超声和手工根面平整术对慢性牙周炎的临床疗效和细菌学比较 (附13例分析)
초성화수공근면평정술대만성아주염적림상료효화세균학비교 (부13례분석)
The clinical and bacterial comparison of manual and ultrasonic root planing in chronic periodontitis: Analysis on 13 cases
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