Fig. 4: This image series illustrates the sequence and analysis of caries preparation and composite restoration procedures.
From: Effect of microgravity on the feasibility and accuracy of dental procedures

a Coloured teeth for the preparation procedure with simulated caries lesion (indicated by a black delineation) and intact enamel (marked by orange colouring). b A visual representation of a molar (tooth 36) before and c after preparation procedure. A dashed square indicates the area featured in images (d) and (e). d A visual representation of a computer-aided evaluation of under-preparation (indicated by green) and e over-preparation (indicated by white). f Plastic mandibular teeth for the restoration procedure with standardised cavities. g A visual representation of a premolar (tooth 35) with a standardised cavity before and h after restoration procedure. A dashed circle indicates the area shown in image (i). i Additionally, a visual representation of an under-fill (indicated by light green) and over-fill (indicated by red) composite placement relative to the baseline morphology of the tooth. (Photo: SpaceDent).