Please assess the completion status of the following clinical trial:

Trial Title: Effectiveness of Dental Caries Arrest Treatment in Primary Teeth Using AgNO3 Followed by NaF Varnish

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Kindergarteners who have joined our outreach dental service will be invited to join this study. Preschool children aged 3-4 years who have tooth decay and are attending the first year of kindergarten will be invited to join this study.~Exclusion Criteria:~* Children who are uncooperative and difficult to manage, have major systemic diseases, or are on long-term medication will be excluded.

- Gender: ALL
- Minimum Age: 3 Years
- Maximum Age: 5 Years
- Healthy Volunteers: f

Study Arms:
- Silver nitrate (Type: EXPERIMENTAL): Biannual application of 25% AgNO3 solution followed by 5% NaF varnish.
- Silver diamine fluoride (Type: ACTIVE_COMPARATOR): Biannual application of 38% SDF solution followed by placebo varnish.

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