Table 3.

Selected references on use of photonics/optical spectroscopy-based studies on saliva for clinical and other applications. (Other disorders)

1	SERS	Saliva. Sjögren's syndrome (SjS)	2020 [Moisoiu 2020]	96.5%
2	ATR-IR	Periodontal Diseases	2020 [Beyer-Hans et al. 2020]	_
3	ATR-FTIR	Bio fluids including saliva; Review, clinical applications	2020 [Naseer et al. 2020]	_
4	Raman	Amyotrophic Lateral Sclerosis (ALS) diagnosis	2020 [Carlomagno et al. 2020]	_
5	SERS	Periodontitis, Sialic Acid (SA)	2019 [Hernández-Cedillo et al. 2019]	69.6%
6	SERS	To evaluate the activity of urease in saliva. Dental caries; helicobacter pylori infection	2019 [Hu et al. 2019]	L.O.D: 2.35 μg/ml
7	SERS	biomarkers of bronchial inflammation in the saliva of children with asthma	2019 [Zamora-Mendoza et al. 2019]	85%
8	ATR-FTIR	Chronic kidney disease	2019 [Rodrigues et al. 2019a, b]	92.8%
9	FTIR	Burning Mouth Syndrome	2019 [Rodrigues et al. 2019a, b]	_
10	FTIR	Neonatal sepsis using saliva	2019 [Yunanto et al. 2019]	_
11	ATR-FTIR	Multiple dental caries	2018 [Seredin et al. 2018]	_
12	Plasmonics	Hepatitis B	2017 [Riedel et al. 2017]	_
13	IR	Saliva in healthy, chronic, and aggressive periodontitis	2017 [Saranya 2017]	_
14	Plasmonics	Hepatitis B	2016 [Riedel et al. 2016]	_
15	FTIR	Differentiation of chronic and aggressive Periodontitis	2016 [Simsek Ozek et al. 2016]	82%
16	ICP OES & ICP MS	Periodontal diseases.	2016 [Herman et al. 2016]	L.O.D: 0.007 μg/l for Pb and 0.21 μg/l for Fe
17	Raman	Myocardial Infarction. Saliva spectroscopy; Multivariate analysis	2015 [Cao et al. 2015]	80.04%
18	FTIR	Saliva proteomic components in psoriatic and diabetic patients	2015 [Bottoni et al. 2015]	_
19	Fluorescence	Lithium in Bipolar disorder	2011 [Kim et al. 2011]	_
20	SPR	Mucin, Gingivitis, Periodontitis	2007 [Fernández-González et al. 2007]	_