Efficacy of clear aligners vs rapid palatal expanders on palatal volume and surface area in mixed dentition patients: A randomized controlled trial.

Introduction: This study aimed to evaluate the efficacy of Invisalign First Phase I treatment compared with tooth-borne rapid maxillary expansion (RME) in mixed dentition patients by examining changes in palatal volume, palatal surface area, and maxillary interdental transverse measurements.

Methods: In this open-label, 2-arm, parallel, randomized controlled trial, patients with a posterior transverse discrepancy ≤6 mm were allocated into the clear aligner therapy (CAT) group (Invisalign First Phase I treatment) and RME group (tooth-borne RME) according to a computer-generated randomization list immediately before the start of treatment. Digital models were obtained before the beginning of the treatment (T0) and at the end of the retention period/treatment (T1) using an intraoral scanner.

Predictability of orthodontic tooth movement with aligners: effect of treatment design.

Backgrounds: The present study was designed to define: (1) which are the less predictable OTM with Invisalign aligners when the treatment plan is designed by expert operators, (2) if the presence and shape of attachments influence the predictability of OTM and (3) if patients' demographics influence OTM predictability. The sample comprises 79 prospectively recruited patients (mean age 30.8 years; SD 12.

Scanning electron microscopy analysis of aligner fitting on anchorage attachments.

Purpose: The aims of the study were (1) to evaluate the fitting of three different aligners (Invisalign [Align Technology, Santa Clara, CA, USA], CA Clear Aligner [Scheu-Dental, Iserlohn, Germany] and F22 [Sweden&Martina, Due Carrare, Italy]) on anchorage attachments using scanning electron microscopy (SEM), and (2) to analyze the influence of 2 different types of resin used to build attachments on aligner fitting.

Methods: Using STL files of a patient, six resin casts were obtained and rectangular attachments were bonded on them. Conventional bulk-fill resin was used to build upper attachments while a flowable resin was used to build the lower ones.

Buccolingual Inclination Control of Upper Central Incisors of Aligners: A Comparison with Conventional and Self-Ligating Brackets.

Objective: The upper incisors torque expression is essential for the orthodontic treatment accuracy. Various orthodontic devices are claimed to have different inclination control capacity. The purpose of this retrospective study was to compare the radiographic buccolingual inclination of upper incisors in patients treated with three different orthodontic techniques.

Scanning electron microscopy evaluation of aligner fit on teeth.

Objectives: The fitting of aligners on anchorage teeth is a crucial factor in clear aligner orthodontics. The purpose of this experimental study was to evaluate the fitting of two aligner systems, Invisalign and CA-Clear Aligner, using scanning electron microscopy (SEM).

Materials And Methods: Passive aligners (Invisalign and CA-Clear Aligner) were adapted on resin casts obtained by stereolithography (STL) files of a patient, and then sectioned buccolingually.

Root resorption during orthodontic treatment with Invisalign®: a radiometric study.

Background: Root resorption (RR) is described as a permanent loss of tooth structure from the root apex. Many reports in the literature indicate that orthodontically treated patients are more likely to have severe apical root shortening, interesting mostly maxillary, followed by mandibular incisors. The aim of the study was to investigate the incidence and severity of RR in adult patients treated with aligners.

Use of clear aligners in open bite cases: an unexpected treatment option.

In open bite case treatments, a proper diagnostic differentiation is essential in determining the appropriate corrective procedures. Dental open bites are generally more responsive to treatment with orthodontics alone, whereas skeletal open bites often require a combination of orthodontics and orthognathic surgery. Patient selection and treatment principles for non-surgical open bite treatment routinely include fixed appliances both labial or lingual.

Maxillary molar distalization with aligners in adult patients: a multicenter retrospective study.

Background: The aim of the present study was to test the hypothesis that bodily maxillary molar distalization was not achievable in aligner orthodontics.

Methods: Forty lateral cephalograms obtained from 20 non-growing subjects (9 male, 11 female; average age 29.73 years) (group S), who underwent bilateral distalization of their maxillary dentition with Invisalign aligners (Align Technology, Inc.

Lower incisor extraction treatment with the Invisalign® technique: three case reports.

The extraction of a lower incisor can lead to satisfactory orthodontic results for patients with moderate to severe lower incisor crowding. Invisalign(®) is a treatment modality for such treatments, moving teeth with precision and reducing inconvenience for the patient. Three case reports are presented in this article supporting the above statements.

Orthodontics in the Mediterranean Area.

The article describes on the results of the first Workshop that SIDO organized in December 2005 in Cairo getting together twenty Countries who discussed Orthodontics in the Mediterranean Area. The aim was to take a picture, for the first time, of the state of Orthodontics in the different Mediterranean Countries using it as basis for a further co-operation. Progress in Orthodontics (published in English, indexed in Medline, free of charge website and downloading) was offered by SIDO as the means for a scientific and organizational sharing, and to spread a Mediterranean Orthodontic culture all over the world.

Computer-aided interactive indirect bonding.

Introduction: The introduction of the virtual occlusal set-up, limited to the permanent dentition with dento-dental and dento-alveolar discrepancies, based on the straight wire technique with final arches .020" x .025" ss in straight wire brackets .

Effect of different light sources and guides on shear bond strength of brackets bonded with 2 adhesive systems.

Introduction: This study assessed the effect of different light sources and light guides on the shear bond strength and failure site of orthodontic brackets bonded with 2 adhesive systems (Quick Cure [Reliance Orthodontic Products, Itasca, Ill] and Transbond XT [3M/Unitek, Monrovia, Calif]).

Methods: Ninety bovine permanent mandibular incisors were randomly divided into 6 groups according to the adhesive system and light-curing procedure used. Each group consisted of 15 specimens; 90 stainless steel brackets were bonded to the teeth.

Distalization of maxillary molars using the speed system: a clinical and radiological evaluation.

Aim: To show how a self-ligating system can provide bodily movement of maxillary molars without extraoral devices or lingual appliances, reducing the need for patient compliance. The control of these tooth movements has been clinically and radiologically substantiated.

Methods: The biomechanical principles, patient selection, and steps of the treatment are described.

Digital treatment objectives: procedure and clinical application.

Objectives: the introduction of digital study models in the orthodontic practice changed the traditional stone gipsotec to a virtual gipsotec and the orthodontist has the possibility to see, immediately on the computer, this basic analysis with a great reduction of space and time. The aim of this study is to extend the use of digital models to the occlusal virtual set-up in 3D and have the orthodontist simulate and visualize the resulting occlusion from a suggested treatment plan for the malocclusion.

Methods And Materials: a case is presented where the treatment plan involvers extractions.

Control of tooth movements with the Speed system.

Steps taken to evolve the straight-wire system eventually led to the development of self-ligating brackets. The Speed system, comprehensive of bracket, wires, force, and anchorage management, is a significant evolutionary development. The design property of the fourth wall in the Speed bracket allows the Ni-Ti wire to be placed in the slot fully.