Many patients have a lot of concerns about scaling, especially when they don’t understand why, as a prosthodontist, I always advise my patients to have their teeth cleaned before I do the preparation, is it really a superfluous task? Is it really superfluous? Is it a deliberate attempt to make the patient make an extra trip? To give you a simple phenomenon, has anyone found their gums on fire (in fact, gum inflammation), brushing teeth or eating gums bleeding, the gums are very fragile, gently touch the blood will come out, serious people are also very difficult to stop. Imagine what such fragile gums will be like during the preparation of the tooth. The blood will flood over the edges of the tooth, affecting the accuracy of the impression and eventually the fit of the restoration, and laying a hidden danger for the patient’s periodontal health. If the gums are healthy then both the preparation of the tooth and the view of the impression taking process are very clean and the accuracy of the restoration can be greatly guaranteed. Therefore, if your gums are inflamed, it is recommended that periodontal treatment be performed before restoration. Gingival inflammation on the right side Blood exuded from the gingival preparation and flooded the edges of the tooth despite adequate hemostasis Gingival health on the left upper central incisor Gingival integrity and absence of exudate in the dental preparation (labial view) Gingival integrity and absence of exudate in the dental preparation (cemental view) Fine impression material fully entered the gingival sulcus Prepared dental model with clear 360 degree margins