary sinus augmentation by lateral window approach. From September 1996 to July 2004, maxillary sinus augmentation with mixed grafts of autograft, allograft, xenograft and alloplast were performed on 45 patients and 100 implants were placed. We evaluated the survival rate of implants and the changes of BL(bone length)/IL(implant length) according to time using panoramic radiographs. The survival rate of implants was 91.0% for follow-up period. The mean reduction of graft heights was 0.34mm(3.0%) for 6 months and 1.22mm(10.66%) for 3 years after augmentation. The total mean BL/IL was 1.34+/-0.21 during 5 year observation period after augmentation and decreased slightly over time. The result means that graft materials were stable above the implant apex. BL/ILs of 1 stage procedure were significantly decreased at 1-2 year, 3-4 year after augmentation and no statistically significant changes were observed in those of 2 stage procedure. The graft materials of both procedures were stable above the implant apex. No statistically significant changes of BL/IL were observed in the grafts combined with low amount of autogenous bone or without autogenous bone. The graft materials of both groups were stable above the implant apex. The results indicated that the placement of dental implants with maxillary sinus augmentation showed predictable clinical results and the grafts combined with low amount of autogenous bone or without autogenous bone had long-term resistance to resorption in maxillary sinus.

Effects of artificial bone particles in maxillary sinus augmentation in rabbits:An experimental study / 实用口腔医学杂志

Objective: To compare JGW with autogenous bone when used as grafting material in maxillary sinus floor augmentation.Methods: A study was conducted by performing a bilateral maxillary sinus floor augmentation with autogenous bone and JGW(Jin Gu Wei,Golden Bone,bone substitute,Shanghai Xiaobo Tec.) on rabbits.The process of bone formation was evaluated during different periods by imageology and histomorphology methods.Results: At 2nd week the gray scale of JGW was very lower than that of autogenous bone,but no significant difference was found at 12th week.The number of osteoblasts decreased with the time,no significant difference was found at 12th week.The degradation of JGW was relatively faster.Conclusion: JGW is feasible in maxillary sinus floor augmentation.