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中华口腔医学研究杂志(电子版)

中华口腔医学研究杂志(电子版) ›› 2023, Vol. 17 ›› Issue (04) : 285 -291. doi: 10.3877/cma.j.issn.1674-1366.2023.04.009

论著

新型硅橡胶印模消毒流程对模型精度的影响
张佳园, 魏凌飞, 刘晶, 邬春兰, 叶丽娟, 于德栋†()   
  1. 上海交通大学医学院附属第九人民医院口腔第二门诊部，上海交通大学口腔医学院，国家口腔医学中心，国家口腔疾病临床医学研究中心，上海市口腔医学重点实验室，上海市口腔医学研究所，上海　201999；杭州医学院存济口腔医学院　杭州医学院附属口腔医院，杭州　310012
    滨州医学院附属烟台口腔医院口腔种植科，烟台　264003
    上海交通大学医学院附属第九人民医院口腔第二门诊部，上海交通大学口腔医学院，国家口腔医学中心，国家口腔疾病临床医学研究中心，上海市口腔医学重点实验室，上海市口腔医学研究所，上海　201999
  • 收稿日期:2022-11-09 出版日期:2023-08-01
  • 通信作者: 于德栋

Effect of new silicone rubber impression disinfection process on model accuracy

Jiayuan Zhang, Lingfei Wei, Jing Liu, Chunlan Wu, Lijuan Ye, Dedong Yu†()   

  1. Department of Second Dental Center, Shanghai Ninth People′s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 201999, China; Hangzhou Medical College·Cunji College of Stomatology, Affiliated Stomatological Hospital of Hangzhou Medical College, Hangzhou 310012, China;
    Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Department of Oral Implantation, Yantai 264003, China
    Department of Second Dental Center, Shanghai Ninth People′s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 201999, China;
  • Received:2022-11-09 Published:2023-08-01
  • Corresponding author: Dedong Yu
  • Supported by:
    National Natural Science Foundation of China(52175422, 32101094); Shanghai Municipal Health Commission Health Industry Clinical Research Project(202240194); "Cross" Research Fund Project of the Ninth People′s Hospital Affiliated to the Medical College of Shanghai Jiaotong University(JYJC202114); 2021 "Seed Fund" Project(JYZZ145)
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引用本文：

张佳园, 魏凌飞, 刘晶, 邬春兰, 叶丽娟, 于德栋. 新型硅橡胶印模消毒流程对模型精度的影响[J]. 中华口腔医学研究杂志(电子版), 2023, 17(04): 285-291.

Jiayuan Zhang, Lingfei Wei, Jing Liu, Chunlan Wu, Lijuan Ye, Dedong Yu. Effect of new silicone rubber impression disinfection process on model accuracy[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2023, 17(04): 285-291.

目的

评价新型口腔印模清洗消毒流程对于硅橡胶材料牙科印模精度的影响。

方法

对16名青年志愿者制取硅橡胶口腔印模（每人上下颌各2次），采用口内扫描仪对牙列进行扫描（每人上下颌各1次），将得到的扫描数据作为参考数据。每位志愿者的2对硅橡胶印模分别编号为1组和2组，其中1组不消毒，2组按照新型硅橡胶印模清洗消毒流程对口腔印模进行处理。将受试者的所有口腔印模进行标准的石膏灌注和脱模，并通过仓式扫描仪对石膏模型进行扫描，获得测试数据。分别配准对比分析每名志愿者的测试数据与参考数据，将误差的均方根（RMS）作为评价测试模型与参考模型间偏差的指标参数。比较各组模型之间的数值偏差并对三维偏差色谱图进行可视化分析，从多个维度分析比较模型精度差异。

结果

上颌牙列消毒前后模型RMS偏差分别为（0.41 ± 0.21）和（0.49 ± 0.19） mm；下颌牙列消毒前后模型RMS偏差分别为（0.46 ± 0.26）和（0.38 ± 0.13） mm。硅橡胶印模上下颌牙列消毒前后模型精度差异均无统计学意义（t上颌 = -1.139，P上颌 = 0.272；t下颌 = 1.113，P下颌 = 0.283）。

结论

该新型硅橡胶口腔印模清洗消毒流程对模型精度没有显著影响，在临床实践操作中具有良好的可行性。

关键词: 口腔印模, 消毒流程, 模型精度, 硅橡胶印模
Objective

To evaluate the effect of a new oral impression cleaning-disinfection process on the accuracy of dental impressions made of silicone rubber materials.

Methods

Silicone rubber oral impressions were made on 16 young volunteers (upper and lower jaws for each person twice), and the dentition was scanned using an intraoral scanner (upper and lower jaws for each person twice). The obtained scanning data were used as reference data. The two pairs of silicone rubber impressions of each volunteer were numbered as Group 1 and Group 2. The impressions in Group 1 were not disinfected, and those in Group 2 were treated by the new silicone rubber impression cleaning and disinfection process. All the oral impressions of the subjects were perfused with plaster and demolded in the standard way, and the plaster models were scanned using a laboratory scanner to obtain test data. Registration and comparative analysis were carried out for the test and reference data of each volunteer separately, and the root mean square (RMS) of the error was taken as an indicator parameter to evaluate the deviation between the test and reference models. The numerical deviation between the two groups was compared. Visual analysis on the three-dimensional deviation chromatogram was performed, and the difference in model accuracy from multiple dimensions was analyzed.

Results

The RMS deviations of the models before and after disinfection of the maxillary dentition were (0.41 ± 0.21) mm and (0.49 ± 0.19) mm. The RMS deviations of the models before and after disinfection of the mandibular dentition were (0.46 ± 0.26) mm and (0.38 ± 0.13) mm. There was no significant difference in the accuracy of the model of the upper and lower dentitions made from the silicone rubber impression before and after disinfection (tupper jaw = -1.139, Pupper jaw = 0.272; tlower jaw = 1.113, Plower jaw = 0.283) .

Conclusions

The new silicone rubber oral impression cleaning-disinfection process had no significant impact on the accuracy of model. This new disinfection process had good feasibility in clinical practice.

Key words: Dental impression, Disinfection process, Model accuracy, Silicone rubber impression
图1 数字化模型的数据处理（以上颌为例）　A：将数字化模型沿龈缘线分界进行剪切，切除临床牙冠以外部分；B：剪切后得到的全牙弓数字化模型。
图2 参考模型与测试模型利用右侧上颌第一、二磨牙解剖标志点进行对齐（以上颌为例）
表1 硅橡胶印模材料上下颌牙列消毒前后模型间RMS偏差
牙列 例数 RMS偏差（mm， ± s） t值 P值
1组（未消毒） 2组（消毒）
上颌 16 0.41 ± 0.21 0.49 ± 0.19 -1.139 0.272
下颌 16 0.46 ± 0.26 0.38 ± 0.13 1.113 0.283
图3 硅橡胶材料消毒前后牙列偏差三维分析色谱图　A：上颌未消毒；B：上颌消毒；C：下颌未消毒；D：下颌消毒。
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