Objectives: To investigate and quantify forces generated by three-dimensional-printed aligners made of shape memory polymers (four-dimensional [4D] aligner). Methods: Clear X v1.1 material was used in this study. On a custom-made typodont model, correction maxillary central incisor (tooth 21) malposition 4D with thicknesses 0.8 1.0 mm measured superimposition subsequent scans. Maximum deflection foil sheet specimens were at different temperatures three-point bending (3-PB) tests. In...

As an innovative approach to overcome the rate-limiting staging of conventional aligners, using shape memory polymers (SMPs) as aligners’ materials was investigated in this vitro study. The ability SMPs recover and consequently move tooth, upon appropriate stimuli, evaluated on a typodont model before clinical application. study design achieve 1.9 mm correction movement upper central incisor by one aligner after multiple steps/activation. A custom-made aligned with movable scanned. Using...

To evaluate the validity and reliability of three-dimensional (3D) landmark-based palatal superimposition digital dental models using Ortho Mechanics Sequential Analyzer (OMSA). The sample consisted pre- post-treatment maxillary 20 orthodontic cases. For each case, were superimposed surface-based methods utilizing 3dMD Vultus Invivo 5 software as well a method OMSA. same set parameters measured on 3D data by three softwares for comparison. Agreement in outcomes among was evaluated with...

Abstract Background Thermography is a contemporary imaging modality based on acquiring and analyzing thermal data using non-contact devices. The aim of the present study was to assess validity thermography, compared with that reference-standard, for diagnosis periapical inflammatory lesions evaluate temperature ranges acute pulpitis apical periodontitis (AAP), abscess (AA) chronic (CA). Methods AAP, AA CA were diagnosed clinical radiographic criteria. Thermographic acquired FLIR E-5 Infrared...

The interpretation of the signs Temporomandibular joint (TMJ) osteoarthritis on cone-beam computed tomography (CBCT) is highly subjective that hinders diagnostic process. objectives this study were to develop and test performance an artificial intelligence (AI) model for diagnosis TMJ from CBCT. A total 2737 CBCT images 943 patients used training validation AI model. was based a single convolutional network while object detection achieved using regression Two experienced evaluators performed...

Structured Abstract Objective To assess validity and reliability of palatal superimposition holograms 3D digital dental models using a customized software, (Ortho Mechanics Sequential Analyzer OMSA ), installed on Microsoft HoloLens device as compared to the application running regular computer screen. Methods The sample consisted pre‐ post‐treatment maxillary 20 orthodontic cases (12.3 ± 1.9 years) treated by rapid expansion (two turns per day). For each case, were superimposed hand...

Objective: To evaluate the effect of different surface treatment methods on shear bond strength (SBS) metal brackets bonded to two types CAD/CAM composite restorations: milled and 3D-printed. Materials Methods: A total 160 flat-shaped specimens (10×10×2 mm³) were prepared from four CAD-CAM composites; (Lava Ultimate™ [LU], Grandio™ [GR]) 3D-printed (Crowntec™ [CT] C&B Permanent™ [CB]). These underwent thermocycling (5000 cycles at 5-55 °C), then categorized based into groups (n=10):...

Abstract Purpose The aim was to investigate the effect of aging by thermocycling and mechanical loading on forces moments generated orthodontic clear aligners made from different thermoplastic materials. Methods A total 25 thermoformed 5 materials, i.e., Essix ACE® Essix® PLUS™ (Dentsply Sirona, Bensheim, Germany), Invisalign® (Align Technology, San Jose, CA, USA), Duran®+ (Iserlohn, Zendura™ (Fremont, underwent a 14-day protocol involving (a 0.2 mm vestibular malalignment upper left second...

Treatment duration is one of the most important factors that patients consider when deciding whether to undergo orthodontic treatment or not. This study aimed build and compare machine learning (ML) models for prediction length identify affecting using ML approach. Records 518 who had successfully finished were used in this study. Seventy percent patient data training models, thirty testing these models. We applied compared nine machine-learning algorithms: simple linear regression, modified...

Objective: The objective of this study was to evaluate the effect different surface treatment methods on shear bond strength (SBS) metal brackets bonded two types CAD/CAM composite restorations: milled and 3D-printed. Materials Methods: A total 160 flat-shaped specimens (10 × 10 2 mm3) were prepared from four composites; (Lava Ultimate™ [LU] Grandio™ [GR]) 3D-printed (Crowntec™ [CT] C&B Permanent™ [CB]). These underwent thermocycling (5000 cycles at 5–55 °C), then categorized based into...

Sameh Talaatab, Ahmed Kaboudanc, Omar Abdelbaryd, Katherine Kulae, Ghoneimaefg, Reinhard Kleinh & Christoph Bourauelb*a Department of Orthodontics, College Dentistry, Future University, Cairo, Egyptb Oral Technology, School University Bonn, Germanyc Computer Science, ElShorouk Academy, New Egyptd Fixed Prosthodontics, Egypte Orthodontics and Facial Genetics, Indiana Indianapolis, IN, USAf Faculty Dental Medicine, Al-Azhar Egyptg Hamdan Bin Mohammed Medicine,Mohammed Rashid Medicine Health...

Abstract Background: Thermography is a contemporary imaging modality based on acquiring and analyzing thermal data using non-contact devices. The aim of the present study was to assess validity thermography, compared with that gold standard, for diagnosis endo-perio lesions evaluate temperature ranges acute pulpitis apical periodontitis (AAP), periapical abscess (AA) chronic (CA). Methods: AAP, AA CA were diagnosed clinical radiographic criteria. Thermographic acquired FLIR E-5 Infrared...