Acceleration Of Orthodontic Movement Research Articles

Effectiveness of photobiomodulation with low-level lasers on the acceleration of orthodontic tooth movement: a systematic review and meta-analysis of split-mouth randomised clinical trials.

Although several studies have evaluated the effect of low-level laser therapy (LLLT) on orthodontic movement acceleration, results are still inconsistent. Such inconsistencies may be attributed to the differences in the LLLT application protocols, especially in terms of wavelength ranges. Objective: (i) to assess the clinical effects of LLLT on the acceleration of orthodontic movement and (ii) to establish the most effective LLLT wavelength to accelerate tooth movement during orthodontic treatments. MEDLINE (PubMed), Scopus, ScienceDirect, and LILACS were searched from inception to October 2022. Inclusion criteria: Split-mouth randomised clinical trials (RCTs) on systemically healthy patients reporting the effect of LLLT in accelerating orthodontic movements, specifically retraction of canines. The risk of bias was assessed using RoB-2. A random effect model was applied. Nineteen RCTs met the inclusion criteria for qualitative synthesis, and eighteen RCTs were included in the quantitative synthesis. Seventeen studies were rated as at some concerns of bias and two studies were classified as having a low risk of bias. In general terms, this systematic review and meta-analysis presents a moderate risk of bias. Findings of this systematic review and meta-analysis point to a tendency for faster orthodontic dental movement in the groups receiving LLLT treatment during the first (OR of 0.28 95% CI (0.07 to 0.48)), second (OR of 0.52 95% CI (0.31 to 0.73)), and third (OR of 0.41 95% CI (0.03 to 0.79)) month follow-up. Wavelengths ≤ 810nm and energy density values ≤ 5.3J/cm2 were associated with faster orthodontic tooth movement.

Periodontally accelerated osteogenic orthodontics: A narrative review

The orthodontic patient has evolved in recent years, leaving an important place for adult patients. These patients most often require special management, they are demanding aesthetic orthodontic treatments, but also shorter. The acceleration of orthodontic movement has long been sought for its multiple potential contributions, including the reduction of treatment time, a reduction of side effects linked to the maintenance of orthodontic equipment in the oral cavity (such as bacterial plaque retention, root resorption, and the open spaces of the gingival embrasure), an improved tooth movement envelope, differential tooth movement, and improved stability after treatment. Numerous surgical techniques have been developed to speed up orthodontic movements. The aim of this study was to review the current literature regarding the periodontally accelerated osteogenic orthodontics technique.

An overview of nanotechnological advances in orthodontics

Nanotechnology is the field of science dealing with the manipulation of the matter at the nanoscale level. The science of nanotechnology has emerged as a promising concept in all fields of medicine including dentistry and its scope is increasing everyday. It has also gained relevance in the field of orthodontics owing to its wide range of applications ranging from nanocoatings in archwires and brackets, orthodontic bonding, antimicrobial properties, atomic force microscopy to some future applications such as shape memory polymers, mandibular growth stimulation with gene therapy, acceleration of orthodontic movement, and use as biomechanical sensors. The enormous range of application of nanotechnology in orthodontics demands an intensive research into its current and future usages. This article aims to review and discuss the various applications and its potential usage in orthodontics.

Photobiomodulation increases intrusion tooth movement and modulates IL-6, IL-8 and IL-1β expression during orthodontically bone remodeling.

This study investigated the effects of photobiomodulation (PBM) on upper molar intrusion movement, regarding acceleration of orthodontic movement and its molecular effects. The sample consisted of 30 patients with indication of tooth intrusion for oral rehabilitation. Teeth were divided into three different groups: G1 (n = 10) pre-molars without force or laser application (control); G2 (n = 10) upper molar intrusion; and G3 (n = 10) upper molar intrusion and PBM. On PBM treated molars, the teeth were irradiated with a low-power diode laser (808 nm, 100 mW), receiving 1 J per point, density of 25 J/cm2 , with application of 10 s per point, 10 points (5 per vestibular and 5 per palatal region). Orthodontic force of intrusion applied every 30 days and PBM was performed immediately, 3 and 7 days after force application for 3 months. Gingival crevicular fluid was collected at the same time periods as the laser applications and interleukins (IL) 1-β, -6 and -8 were evaluated by enzyme-linked immunosorbent assay. Clinical measures were performed monthly to verify the amount of intrusion. The levels of IL-6, IL-8 and IL-1β increased under orthodontic force (G2 and G3) when compared to control group (G1), however, the cytokines levels were significantly higher after PBM (G3). The mean intrusion velocity was 0.26 mm/month in the irradiated group (G3), average duration of 8 months vs 0.17 mm/month for the non-irradiated group (G2), average duration of 12 months. This study suggests that PBM accelerates tooth movement during molar intrusion, due to modulation of IL-6, IL-8 and IL-1β during bone remodeling.

The use of four different lasers in a “surgery first” case, for orthodontic movement acceleration, paresthesia, aphthous ulcer, edema, and pain control

Photobiomodulation is an important resource during an orthodontic treatment. It is useful to control post archwire activation pain, reduce orthodontic treatment time, and achieve faster-wound healing. The aim of this report is to present an ortho-surgical case treated with four different laser wavelengths applied during all stages of the treatment to achieve different results in the benefit of the patient. A severe class II 52-year-old female patient with muscular pain and temporomandibular disorders. The patient was treated with a surgery-first protocol and passive self-ligating brackets to achieve dental movement acceleration and pain control; the patient was irradiated using 808 nm wavelength, 100 mW, ED 80 J/cm2, E 2.2 J, 22 s along the vestibular and palatal surface performing a scanning movement. After surgery, the patient has irradiated 6 sessions for edema and inflammation control, with a 940 nm, in continuous mode, 2.5 W, 120 s, 85.71 J/cm2, over the right and left side. After 2 weeks, the patient reports paresthesia in her left lower lip. A paresthesia protocol was started with a 650 nm wavelength laser, using the following parameters: 100 mW, PD 0.2 W/cm2, E 6 J, 60 s, one session every 2 days for 3 weeks. When the patient reported one aphthous ulcer in her left lower lip, the affected surface was irradiated with a wavelength of the 660 nm laser, 25 J/cm2, 100 mW, for 14 s, applying laser by scanning the lesion 1 mm away. Only one laser application per aphthous lesion was made. The patient finished all the ortho-surgical treatment in 4 and a half months. Four successful wavelengths, but also two laser protocols were applied during the treatment, not only to accelerate orthodontic movement but also to reduce edema after orthognathic surgery, paresthesia, and aphthous ulcer as well.