The classical sinus lift procedure is a well-documented technique and Schneiderian membrane perforation is one of the most common complications. Various repairs have been developed for managing sinus membrane perforat...The classical sinus lift procedure is a well-documented technique and Schneiderian membrane perforation is one of the most common complications. Various repairs have been developed for managing sinus membrane perforations. We describe a new suture technique of Schneiderian membrane that makes it possible to complete a sinus lift procedure that otherwise might have been aborted by preventing loss of the graft in the sinus cavity and secondary complications, such as sinusitis.展开更多
The alveolar antral artery resides lateral to the maxillary sinus and can lead to complications in sinus lift surgery. Traditional approaches that decrease intraoperative bleeding into the surgical field include vesse...The alveolar antral artery resides lateral to the maxillary sinus and can lead to complications in sinus lift surgery. Traditional approaches that decrease intraoperative bleeding into the surgical field include vessel preservation using multiple bony windows or neutralizing the vessel at the surgical site. Unfortunately, these methods are technique sensitive, time intensive, and may lead to hemosinus and graft loss. The variable distance from the crest of the alveolar ridge and vessel diameter further complicates pre-operative planning. This paper discusses the anatomical features of the alveolar antral artery, techniques for clinical assessment, and current management strategies. We then describe a novel protocol to manage the alveolar antral artery in sinus lift procedures via tamponade of the vessel at a proximal site. This method is faster than those described in the literature, does not require any additional equipment or expertise, and aims to improve long-term graft predictability by decreasing the risk of sinus membrane perforation. The alveolar antral artery is an under-reported source of surgical complications and warrants further research.展开更多
The aim of the study was to analyze the histologic and ultrastructural changes after maxillary sinus augmentation with simultaneous implant placement using engineered bone graft material.In this study,calcium phosphat...The aim of the study was to analyze the histologic and ultrastructural changes after maxillary sinus augmentation with simultaneous implant placement using engineered bone graft material.In this study,calcium phosphate cement(CPC)scaffolds combined with goat bone marrow stromal cells(BMSCs)were used to fill goat sinus floor space after maxillary sinus floor elevation with simultaneous implant placement comparing with those not filled any grafted materials and used as controls.After a healing period of 3 months,the goat maxillary sinus membrane was examined using light microscopy and scanning electronic microscopy.The results showed that the connective tissue thickness and the epithelium thickness of mucosa were not statistically significant difference between two groups.The tissue engineered bone complex might be an ideal graft for the sinus floor elevation and have no influence on the sinus membrane under the histological and ultrastructural observation.展开更多
Obejctive Superantigens are potent inflammatory stimuli which derive from pathogenic microbes such as bacteria, viruses and protozoa The aim of this study was to investigate the role of superantigens on the functio...Obejctive Superantigens are potent inflammatory stimuli which derive from pathogenic microbes such as bacteria, viruses and protozoa The aim of this study was to investigate the role of superantigens on the function of rabbit maxillary sinus epithelium Methods Twenty New Zealand white rabbits were divided into 4 groups Rabbit sinus mucosa was separated under a surgical microscope and mounted in Ussing chambers to record short circuit current, conductance and permeability to horseradish peroxidase (HRP) Group A was used as normal control Group B was stimulated with an injection of superantigen into the sinus for 4 hours The sinus mucosa of Group C was stimulated by the addition of tumor necrosis factor α (TNF α) into Ussing chambers Group D sinus mucosa was stimulated by superantigen after pretreatment with anti TNF α antibody Results Superantigen evoked increases in sinus epithelial cell baseline short circuit current, conductance and permeability to HRP stimulated by the addition of TNF α into Ussing chambers These were similar to results from superantigen stimulation in vivo The effect of superantigen on sinus epithelial cells could be blocked by pretreatment with anti TNF α antibody Conclusions Superantigen affected the function of sinus epithelial cells, including the capability of epithelial defensive barrier, which might be mediated by TNF α展开更多
文摘The classical sinus lift procedure is a well-documented technique and Schneiderian membrane perforation is one of the most common complications. Various repairs have been developed for managing sinus membrane perforations. We describe a new suture technique of Schneiderian membrane that makes it possible to complete a sinus lift procedure that otherwise might have been aborted by preventing loss of the graft in the sinus cavity and secondary complications, such as sinusitis.
文摘The alveolar antral artery resides lateral to the maxillary sinus and can lead to complications in sinus lift surgery. Traditional approaches that decrease intraoperative bleeding into the surgical field include vessel preservation using multiple bony windows or neutralizing the vessel at the surgical site. Unfortunately, these methods are technique sensitive, time intensive, and may lead to hemosinus and graft loss. The variable distance from the crest of the alveolar ridge and vessel diameter further complicates pre-operative planning. This paper discusses the anatomical features of the alveolar antral artery, techniques for clinical assessment, and current management strategies. We then describe a novel protocol to manage the alveolar antral artery in sinus lift procedures via tamponade of the vessel at a proximal site. This method is faster than those described in the literature, does not require any additional equipment or expertise, and aims to improve long-term graft predictability by decreasing the risk of sinus membrane perforation. The alveolar antral artery is an under-reported source of surgical complications and warrants further research.
基金the Natural Science Foundation of Science and Technology Commission of Shanghai Municipality (Nos.09JC1411700 and S30206)the Natural Science Foundation of Shanghai Jiaotong University School of Medicine(No.09XJ21030)
文摘The aim of the study was to analyze the histologic and ultrastructural changes after maxillary sinus augmentation with simultaneous implant placement using engineered bone graft material.In this study,calcium phosphate cement(CPC)scaffolds combined with goat bone marrow stromal cells(BMSCs)were used to fill goat sinus floor space after maxillary sinus floor elevation with simultaneous implant placement comparing with those not filled any grafted materials and used as controls.After a healing period of 3 months,the goat maxillary sinus membrane was examined using light microscopy and scanning electronic microscopy.The results showed that the connective tissue thickness and the epithelium thickness of mucosa were not statistically significant difference between two groups.The tissue engineered bone complex might be an ideal graft for the sinus floor elevation and have no influence on the sinus membrane under the histological and ultrastructural observation.
文摘Obejctive Superantigens are potent inflammatory stimuli which derive from pathogenic microbes such as bacteria, viruses and protozoa The aim of this study was to investigate the role of superantigens on the function of rabbit maxillary sinus epithelium Methods Twenty New Zealand white rabbits were divided into 4 groups Rabbit sinus mucosa was separated under a surgical microscope and mounted in Ussing chambers to record short circuit current, conductance and permeability to horseradish peroxidase (HRP) Group A was used as normal control Group B was stimulated with an injection of superantigen into the sinus for 4 hours The sinus mucosa of Group C was stimulated by the addition of tumor necrosis factor α (TNF α) into Ussing chambers Group D sinus mucosa was stimulated by superantigen after pretreatment with anti TNF α antibody Results Superantigen evoked increases in sinus epithelial cell baseline short circuit current, conductance and permeability to HRP stimulated by the addition of TNF α into Ussing chambers These were similar to results from superantigen stimulation in vivo The effect of superantigen on sinus epithelial cells could be blocked by pretreatment with anti TNF α antibody Conclusions Superantigen affected the function of sinus epithelial cells, including the capability of epithelial defensive barrier, which might be mediated by TNF α
