课题为广东省自然科学基金资助项目(编号 940845) 参考文献
1 Pogrel MA, MB, CH.B. The carbon dioxide laser in soft tissue preprosthetic surgery. J Prosthet Dent, 1989, 61(2):203~208
2 Lin PP, Ladner, Mitchell JC, et al. The effect of a pulsed Nd:YAG laser on periodontally diseased root surfaces: a SEM study. J Dent Res, 1992, 72:299
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