The invention relates to a method for generating a three-dimensional digital guide model of a physical preparation guide for a dental preparation of a patient's jaw. A three-dimensional digital jaw model and a definition of tooth positions is received. The tooth positions comprise one or more target tooth positions for one or more artificial teeth. The three-dimensional digital jaw model is overlaid with a three-dimensional digital corrugated surface. The overlaying comprises adjusting a waveform of the corrugation with local minima and maxima, such that the local minima are arranged at the positions of the teeth, while the local maxima are arranged between the positions of the teeth. The three-dimensional digital guide model is generated using the three-dimensional digital corrugated surface with the adjusted waveform.

The present disclosure a manufacture method of axial direction and depth checking guide plate for implanting, comprises the following steps: S1: obtaining dentition data by an optical scanner, obtaining a preoperative model; virtually arranging the teeth to obtain a virtual waxing; taking Cone Beam Computed Tomography to obtain the jaw data; S2: determining the type and specification of implant, adjusting the three-dimensional position of the implant; S3: customizing an abutment, and obtaining the abutment data and model data after fitting of the dentition data and the jaw data; S4: constructing abutment cylindrical features, deviating to the labial/buccal side and lingual/palatal side respectively, and constructing the offset cylindrical features again; S5: creating the indicator rod, and fitting with the labial/buccal and lingual/palatal prototype separately to obtain the definitive indicator rod data; S6: designing an occlusal plate and connecting with the indicator rod, completing design of the guide plate, and 3D printing.

Embodiments may provide a method for measuring a site of bone graft and an amount of bone graft around a virtual fixture. To this end, according to embodiments, a type of bone defect may be determined based on bone density information of an alveolar bone around a virtual fixture, and the site of bone graft and the amount of bone graft may be determined according to the determined type of bone defect. According to embodiments, there is an advantageous effect that accurate information can be provided to a user to enable precise grafting during implant surgery.