An embodiment of the present invention relates to a tooth shape classifying and dental prosthesis shape guiding method for a smart device which provides a dental prosthesis shape guide to a patient who is to receive prosthetic treatment, the method comprising: a prosthetic tooth sample image classifying step of classifying a plurality of prosthetic tooth sample images according to the shapes of gingival lines and storing the same in a prosthetic tooth sample image database； a patient tooth image generating step of generating patient tooth images by capturing images of a patient's teeth or loading previously stored pictures or moving pictures of the patient's teeth； a to-be-treated tooth image selecting step of selecting, among the patient tooth images, a to-be-treated tooth image which is an image of a tooth to be prosthetically treated； a prosthetic tooth sample image selecting step of displaying the prosthetic tooth sample images stored in the prosthetic tooth sample image database, and selecting, from the displayed sample images, a prosthetic tooth sample image for replacing the to-be-treated tooth image； and an expected prosthetically treated tooth image outputting step of generating an expected prosthetically treated tooth image by replacing the to-be-treated tooth image by the prosthetic tooth sample image.L'un des modes de réalisation de la présente invention concerne un procédé de classification de forme de dent et de guidage de forme de prothèse dentaire destiné à un dispositif intelligent qui fournit un guide de forme de prothèse dentaire à un patient devant recevoir un traitement prothétique, le procédé comprenant : une étape de classification d'image d'échantillon de dent prothétique consistant à classer une pluralité d'images d'échantillon de dent prothétique selon les formes des lignes gingivales et de les stocker dans une base de données d'images d'échantillon de dent prothétique ； une étape de génération d'image de dent de patient consistant à génére
