Please assess the completion status of the following clinical trial:

Trial Title: A Clinical Study to Evaluate Experimental Children's Toothpastes in an In-Situ Caries Model

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE3
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Healthy males and females aged 11 to 14 inclusive who have an unstimulated salivary flow rate of at least 0.2 mL/minute and a stimulated salivary flow rate of at least 0.8 mL/minute (Screening Visit 1).~Exclusion Criteria:~-

- Gender: ALL
- Minimum Age: 11 Years
- Maximum Age: 14 Years
- Healthy Volunteers: t

Study Arms:
- Fluoride free toothpaste (Type: PLACEBO_COMPARATOR): toothpaste with no fluoride
- 1426ppm Fluoride Toothpaste (Type: EXPERIMENTAL): Experimental toothpaste containing 1426 ppm Fluoride
- 1000 ppm Fluoride Toothpaste (Type: EXPERIMENTAL): Experimental toothpaste containing 1000 ppm Fluoride
- 500 ppm Toothpaste (Type: EXPERIMENTAL): Experimental toothpaste containing 500 ppm Fluoride

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