TY - JOUR
AU - Thor, Andreas
AB - Background: Several studies have evaluated accuracy of intraoral scanners (IOS), but data is lacking regarding variations between IOS systems in the depiction of the critical finish line and the finish line accuracy. The aim of this study was to analyze the level of finish line distinctness (FLD), and finish line accuracy (FLA), in 7 intraoral scanners (IOS) and one conventional impression (IMPR). Furthermore, to assess parameters of resolution, tessellation, topography, and color. Methods: A dental model with a crown preparation including supra and subgingival finish line was reference-scanned with an industrial scanner (ATOS), and scanned with seven IOS: 3M, CS3500 and CS3600, DWIO, Omnicam, Planscan and Trios. An IMPR was taken and poured, and the model was scanned with a laboratory scanner. The ATOS scan was cropped at finish line and best-fit aligned for 3D Compare Analysis (Geomagic). Accuracy was visualized, and descriptive analysis was performed. Results: All IOS, except Planscan, had comparable overall accuracy, however, FLD and FLA varied substantially. Trios presented the highest FLD, and with CS3600, the highest FLA. 3M, and DWIO had low overall FLD and low FLA in subgingival areas, whilst Planscan had overall low FLD and FLA, as well as lower general accuracy. 
TI - Finish line distinctness and accuracy in 7 intraoral scanners versus conventional impression: an in vitro descriptive comparison
JF - BMC Oral Health
DO - 10.1186/s12903-018-0489-3
DA - 2018-02-23
UR - https://www.deepdyve.com/lp/springer-journals/finish-line-distinctness-and-accuracy-in-7-intraoral-scanners-versus-0O1aGSIp0f
SP - 1
EP - 11
VL - 18
IS - 1
DP - DeepDyve
ER -