CLINICAL FEATURES AND EVALUATION THE EFFECT LASER DIODE ON TOOTH MOVEMENT IN ORTHODONTIC TREATMENTS AT CAN THO UNIVERSITY OF MEDICINE AND PHARMACY HOSPITAL
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Abstract
Background: Orthodontics is a specialty of dentistry concerned with restoration patients’ aesthetics and functional bite. However, the main concern of orthodontic patients is not only straight teeth but also time of treatment. Low-level Laser Therapy (LLLT) is a promising method of accelerating tooth movement due to the fact that it is noninvasive, inexpensive and easy to use. Objectives: Evaluate the effect of LLLT on teeth movement in orthodontic treatment via comparing the distance and time of canine retraction in 2 groups at T1 (4 weeks), T2 (8 weeks), T3 (12 weeks) and 3 periods of time: T1-T0, T2-T1, T3-T2. Material and methods: This randomized double-blind splint-mouth controlled clinical study includes 16 orthodontic patients requiring extraction 2 maxillary first bicuspids and retraction of canines. Time taken for canine retraction with LLLT (Group 1) over control quadrant of the same patient (Group 2) was accessed along with the distance of canine movement (on models) at 3 moments: 4 weeks, 8 weeks and 12 weeks after activating retraction of canines. Results: The total distance of canine movement in Group 1 (after 4 weeks: 0.84 ± 0.08 mm, after 8 weeks: 1.71 ± 0.12 mm and after 12 weeks: 2.56 ± 0.11 mm) was bigger than that in Group 2 (after 4 weeks: 0.80 ± 0.07mm, after 8 weeks: 1.66 ± 0.11 mm, after 12 weeks: 2.38 ± 0.12 mm). The difference was significant after 12 weeks (p < 0.05). The distance of canine movement for every 4 weeks in Group 1 (4 first weeks: 0.84 ± 0.08 mm, 4 middle weeks: 0.87 ± 0.86 mm, 4 last weeks: 0.85 ± 0.72 mm) was higher than such figures in Group 2 (4 first weeks: 0.80 ± 0.07mm, 4 middle weeks: 0.86 ± 0.10 mm, 4 last weeks: 0.72 ± 0.08 mm). The unequal data was noticeable during 2 last periods of time (p < 0.001). The movement speed in Group 1 (0.853 mm/mouth) was remarkably faster than the velocity in Group 2 (0.795 mm/tháng) (p < 0.001). Conclusion: Low-level Laser Therapy (LLLT) is a useful method which can accelerate tooth movement speed in orthodontic treatments.
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Keywords
Laser therapy, orthodontic, tooth movement
References
2. Fujita S, Yamaguchi M. (2008), “Low-level laser stimulates tooth movement velocity via expression of RANK and RANKL. Orthod Craniofac Res”, 11, pp.143-155.
3. Garg N.J., Singh G., Kannan S. (2014), "Effect of 810 nm diode laser therapy on the rate of extraction space closure", The Journal of Indian Orthodontic Society, 48(3), pp.143-148.
4. Gene G., Kocadereli I.,Tasar F. (2012), “Effect of low-level laser therapy (LLLT) on orthodontic tooth movement”, Lasers Med Sci, pp.1-7.
5. Goulart C.S., Nouer P.R., Mouramartins L., Garbin I.U., de Fatima Zanirato Lizarelli R,K. (2006), "Photoradiation and orthodontic movement: experimental study with canines", Photomed Laser Surg, 24(2), pp.192-196.
6. Hasler R., Schmid G., Ingervall B. (1997), “A clinical comparison of the rate of maxillary canine retraction into healed and recent extraction sites-a pilot study”, European Journal of Orthodontics 19 , pp. 711- 719.
7. Kansal A., Kittur N., Dahiya P (2014), "Effects of low-intensity laser therapy on the rate of orthodontic tooth movement: A clinical trial", Dent Res J, 11 (4), pp.481-488.
8. Kawasaki K., Shimizu N. (2000), "Effects of Low-Energy Laser Irradiation on Bone Remodeling During Experimental Tooth Movement in Rats", Lasers in Surgery and Medicine, 26, pp.282-291.
9. Mester E., Mester A.F., Mester A. (1985), "The biomedical effects of laser application", Lasers Surg Med, 5, pp.31-39.
10. Seifi M, Shafeei HA, Daneshdoost S, Mir M (2007), "Effects of two types of low-level laser wave lengths (850 and 630 nm) on the orthodontic tooth movements in rabbits", Lasers Med Sci, 22(4), pp.261-64.
11. Sousa M., Scanavini M., Sannomiya E., Velasco L., Angelieri F (2011), "Influence of LowLevel Laser on the Speed of Orthodontic Movement", Photomedicine and Laser Surgery, 29 (3), pp. 191-196.
12. Yoshida T, Yamaguchi M, Utsunomiya T (2009), "Low-energy laser irradiation accelerates the velocity of tooth movement via stimulation of the alveolar bone remodeling", Orthodontics & Craniofacial Research, 12 (4), pp. 289-298.
13. Youssef M., Ashkar S., Hamade E (2008), "The effect of low-level laser therapy during orthodontic movement: a preliminary study", Lasers Med Sci, 23, pp.27-33.