1.Minimal invasive microscopic tooth preparation in esthetic restoration: a specialist consensus.
Haiyang YU ; Yuwei ZHAO ; Junying LI ; Tian LUO ; Jing GAO ; Hongchen LIU ; Weicai LIU ; Feng LIU ; Ke ZHAO ; Fei LIU ; Chufan MA ; Juergen M SETZ ; Shanshan LIANG ; Lin FAN ; Shanshan GAO ; Zhuoli ZHU ; Jiefei SHEN ; Jian WANG ; Zhimin ZHU ; Xuedong ZHOU
International Journal of Oral Science 2019;11(3):31-31
By removing a part of the structure, the tooth preparation provides restorative space, bonding surface, and finish line for various restorations on abutment. Preparation technique plays critical role in achieving the optimal result of tooth preparation. With successful application of microscope in endodontics for >30 years, there is a full expectation of microscopic dentistry. However, as relatively little progress has been made in the application of microscopic dentistry in prosthodontics, the following assumptions have been proposed: Is it suitable to choose the tooth preparation technique under the naked eye in the microscopic vision? Is there a more accurate preparation technology intended for the microscope? To obtain long-term stable therapeutic effects, is it much easier to achieve maximum tooth preservation and retinal protection and maintain periodontal tissue and oral function health under microscopic vision? Whether the microscopic prosthodontics is a gimmick or a breakthrough in obtaining an ideal tooth preparation should be resolved in microscopic tooth preparation. This article attempts to illustrate the concept, core elements, and indications of microscopic minimally invasive tooth preparation, physiological basis of dental pulp, periodontium and functions involved in tool preparation, position ergonomics and visual basis for dentists, comparison of tooth preparation by naked eyes and a microscope, and comparison of different designs of microscopic minimally invasive tooth preparation techniques. Furthermore, a clinical protocol for microscopic minimally invasive tooth preparation based on target restorative space guide plate has been put forward and new insights on the quantity and shape of microscopic minimally invasive tooth preparation has been provided.
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