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中文摘要：
目的：在自行研制了弹性模量介于牙釉质和牙本质之间的玻璃纤维增强树脂桩的基础上，追踪观察其在严重缺损牙齿修复中的效果。 方法：选择2005-08／2006-10在桂林医学院附属医院行桩核冠修复并能配合修复后半年复查的患者69例，用自行研制的直径分别为1．4，1-8，21mm的圆柱形玻璃纤维，树脂复合材料桩钉对84个严重缺损牙进行桩核冠修复，其中52个前牙，32个后牙；桩修复体直径为2．1mm者22个，1．8mm者39个，1．4mm者23个：半年后进行临床和X射线复查，桩完好、根完好．核完好及冠未脱落或松动者为纤维桩修复成功；同时观察有无材料宿主反应。 结果：84个桩核冠修复体复查有2个桩和1个核松动、脱落，修复成功率为96．4％；前后牙及不同直径桩修复成功率的对比差异无显著性意义（P〉0．05）；所有利用纤维桩修复缺损患牙的患者均未发现有材料宿主反应。 结论：玻璃纤维增强树脂桩的力学性能达到修复要求，桩可通用于各牙位，直径1．4，1．8和2．1mm等3种规格的桩都适用于临床修复：初步证明玻璃纤维增强树脂桩是一种有价值的修复方式，但还需进行更长期和更大样本的临床观察。
英文摘要：
AIM： The modulus of elasticity of glass fiber post is between that of enamel and the dentins. This article describes the clinical applications of glass fiber post in restoring badly-damaged teeth. METHODS： Totally 69 patients, who received restoration of core crown and follow-up for half a year, were enrolled at Affiliated Hospital of Guilin Medical College from August 2005 to October 2006. The 84 badly-damaged teeth were restored in the core crown with cylindrical fibedresin reinforced composite post whose diameter ranging from 1.4 mm, 1.8 mm to 2.1 mm. Of them, there were 52 anterior teeth and 32 posterior teeth, 22 teeth with 2.1 mm, 39 teeth with 1.8 mm and 23 teeth with 1.4 mm. Six months later X-ray reexamination showed good post, root and core. Those with fixed crown indicated successful fiber post restoration. Simultaneously, host reaction was observed. RESULTS： Of the 84 core crown restored badly-damaged teeth, two posts and one core became loose and dropped, so the successful rate of restoration was 96.4%. No significant difference in the successful rate of restoration was found between the anterior teeth and posterior teeth with different diameter posts （P 〉 0.05）. No host reaction was found in fiber post restoration. CONCLUSION： Glass fiber post has good mechanics behavior. 1.4, 1.8 and 2.1 mm diameters of the post are available in teeth for clinical restoration. It is primarily verified that glass fiber post is good biologically material, but long-term clinical observation with more cases is needed.
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