Physical properties of root cementum: Part 27. Effect of low-level laser therapy on the repair of orthodontically induced inflammatory root resorption: A double-blind, split-mouth, randomized controlled clinical trial
Ang Khaw CM, Dalci O, Foley M, Petocz P, Darendeliler MA, Papadopoulou AK
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics · 25 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Organización sin fines de lucro
- Australian Society of Orthodontists Foundation for Research and Education
Según 1 financiador declarado.
Publicación
- Publicado
- 2018-08-30 · Am J Orthod Dentofacial Orthop · vol. 154 · número 3 · págs. 326–336
- Editorial
- Elsevier BV
- Citado
- 55 citas · más que el 90% de estudios similares · 2.5× el promedio de su campo
- Referencias
- 55 trabajos
- Acceso
- De pago
- Áreas de investigación
- Laser Applications in Dentistry and Medicine · Orthodontics and Dentofacial Orthopedics · Endodontics and Root Canal Treatments
- Palabras clave
- low-level laser therapy, orthodontically induced inflammatory root resorption, maxillary first premolar, 660 nm red laser, fixed orthodontic appliances, root cementum, micro-computed tomography, sham-controlled treatment
- MeSH
- dental cementum, bicuspid, tooth root, humans, root resorption, treatment outcome, tooth extraction, double-blind method, orthodontic appliance design, orthodontic brackets, orthodontic wires, stress, mechanical, adolescent, female, male, x-ray microtomography, low-level light therapy, tooth movement techniques
6 autores
- Chun M. Ang Khaw🇦🇺The University of Sydney; Sydney Dental Hospital; Sydney Local Health District
- Oyku Dalci🇦🇺The University of Sydney; Sydney Dental Hospital; Sydney Local Health District
- Matthew Foley🇦🇺The University of Sydney
- Peter Petocz🇦🇺Macquarie University
- M. Ali Darendeliler🇦🇺The University of Sydney; Sydney Dental Hospital; Sydney Local Health District
- Alexandra K. Papadopoulou🇦🇺 · autor de correspondenciaThe University of Sydney; Sydney Dental Hospital; Sydney Local Health District
Resumen
El texto original del estudio, en el idioma en que se publicó.
Introduction
The purpose of this 2-arm-parallel split-mouth trial was to investigate the effect of low-level laser therapy (LLLT) on the repair of orthodontically induced inflammatory root resorption (OIIRR).
Methods
Twenty patients were included in this study, with 1 side randomly assigned to receive LLLT, and the other side served as a sham. Eligibility criteria included need for bilateral maxillary first premolar extractions as part of fixed appliance treatment. OIIRR was generated by applying 150 g of buccal tipping force on the maxillary first premolars for 4 weeks. After the active force was removed, the teeth were retained for 6 weeks. LLLT commenced with weekly laser applications using a continuous beam 660-nm, 75-mW aluminum-gallium-indium-phosphorus laser with 1/e2 spot size of 0.260 cm2, power density of 0.245 W/cm2, and fluence of 3.6 J/cm2. Contact application was used at 8 points buccally and palatally above the mucosa over each tooth root for 15 seconds with a total treatment time of 2 minutes. After 6 weeks, the maxillary first premolars were extracted and scanned with microcomputed tomography for primary outcome OIIRR calculations. Subgroup analysis included assessment per root surface, per vertical third, and sites of heaviest compressive forces (buccal-cervical and palato-apical). Randomization was generated using www.randomization.com, and allocation was concealed in sequentially numbered, opaque, sealed envelopes. Blinding was used for treatment and outcome assessments. Two-tailed paired t tests were used to determine whether there were any statistically significant differences in total crater volumes of the laser vs the sham treated teeth.
Results
Total crater volumes were 0.746 mm3 for the laser treated teeth and 0.779 mm3 for the sham. There was a mean difference of 0.033 ± 0.39 mm3 (95% CI, -0.21 to 0.148 mm3) greater resorption crater volume in the sham group compared with the laser group; this was not statistically significant (P = 0.705). No harm was observed.
Conclusions
No significant difference was found between LLLT and sham control groups in OIIRR repair.
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