* Effect of LED-mediated-photobiomodulation therapy on orthodontic tooth movement and root resorption in rats.
- The aim of this experimental study was to evaluate the effects of light-emitting diode-mediated-photobiomodulation therapy (LPT), on the rate of orthodontic tooth movement (TM) and orthodontically induced root resorption, in rats. Twenty male 12-week-old Wistar rats were separated into two groups (control and LPT) and 50 cN of force was applied between maxillary left molar and incisor with a coil spring. In the treatment group, LPT was applied with an energy density of 20 mW/cm(2) over a period of 10 consecutive days directly over the movement of the first molar teeth area. The distance between the teeth was measured with a digital caliper on days 0 (T0), 10 (T1), and 21 (T2) on dental cast models. The surface area of root resorption lacunae was measured histomorphometrically using digital photomicrographs. Mann-Whitney U and Wilcoxon tests were used for statistical evaluation at p < 0.05 level. TM during two different time intervals (T1-T0 and T2-T1) were compared for both groups and a statistically significant difference was found in the LPT group (p = 0.016). The TM amount at the first time period (1.31 ± 0.36 mm) was significantly higher than the second time period (0.24 ± 0.23 mm) in the LPT group. Statistical analysis showed significant differences between two groups after treatment/observation period (p = 0.017). The magnitude of movement in the treatment group was higher (1.55 ± 0.33 mm) compared to the control group (1.06 ± 0.35 mm). Histomorphometric analysis of root resorption, expressed as a percentage, showed that the average relative root resorption affecting the maxillary molars on the TM side was 0.098 ± 0.066 in the LPT group and 0.494 ± 0.224 in the control group. Statistically significant inhibition of root resorption with LPT was determined (p < 0.001) on the TM side. The LPT method has the potential of accelerating orthodontic tooth movement and inhibitory effects on orthodontically induced resorptive activity.
=>1.取り扱い, 扱い, 治療, 待遇, 処理, 処置, 2.台本, シナリオ
Overview of noun treatment
The noun treatment has 4 senses (first 4 from tagged texts)
1. (28) treatment, intervention -- (care provided to improve a situation (especially medical
procedures or applications that are intended to relieve illness or injury))
2. (25) treatment, handling -- (the management of someone or something; "the handling of prisoners";
"the treatment of water sewage"; "the right to equal treatment in the criminal justice system")
3. (4) treatment -- (a manner of dealing with something artistically; "his treatment of space
borrows from Italian architecture")
4. (2) discussion, treatment, discourse -- (an extended communication (often interactive) dealing
with some particular topic; "the book contains an excellent discussion of modal logic"; "his
treatment of the race question is badly biased")
--- WordNet end ---
PubMed database: last updated on 2023-05-29 (c)sirasawa 2019