Please assess the completion status of the following clinical trial:

Trial Title: Metronidazole as an Adjunct of Non- Surgical Treatment of Peri-implantitis

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

Eligibility Criteria:
Inclusion Criteria:~* Older than 18 years.~* Presence of at least 1 implant diagnosed with peri-implantitis (Presence of BOP and/or suppuration, with 2 mm of detectable bone loss after initial remodeling, and PD≥ 4 mm as defined by Daubert et al. 2015).~* Absence of implant mobility.~* History of taking systemic antibiotics in the preceding 3 months.~* No systemic pathology that contraindicated the completion of treatment.~* The patient understands the treatment and willing to comply.~* The patient is willing to give written informed consent and can do~Exclusion Criteria:~* Pregnant.~* Metronidazole allergies~* Patients on treatment with bisphosphonates.~* Uncontrolled periodontal disease.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Metronidazole 250mg (Type: ACTIVE_COMPARATOR): Systemic antibiotic: Metronidazole 250mg , 2 capsules three times a day, for 7 days.
- Placebo (Type: PLACEBO_COMPARATOR): Placebo: same shape, size and dosis as test

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