. Author manuscript; available in PMC: 2022 Jan 28.

Published in final edited form as: Oral Dis. 2019 Apr 21;25(5):1403–1413. doi: 10.1111/odi.13097

Table 1.

Summary of treatment and sample collection schedule

Event	Screening	Visit 1 Vit D or Placebo (Baseline)	Visit 2 Compliance testing/Refill (4 wks from Baseline)	Visit 3 Compliance testing/Refill (8 wks from Baseline)	Visit 4 Compliance testing/Refill (12 wks from Baseline)	Visit 5 (8 wks from SRP) (16 wks from Baseline)
Medical history	☓
Informed consent	☓			☓
Intensive SRP				☓
25(OH)D		☓		☓		☓
Peripheral blood, Whole saliva		☓	☓	☓	☓
Gingival biopsy		☓		☓		☓
Vit D supplementation		☓	☓	☓	☓
Sub-gingival plaque sample		☓		☓		☓
Check gingival healing				☓		☓