摘要
目的比较传统带环丝圈式阻萌器和改良带环丝圈式间隙保持器在恒牙早萌病例的临床应用效果。方法选择40例6.5~8.5岁乳磨牙早失伴后继恒牙早萌的患儿,分别采用传统带环丝圈式阻萌器（传统组）和改良带环丝圈式间隙保持器（改良组）治疗,定期复诊观察至早萌恒牙牙根发育1/2以上,拆除矫治器,分别从患儿对阻萌器的制作、间隙保持情况、早萌牙健康状况等方面进行对比研究,并对测量数据进行统计学分析。结果两组在间隙维持和阻萌效果方面差异无统计学意义（P〉0.05）,传统组患儿的早萌牙面龋发生率明显高于改良组（P〈0.05）。结论改良带环丝圈式间隙保持器在恒牙早萌矫治中有效,且有利于龋病预防。
Objective To observe the clinical efficacy in patients treated with two different eruption blocking appliances. Methods Totally 40 children（21 boys, 19 girls）, aged 6.5-8.5 years old, having premature eruption of permanent tooth were randomly divided into 2 groups,with 20 cases in each group： group A（wearing traditional band and loop appliance of eruption blocking during the whole day） and group B（wearing modified band and loop appliance of eruption blocking during the whole day）. The patients had regular check every 3 months until the root of premature premolar developed 1/2. The efficacy of the two appliances was evaluated on the following aspects： space maintenance, losing ratio of bands, tooth mobility and prevalence of dental caries of the premolars. Results The efficacy on space maintaining and eruption impaction were not statistically different（P 0.05）, but prevalence of dental caries of the teeth in group A was higher than that of group B（P 0.05）. Conclusion The modified band and loop appliance of eruption blocking is effective and good for tooth health.
出处
《口腔疾病防治》
2016年第7期420-423,共4页
Journal of Prevention and Treatment for Stomatological Diseases
基金
国家自然科学基金(81300905)
深圳市科技计划项目(201202080)
关键词
阻萌器
间隙保持器
恒牙早萌
脱落率
患龋率
Appliance of eruption blocking
Space maintainer
Premature eruption of permanent tooth
Losing ratio of bands
Prevalence of dental caries
