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美國植體品牌 - Histologic evaluation of a provisional implant retrieved

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學術文章：
Histologic evaluation of a provisional implant retrieved from man 7 months after placement in a sinus augmented with calcium sulphate: a case report.

作者：G Iezzi, E Fiera, A Scarano, G Pecora, A Piattelli.
出處：Journal of Oral Implantology. Volume 33, No. 2. 2007.

摘要：
ABSTRACT

Little is known about the in vivo healing processes at the interface of implants placed in different grafting materials. For optimal sinus augmentation, a bone graft substitute that can regenerate high-quality bone and enable the osseointegration of load-bearing titanium implants is needed in clinical practice. Calcium sulphate (CaS) is one of the oldest biomaterials used in medicine, but few studies have addressed its use as a sinus augmentation material in conjunction with simultaneous implant placement. The aim of the present study was to histologically evaluate an immediately loaded provisional implant retrieved 7 months after simultaneous placement in a human sinus grafted with CaS. During retrieval, bone detached partially from one of the implants which precluded its use for histologic analysis. The second implant was completely surrounded by native and newly formed bone, and it underwent histologic evaluation. Lamellar bone, with small osteocyte lacunae, was present and in contact with the implant surface. No gaps, epithelial cells, or connective tissues were present at the bone–implant interface. No residual CaS was present. Bone–implant contact percentage was 55% ± 8%. Of this percentage, 40% was represented by native bone and 15% by newly formed bone. CaS showed complete resorption and new bone formation in the maxillary sinus; this bone was found to be in close contact with the implant surface after immediate loading.

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Histologic evaluation of a provisional implant retrieved from man 7 months after placement in a sinus augmented with calcium sulphate a case report.

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出處：Journal of Oral Implantology. Volume 33, No. 2. 2007.

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