World Journal of Orthodontics

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

In the past 10 years, self-ligating brackets have captured the interest of many clinicians and enjoyed increasing popularity. These brackets have been developed to overcome the disadvantages of stainless steel or elastomeric ligatures in terms of ergonomics, efficiency, deformation, discoloration, plaque accumulation, and friction. A self-ligating bracket does not require any type of ligature because it is has a mechanical device that opens and closes the edgewise slot. Secure archwire engagement may be accomplished by a built-in clip...

AIM: To investigate the surface morphology, structure, molecular and elemental composition, and hardness of plastic brackets exposed to fluoride solutions. METHODS: Two types of plastic brackets (Silkon Plus and SpiritMB) were exposed to three fluoride solutions 10 times for 1 minute each and then subjected to attenuated total relectance-Fournier transform infrared (ATR-FTIR) spectroscopy, scanning electron microscopy (SEM), x-ray energy dispersive microanalysis (EDS), and Vickers hardness (HV) testing...

AIM: To study in vitro the bond strength of three adhesive systems on lingual brackets. METHODS: Forty-five extracted human mandibular premolars were randomly divided into three groups of 15 specimens each. All brackets (Stealth lingual brackets) were bonded with Transbond XT Light Cure Adhesive. In group 1, the conventional primer was used; in group 2, Transbond Moisture Insensitive Primer was employed; and in group 3, an antimicrobial self-etching primer (Clearfil Protect Bond) was used...

This is the report of a patient with an anterior four-unit fixed partial denture in whom a screw was used to extrude a too-short abutment tooth. Due to the mini-implant, fewer teeth needed to be bonded, thereby keeping more teeth out of harm's way.

Caring for patients with bilateral cleft lips and palates requires an interdisciplinary approach. The treatment of such a patient is described. Therapy comprised maxillary expansion, mini-implant insertion, premaxillary osteotomy, and vomeroplasty, which led to a drastic improvement of the occlusion and facial appearance.

This report describes the treatment of a patient with a severe skeletal Angle Class II occlusion with a 14-mm overjet, crowding, and protrusion of the mandibular anterior teeth. The Class II relationship was caused mainly by a short corpus of the mandible. A fixed functional appliance was directly anchored on mini-implants, which were inserted in the mandible. A significant amount of mandibular advancement was achieved, with no protrusion of the mandibular anterior teeth. Facial esthetics improved considerably...

AIM: To determine the tangential tensile force loading behavior of mini-implants relative to cortical bone thickness in the porcine mandible. METHODS: Eighteen mini-implants were placed both anteriorly and posteriorly perpendicular to the bone surface in porcine mandibles and subjected to shear tests using a Universal Testing Machine (Instron). Further, cone beam CT was used to measure cortical bone thickness at each mini-implant site. RESULTS: The shear strength differed significantly between the anterior (mean 89...

AIM: To investigate the incidence of bacteremia in the bloodstream immediately after orthodontic mini-implant insertion, which can be an invasive procedure. METHODS: Blood samples (10 mL) were taken before and after mini-implant insertion from 40 patients (18 males, 22 females; mean age 21.3 ± 7.7 years). These samples were inoculated into BacT/Alert aerobic and anaerobic blood culture bottles and processed in a BacT/Alert 9240 Blood Culture System. The findings were analyzed with the McNemar test...

AIM: To evaluate the stability of self-drilling mini-implants used for immediate en masse retraction of all anterior teeth. METHODS: Six patients with 12 self-drilling mini-implants (diameter 1.6 mm, length 6.0 mm), which were placed on each side between the maxillary first molar and second premolar, were evaluated. The mini-implants were loaded immediately after placement with a force of 200 cN. Lateral cephalograms were taken upon loading (T1) and after 6 months of retraction (T2)...

AIM: To determine the efficacy of mini-implants as intraoral anchorage during en masse intrusion of the six maxillary anterior teeth. METHODS: Ten patients from the Department of Orthodontics, KLE University, Belgaum, India, who required intrusion of their anterior teeth were selected for this study. After initial alignment and leveling, the maxillary arch was divided into one anterior segment and two posterior segments. A 0.021 3 0.025-inch stainless steel wire was placed in all three segments...

AIM: Conventionally, noncompliance distal movement of molars relies exclusively on intraoral anchorage. The distal screw, a distal jet appliance supplemented by two paramedian mini-implants, is an innovative alternative. The aim of this study was to evaluate the suitability of this device to move molars bodily and distally. METHODS: The effects of the distal screw were evaluated in a sample of 18 consecutively treated preadolescent and adolescent individuals (nine females and nine males; mean age at the start of treatment, 11...

AIM: Distal movement of maxillary molars is a reasonable but often challenging treatment alternative for patients with a dental Class II occlusion and an increased overjet or anterior crowding. One problem is that most of the conventional noncompliance devices that distally move maxillary molars lead to some anchorage loss. As such, a new appliance was designed that is connected to two coupled mini-implants with exchangeable abutments. The aim of this study was to evaluate the effectiveness of this system for distal movement and the extent of its adverse effects...