Please assess the completion status of the following clinical trial:

Trial Title: Evaluation of Efficacy of Experimental Gel to Foam Dentifrices in Dental Erosion

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

Eligibility Criteria:
Inclusion Criteria:~* General and Oral Health: Good general health with (in the opinion of the investigator) no clinically OST and OHT examinations.~* Oral Requirements:~  * An intact maxillary dental arch suitable for the retention of the palatal appliance and an intact mandibular dental arch. Subjects may have fixed bridges replacing missing teeth.~ * A gum base stimulated whole saliva flow rate ≥ 0.8 g/min and an unstimulated whole saliva flow rate ≥ 0.2 g/min.~* Contraception: Women of childbearing potential who are, in the opinion of the investigator, practicing a reliable method of contraception.~Exclusion Criteria:~* Oral Health:~  * Current active caries or periodontal disease that may compromise the study or the health of the subjects.~ * Lesions of the oral cavity that could interfere with the study evaluations, including severe gingivitis, grossly carious lesions, periodontitis and other severe periodontal disease.~* Allergy/Intolerance: Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.~* Clinical Study/Experimental Medication:~  * Participation in another clinical study or receipt of an investigational drug within 30 days of the screening visit~ * Previous participation in this study~* Substance abuse: Recent history (within the last year) of alcohol or other substance abuse.~* Pregnancy: Women who are pregnant or who are intending to become pregnant over the duration of the study~* Breast-feeding: Women who are breast-feeding

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

Study Arms:
- NaF/KNO3 toothpaste, Low RDA (Type: EXPERIMENTAL): Participants to brush with 1.5 g of low RDA gel to foam toothpaste containing 1450 ppm F - EU level as NaF. All study treatments contain 5% weight by weight (w/w) KNO3.
- NaF/KNO3 toothpaste, Medium RDA (Type: EXPERIMENTAL): Participants to brush with 1.5 g of medium RDA gel to foam toothpaste containing 1450 ppm F - EU level as NaF. All study treatments contain 5% w/w KNO3.
- NaF/KNO3 toothpaste (Type: ACTIVE_COMPARATOR): Participants to brush with 1.5 g of NaF/KNO3 toothpaste containing 1450 ppm F - EU level as NaF. All study treatments contain 5% w/w KNO3.
- No fluoride/KNO3 toothpaste (Type: PLACEBO_COMPARATOR): Participants to brush with a fluoride free toothpaste (0 ppmF). All study treatments contain 5% w/w KNO3.

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