Please assess the completion status of the following clinical trial:

Trial Title: Effect of Hyaluronic Acid on Perimplantitis

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Implants with at least one year of functional load.~* Implants diagnosed with peri-implantitis according to the criteria of the Association of Dental Implantology.~Exclusion Criteria:~* Previous peri-implantitis treatment.~* Pregnancy or breast-feeding.~* Neoplastic disease.~* Antibiotic treatment during the previous month.

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

Study Arms:
- Test Group (Type: EXPERIMENTAL): Hyaluronic acid gel 0.2% at baseline and later home applications by the patients during 45 days.
- Control 1 Group (Type: SHAM_COMPARATOR): Hydroxypropyl guar based gel, without any biological effect.
- Control 2 Group (Type: NO_INTERVENTION): No gel application, only standard perimplantitis treatment.

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