Purpose
To characterize radiographically the periodontal ligament thickness (PLT) and pain perception (PP) at the beginning of orthodontic treatment by activating and applying infrared laser of 810 nm each month for three months.
Methodology
It was a quasi-experimental, descriptive and longitudinal study with a non-probabilistic sample consisting of 10 patients from the clinic of Orthodontics and Orthopedics at the Autonomous University of Sinaloa. 200 measurements were performed in teeth #11 and 12 (laser-treated); and 21 and 22 (non-treated control). To measure the PLT periapical radiographs were analyzed with Motic software 3V Advance. For PP determination, visual analog scale (VAS) was used. Descriptive statistical analysis was performed with SPSS v-19 (confidence interval of 95%).
Results
In laser-treated teeth, PLT increased significantly 0.719 μm from the first to the second measurement and decreased 0.648 μm in the third measurement. In non-treated control teeth, PLT increased averaging 1.011 μm without significant change in the third measurement. PP in control teeth averaged 3.7 ± 3.2 on the VAS scale in the first measurement and 2.3 ± 2.3 in the second; while in the irradiated zone they averaged 2.9 ± 2.8 in the first month and 1.4 ± 1.2 in the second.
Conclusion
With laser treatment, PLT is significantly reduced in comparison to the group that did not receive the treatment. At one and two months of treatment, average of PP decreased both in teeth where the laser is applied as in those without.
Propósito
Caracterizar radiográficamente el grosor del ligamento periodontal (gLPD) y la percepción dolorosa (PD) al inicio de tratamiento ortodóntico activando y aplicando láser infrarrojo de 810 nm cada mes durante tres meses.
Metodología
Estudio cuasiexperimental, descriptivo, longitudinal, muestra no probabilística de 10 pacientes de la Clínica de Ortodoncia y Ortopedia de la Universidad Autónoma de Sinaloa. Se realizaron 200 mediciones en las piezas 11 y 12 (con tratamiento láser); y 21 y 22 (sin tratamiento). Para medir el gLPD se analizaron radiografías periapicales con el software Motic Advance 3V. Para la PD se usó la escala visual analógica (EVA). El análisis estadístico descriptivo se realizó con SPSS v-19 (intervalo de confianza de 95%).
Resultados
En las piezas tratadas con láser, el gLPD aumentó significativamente 0.719 μm de la primera a la segunda medición, y disminuyó 0.648 μm en la tercera medición. En las piezas control, el gLPD aumentó promediando 1.011 μm sin cambio significativo en la tercera medición. La PD en las piezas control en la escala EVA promediaron 3.7 ± 3.2 en la primera medición, y 2.3 ± 2.3 en la segunda; mientras que en la zona irradiada promediaron 2.9 ± 2.8 en el primer mes y 1.4 ± 1.2 en el segundo.
Conclusión
El gLPD di