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Updated: Feb 14, 2026

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans
Published on: July 12, 2022
[Research status of tooth preparation quantitative guide technique]
1Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
Achieving precise, quantitative tooth preparation in prosthodontics is crucial for treatment success. This review details visual, passive, and active guidance techniques, including advanced CNC and laser systems, for better dental restorations.
Area of Science:
- Dentistry
- Prosthodontics
- Dental Technology
Background:
- Tooth preparation quality directly impacts prosthodontic treatment outcomes.
- Precise and quantitative tooth preparation remains a key objective in dental prosthodontics.
- Existing guidance techniques include visual, passive, and active constraint methods.
Purpose of the Study:
- To comprehensively review quantitative tooth preparation guide techniques.
- To summarize the application effects and limitations of various guidance methods.
- To provide references for future research and clinical applications in dental prosthodontics.
Main Methods:
- Review of existing literature on tooth preparation guidance techniques.
- Categorization of techniques into visual, passive constraint, and active constraint (automated) guidance.
- Inclusion of advanced technologies like CNC cutting systems, robotics, and ultra-short pulse lasers (USPL).
Main Results:
- Identified silicon rubber index (visual), guide plate (passive), and CNC systems (active) as representative techniques.
- Highlighted recent advancements utilizing robot systems and numerical control USPL.
- Discussed the application effects and limitations of reviewed techniques.
Conclusions:
- Quantitative guide techniques are essential for improving tooth preparation accuracy in prosthodontics.
- Advanced technologies offer potential for enhanced precision and automation.
- Further research and clinical evaluation are needed to optimize these techniques for widespread application.
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