Silicone Additive Manufactured Indices Performed from a Virtual Diagnostic Waxing for Direct Composite Diastema Closure Combined with Resin Infiltration Technique on White Spot Lesions: A Case Report

Abstract

The present article describes the resin infiltration technique to address white spots lesions presented on anterior and premolar teeth of a young patient after orthodontic treatment and the digital workflow for planning a diastema closure on the maxillary anterior teeth using facial photographs, an intraoral scanner, a facially driven diagnostic waxing using a dental computer‐aided design (CAD) software, and 3‐piece additive manufactured (AM) clear silicone indices. The virtual design of the silicone indices was completed using an open‐source CAD software and included a flexible clear buccal piece, flexible clear lingual piece, and rigid clear custom tray. The unique 3‐piece index design allows a horizontal path of insertion, controlled uniform thickness of the indices, flexible and rigid material properties combination, accurate translation of the diagnostic waxing into the patient´s mouth, and digital storage of the designs.

Accuracy of Reduction Depths of Tooth Preparation for Porcelain Laminate Veneers Assisted by Different Tooth Preparation Guides: An In Vitro Study

“…Recently, studies have proposed the use of 3D printed "silicone indices" and have shown that the digital design and the resin material provide higher control of index thickness and border of the index. 22,23 Similarly, the results of this study also showed that the thermoplastic guide improved the accuracy of veneer preparation by 0.11−0.09 mm and provided more consistent preparation than the silicone guides. The mechanical properties of the resin material are advantageous; 5 thus, stronger guides can be much thinner to manage the preparation depth in a more controlled and precise manner.…”

Diagnostic Applications of Intraoral Scanners: A Systematic Review

“…In this field, scanners with integrated caries detection systems based on noninvasive optical systems, described in Section 3.5, are already under development and are spreading on the market. The first scanner with integrated caries detection technology was TRIOS 4, which integrates fluorescence technology, whose diagnostic reliability was investigated in many of the articles analyzed [48][49][50]. Even near-infrared lights have the ability to locate carious lesions, and this technology has been implemented in iTero Element 5D.…”

“…Davidovich et al [47,48] presented an innovative therapeutic approach for endodontically treated teeth and treatment for the hypomineralization of molar incisors (MIH) in children using a digital workflow with an IOS and CAD/CAM for restoration, addressing the uncooperative behavior of children and enabling the preservation of the tooth structure and long-lasting restoration. Revilla-Leon et al [49,50] and Park et al [51] instead presented a digital workflow for esthetic rehabilitation (e.g., in case of diastema) using a combination of facial and intraoral scanners and additive manufactured (AM) clear silicone indices. DuVall [52] used an intraoral scanner and milling unit to fabricate a CAD/CAM radiographic and surgical guide for use with a Cone Beam Computed Tomography system.…”

Accuracy of the preparation depth in mixed targeted restorative space type veneers assisted by different guides: An <i>in vitro</i> study

“…A deviation of 0.140 mm was consistently detected in the thickness of the trial restoration, and the deformation of the silicone matrix caused a deviation in the trial restoration [29], further affecting the accuracy of the measurement points [30]. Some studies have also reported the deviation of trial restorations made from a silicone matrix and proposed a 3D-printed index to improve accuracy [31][32][33].…”