Table 1.

Documentation of keywords according to the PIRDS concept (Campbell et al. 2015)

Population/problem (P)		Index test (I)		Reference test (R)		Diagnose and study type (D/S)
Caries Decay AND Occlusal Fissure	AND	Visual Clinical Clinically Inspect* ICDAS Bitewing Conventional Radiography Digital Radiography Radiogra* Film Analo* X ray Xray Speed Roentge* Radiology Radiol* Laser fluorescence Diagnodent FOTI DiFOTI Di(FOTI) Fiber Fibre Transillumination Optic Opti* QLF Quantit* Laser Light Induced	AND	Validity Validation Valid* Accuracy Sensitivity Specificity SE SP ROC Az Reproducibility Reproducib* Reliab* Reliability Kappa Threshold Cut off Performance Histolog* Micro Micro computed CT *CT	AND	Systemati* Review Meta-Analysis Diagnos* Diagnost* Detection Detect Detect* Assessm* Vivo Vitro Study Studies

MeSH terms which were used to search the PubMed and EMBASE databases: ((Caries or Decay) AND (Occlusal or Fissure) AND (Visual or Clinical or Clinically or Inspect* or ICDAS or Ekstrand or Bitewing or Conventional or Digital or Radiography or Film or Radiogra* or Analo* or Speed* or X Ray or Xray or Radiology or Radiol* or Roentge* or Laser or Fluorescence or Diagnodent or FOTI or DiFOTI or Fiber or Fibre or Transillumination or Optic or Opti* or QLF or Quantit* or Laser or Light or Induced) AND (Validity or Validation or Valid* or Accuracy or Sensitivity or Specificity or SE or SP or ROC or Az or Reproducib* or Reproducibility or Reliability or Reliab* or Kappa or Threshold or Cutoff or Performance or Histolog* or Micro or Micro-computed or CT or *CT) AND (Systemat* or Review or Meta-Analysis or Diagnos* or Diagnost* or Detection or Detect or Detect* or Assessm* or Vivo or Vitro or Study or Studies))