乳磨牙龋源性牙髓炎的根分叉异常表现(附24例术后分析)

目的：观察龋源性乳磨牙牙髓炎的根分叉异常表现及其活髓切断术后疗效分析。方法：对临床诊断为慢性牙髓炎、慢性牙髓炎急性发作的２４例２９个下颌乳磨牙行活髓切断术，摄取术前Ｘ线片，冠髓组织进行病理学检查。半年、１年定期复查。结果：牙髓组织炎症的患牙绝大多数Ｘ线片均显示其根分叉处骨组织的异常表现。术后１年除３例外，Ｘ线片显示根分叉处异常现象消失。半年、１年后疗效明显。结论：乳磨牙牙髓炎症常常伴发根分叉下方的根周组织感染。乳磨牙活髓切断术后需定期拍摄Ｘ线片复查。

Abnormality of the furcation in deciduous molar with carious pulpitis: Observation of 24 cases after pulpectomy

Objective:To observe the changes of furcation in deciduous molar with carious pulpitis and the effecfs of pulpectomy,Method:Pulpectomy followed by calvital pulp capping was performed in 29 mandibular deciduous molars of 24 cases diagnosed as chronic pulpitis and acute exacerbation of chronic pulpitis.The cronal pulps were examined pathologically. X ray photographs of the treated teeth were taken before,6 months and one year after the treatment respectively.Results:The destruction of alveolar bone around the furcation was positively correlated with the inflammation of the pulp tissue in most cases.One year after treatment,the abnormal changes around furcation disappeared in 26 out of the 29 molars.Conclusion:Deciduous molar pulpitis is always associated with inflammation in the bone tissue around furcation.Pulpectomy is effective in the treatment and it is necessary to examine with X ray film at regular intervals after treatment.