Table 2.

Studies conducting biological glycaemic testing in dental setting excluded from systematic review and justification

Excluded study	Study objective and justification for exclusion
1. Beikler et al. (2002)32	Study objective: compare HbA1C POC testing performed on blood obtained from gingival crevicular fluid and capillary fingerstick using glucose level self-monitoring device
	Why excluded: study enrolled patients with known diabetic status including patients with DM dx
2. Ojehanon and Akhiobare (2006)33	Study objective: screen oral health in patients with blood glucose > 126 mg/dL to determine PD status; periapical periodontitis was most frequent diagnosis
	Why excluded: due to lack of POC blood test; study screened urine samples with dip stick and triaged to medical setting for further testing
3. Nibali et al. (2007)34	Study objective: monitoring dysmetabolic status in dental patients with severe PD
	Why excluded: glycaemic measures were not made at POC
	Screening was performed on urine and blood
4. Barasch et al. (2013)35	Study objective: screening for dysglycaemia at POC in the dental setting
	Why excluded: due to inclusion of patients with DM dx and pre-DM dx
5. Miller et al. (2014)36	Study objective: comparison of glycaemic level determination by a commercial laboratory to patient self-report
	Why excluded: glycaemic analyses were not conducted at POC in dental settings
6. Srinivasa et al. (2015)37	Study objective: compare POC HbA1C levels in patients with or without PD
	Why excluded: study did not report on DM status of study patients
7. Harase et al. (2015)38	Study objective: observe POC HbA1C levels among dental patients with PD stratified by PD severity
	Why excluded: only subjects with a DM dx were included

DM, diabetes mellitus; dx, diagnosis; HbA1C, haemoglobin A1C; PD, periodontal disease; POC, point-of-care.