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Study of Repairing Bone Defects with Autogenous Nonvascular Iliac Bone Graft and Simultaneous Implantation

Author: LiuZhiHui
Tutor: WangHuiMing
School: Zhejiang University
Course: Clinical Stomatology
Keywords: Autologous bone Free bone transplantation Dental Implant Repair Osseointegration
CLC: R783
Type: Master's thesis
Year: 2004
Downloads: 70
Quote: 0
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Abstract


Oral and maxillofacial trauma and tumor surgery, alveolar bone defects often lead to long-term missing teeth can also cause alveolar bone atrophy. Can not only repair the alveolar bone defect combined with autogenous bone graft dental implant to restore patients shape, and can restore the patient's bite (occlusion). Especially an autogenous bone graft implants can also reduce the number of operations, and early resumption of the patient's bite (occlusion). Free transplantation of autologous bone healing process of a implants, implant osseointegration and clinical effect, different reported. The purpose of this study, autologous iliac bone free transplant a implants in animal experiments and clinical studies, is not simple bone graft implants control study observed free transplantation of autologous bone implants in the same period to repair bone defects The results of the results, as well as histological observation, scanning electron microscopy, mechanical testing, designed to reveal the free transplantation of autologous iliac simultaneous placement of implant healing process, and provide a theoretical basis for clinical work and learn. Methods The study divided the two parts of the animal experiments and clinical studies: animal experiments: select 12 healthy adult male Japanese white rabbits, free autogenous iliac bone graft in the the bilateral iliac preparation iliac defect model, and year respectively in the double side iliac bone graft area and non-bone graft iliac region implant homemade a cylindrical hydroxyapatite analog implant. Were randomly divided into three groups of four. After 4 weeks, 8 weeks, 12 weeks of a group of animals were killed, cut specimens. Gross observation, radiation, the histology (decalcification HE staining), scanning electron microscopy examination, mechanical testing. Clinical studies: 13 cases approached alveolar atrophy patients who intends line implant restoration, using autogenous iliac free simultaneous placement shift, Zhejiang University graduate papers planting BLB implant, in June after installing base stations, porcelain dental restoration. The observed implant loosening degrees osseointegration indicators of circumstances radiographic examination, the patient feels. The results of animal experiments: human specimens observed see groups implants and iliac bone linked closely together, the implant without loosening, shedding. The naked eye can see more bone integration between the implant and the iliac · stomach, just four weeks bone graft planted specimens in some regions visible a thin layer of fiber-like tissue. Radiation seized apricot: groups around the implant were no obvious radiolucent area. 4 weeks specimens of bone graft area density is slightly lower than the non-tip bone density; 8 weeks specimens, 12 weeks specimens grafting area density and non-bone graft area density is basically no difference. Knitting school and scanning electron microscopic examination of the experimental group and the control group implants are varying degrees of osseointegration and bone formation; better osseointegration the control organization implant formation than the experimental group; mechanical testing (reverse launch experiments) in each group implant four weeks, eight weeks, 12 weeks, followed by a better osseointegration. 1439N/ernZ, 94.6N/emZ 248.3N/ern weeks, 8 weeks, 12 weeks bone combined with the maximum load of the experimental group, respectively. The maximum load of the control group were 229.2N/emZ 3O7.IN/emZ 37,6 N / Cm clinical research: postoperative x-ray checks after June implant · stomach, quality good combination, no transmission shadow. See you in the cut mucosal implants without bone graft bone grows well, no pain patients consciously comfortable satisfaction shape. A year after the complex Yao X-ray-free transmission conscious patients comfortable and satisfied with the shape, planting good dental function. Conclusions autologous bones of the so-called · free flap and simultaneous implant placement can reduce not only surgery can shorten the edentulous time, as soon as possible to restore the form and function of the patient's to repair bone mass District teeth missing. , Slow healing process in direct planting, public tears House slender flash female ︺ owes day 'is a practical, clinical repair station referral stomach, an effective way to defect.

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