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该文的目的是研究自然口扩大（ＭＭＡ）对正常鼻窦粘膜及由窦口堵塞诱发的合并与不合并细菌感染的鼻窦炎的作用以及改良鼻窦根治术（ＭＲＯ）后感染粘膜的恢复能力。取体重为２．７～４．０ｋｇ的兔３２只，分为３组。第１组为ＭＭＡ组，共１１只，堵塞一侧上颌窦口，其中４只
The aim of this study was to investigate the effect of spontaneous oral enlarging (MMA) on normal sinus mucosa and sinusitis with and without bacterial infection induced by occlusion of the ostium and to improve the recovery of mucosa after radical mastectomy (MRO). Thirty-two rabbits weighing 2.7 ~ 4.0kg were divided into three groups. The first group was MMA group, a total of 11, one side of maxillary sinus occlusion, of which 4