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
目的:探讨剩余垂直骨量/剩余牙槽骨高度(residual bone height,RBH)、上颌窦膜穿孔和空洞存在对上颌窦底提升术(maxillary sinus lifting,MSFA)植入种植体存活率的长期影响。方法:选择2005—2009年行MSFA并随访至2019年的56例患者(98颗...目的:探讨剩余垂直骨量/剩余牙槽骨高度(residual bone height,RBH)、上颌窦膜穿孔和空洞存在对上颌窦底提升术(maxillary sinus lifting,MSFA)植入种植体存活率的长期影响。方法:选择2005—2009年行MSFA并随访至2019年的56例患者(98颗种植体)作为研究对象。使用全景片和根尖周X线片评估RBH。根据RBH、窦膜穿孔和空洞的存在,采用对数秩检验和种植体失败危险比例评估累积生存率(cumulative probability of survival,CSR),采用SPSS 21.0软件包对数据进行统计学分析。结果:无窦膜穿孔的种植体的剩余垂直骨量显著大于窦膜穿孔的种植体,存活的种植体的剩余垂直骨量显著大于植入失败的种植体(P<0.05),但性别、吸烟、空洞对剩余垂直骨量无显著影响(P>0.05)。MSFA手术植入种植体后10年总CSR为94.5%,其中,女性种植体的CSR显著高于男性,非吸烟组CSR显著高于吸烟组,RBH≥3 mm的种植体CSR显著高于RBH<3 mm的种植体;但窦膜穿孔与无窦膜穿孔间CSR无显著差异。结论:RBH<3 mm植入的种植体的CSR较低,在适当的口腔卫生维持条件下,其存活率可被接受。窦膜穿孔和空洞存在,不会影响侧向MSFA植入种植体的存活率。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
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.
文摘目的:探讨剩余垂直骨量/剩余牙槽骨高度(residual bone height,RBH)、上颌窦膜穿孔和空洞存在对上颌窦底提升术(maxillary sinus lifting,MSFA)植入种植体存活率的长期影响。方法:选择2005—2009年行MSFA并随访至2019年的56例患者(98颗种植体)作为研究对象。使用全景片和根尖周X线片评估RBH。根据RBH、窦膜穿孔和空洞的存在,采用对数秩检验和种植体失败危险比例评估累积生存率(cumulative probability of survival,CSR),采用SPSS 21.0软件包对数据进行统计学分析。结果:无窦膜穿孔的种植体的剩余垂直骨量显著大于窦膜穿孔的种植体,存活的种植体的剩余垂直骨量显著大于植入失败的种植体(P<0.05),但性别、吸烟、空洞对剩余垂直骨量无显著影响(P>0.05)。MSFA手术植入种植体后10年总CSR为94.5%,其中,女性种植体的CSR显著高于男性,非吸烟组CSR显著高于吸烟组,RBH≥3 mm的种植体CSR显著高于RBH<3 mm的种植体;但窦膜穿孔与无窦膜穿孔间CSR无显著差异。结论:RBH<3 mm植入的种植体的CSR较低,在适当的口腔卫生维持条件下,其存活率可被接受。窦膜穿孔和空洞存在,不会影响侧向MSFA植入种植体的存活率。
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.
