Please assess the completion status of the following clinical trial:

Trial Title: Prevention of Enamel Demineralization by Use of K18-smooth Surface Sealant

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Orthodontic patients at the Department of Orthodontics Clinic, School of Dental Medicine, University of Colorado who agree to consent to this study.~* Orthodontic treatment plans that include fixed appliances from the second premolar to second premolar in both arches.~* Orthodontic treatment plans that include extractions of at least 3 bicuspids at about 1 month after bracket placement.~* The patient has adequate oral hygiene~Exclusion Criteria:~* Evidence of decalcification or restorations on any of the premolars planned for extraction prior to orthodontic treatment,~* Pregnant women (self reported)~* Any condition that contraindicates orthodontic treatment,~* Not willing to consent to the study.

- Gender: ALL
- Minimum Age: 12 Years
- Maximum Age: 89 Years
- Healthy Volunteers: t

Study Arms:
- UDMA-K18 (Type: EXPERIMENTAL): UDMA-K18 smooth surface sealant
- UDMA-control (Type: PLACEBO_COMPARATOR): UDMA smooth surface sealant without K18
- Negative control (Type: NO_INTERVENTION): No intervention to provide baseline

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