Please assess the completion status of the following clinical trial:

Trial Title: Effect of Steroid for the Postoperative Swelling After Orthognathic Surgery

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

Eligibility Criteria:
Inclusion Criteria:~* patients who receive LeFort I osteotomy of maxilla and bilateral sagittal split osteotomy of mandible~Exclusion Criteria:~* patients with local or systemic diseases~* patients taking aspirin, steroid, nonsteroidal anti-inflammatory drugs, or having contraindications for steroids~* patients with history of psychosis~* patients with active or chronic infection~* patients with active or latent peptic ulcer

- Gender: ALL
- Minimum Age: 15 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Dexamethasonelow-dose (Type: ACTIVE_COMPARATOR): 5mg
- Dexamethasonehigh-dose (Type: EXPERIMENTAL): 15mg

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