Influence of the surface humidity, implant angulation, and interimplant distance on the accuracy and scanning time of complete-arch implant scans

Objectives To assess the influence of implant angulation, humidity, and interimplant distance on the accuracy and scanning time of complete-arch implant scans. Methods A definitive cast with 4 parallel implant abutment analogs (P group), and another cast with 4 angulated (up to 30 degrees) implant a...

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Bibliographic Details
Authors: Gómez Polo, Miguel Ángel, Ortega, Rocío, Sallorenzo, Alessandro, Agustín-Panadero, Rubén, Barmak, Abdul B, Kois, John C, Revilla-León, Marta
Format: article
Publication Date:2022
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/115167
Online Access:https://hdl.handle.net/20.500.14352/115167
Access Level:Open access
Keyword:616.314-089.843
616-073.75
Accuracy
Digital impression
Implant dentistry
Intraoral scanner
Prosthodontics
Odontología (Odontología)
Implantes dentales
Diagnóstico por imagen y medicina nuclear
3213.13 Ortodoncia-Estomatología
3213 Cirugía
2209.90 Tratamiento Digital. Imágenes
Description
Summary:Objectives To assess the influence of implant angulation, humidity, and interimplant distance on the accuracy and scanning time of complete-arch implant scans. Methods A definitive cast with 4 parallel implant abutment analogs (P group), and another cast with 4 angulated (up to 30 degrees) implant abutment analogs (NP group) were digitized by using a scanner (7Series) (reference scans). Two subgroups were created: dry (D subgroup) and wet (W subgroup). For the D subgroup, the casts were digitized without altering the surface humidity by using an intraoral scanner (IOS) (TRIOS 3). For the W subgroup, the cast surface was humidified with artificial saliva and digitized by using the same IOS. The interimplant distance discrepancies were assessed by computing linear and angular measurements. Trueness data was analyzed using 3-way ANOVA followed by the pairwise comparison Tukey tests. The Bartlett test, followed by the pairwise comparison tests, was used to assess the precision (α=.05). Results Regarding the trueness, implant angulation (P<.001) and inter-implant distance measurement (P<.001) influenced the linear discrepancies. Implant angulation (P=.002), humidity conditions (P<.001), and inter-implant distance (P=.001) influenced the angular discrepancies. Regarding the precision, significant differences in the variance of linear and angular measurements and inter-implant distances were found. Humidity conditions (P<.001) influenced the scanning time. Conclusions Implant angulation, humidity, and interimplant distance influenced the accuracy and scanning time of complete-arch implant scans. Parallel implants resulted in higher trueness and precision values. Dry conditions resulted in slightly higher scanning trueness and precision and shorter scanning time. Clinical significance Drying the surface being scanned increases intraoral scanning accuracy and decreases intraoral scanning time.

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