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Modifiable Clinical Dental Impression Methods to Obtain Whole-Mouth and Detailed Dental Traits From Vertebrates.
J Morphol
January 2025
Macroevolution Unit, Okinawa Institute of Science of Technology, Onna-son, Okinawa, Japan.
Dental impressions, developed for accurate capture of oral characteristics in human clinical settings, are seldom used in research on nonlivestock, nonprimate, and especially nonmammalian vertebrates due to a lack of appropriate tools. Studies of dentitions in most vertebrate species usually require euthanasia and specimen dissection, microCT and other scans with size and resolution tradeoffs, and/or ad-hoc individual impressions or removal of single teeth. These approaches prevent in-vivo studies that factor in growth and other chronological changes and separate teeth from the context of the whole mouth.
View Article and Find Full Text PDFDoes the use of a 3-mm extended tray during an at-home bleaching treatment increase gingival irritation? A randomized clinical trial.
J Prosthet Dent
November 2024
Professor, Department of Endodontics and Restorative Dentistry, School of Medicine and Dentistry, University of Santiago de Compostela (USC), Santiago de Compostela, A Coruña, Spain.
Statement Of Problem: Gingival irritation is a common side effect of at-home bleaching, but how the design of the bleaching tray affects its occurrence is unclear.
Purpose: The purpose of this randomized clinical trial was to determine whether a direct relationship is present between the design of bleaching trays and the risk of gingival irritation during at-home bleaching treatments.
Material And Methods: This clinical trial was registered at ClinicalTrials.
Accuracy of implant abutment level digital impressions using stereophotogrammetry in edentulous jaws: an in vitro pilot study.
BMC Oral Health
October 2024
Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of Implantology, Stomatological Hospital, Dental School, Tongji University, Shanghai, China.
Background: In edentulous jaws, factors such as the number of implants, cross-arch distribution, and the angle among implants may affect the accuracy of the implant impression. This study explored factors influencing the accuracy of implant abutment-level digital impressions using stereophotogrammetry in edentulous jaws.
Methods: Two standard all-on-4 and all-on-6 models of edentulous jaws were constructed in vitro.
Accuracy of polyether and vinylpolysiloxane impressions when using different types of 3D-printed impression trays - an in vitro study.
Clin Oral Investig
September 2024
Department of Prosthodontics, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
Objectives: To investigate dimensional accuracy of polyether (PE) and vinylpolysiloxane (VPS) impressions taken with manually fabricated and 3D-printed trays.
Materials And Methods: To evaluate impression accuracy, highly precise digital data of a metallic lower jaw model with prepared teeth (regions 34 and 36), an implant (region 47) and three precision balls placed occlusally along the dental arch served as reference. PE (Impregum, 3M Oral Care) and VPS (Aquasil, Dentsply Sirona) impressions (n = 10/group) were taken with trays fabricated using different materials and manufacturing techniques (FDM: filament deposition modeling, material: Arfona Tray, Arfona; printer: Pro2, Raise3D; DLP: digital light processing, material: V-Print Tray, VOCO, printer: Max, Asiga; MPR: manual processing with light-curing plates, material: LC Tray, Müller-Omicron) including an open implant impression.
A digital approach to creating a positioning tray for a multiple implant impression and its clinical application: A dental technique.
J Prosthet Dent
September 2024
Associated Professor, Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of Prosthodontics, Stomatological Hospital and Dental School, Tongji University, Shanghai, PR China. Electronic address:
A workflow is described for fabricating a custom complete arch implant positioning tray for the impression of multiple implants. In this technique, a complete arch virtual cast with abutments is obtained by intraoral scanning. Details for the tray including extension range, thickness, and impression post perforation sites can be designed from this cast.
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