中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (47): 7034-7042.doi: 10.3969/j.issn.2095-4344.2016.47.006

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

骨诱导性磷酸钙陶瓷材料修复牙槽突裂

陈浩东1,姚金凤2,梁志刚2
  

  1. 1广州医科大学,广东省广州市  510000;2深圳市第二人民医院,广东省深圳市  518000
  • 收稿日期:2016-08-29 出版日期:2016-11-18 发布日期:2016-11-18
  • 通讯作者: 梁志刚,主任,深圳市第二人民医院口腔颌面外科,广东省深圳市 518000
  • 作者简介:陈浩东,男,1990年生,硕士,主要从事口腔颌面外科学研究。
  • 基金资助:

    深圳市科技创新委员会基础研究计划(JCYJ20130401111426275,JCYJ20140414170821224)

Osteoinductive calcium phosphate ceramics repair alveolar cleft defects

Chen Hao-dong1, Yao Jin-feng2, Liang Zhi-gang2
  

  1. 1Guangzhou Medical University, Guangzhou 510000, Guangdong Province, China; 2Shenzhen Second People’s Hospital, Shenzhen 518000, Guangdong Province, China
  • Received:2016-08-29 Online:2016-11-18 Published:2016-11-18
  • Contact: Liang Zhi-gang, Chief physician, Shenzhen Second People’s Hospital, Shenzhen 518000, Guangdong Province, China
  • About author:Chen Hao-dong, Master, Guangzhou Medical University, Guangzhou 510000, Guangdong Province, China
  • Supported by:

    the Basic Research Program of Technology and Innovation Commission of Shenzhen, No. JCYJ20130401111426275, JCYJ20140414170821224

摘要:

文章快速阅读:

 

文题释义:
骨诱导性磷酸钙陶瓷材料
:是由羟基磷灰石和β-磷酸三钙两相成分构成的陶瓷,其化学组成与骨组织的无机成分相似,目前体内外研究表明双相磷酸钙陶瓷除具有良好的生物相容性、生物活性、骨传导性以外,还具有骨诱导性,因此有望成为理想的骨替代材料。
磷酸钙陶瓷修复牙槽突裂:①为邻近裂隙和未萌出的牙提供骨性支持;②封闭口鼻瘘和前腭裂;③提供稳固的上颌牙弓,防止裂隙侧骨段的塌陷;④为唇和鼻底提供一个稳固的支撑支架,提高和支撑鼻翼基底,使面貌可得到满意的改善。

背景:前期研究制备出异位成骨佳的骨诱导性磷酸钙陶瓷。
目的:观察骨诱导性磷酸钙陶瓷材料修复牙槽突裂的效果。
方法:取比格幼犬9只,建立双侧牙槽突裂模型,造模后3个月,随机选取一侧置入骨诱导性高分子表面双相磷酸钙陶瓷(实验组),另一侧置入非骨诱导性光滑表面双相磷酸钙陶瓷(对照组),同时在犬大腿肌袋内埋置对应的材料。置入后4,8,12周,荧光显微镜下观察牙槽突裂植骨区材料内新骨形成,光镜下观察牙槽突裂植骨区与肌肉内成骨情况,CT检测牙槽突裂恢复情况。
结果与结论:①荧光显微镜观察结果:两组牙槽突裂植骨区材料内均可同时观察到呈环状排列的红色、黄色和绿色荧光条带;②光镜观察结果:置入12周时,实验组牙槽突裂植骨区骨改建明显,材料逐渐分解,间隙由大量成熟骨组织充填,与剩余材料结合紧密,并可见大量典型哈弗氏管结构;在肌肉组织中可见异位成骨。置入12周时,对照组骨组织形态与实验组相近,但成骨速度及成骨量较少,并且肌肉内无异位成骨;③CT检测结果:两组材料均很好恢复了犬牙槽突裂的外形和连续性,且不影响缺隙两侧恒牙的正常萌出;④结果表明:与传统磷酸钙陶瓷材料相比,骨诱导性磷酸钙陶瓷材料修复牙槽突裂缺损成骨启动更早、成骨速度更快、成骨量更多。

关键词: 生物材料, 口腔生物材料, 磷酸钙陶瓷, 牙槽突裂, 骨诱导, 人工骨, 生物矿化

Abstract:

BACKGROUND: In our previous studies, we had prepared calcium phosphate ceramics with better ectopic osteogenesis.
OBJECTIVE: To explore the effect of novel osteoinductive calcium phosphate ceramics in the repairing of alveolar cleft.
METHODS: Bilaterl alveolar defects were created in nine immature beagles. Three months later, osteoinductive calcium phosphate ceramics with high modular surface (experimental group) and smooth surface (control group) were randomly implanted in each side of the defect. Meanwhile, the corresponding material was implanted into the thigh muscle. New bone formation in the implanted region, osteogenesis in the implanted region and muscle, and respair results were respectively observed by fluorescence microscope, light microscope and CT at 4, 8 and 12 weeks after implantation.
RESULTS AND CONCLUSION: (1) Fluorescence microscope observation: A circular permutation of red, yellow and green fluorescent strip could be observed in both two groups. (2) Light microscope observation: At 12 weeks after implantation, in the experimental group, the bone reconstruction was obvious, the implant material was decomposed gradually, the gap was filled with a large number of mature bone that combined with the rest material closely, and numerous Haversian canals appeared; the control group was similar but slightly inferior to the experimental group in the quality of new bone. The experimental group material successfully induced heterotopic osteogenesis in muscle, while the control did not. (3) CT examination: The two group materials restored the appearance and continuity of the alveolar ridge, and made no effect on the eruption of permanent teeth in both sides of the defect. To conclude, our findings suggest that the novel osteoinductive calcium phosphate ceramic exhibits advantages in alveolar cleft repair with earlier osteogenesis activation, faster osteogenesis rate and more bone formation than those traditional materials.

Key words: Calcium Phosphates, Dental Procelain, Alveolar Process, Tissue Engineering

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