A review of rare complications of maxillary sinus floor augmentation

Maxillary sinus floor augmentation (MSFA) is an essential procedure for implant installation in the posterior maxillary area with vertical alveolar bone deficiency. For the past several decades, MSFA has been refined in terms of surgical methods along with technical progress, accumulation of clinical studies, and development of graft materials and surgical instruments. Although some complications in MSFA are inevitable in clinical situations, management of those complications in MSFA has been well established thanks to many clinicians and researchers. Nevertheless, some rare complications may arise and can result in fatal results. Therefore, clinicians should be well aware of such rare situations and complications associated with MSFA. In this review, the authors present several rare complications regarding MSFA, along with corresponding management strategies through a thorough review of the literature.

Full mouth rehabilitation of fully edentulous patient with implant-supported fixed prosthesis preceding bone graft: A case report / 대한치과보철학회지

Prosthetic treatment using implants in fully edentulous patients includes implant-supported fixed prosthesis, implant hybrid prosthesis, implant retained- or supported-overdenture and implant supported fixed prosthesis has advantages such as psychological stability, pronunciation. If an implant supported fixed prosthesis is planned, the implants should be placed in consideration of pronunciation, esthetics, and oral hygiene. For this, clinical and radiological diagnosis is indispensable. When placing the prosthetic driven implant at the site determined from the diagnosis, a sufficient amount of alveolar bone and soft tissue support are required. If these requirements found to be insufficient, a wide range of bone grafting should be performed in advance. In this case, a fully edentulous patient with severe alveolar bone resorption due to periodontal disease was treated with a full mouth rehabilitation using implant-supported fixed prosthesis preceding maxillary sinus graft and alveolar bone augmentation. We report this patient were satisfied with esthetic and function.

Estudo retrospectivo comparativo com dois biomateriais diferentes para enxerto sinusal maxilar ­ cinco anos de acompanhamento / Comparative retrospective study on two different biomaterials for sinus grafting ­ 5 years of follow-up

Objetivo: avaliar o índice de sobrevida de implantes osseointegráveis instalados em maxilas submetidas previamente ao enxerto sinusal e à remodelação óssea, ocorrida após o período de reparo do enxerto. Material e métodos: foram selecionados 12 pacientes que receberam implantes osseointegráveis em maxilares submetidos à elevação de membrana sinusal, seguido da aplicação de substituto ósseo heterógeno composto de origem bovina (GenMix, Baumer, Mogi Mirim, Brasil) ou do biomaterial sintético à base de fosfato ß-tricálcio (Cerasorb, Curasan AG, Kleinostheim, Alemanha). Foi avaliado o índice de sobrevida dos implantes e o nível da remodelação óssea vertical. Foram digitalizadas radiografi as panorâmicas, e mensuradas a extensão linear vertical do remanescente ósseo (T0) e a extensão linear vertical, após o período de incorporação do enxerto ósseo (T1) e após período de osseointegração do implante (T2). Resultados: o índice de sobrevida dos implantes no período de 60 a 84 meses foi de 90% nos seios maxilares, preenchidos por substituto ósseo heterógeno composto de origem bovina. Nos seios preenchidos por biomaterial sintético à base de fosfato ß-tricálcio, o índice de sobrevida dos implantes no período de 60 a 76 meses foi de 88,89%. Foram perdidos dois implantes, um em seio preenchido por osso heterógeno composto e o outro em seio preenchido por fosfato ß-tricálcio. O nível de remodelação óssea foi de 3,29 mm e 1,6 mm, respectivamente, para o osso heterógeno composto de origem bovina, e para o biomaterial sintético a base de fosfato ß-tricálcio. Não houve diferenças estatisticamente signifi cativas entre o nível de remodelação dos dois biomateriais. Conclusão: diante dos resultados obtidos, concluiu-se que ambos os materiais mostraram-se adequados para ossificação intrasinusal, por meio da técnica de elevação da membrana sinusal.

Objective: to evaluate the survival rate of osseointegrated implants placed on maxillary arches submitted to sinus graftings and also the bone remodeling after the graft repair period. Material and methods: twelve patients were selected to receive maxillary osseointegrated implants after the use of a bovine composite bone (GenMix, Baumer, Mogi Mirim, Brazil) or a synthetic ß-tricalcium phosphate biomaterial (Cerasorb, Curasan AG, Kleinostheim, Germany). The implant survival and bone remodeling rates were evaluated on digitized panoramic radiographs being measured the linear extension of the remaining bone (T0), the vertical linear extension after graft incorporation (T1), and after the implant osseointegration period (T2). Results: the implant survival rates were 90% after 60-84 months (bovine composite bone) and 88.89% after 60-76 months (ß-tricalcium phosphate) of follow-ups. Two implants were lost (1 for each group). The bone remodeling values were 3.29 mm and 1.6 mm for the composite bovine bone and the ß-tricalcium phosphate materials. No statistically signifi cant differences were observed between these materials regarding the bone remodeling process. Conclusion: within the results of this study, it can be concluded that both materials are adequate for intrasinus ossification in the sinus lifting membrane technique.

Clinical Study on Outfracture Osteotomy Sinus Graft

A lateral approach to the maxillary sinus for simultaneous extraction of an ankylosed maxillary molar and sinus graft: a case report

Ankylosed tooth is defined as 'the discontinuance of normal passive tooth eruption without any mechanical barrier'. Ankylosed tooth treatment is a challenge to dental clinicians. In treatment of maxillary molar ankylosis cases there are risks of oro-antral fistula, displacement of root fragments into the maxillary sinus, as well as the necessity for providing additional sinus bone augmentation for future implant placement. In this study, we suggested a new technique using a piezoelectric device and a lateral side approach to the maxillary sinus leading to the simultaneous removal of the ankylosed maxillary molar and sinus grafting for the purpose of implant site development.

Clinical Comparative Study for Maxillary Sinus Augmentation Using Deproteinized Bovine Bone Mineral and Mineralized Allograft

SINUS GRAFT AND VERTICAL AUGMENTATION OF MAXILLARY POSTERIOR ALVEOLAR RIDGE USING MANDIBULAR RAMAL BLOCK BONE GRAFT

Clinical Study on Implant Survival and Graft Resorption Rate After Maxillary Sinus Bone Grafting

Clinical Investigation on the Feasibility of Outfracture Osteotomy Sinus Graft Technique

PURPOSE: The purpose of this study was to evaluate the feasibility of the outfracture osteotomy sinus graft technique with the evaluation of 5-year survival rate of the implants placed in the atrophic edentulous posterior maxillary area. MATERIALS AND METHODS: One hundred and thirteen cases of 96 patients who visited our center from Aug 2004 to July 2009 and were diagnosed as atrophic edentulous maxillary alveolar ridge, were selected and underwent augmentation sinus surgery with outfracture osteotomy technique. Feasibility of the outfracture osteotomy technique was investigated with clinical and radiographic evaluation to assess the survival rate of the total dental implants in augmentation sinus surgery of this new kind. Total fixture number available in follow-up period was 179, in which the lost 10 patients were excluded out of 96 patients. RESULTS: Five-year cumulative survival rate was 97.2% with 5 failures of total 179 fixtures. The average follow-up period was 29 and a half months, with the minimum and maximum follow-up periods of 4 months 21 days and 59 months 14 days, respectively. CONCLUSION: Traditional infracture technique is a popular method for an augmentation sinus surgery. The authors modified this classical method by outfracturing and readapting the bony window after sinus graft, with excellent treatment results evidenced by high survival rate of 97.2% (174 out of 179 fixtures), which proves the feasibility of the newly-designed outfracture osteotomy sinus graft technique.

Resonance Frequency Analysis in Non-Submerged, Internal Type Implant with Sinus Augmentation Using Deproteinized Bovine Bone Mineral

Effect of maxillary sinus graft on the survival of endosseous implants: A 10-year retrospective study / 대한치주과학회지

PURPOSE: The aim of this study was to determine the survival rates of implants placed in grafted maxillary sinuses and compare the results obtained with graft materials, implant surfaces and timing of implant placement. MATERIALS AND METHODS: Between January 1996 and December 2005, 391 implants were placed in 161 patients who underwent sinus grafting treatment simultaneously or separately at Ewha Womans University Hospital. According to inclusion criteria, 272 implants were placed in 102 patients with 112 sinus grafts (30 females, 72 males), aged 26 to 88 years (mean age 49.0+/-9.7). The follow-up period ranged from 12 to 134 months (mean F/U 47+/-32). Survival rates were evaluated according to graft material, implant surface and timing of implant placement. The Kaplan-Meier procedure and the log rank (Mantel-Cox) test were used to estimate survival rates and test for equality of survival rates between different groups of patients. RESULTS: Ten-year cumulative survival rate for implants placed in the grafted sinuses was 90.1%. The survival rates for autogenous bone, combination and bone substitutes were 94.6%, 85.9% and 100%, respectively (p > 0.05). According to implant surface, survival rates were 84.8% in machined group and 97.5% in rough group (p 0.05). CONCLUSION: Ten-year cumulative survival rate for implants placed in the grafted sinuses was 90.1%. Rough-surfaced implants have a higher survival rate than machined-surfaced implants when placed in grafted sinuses (p < 0.05).

Biodispositivo confeccionado em osso homógeno para colocação imediata de implantes em região de seio maxilar: relato de caso: apresentação da técnica / Biodevice made with homogene bone for immediate placement of implants in region of maxilary sinus: related of case

Este artigo tem como objetivo descrever a técnica cirúrgica e apresentar um caso clínico de enxertia óssea em seio maxilar, com colocação concomitante de um implante endósseo metálico ancorado em um biodispositvo, confeccionado em osso homógeno, proveniente de banco de ossos, conforme descrito por Valcanaia et al (2006).

This article aim to describe the surgical technique and to show a clinical case of bone graft in posterior maxilla, with concomitant placement of one implant anchored in a biodispositvo, made in homogene bone, coming of bank of bones, as described by Valcanaia et al (2006).

Maxillary Sinus Augmentation Using Macroporous Biphasic Calcium Phosphate (MBCP(TM)): Three Case Report With Histologic Evaluation / 대한치주과학회지

BACKGROUND: Several bone grafting materials have been used in sinus augmentation procedures. Macroporous Biphasic Calcium Phosphate(MBCP(TM)) consists of the mixture of 60% HA and 40% beta-TCP. Therefore, it can provide good scaffold for the new bone to grow owing to HA, in the other hand, it can have bioactivity for bone remodeling owing to beta-TCP. The purpose of this study was to evaluate bone formation following maxillary sinus augmentation using MBCP(TM) by means of histologic analysis. MATERIAL AND METHOD: MBCP(TM) was placed as a primary bone substitute for maxillary sinus augmentation. Three patients were selected after evalaution of their medical dental examination. MBCP(TM) only, MBCP(TM) combined with Irradicated cancellous bone and MBCP(TM) combined with autogenous bone were used for each patient. After about eight months, bone biopsies were harvested for histologic evaluation and fixtures installed. RESULTS: Eight months after surgery we observed new vital bone surrounding MBCP(TM) particle and the amount of new bone was about 30% even though there were discrepancies between specimens. This case report documents that MBCP(TM) when used as a grafting material for sinus floor augmentation whether combined other bone graft material or not, may lead to the predictable results for dental implants on posterior maxillary area with insufficient vertical height for fixture installation.