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目的观察铸造全冠在下颌后牙修复中的应用效果。方法选择下颌患牙体牙髓根尖周病变根管治疗后无症状的患者60例,制作铸造全冠,试戴调颌粘接。选择同期相同病例60例作为对照组,未行特殊治疗,随访观察2年。结果观察组共失败2例,不良预后发生率3.33%,显著低于对照组不良预后发生率95.00%,差异有统计学意义(χ2=14.31,P<0.05)。结论下颌铸造全冠修复后效果良好,适用于存在拔牙禁忌证的中老年患者。
Objective To observe the application effect of casting crown in mandibular posterior teeth restoration. Methods Sixty patients with asymptomatic root apical lesions of mandibular odontogenic pulpus were selected for casting full crowns. Select the same period in the same case 60 cases as a control group, without special treatment, followed up for 2 years. Results The observation group failed in 2 cases, the incidence of adverse prognosis was 3.33%, which was significantly lower than that in the control group (95.00%). The difference was statistically significant (χ2 = 14.31, P <0.05). Conclusion The effect of mandibular cast crown restoration is good, which is suitable for middle-aged and elderly patients with tooth extraction contraindication.