数字化印模对可摘局部义齿临床适合性的影响
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摘要
目的:探讨口内数字化印模制取方法对可摘局部义齿临床适合性的影响。方法:选择Kennedy第三类或第四类牙列缺损患者47例,采用硅橡胶印模灌制超硬石膏(传统模型组)和3shape Trios口内扫描仪制取数字化印模结合3D打印树脂模型(数字化模型组)两种方法为每一例患者制作两副铸造可摘局部义齿,检查义齿初戴过程中固位体、大连接体和基托与口内软硬组织的适合性和咬合的准确性并评分,对各项计分结果行χ2检验。结果:数字化模型组制作的可摘局部义齿固位体的适合性和咬合准确性优于传统模型组,差异有统计学意义(P<0.05);两组可摘局部义齿大连接体和基托的适合性差异无统计学意义(P>0.05)。结论:数字化印模结合3D打印树脂模型可提高可摘局部义齿与天然牙的适合性及义齿初戴时咬合的准确性。
Objective:To investigate the influence of digital impression on the clinical adaptation of removable partial dentures(RPDs).Methods:Forty-seven patients with dentition defect of Kennedy ClassⅢor ClassⅣ were selected,and two RPDs were made for each patient,respectively.The patients were taken impression by silicon rubber(the traditional model group)or intraoral digital scanning(the digital model group).The adaptation of retainers,major connectors,base plates,and the occluding accuracy of RPDs were examined and scored.The scoring results were analyzed byχ2 test.Results:The retainers' adaptation and occluding accuracy of RPDs fabricated by digital models were better than those fabricated by traditional models(P<0.05),and the adaptation of major connectors and base plates fabricated by two methods was not different(P>0.05).Conclusion:The adaptation of RPDs to natural teeth and the occluding accuracy at denture placement could be improved by digital impression combined with3 Dprinting resin model.
Objective:To investigate the influence of digital impression on the clinical adaptation of removable partial dentures(RPDs).Methods:Forty-seven patients with dentition defect of Kennedy ClassⅢor ClassⅣ were selected,and two RPDs were made for each patient,respectively.The patients were taken impression by silicon rubber(the traditional model group)or intraoral digital scanning(the digital model group).The adaptation of retainers,major connectors,base plates,and the occluding accuracy of RPDs were examined and scored.The scoring results were analyzed byχ2 test.Results:The retainers' adaptation and occluding accuracy of RPDs fabricated by digital models were better than those fabricated by traditional models(P<0.05),and the adaptation of major connectors and base plates fabricated by two methods was not different(P>0.05).Conclusion:The adaptation of RPDs to natural teeth and the occluding accuracy at denture placement could be improved by digital impression combined with3 Dprinting resin model.
引文
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[10]苏庭舒,孙健,陈丽萍.口内数字化印模扫描重复性的研究[J].口腔颌面修复学杂志,2014,15(5):291-296.
[11] Ender A,Mehl A.Full arch scans:conventional versus digital impression-an in-vitro study[J].Int J Comput Dent,2011,14(1):11-21.
[2]黄婉仪,姜慕舟,战德松.口内扫描仪结合3D打印技术单冠固定修复临床研究[J].中国实用口腔科杂志,2017,10(5):279-282.
[3]赵铱民.口腔修复学[M].第7版.北京:人民卫生出版社,2012.263-264.
[4]杨旭,谭建国,李德利,等.齿科铸造用纯钛制作义齿支架的临床效果评价[J].北京大学学报(医学版),2010,42(1):60-62.
[5]苏庭舒,孙健.口内数字化印模技术[J].中华临床医师杂志(电子版),2012,6(19):5780-5782.
[6] Syrek A,Reich G,Hagedorn B,et al.Clinical evaluation of all-ceramic crowns fabricated from intraoral digital impressions based on the principle of active wavefront sampling[J].J Dent,2010,38(7):553-559.
[7]谢铁伦,沈刚.全口牙列口内扫描的精确性与可重复性分析[J].上海口腔医学,2016,25(5):593-599.
[8] Cetik S,Bahrami B,Fossoyeux L,et al.Adaptation of zirconia crowns and bridges created by conventional versus optical impression:in vitro study[J].J Adv Prosthodont,2017,9(3):208-216.
[9]孙玉春,孙儒,邓珂慧,等.全口义齿数字化修复技术的研发和应用进展[J].中华口腔医学杂志,2018,53(1):60-65.
[10]苏庭舒,孙健,陈丽萍.口内数字化印模扫描重复性的研究[J].口腔颌面修复学杂志,2014,15(5):291-296.
[11] Ender A,Mehl A.Full arch scans:conventional versus digital impression-an in-vitro study[J].Int J Comput Dent,2011,14(1):11-21.