Mijan Maite C, de Amorim Rodrigo G, Mulder Jan, Frencken Jo E, Leal Soraya C
Department of Global Oral Health, College of Dental Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands; Department of Pediatric Dentistry, School of Health Sciences, University of Brasília, Brasília, Brazil.
Community Dent Oral Epidemiol. 2015 Jun;43(3):232-9. doi: 10.1111/cdoe.12147. Epub 2015 Feb 2.
The aim of the study was to evaluate the exfoliation pattern of primary molars treated according to three treatment protocols. The hypothesis tested was that there is no difference in the exfoliation pattern of primary molars treated according to conventional restorative treatment using amalgam (CRT), atraumatic restorative treatment using high‐viscosity glass‐ionomer (ART), and ultraconservative treatment (UCT). The latter consisted of restoring small cavities with ART and cleaning medium/large nonrestored cavities daily with toothpaste/toothbrush under supervision.
A sample of 302 children aged 6‐7 years from a suburban area of Brasilia was followed up for 3.5 years. The numbers of treated molars were 341 (CRT), 244 (ART), and 275 (UCT). Exfoliation rates were obtained using the PHREG procedure. Differences between the three treatment protocol groups were tested using the Wald test.
After 3.5 years, there was no difference over the exfoliation rates of all primary molars as 51.0% (CRT), 48.7% (ART), and 59.3% (UCT) had exfoliated at the overall period (P = 0.34).
The three treatment protocols led to similar exfoliation patterns of all primary molars after 3.5 years.
本研究旨在评估按照三种治疗方案治疗的乳磨牙的脱落模式。所检验的假设是，使用汞合金的传统修复治疗（CRT）、使用高粘度玻璃离子的非创伤性修复治疗（ART）和超保守治疗（UCT）治疗的乳磨牙在脱落模式上没有差异。后者包括用ART修复小龋洞，并在监督下每天用牙膏/牙刷清洁中/大的未修复龋洞。
对来自巴西利亚郊区的302名6-7岁儿童的样本进行了3.5年的随访。接受治疗的磨牙数量分别为341颗（CRT）、244颗（ART）和275颗（UCT）。使用PHREG程序获得脱落率。使用Wald检验对三个治疗方案组之间的差异进行检验。
3.5年后，所有乳磨牙的脱落率没有差异，在整个期间，51.0%（CRT）、48.7%（ART）和59.3%（UCT）的乳磨牙已经脱落（P = 0.34）。
3.5年后，三种治疗方案导致所有乳磨牙的脱落模式相似。
