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- 2017
层递法探查疏通中青年患者下颌磨牙近中中央根管的初步研究
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Abstract:
摘要 目的:评估层递法探查中青年患者下颌磨牙近中中央根管的应用价值。方法:采集20~45岁患者60人,下颌第一磨牙45颗,下颌第二磨牙25颗。应用层递法对根管系统进行探查,记录探查结果,应用卡方检验统计分析。采用分角度X线投照描计下颌磨牙MM根管的走行特点。结果:肉眼探查确定MM根管 3个(4.3%),显微镜下确定7个(10.0%),显微超声技术辅助下确定15个(21.4%),CBCT结合显微超声技术辅助下确定17个(24.3%),第四阶段与前两个阶段间存在显著统计学差异(P<0.05),但与第三阶段探查分析无统计学差异。在确定的17个MM根管中,显示“独立”根尖孔的2个; “歧状”解剖8个;“融合”解剖7个。结论:层递法应用于中青年下颌磨牙MM根管的探查,可以有效提高下颌磨牙MM根管的探查成功率
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