Please assess the completion status of the following clinical trial:

Trial Title: Basic Study of Fabricating Biomorphic Crowns

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* single crown restoration needed in posterior quadrants~* the antagonist of the abutment tooth is purely natural or received minimum restorations that does not change its morphology too much~* no orthodontic treatment history~* stable occlusion~* no parafunctional movements existed~Exclusion Criteria:~* sequential crown restorations needed~* the morphology of the antagonist of the abutment tooth has been largely changed by previous treatment~* no contact exists between the abutment tooth and its antagonist~* orthodontic treatment history~* unstable occlusion~* existed parafunctional movements~* participated in other clinical studies

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: t

Study Arms:
- FGP design (FGP, AVR) (Type: EXPERIMENTAL): use functional generated path to execute different occlusal surface designs of the artificial crown and evaluate its efficacy
- conventional design (CON) (Type: NO_INTERVENTION): use conventional method to execute different occlusal surface designs of the artificial crown and evaluate its efficacy

Based on this trial design, predict the completion outcome and termination type (if applicable).