Effect of new silicone rubber impression disinfection process on model accuracy

doi:10.3877/cma.j.issn.1674-1366.2023.04.009

Chinese Journal of Stomatological Research(Electronic Edition) ›› 2023, Vol. 17 ›› Issue (04): 285-291. doi: 10.3877/cma.j.issn.1674-1366.2023.04.009

• Original Article • Previous Articles Next Articles

Effect of new silicone rubber impression disinfection process on model accuracy

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

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 Online:2023-08-01 Published:2023-08-14
Contact: 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)

Abstract

Abstract:

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 (t_{upper jaw} = -1.139, P_{upper jaw} = 0.272; t_{lower jaw} = 1.113, P_{lower 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

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.

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References 30

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