Bone Healing After Bur and Er:YAG Laser Ostectomies
Bone Healing After Bur and Er:YAG Laser Ostectomies
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DOI：
10.1016/j.joms.2010.02.029
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发表时间：
2011-04-01
影响因子：
1.9
通讯作者：
Ponzoni, Deise
中科院分区：
文献类型：
--
作者：
Martins, Gustavo Lisboa;Puricelli, Edela;Ponzoni, Deise
目的：在口腔颌面外科中，经常需要采用不同的方法进行截骨。旋转和往复运动装置是最常用的，但具有缺点，例如噪音、振动和引起热损伤的可能性。激光系统是这些程序的有趣替代品。我们分析了骨愈合的大鼠模型下颌骨切除术后，与外科钻头或非接触铒：钇铝石榴石激光使用不同的能量levels.Materials和方法：四组5只大鼠进行骨切除术的骨皮质的下颌骨体，冲洗，使用外科钻头或铒：钇铝石榴石激光具有不同的能量参数。金属板用于腔的形态标准化。7，14，45，60和90天后收集的样品进行了分析，通过光学microscopic.Results：进行手术布尔斯截骨导致骨愈合的皮质骨内膜和剩余的骨小梁。45天后皮质骨内膜修复，随后是骨重建。激光照射后，愈合涉及从外皮质表面和骨内膜的骨新生。表面区域的热损伤后，观察激光治疗的3种条件下使用到60天，然后骨remodeling.Conclusions：激光截骨术导致在一个薄层的热损伤。当使用外科布尔斯钻时，骨愈合更快，90天后达到相似的结果。(C)2011年美国口腔颌面外科医师协会J Oral Maxillofac Surg 69：1214-1220，2011
Purpose: Ostectomies, performed by different methods, are often necessary in oral and maxillofacial surgery. Rotatory and reciprocating devices are most frequently used but have disadvantages, such as noise, vibration, and the potential for inducing thermal damage. Laser systems are interesting alternatives to these procedures. We analyzed bone healing in a rat model after mandibular ostectomy with a surgical bur or noncontact erbium:yttrium-aluminum-garnet laser using different energy levels.Materials and Methods: Four groups of 5 rats each underwent ostectomy of the bone cortical of the mandibular body, with irrigation, using a surgical bur or erbium:yttrium-aluminum-garnet laser with different energy parameters. A metal plate was used for morphologic standardization of the cavities. The samples collected after 7, 14, 45, 60, and 90 days were analyzed by optical microscopy.Results: The ostectomies performed with surgical burs resulted in bone healing from the cortical endosteum and remaining trabecular bone. The cortical endosteum was repaired after 45 days, followed by bone remodeling. After laser irradiation, healing involved bone neoformation from the external cortical surface and endosteum. Surface regions with thermal damage were observed after laser treatment in the 3 conditions used up to day 60, followed by bone remodeling.Conclusions: Laser ostectomies resulted in a thin layer of thermal damage. Bone healing was faster when surgical burs were used, with similar results reached after 90 days. (C) 2011 American Association of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 69:1214-1220, 2011