Objective To evaluate the incidence of two-rooted mandibular premolar morphology using full-mouth periapical film series in a Chinese population,with particular emphasis on bilateral incidence,so as to provide a clini...Objective To evaluate the incidence of two-rooted mandibular premolar morphology using full-mouth periapical film series in a Chinese population,with particular emphasis on bilateral incidence,so as to provide a clinical anatomical basis for root canal treatment in mandibular premolars.Methods A total of 2015 patients who underwent dental treatment and had full mouth periapical radiographs at the Peking University School of Stomatology from April 2011 to April 2012 were enrolled in this study.Three experienced dentists reviewed the patients' periapical films and classified the root morphology of mandibular premolars bilaterally.The incidence of unilateral and bilateral double roots were recorded and calculated,including confirmed and suspected bucco-lingual root types.Results In terms of the morphology of two-rooted mandibular first premolars,of the 2015 cases with complete root formation,two-rooted first premolars were detected in 120 cases,with a total number of 159 teeth.According to the number of teeth,the overall incidence of double roots was 4.03%(159/3972).In terms of the morphology of two-rooted mandibular second premolars,of the 2015 cases with complete root formation,two-rooted second premolars were detected in 24 cases,with a total number of 33 teeth.According to the number of teeth,the overall incidence of double roots was 0.85%(33/3880).Conclusions The roots of mandibular premolars display specific morphological patterns.Based on a large sample,we observed and calculated not only the occurrence rate of bucco-lingual and mesio-distal double roots in first and second mandibular premolars,but also the incidence of unilateral or bilateral double roots within the same mandible.These findings could provide useful information on the anatomical structure of mandibular premolars for endodontic,prosthodontic and surgical procedures,and could improve the quality of treatment and reduce complications.展开更多
目的分析、探究慢性根尖周炎根尖未闭合经口腔显微镜下生物陶瓷Iroot BP Plus联合热牙胶充填技术的治疗效果。方法选取我院口腔专科2020年3月至2021年3月期间收治的113例慢性根尖周炎根尖未闭合患者为研究对象,对患者进行分组,为不同病...目的分析、探究慢性根尖周炎根尖未闭合经口腔显微镜下生物陶瓷Iroot BP Plus联合热牙胶充填技术的治疗效果。方法选取我院口腔专科2020年3月至2021年3月期间收治的113例慢性根尖周炎根尖未闭合患者为研究对象,对患者进行分组,为不同病例组的患者实施不同的治疗,对比患者之间的临床疗效及炎性因子水平。结果观察组临床总有效率高于对照组(P<0.05);两组临床过程中的操作时间并无明显统计学差异(P>0.05);观察组术后疼痛现象的持续时间短于对照组(P<0.05);治疗两周后对比炎性因子水平后发现,两组炎性因子水平较治疗前均有降低,但观察组炎性因子水平更低于对照组(P<0.05)。结论从临床治疗的综合效果来看,为慢性根尖周炎根尖未闭合患者实施经口腔显微镜下生物陶瓷IrootBPPlus联合热牙胶充填治疗不仅具有理想的治疗成效,且不会增加临床操作时间,减少了患者治疗后的疼痛持续时间,且可降低患者因炎性因子水平异常升高而出现感染的风险系数,具有在临床上进行推广及应用的价值。展开更多
文摘Objective To evaluate the incidence of two-rooted mandibular premolar morphology using full-mouth periapical film series in a Chinese population,with particular emphasis on bilateral incidence,so as to provide a clinical anatomical basis for root canal treatment in mandibular premolars.Methods A total of 2015 patients who underwent dental treatment and had full mouth periapical radiographs at the Peking University School of Stomatology from April 2011 to April 2012 were enrolled in this study.Three experienced dentists reviewed the patients' periapical films and classified the root morphology of mandibular premolars bilaterally.The incidence of unilateral and bilateral double roots were recorded and calculated,including confirmed and suspected bucco-lingual root types.Results In terms of the morphology of two-rooted mandibular first premolars,of the 2015 cases with complete root formation,two-rooted first premolars were detected in 120 cases,with a total number of 159 teeth.According to the number of teeth,the overall incidence of double roots was 4.03%(159/3972).In terms of the morphology of two-rooted mandibular second premolars,of the 2015 cases with complete root formation,two-rooted second premolars were detected in 24 cases,with a total number of 33 teeth.According to the number of teeth,the overall incidence of double roots was 0.85%(33/3880).Conclusions The roots of mandibular premolars display specific morphological patterns.Based on a large sample,we observed and calculated not only the occurrence rate of bucco-lingual and mesio-distal double roots in first and second mandibular premolars,but also the incidence of unilateral or bilateral double roots within the same mandible.These findings could provide useful information on the anatomical structure of mandibular premolars for endodontic,prosthodontic and surgical procedures,and could improve the quality of treatment and reduce complications.
文摘目的分析、探究慢性根尖周炎根尖未闭合经口腔显微镜下生物陶瓷Iroot BP Plus联合热牙胶充填技术的治疗效果。方法选取我院口腔专科2020年3月至2021年3月期间收治的113例慢性根尖周炎根尖未闭合患者为研究对象,对患者进行分组,为不同病例组的患者实施不同的治疗,对比患者之间的临床疗效及炎性因子水平。结果观察组临床总有效率高于对照组(P<0.05);两组临床过程中的操作时间并无明显统计学差异(P>0.05);观察组术后疼痛现象的持续时间短于对照组(P<0.05);治疗两周后对比炎性因子水平后发现,两组炎性因子水平较治疗前均有降低,但观察组炎性因子水平更低于对照组(P<0.05)。结论从临床治疗的综合效果来看,为慢性根尖周炎根尖未闭合患者实施经口腔显微镜下生物陶瓷IrootBPPlus联合热牙胶充填治疗不仅具有理想的治疗成效,且不会增加临床操作时间,减少了患者治疗后的疼痛持续时间,且可降低患者因炎性因子水平异常升高而出现感染的风险系数,具有在临床上进行推广及应用的价值。
