透明成型冠在重度龋患儿下颌乳切牙美容修复的疗效

Application of strip crown form in aesthetic restoration of mandibular deciduous incisors in severe childhood caries

目的探讨使用上颌乳侧切牙透明成型冠对儿童下颌乳切牙龋损进行美容修复的可行性及有效性。方法2016年1月至2017年12月,对广州市妇女儿童医疗中心口腔科就诊的64例龋病患儿(男35例,女29例;年龄2~5岁)进行下前牙美容修复,采用自身对照的方法比较透明成型冠和树脂填充修复的效果。分别于治疗后3、6、12个月随访。结果治疗后3个月,两组乳切牙修复成功率差异无统计学意义(P>0.05);治疗后6个月,两组乳切牙修复体边缘密合性差异有统计学意义(χ^2=3.919, P=0.048);治疗后12个月,两组乳切牙修复体完整性和继发龋发生率的差异有统计学意义(填充体完整性χ^2=5.027,P=0.025;继发龋χ^2=4.369,P=0.037 )。结论上颌乳侧切牙透明成型冠可美容修复下颌乳切牙龋损,其效果优于直接树脂填充术。

Objective To explore the feasibility and effectiveness of aesthetic restoration of caries of mandibular deciduous incisors with strip crown form of maxillary deciduous incisors. Methods A total of 64 patients (202 teeth) with symmetrical caries of bilateral mandibular central incisors or lateral incisors were randomly selected. The opposite maxillary incisors were restored with strip crowns form and the opposite incisors were restored with resin composite. The effects of the two methods and the incidence of complications were compared three months, six months and twelve months after treatment. Results Three months after treatment, there was no significant difference in the success rate between the two groups. Six months after treatment, there was significant difference in the marginal adaptation between the two groups (χ^2=3.919, P =0.048);12 months after treatment, there was significant difference in the restoration integrity of the two groups and the incidence of secondary caries (χ^2=5.027, P=0.025;secondary caries χ^2=4.369, P=0.037 ). Conclusions The strip crown form of maxillary primary incisors can be used for aesthetic restoration of caries of mandibular primary incisors, and its effect is better than that of direct resin filling. The strip crown form for mandibular primary incisors needs to be developed and produced urgently.