An interventional study of digital impression and conventional impression in Edentulous Jaw, sponsored by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University. Enrolling by invitation at 1 site in China. Open to participants aged 30 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-06-10.
Sponsored by Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University · Not applicable, Interventional, and Treatment
The goal of this clinical trial is to determine whether the accuracy of digital impressions is comparable to conventional impressions. It will also learn about the clinical effect of different method. The main questions it aims to answer are: Does drug ABC lower the number of times participants need to use a rescue inhaler? What medical problems do participants have when taking drug ABC? Researchers will compare digital impression to conventional impression to see if the accuracy of the digital method.
Participants will:
Take an impression with one of the methods Visit the clinic a total of 6 times for checkups and tests
Exclusion Criteria:
Procedure: digital impression
Procedure: conventional impression
complete arch implant impression with intraoral photogrammetry
conventional open tray splint impression
Vision and tactile score for evaluating passive fit of metal framework
Five aspects are evaluated, each aspect is scored as 0 or1. The score ranges from 0 to 5 points. 1、Framework rocking upon seating？2、 Gap assessment with single screw test. The method utilized an explorer with an approximately Ø60-µm tip to evaluate the margins of the metal framework.3、 Gap assessment with all screws tightened. 4、Are the screws threading smoothly? 5、Radiographic assessment of framework fit (check for gaps).
Time frame: Periprocedural: At the time of the titanium framework try-in: the try-in of the framework to the patient is before final delivery. (The delivery of the final prosthesis is the baseline)
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Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University