scholarly journals The past and present research at the University of Sydney’s Discipline of Orthodontics

2021 ◽  
Vol 11 ◽  
pp. 90-99
Author(s):  
Narayan H. Gandedkar ◽  
Oyku Dalci ◽  
M. Ali Darendeliler
Keyword(s):  
Tooth Movement ◽  
Root Resorption ◽  
Light Emitting Diode ◽  
Orthodontic Tooth Movement ◽  
Stimulated Emission ◽  
Low Level Laser Therapy ◽  
Light Emitting ◽  
Level Laser ◽  
Light Amplification ◽  
The University

The University of Sydney’s Discipline of Orthodontics has been actively pursuing research in the areas of root resorption, sleep apnea, magnets in orthodontics, implants, acceleration of orthodontic tooth movement (OTM), and remote monitoring (RM). Our research has shed light on many specific factors that influence orthodontically induced inflammatory root resorption (OIIRR). We also explored the effects of some of the most discussed acceleration interventions on OTM and OIIRR, such as vibration, micro-osteoperforations, piezocision, low-level laser therapy, light emitting diode, light amplification by stimulated emission of radiation, and pharmacological substances. Further, we have researched into maximizing orthopedic treatment outcomes of maxillary deficient children with use of intraoral force application with utilization of miniscrew-assisted rapid palatal expander. We are currently trialing use of RM to facilitate orthodontic services in the public dental clinics.

scholarly journals Phototherapy is unable to exert beneficial effects on orthodontic tooth movement in rat molars

2019 ◽  
Vol 89 (6) ◽  
pp. 936-941 ◽  
Author(s):  
Simone P. Friedrichsdorf ◽  
Emily Zaniboni ◽  
Alyne Simões ◽  
Victor E. Arana-Chavez ◽  
Gladys C. Dominguez
Keyword(s):  
Laser Irradiation ◽  
Tooth Movement ◽  
Root Resorption ◽  
Light Emitting Diode ◽  
Orthodontic Tooth Movement ◽  
Male Rats ◽  
Light Emitting ◽  
Beneficial Effects ◽  
Infrared Laser Irradiation ◽  
Rat Molars

ABSTRACT Objectives: To investigate the effects of irradiation lasers and light-emitting diode (LED) light on root resorption in rat molars during orthodontic tooth movement (OTM). Materials and Methods: Twenty-one 12-week-old Wistar male rats were divided into three groups: OTM only (control [CG]), OTM and LED irradiation (DG), and OTM and low laser irradiation therapy (LG). The distance between the first and second molars was used to evaluate the amount of tooth movement. The mesial surfaces of the distopalatal roots were analyzed by scanning electron microscopy, and the area of the resorption was calculated. Results: Statistical analysis showed a decreased amount of tooth movement in the exposed DG or LG compared with CG, which was statistically significant (P = .031 and P = .004, respectively). However, when the DG and LG groups were compared, no statistically significant differences were found (P = .504). The root resorption areas were similar between CG and DG. However, statistically significant differences were found between LG and CG (P = .014) and LG and DG (P = .038). Conclusions: Phototherapy did not enhance tooth movement, while infrared laser irradiation did increase root resorption.

scholarly journals Laser-Assisted Orthodontic Tooth Movement in Saudi Population: A Prospective Clinical Intervention of Low-Level Laser Therapy in the 1st Week of Pain Perception in Four Treatment Modalities

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Mohammad Khursheed Alam
Keyword(s):  
Pain Perception ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Clinical Intervention ◽  
Low Level Laser Therapy ◽  
Treatment Modalities ◽  
Single Application ◽  
Orthodontic Bracket ◽  
Level Laser ◽  
Orthodontic Patients

Background. This first-in-human study in Saudi orthodontic patients has evaluated the role of low-level laser therapy (LLLT) in pain perception (PP). The outcome of single application of LLLT with 4 different treatment modalities (TM) on PP are evaluated following orthodontic bracket bonding on maxilla. Materials and Methods. A prospective clinical intervention with implementation of parallel technique in each group, 32 orthodontic patients with ectopic canine requiring fixed orthodontic appliance were enrolled and randomly allocated to the 4 groups: LLLT + self-ligating (SL) bracket, LLLT + conventional (Conv.) bracket, non-LLLT + SL bracket, and non-LLLT + Conv. bracket. Orthodontic bracket bonding from 1st molar to 1st molar and superelastic 0.012 inch NiTi were applied for the maxilla. For each patient, maxillary 1st molar to molar received a single application of LLLT using a 940 nm Ga-Al-As laser device on 5 different points labially/buccally and palatally. Main outcome measure was the degree of PP score during the 1st week of orthodontic tooth movement (OTM) after 4 hours, 24 hours, 3 days, and 7 days of both LLLT and non-LLLT treatment applications. A questionnaire with an 11-point numeric rating scale (NRS) was used for PP. Results. Mean ± SD of PP in the LLLT + SL group was 3.33 ± 1.4, 3.58 ± 1.06, 2.31 ± 0.67, and 1.89 ± 0.54 in 4 hours, 24 hours, 3 days, and 7 days, respectively. Compared to all 4 TM groups, LLLT groups showed better PP. More statistically significant differences were found in LLLT groups. No harms were encountered. Limitations. The intervention provider and the patient were not blinded to the intervention. Conclusion. The LLLT + SL group revealed significantly promising benefits on PP during OTM.

Effect of Low-level Laser Therapy on Orthodontic Tooth Movement

2017 ◽  
Vol 51 (2) ◽  
pp. 81-86
Author(s):  
Gagan Deep Kochar ◽  
Sanjay M Londhe ◽  
Bensy Varghese ◽  
Balakrishna Jayan ◽  
Sarvaraj Kohli ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser
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