中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (26): 4149-4154.doi: 10.3969/j.issn.2095-4344.2017.26.009

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

评价富血小板纤维蛋白单独用于上颌窦提升种植骨再生的效果

靳夏莹1,那日苏2,郑  辉2,寇  霓2,仲维剑2,马国武2 
  

  1. 1大连医科大学口腔医学院口腔颌面外科,辽宁省大连市  116023;2大连医科大学附属口腔医院口腔颌面外科,辽宁省大连市  116023
  • 收稿日期:2017-04-13 出版日期:2017-09-18 发布日期:2017-09-28
  • 通讯作者: 仲维剑,副教授,硕士生导师,大连医科大学附属口腔医院口腔颌面外科,辽宁省大连市 116023
  • 作者简介:靳夏莹,女,1990年生,山西省吕梁市人,汉族, 2014年大连医科大学毕业,硕士,医师,主要从事牙种植和骨再生技术的研究。
  • 基金资助:
    辽宁省自然科学基金(2015010313-301)

Bone regeneration effects of platelet-rich fibrin used alone in sinus floor elevation

Jin Xia-ying1, Na Ri-su2, Zheng Hui2, Kou Ni2, Zhong Wei-jian2, Ma Guo-wu2
  

  1. 1Department of Oral Maxillofacial Surgery, College of Stomatology, Dalian Medical University, Dalian 116023, Liaoning Province, China; 2Department of Oral Maxillofacial Surgery, Affiliated Hospital of Stomatology, Dalian Medical University, Dalian 116023, Liaoning Province, China
  • Received:2017-04-13 Online:2017-09-18 Published:2017-09-28
  • Contact: Zhong Wei-jian, Associate professor, Master’s supervisor, Department of Oral Maxillofacial Surgery, Affiliated Hospital of Stomatology, Dalian Medical University, Dalian 116023, Liaoning Province, China
  • About author:Jin Xia-ying, Master, Physician, Department of Oral Maxillofacial Surgery, College of Stomatology, Dalian Medical University, Dalian 116023, Liaoning Province, China
  • Supported by:
    the Natural Science Foundation of Liaoning Province, No. 2015010313-301

摘要:

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文题释义:
富血小板纤维蛋白:是通过对新鲜的静脉血进行离心而获得的一种胶冻状血液制品。由于离心管中无抗凝剂,血液在离心的过程中缓慢凝固,并在管内分成3层,上层为血清,下层为红细胞,中间层是富血小板纤维蛋白,大量的血小板和白细胞被黏附在纤维蛋白网络所组成的凝胶样物质中。血小板在血液凝固过程中会释放出多种生长因子,同时纤维蛋白网为细胞的迁移提供支架。因此,富血小板纤维蛋白在组织再生和伤口愈合中起着重要的作用。
上颌窦提升:在种植义齿修复中,当上颌后牙区骨量不足时,剥离抬升上颌窦黏膜,利用上颌窦底的空间进行骨移植,以增加种植区骨量的一种手术方法。临床上,可分为上颌窦前壁开窗外提升和牙槽嵴冲顶内提升两种术式。
 
背景:富血小板纤维蛋白作为一种富含生长因子、纤维蛋白的自体血液浓缩物,具有促进组织再生的功效。通常与自体或异体骨粉混合应用于口腔颌面部骨缺损的修复,促进骨再生,但其单独作为上颌窦提升植骨材料的成骨效果还有争议。
目的:通过建立上颌窦提升同期种植模型,单独使用富血小板纤维蛋白作为骨移植材料,观察评价种植体周围骨再生的效果。
方法:12-18个月龄的健康成年杂种犬12只,随机分为富血小板纤维蛋白组、自体骨组、自体血液组,每组4只。拔除双侧上颌第一磨牙,12周后行上颌窦外提升同期种植术。3组犬的上颌窦内分别植入同等体积富血小板纤维蛋白、自体骨屑、自体血液。植入后12周取材,通过大体观察、影像学及组织学分析评价骨再生效果。
结果与结论:①所有种植体周围都有不同程度的新骨生成,新生骨与窦底骨质相连接,种植体尖端无骨形成;②新骨高度:富血小板纤维蛋白组为(3.135±0.288) mm,自体骨组为(3.218±0.345) mm,自体血液组为(1.898±0.157) mm,富血小板纤维蛋白组和自体血液组,自体骨组和自体血液组之间的新骨高度差异有显著性意义(P < 0.05);③新骨密度:富血小板纤维蛋白组为(65.06±5.88) g/cm3,自体骨组为(75.34±8.18) g/cm3,自体血液组为(56.92±4.95) g/cm3。富血小板纤维蛋白组和自体骨组,自体骨组和自体血液组,富血小板纤维蛋白组和自体血液组之间的新骨密度差异有显著性意义(P < 0.05);④结果表明,将富血小板纤维蛋白单独应用于上颌窦提升种植中,可以促进种植体周围的新骨形成,但新骨的形成量有限。

关键词: 生物材料, 口腔生物材料, 牙种植体, 上颌窦提升, 富血小板纤维蛋白, 骨再生, 动物实验, 辽宁省自然科学基金

Abstract:

BACKGROUND: As a blood concentrate rich in growth factors and fibrin, platelet-rich fibrin (PRF) is able to significantly promote bone regeneration. PRF mixed with bone substitutes is commonly used to repair bone defects in oral maxillofacial region. But it remains controversial whether PRF as a sole material in sinus floor elevation can produce enough new bone tissues.
OBJECTIVE: To evaluate the osteogenic potential of PRF as a sole grafting material in sinus floor elevation by means of an animal model.
METHODS: Twelve healthy adult mongrel dogs aged 12-18 months were selected and randomized into three groups (groups A, B and C), with four dogs in each group. Upper first molars on both side of each dog were extracted 12 weeks prior to sinus floor elevation and simultaneous implants placement. Different materials were used to fill in the space between the sinus membrane and implant. Groups A, B and C were filled with PRF, autologus bone particles and autologus blood clot respectively. After 12 weeks, specimens were harvested to analyze the new bone formation by gross observation, X-ray examination and histological evaluation.
RESULTS AND CONCLUSION: New bone formation was found to embrace all the implants close to the bony sinus floor, and the tips of all implants were free from bone coverage. The new bone height of groups A, B and C were (3.135±0.288), (3.218±0.345), and (1.898±0.157) mm, respectively. The new bone density of groups A, B and C were (65.06±5.88), (75.34±8.18), and (56.92±4.95) g/cm3, respectively. There were significant differences between the new bone height in groups A and C as well as in groups B and C (P < 0.05). Also, significant differences were found between the new bone density in groups A and B, B and C, A and C (P < 0.05). Within the confine of this experiment, it is feasible to use PRF as a sole grafting material in the sinus floor elevation to generate new bone, but the new bone volume is limited.

Key words: Maxillary Sinus, Platelet-Rich Plasma, Dental Implants, Tissue Engineering

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