Please assess the completion status of the following clinical trial:

Trial Title: Casein Phosphopeptide--amorphous Calcium Phosphate on Human Enamel Subjected to in Vivo Acid Attacks

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* 18 to 60 years of age and in good general health~* Dental erosion and wear degree is 0-1~Exclusion Criteria:~* Systemic diseases or oral mucosal disorders~* Current orthodontic treatment~* Pregnancy~* Known allergies to the experimental drink~* Had been given drugs which lead to dry oral more regularly within half a year

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 60 Years
- Healthy Volunteers: t

Study Arms:
- CPP-ACP (Type: EXPERIMENTAL): Tooth mousse (GC, Japan) application on the specimen surface for 3 min.
- Deionized water (Type: PLACEBO_COMPARATOR): Deionized water application on the specimen surface for 3 min

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