目的:利用计算机辅助设计与制造(computer aided design/manufacturing,CAD/CAM)技术对冠根折的磨牙进行高嵌体冠修复,并观察其临床效果。方法:对根管治疗后的冠根折患牙1例,行钕(Nd:YAG)激光去除部分牙龈,暴露患牙龈下折裂边缘后,采用...目的:利用计算机辅助设计与制造(computer aided design/manufacturing,CAD/CAM)技术对冠根折的磨牙进行高嵌体冠修复,并观察其临床效果。方法:对根管治疗后的冠根折患牙1例,行钕(Nd:YAG)激光去除部分牙龈,暴露患牙龈下折裂边缘后,采用椅旁CAD/CAM二矽酸锂高嵌体冠修复。按照改良的美国公共卫生署(United States Public Health Service,USPHS)标准对修复体的临床疗效进行评价。结果:修复体边缘密合,邻接和咬合关系良好,2周后复诊牙龈恢复良好。复诊时修复体无折裂、松动、脱落,基牙无折裂、疼痛、松动等现象,牙龈形态愈合良好。结论:利用CAD/CAM技术对冠根折的磨牙进行高嵌体冠修复,能获得良好的临床效果。展开更多
BACKGROUND Complicated crown–root fracture (CRF) involves severe injury to the crown, root,and pulp, and may be accompanied by multiple root fractures. The loss of a toothhas lifelong consequences for children and te...BACKGROUND Complicated crown–root fracture (CRF) involves severe injury to the crown, root,and pulp, and may be accompanied by multiple root fractures. The loss of a toothhas lifelong consequences for children and teenagers, but the maintenance of pulphealth and the calcific healing of multiple root fractures are rarely reported in theliterature.CASE SUMMARY This case reports healing of a permanent tooth with complicated crown–root andadditional root fractures, in which pulp health was maintained. A 10-year-old girlfell and fractured the root of her maxillary left central incisor at the cervical level.After the coronal fragment was repositioned, the tooth was splinted until thetooth was no longer mobile, 2 years later. Eight years after treatment, the toothhas remained asymptomatic with vital pulp and localized gingival overgrowth.Cone-beam computed tomography revealed not only calcified healing of the CRFbut also spontaneous healing in an additional undiagnosed root fracture. Thefracture line on the enamel could not be healed by hard tissue and formed agroove in the cervical crown. It was speculated that the groove was related to thelocalized gingival overgrowth.CONCLUSION This case provides a clinical perspective of the treatment of a tooth with acomplicated CRF and an additional root fracture.展开更多
文摘目的:利用计算机辅助设计与制造(computer aided design/manufacturing,CAD/CAM)技术对冠根折的磨牙进行高嵌体冠修复,并观察其临床效果。方法:对根管治疗后的冠根折患牙1例,行钕(Nd:YAG)激光去除部分牙龈,暴露患牙龈下折裂边缘后,采用椅旁CAD/CAM二矽酸锂高嵌体冠修复。按照改良的美国公共卫生署(United States Public Health Service,USPHS)标准对修复体的临床疗效进行评价。结果:修复体边缘密合,邻接和咬合关系良好,2周后复诊牙龈恢复良好。复诊时修复体无折裂、松动、脱落,基牙无折裂、疼痛、松动等现象,牙龈形态愈合良好。结论:利用CAD/CAM技术对冠根折的磨牙进行高嵌体冠修复,能获得良好的临床效果。
基金Supported by 2021 Disciplinary Construction Project in School of Dentistry,Anhui Medical University,No.2021kqxkFY05.
文摘BACKGROUND Complicated crown–root fracture (CRF) involves severe injury to the crown, root,and pulp, and may be accompanied by multiple root fractures. The loss of a toothhas lifelong consequences for children and teenagers, but the maintenance of pulphealth and the calcific healing of multiple root fractures are rarely reported in theliterature.CASE SUMMARY This case reports healing of a permanent tooth with complicated crown–root andadditional root fractures, in which pulp health was maintained. A 10-year-old girlfell and fractured the root of her maxillary left central incisor at the cervical level.After the coronal fragment was repositioned, the tooth was splinted until thetooth was no longer mobile, 2 years later. Eight years after treatment, the toothhas remained asymptomatic with vital pulp and localized gingival overgrowth.Cone-beam computed tomography revealed not only calcified healing of the CRFbut also spontaneous healing in an additional undiagnosed root fracture. Thefracture line on the enamel could not be healed by hard tissue and formed agroove in the cervical crown. It was speculated that the groove was related to thelocalized gingival overgrowth.CONCLUSION This case provides a clinical perspective of the treatment of a tooth with acomplicated CRF and an additional root fracture.
