The use of metal-free thermoplastic materials plays a key role in the orthodontic digital workflow due to increasing demand for clear aligner treatments. Three polymers commonly used fabricate aligners, namely Duran®, Biolon® and Zendura®, were investigated evaluate effect thermoforming (T.), storage artificial saliva (S.A.S.) their combination on mechanical properties. Elastic modulus yield stress specimens characterized. Each material was characterized each condition through tensile tests...

Abstract Background Clear aligners (CA) are among the most chosen orthodontic therapies for patients who require an invisible treatment. Previous studies showed that thermoforming process and complexity of intraoral environment might alter properties these devices. The aim current prospective clinical study was to assess thickness changes CA after 10 days use. secondary reproducibility process, in terms aligner thickness. Materials methods from 18 consecutive (13 women, 5 men, mean age 28.8...

Clear aligners are employed daily for the treatment of Class II malocclusions, when a valid option involves distalization and derotation upper first second molars. Evidence regarding predictability these movements is slight, outcome that clinicians plan may not be achieved. Therefore, purpose this study to assess accuracy with clear aligners. Geomagic Control X, 3D quality control software, was used superimpose digital models pre-treatment, post-treatment, virtual (ideal post-treatment)...

Abstract Background This study aimed to assess the accuracy of digital workflow for guided insertion miniscrews in anterior palate using restorative implant dentistry software and licensed orthodontic applications. Methods Twenty subjects (8 males, 12 females, mean age = 16.7 ± 2.1 years) were prospectively selected receive bicortical palatal miniscrews. Virtual planning was performed (Blue Sky Plan*, version 4.7) (group 1 10 subjects) (Dolphin Imaging Software, 11.0) 2 subjects). A specific...

ABSTRACT Objective This retrospective study aims to assess the predictability of Overbite (OVB) reduction and Curve Spee (COS) levelling in patients with deep bite malocclusion treated Clear Aligner Therapy (CAT). The research evaluates accuracy prescribed movements growing non‐growing patients. Materials Methods Thirty‐six Invisalign from January 2018 using SmartTrack were included. Digital models at pre‐treatment, virtual plan post‐treatment phases collected analysed Geomagic Control X....

To compare the surface roughness of different orthodontic archwires.Four nickel-titanium wires (Sentalloy(®), Sentalloy(®) High Aesthetic, Titanium Memory ThermaTi Lite(®), and Esthetic(®)), three β-titanium (TMA(®), Colored TMA(®), Beta Titanium(®)), one stainless-steel wire (Stainless Steel(®)) were considered for this study. Three samples each analyzed by atomic force microscopy (AFM). Three-dimensional images processed using Gwiddion software, average (Ra), root mean square (Rms),...

Over the past few years, influence of static or dynamic magnetic fields on biological systems has become a topic considerable interest. Magnetism recently been implicated to play significant roles in regulation cell responses and, for this reason, it is revolutionizing many aspects healthcare, also suggesting new opportunities tissue engineering. The aim present study was analyze effect application mode time-dependent field behavior human mesenchymal stem cells (hMSCs) seeded 3D...

ABSTRACT Objectives: To investigate the in vitro cytotoxicity of different thermoplastic materials for clear aligners on human primary gingival fibroblasts (HGFs). Materials and Methods: Four were considered this study: Duran (Scheu-Dental GmbH, Iserlohn, Germany), Biolon (Dreve Dentamid Unna, Zendura (Bay LLC, Fremont, CA, USA), SmartTrack (Align Technology, San Jose, USA). Three out four (Duran, Biolon, Zendura) assessed as thermoformed nonthermoformed, whereas was only thermoformed. The...

Aim . To evaluate the effectiveness and tolerability of nitrous oxide sedation for dental treatment on a large pediatric sample constituting precooperative, fearful, disabled patients. Methods 472 noncooperating patients (aged 4 to 17) were treated under conscious sedation. The following data calculated: average age; gender distribution; success/failure; adverse effects; number treatments; kind procedure undertaken; procedures each working session; sessions patient; differences between males...

Aim. To evaluate the pain experience and behavior during dental injection, using Wand computerized delivery system versus conventional local anesthesia in children adolescents. Methods. An observational crossover split mouth study was performed on 67 patients (aged 7 to 15 years), requiring for treatments both sides of arch. Patients received types injections two separate appointments, one with use a Computer Delivery System (the STA system) traditional syringe. The following data were...

Aim . To evaluate the biomechanical effects of four different auxiliary-aligner combinations for extrusion a maxillary central incisor and to define most effective design through finite element analysis (FEA). Materials Methods A full arch (14 teeth) was modelled by combining two imaging techniques: cone beam computed tomography surface-structured light scan. The appliance auxiliary geometries were created exploiting computer-aided (CAD) procedures. reconstructed digital models imported...

This study aimed to evaluate the periodontal health of orthodontic patients with supportive therapy in a 3 month follow-up. The sample comprised 20 (mean age 20.6 ± 8.1 years) treatment multibracket fixed appliances (fixed group-FG) and 34.7 12.5 clear aligners (clear group-CAG). At baseline (T0) after months (T1), probing depth (PD), plaque index (PI), bleeding on (BOP), gingival recession (REC) were measured. Patients trained perform an individualized tooth brushing technique, every 2...

The concept of magnetic guidance is still challenging and has opened a wide range perspectives in the field tissue engineering. In this context, nanocomposites consisting poly(ε-caprolactone) (PCL) matrix iron oxide (Fe3O4) nanoparticles were designed manufactured for bone mechanical properties PCL/Fe3O4 (80/20 w/w) first assessed through small punch tests. inclusion Fe3O4 improved punching as values peak load higher than those obtained neat PCL without significantly affecting work to...

Background. Clear aligners treatment (CAT) is a common solution in orthodontics to treat both simple and complex malocclusions. This study aimed evaluate the predictability of CAT, comparing virtually planned achieved tooth movement at end stage 15, which often time first refinement. Methods. Seventeen patients (mean age: 28.3 years) were enrolled study. Torque, tip rotation analyzed 238 maxillary teeth on digital models Pre-treatment (T0), 15 (T15) (T15i). Prescription, Achieved performance...

To evaluate the effects of intraoral aging on surface properties esthetic and conventional nickel-titanium (NiTi) archwires.Five NiTi wires were considered for this study (Sentalloy, Sentalloy High Aesthetic, Superelastic Titanium Memory Wire, Esthetic EverWhite). For each type wire, four samples analyzed as received after 1 month clinical use by an atomic force microscope (AFM) a scanning electronic (SEM). sliding resistance, two stainless steel plates with three metallic or monocrystalline...