Please assess the completion status of the following clinical trial:

Trial Title: Oral Hygiene Procedures on Reduction of Oral Malodor

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

Eligibility Criteria:
Inclusion Criteria:~* Clinical diagnosis of oral malodor~* At least 20 functional teeth~* No systemic diseases~* No severe dental diseases~Exclusion Criteria:~* Habit of smoking and betel quid chewing~* Oral malodor by food and other craniofacial abnormalities~* Current use of any kind of mouthwash

- Gender: MALE
- Minimum Age: 18 Years
- Maximum Age: 30 Years
- Healthy Volunteers: t

Study Arms:
- group 1: drug (Type: EXPERIMENTAL): Drug: group 1: drug: chlorine dioxide 12ml chlorine dioxide (ClO2) mouthwash two times per day, for three consecutive weeks
- group 2: device: (Type: EXPERIMENTAL): group 2: device: small tooth brush for tongue cleaning small tooth brush for tongue cleaning

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