Photoradiation and Orthodontic Movement: Experimental Study with Canines

Goulart, Carlos Sechi; Nouer, Paulo Roberto Aranha; Mouramartins, Laura; Garbin, Ivana Uglik; Lizarelli, Rosane de Fátima Zanirato

doi:10.1089/pho.2006.24.192

Cited by 84 publications

(60 citation statements)

References 17 publications

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“…Some studies reporting differences have been carried out over a period of months rather than weeks. 2,6,33 Nevertheless, there have been studies conducted over shorter time periods that have shown differences in tooth movement associated with LLLT. 1,5,28 Interestingly, Kim et al also did not show a statistically signi ficant difference in the rate of tooth movement between the LLLT group and control until the fifth week of their 8 weeks study.…”

Section: Jiosmentioning

confidence: 99%

Effect of 810 nm Diode Laser Therapy on the Rate of Extraction Space Closure

Garg¹,

Singh²,

Kannan³

et al. 2014

JIOS

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Purpose: To determine if biostimulation using a 810 nm diode laser was capable of affecting the rate of extraction space closure during orthodontic treatment. Materials and methods:Forty dental arches of patients above 17 years of age requiring bilateral first premolar extractions were exposed to a 810 nm diode laser with a power density of 3.97 W/cm 2 at 3 weeks intervals for total duration of 12 weeks during the space closure phase under direct anchorage using miniscrews. Space closure measurements were taken using digital calipers and the unpaired t-test was used to compare the differences between the experimental and control sides. Results:The rate of orthodontic tooth movement was greater on the experimental side and the difference between the two sides was statistically significant (p < 0.001). Conclusion:Biostimulation carried out using a 810 nm diode laser is capable of increasing the rate of extraction space closure in humans. Hence, it can be concluded that it is capable of increasing the rate of orthodontic tooth movement.

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Section: Jiosmentioning

confidence: 99%

Effect of 810 nm Diode Laser Therapy on the Rate of Extraction Space Closure

Garg¹,

Singh²,

Kannan³

et al. 2014

JIOS

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“…A variety of factors including the type of laser, the output, the area of irradiation and the animal species used could be determinant in the response of certain energy setting. Goulart et al 20 reported that a dosage of 5.25 J/cm 2 accelerated orthodontic movement but 35 J/cm 2 retarded the orthodontic movement in dog. Limpanichkul et al 21 suggested that 25 J/cm 2 was too low to express any effect on orthodontic tooth movement.…”

Section: Discussionmentioning

confidence: 99%

Effects of Neodymium-Doped Yttrium Aluminium Garnet (Nd:YAG) Laser Irradiation on Bone Metabolism During Tooth Movement

et al. 2016

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IntroductionOrthodontic treatment involves moving tooth by force application and it requires a period of time. Prolonged orthodontic treatment can be a threat to oral hygiene and a source of trauma to oral tissue. Shortening the treatment time becomes one of the challenges for orthodontists. Several approaches have been described in the literature. Köle et al 1 reported that corticotomy accelerated experimental tooth movement in rats. Also Tuncay et al 2 and Young et al 3 reported that fiberotomy could achieve similar results in rats. Kanzaki et al 4 reported that local gene transfer of receptor activator of nuclear factor kappa-B ligand (RANKL) may activate osteoclast genesis and accelerate the tooth movement in periodontal tissue of rats. Also, it has been suggested that many substances such as platelet-poor plasma (PPP), platelet rich plasma (PRP), nitric oxide (NO) and prostaglandin E 2 (PGE 2 ) can accelerate experimental tooth movement. However, the side effect remains a major problem, making clinical application difficult. Chen et al 5 reported that electromagnetic wave treatment accelerated tooth movement in guinea pigs without adverse effects. Furthermore, it is shown by Nishimura et al 6 that by applying vibration, accelerated tooth movement can be achieved in beagle dogs without harm. Despite the fact that various methods have been shown to accelerate teeth movement, corticotomy is the only one applied in present. Nevertheless, the surgery represents a great burden for patients and there is also risk of tissue necrosis or infection. Therefore, a safer method is desired for orthodontic treatment. The effect of laser irradiation on orthodontic tooth movement has been attracting much attention over the past few years. Although it is indicated by numerous reports that tooth movement can be accelerated by diode laser irradiation, 7-9 there are only a few studies focused on other lasers. Ninomiya et al 10 revealed that neodymium-doped yttrium aluminium garnet (Nd:YAG) laser irradiation increased bone formation in femur metaphysis. Their results have shown the possibility of altering bone metabolism by laser irradiation. Therefore, in this experiment, The aim of this study is to evaluate the effects of low-level neodymium-doped yttrium aluminium garnet (Nd:YAG) laser irradiation on orthodontic tooth movement and histological examination. Methods: Eleven male Wistar rats (aged 10 weeks) were included. To produce experimental tooth movement in rats, 10 g force was applied to maxillary first molars with nickel titanium closed coil springs. Right molars were irradiated with Nd:YAG laser on days 0, 1, 2, 3, 7, 10, 14, 17, 21 and 24, while un-irradiated left molars were used as control. Distance between mesial side of second molar and distal side of first molar was measured on μCT image during tooth movement and the rats were sacrificed 4 weeks after the initiation of tooth movement. Results: The amount of tooth movement was significantly greater in the irradiation group (0.20 ± 0.06) than in the control group (0....

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“…1,3,4,5,[7][8][9][10][11][12][14][15][16][17][18]20,[23][24][25][26] We describe four fundamental points for experimental models to ensure that the evaluation of the effects of medication and phototherapy on induced tooth movement and associated root resorption is free of external influence.…”

Section: Palavras-chavementioning

confidence: 99%

Effects of medications and laser on induced tooth movement and associated root resorption: four key points

Consolaro

2013

Dental Press J. Orthod.

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The following four fundamental points on the use of experimental models will be described to ensure an accurate evaluation of the effects of medication and laser therapy on induced tooth movement and associated root resorption: (1) If the objective is to check the effect on root resorption, the forces experimentally applied must produce a lesion on the cementoblast layer in all specimens; (2) If the objective is to optimize induced tooth movement and reduce treatment time without side effects, the forces experimentally applied should not produce a lesion in the cementoblast layer in any specimen; (3) The laser therapy operator, the person administering medication and the person that places appliances should not know which animals will effectively receive the test treatment, and the control groups should receive placebo treatments; (4) CT and microscopic analysis of the specimens should be random, and the group to which the specimen belongs should not be identified to ensure that the person reading images and the pathologists are not influenced in their evaluation of phenomena. These measures will ensure that results are more reliable and easier to extrapolate to orthodontic clinical practice.

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Photoradiation and Orthodontic Movement: Experimental Study with Canines

Abstract: The results suggets that photoradiation may accelerate orthodontic movement at a dosage of 5.25 J/cm(2), whereas a higher dosage, 35.0 J/cm(2), may retard it.

Cited by 84 publications

References 17 publications

Effect of 810 nm Diode Laser Therapy on the Rate of Extraction Space Closure

Effect of 810 nm Diode Laser Therapy on the Rate of Extraction Space Closure

Effects of Neodymium-Doped Yttrium Aluminium Garnet (Nd:YAG) Laser Irradiation on Bone Metabolism During Tooth Movement

Effects of medications and laser on induced tooth movement and associated root resorption: four key points

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