Results Wedge-shaped defects in the first premolar were commonly seen in elderly patients, moreover, the disc wedge and type 2 degrees were more common in the lack of damage.

结果老年牙齿楔状缺损好发于第一双尖牙，且楔缺损害以盘型、2度更为常见；

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Results Wedge-shaped defects in the first premolar were commonly seen in elderly patients, moreover, the disc wedge and type 2 degrees were more common in the lack of damage.

结果老年牙齿楔状缺损好发于第一双尖牙，且楔缺损害以盘型、2度更为常见；

youdao