Alteração no volume do fluido gengival durante a retração de caninos superiores

Capelli, Jonas; Fidel, Rivail Antônio Sérgio; Figueredo, Carlos Marcelo; Teles, Ricardo

doi:10.1590/s2176-94512010000200008

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Since inflammatory process occurs during tooth movement, several mediators such as chemokines, cytokines and growth factors can be detected in GCF . During orthodontic tooth movement, an increase in expression of inflammatory mediators (cytokines) , such as interleukins (ILs) is expected. These cytokines are released during orthodontic tooth movement from various cell types, such as periodontal ligament fibroblasts and osteoclasts modulating the inflammatory response, and bone remodeling, especially IL‐1β, IL‐6 and IL‐8 .…”

Section: Introductionmentioning

confidence: 99%

Photobiomodulation increases intrusion tooth movement and modulates IL‐6, IL‐8 and IL‐1β expression during orthodontically bone remodeling

Fernandes

Suzuki

et al. 2019

Journal of Biophotonics

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This study investigated the effects of photobiomodulation (PBM) on upper molar intrusion movement, regarding acceleration of orthodontic movement and its molecular effects. The sample consisted of 30 patients with indication of tooth intrusion for oral rehabilitation. Teeth were divided into three different groups: G1 (n = 10) pre‐molars without force or laser application (control); G2 (n = 10) upper molar intrusion; and G3 (n = 10) upper molar intrusion and PBM. On PBM treated molars, the teeth were irradiated with a low‐power diode laser (808 nm, 100 mW), receiving 1 J per point, density of 25 J/cm2, with application of 10 s per point, 10 points (5 per vestibular and 5 per palatal region). Orthodontic force of intrusion applied every 30 days and PBM was performed immediately, 3 and 7 days after force application for 3 months. Gingival crevicular fluid was collected at the same time periods as the laser applications and interleukins (IL) 1‐β, ‐6 and ‐8 were evaluated by enzyme‐linked immunosorbent assay. Clinical measures were performed monthly to verify the amount of intrusion. The levels of IL‐6, IL‐8 and IL‐1β increased under orthodontic force (G2 and G3) when compared to control group (G1), however, the cytokines levels were significantly higher after PBM (G3). The mean intrusion velocity was 0.26 mm/month in the irradiated group (G3), average duration of 8 months vs 0.17 mm/month for the non‐irradiated group (G2), average duration of 12 months. This study suggests that PBM accelerates tooth movement during molar intrusion, due to modulation of IL‐6, IL‐8 and IL‐1β during bone remodeling.

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Section: Introductionmentioning

confidence: 99%

Photobiomodulation increases intrusion tooth movement and modulates IL‐6, IL‐8 and IL‐1β expression during orthodontically bone remodeling

Fernandes

Suzuki

et al. 2019

Journal of Biophotonics

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Evaluation of the effects of photobiomodulation on orthodontic movement of molar verticalization with mini-implant

Murakami-Malaquias-Silva

Rosa

Almeida

et al. 2020

Medicine

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Introduction: Loss of a dental element can generate several repercussions in the stomatognathic system. According to the latest survey by the Ministry of Health, in 2010, Brazilian adults had, on average, 7 missing teeth. This loss may lead to movement of the adjacent teeth and the antagonist, which would make prosthetic rehabilitation harder to do. Anchoring systems, such as mini-implants, have been increasingly used as a treatment option because they act with heavy but controlled forces and without side effects. Recent studies have shown that photobiomodulation (PBM) can accelerate orthodontic movement in molar intrusion. The objective of this study will be to evaluate the effect of PBM on the acceleration of the orthodontic movement of molar verticalization and its effect on pain and inflammation of the periodontal tissues. Patient concerns: the concerns assessments will be done over the study using anamnesis interviews and specific questionnaire. Diagnosis: verticalization will be evaluated by clinical and radiographic analysis. Interventions: Thirty four healthy patients aged 30 to 60 years, who need to recover the prosthetic space for oral rehabilitation after loss of the posterior inferior dental elements and inclination of the adjacent element, will be randomly divided into 2 groups: G1 (control group) - verticalization by mini-implant + PBM simulation (placebo); G2 (experimental group) - verticalization by mini-implant + PBM. The movements will occur with the aid of mini-implants and elastomeric chains ligatures. The PBM will occur with diode laser application, 808 nm, 100 mW, receiving 1J per point, 10 seconds, 10 points (5 per buccal and 5 per lingual) and radiant exposure of 25 J/cm2. The orthodontic forces of verticalization (corresponding to any exchange of elastomeric ligation) will be applied every 30 days and the PBM will be applied immediately, 3 and 7 days of each month, for a period of 3 months. The crevicular gingival fluid (CGF) will be collected on the 1st, 3rd, and 7th days after the first activation, and then on the 3rd day of the following 2 months. Outcomes: Interleukins IL1β, IL-6, IL-8, IL-10, and TNF-α will be analyzed by ELISA. Panoramic radiography will be performed at baseline and 90 afterwards to ascertain the amount (in degrees) of verticalization. To evaluate the pain, the Visual Analog Scale (VAS) will be used in all the consultations, and to evaluate the quality of life, the Oral Health Impact Profile (OHIP-14) questionnaire will be applied. Analgesics will be given and the quantity of drugs will be counted. If the data are normal, they will be submitted to Student t test. The data will be presented as means ± SD and the value of p will be defined as <0.05.Discussion: This protocol will determine the effectiveness of photobiomoduation regarding the orthodontic movement of molar verticalization. Ethics and dissemination: This protocol received approval from the Human Research Ethics Committee of Universidade Nove de Julho (certificate number: 3 533 219). The data will be published in a peer-reviewed periodical.

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Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar Corticotomy Techniques: A Three-dimensional Finite Element Analysis

Lima

et al. 2016

The Journal of Contemporary Dental Practice

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Aim: By using the finite element method (FEM), this study aimed to evaluate the effect of different corticotomy formats on the distribution and magnitude of stress on the periodontal ligament (PDL) during retraction of the maxillary canine. Materials and methods:A geometric model of the left hemi-jaw was created from computed tomography scan images of a dry human skull and loads were administered during distalization movement of the canine. Three trials were performed: (1) without corticotomy, (2) box-shaped corticotomy and perforations in the cortical bone of the canine (CVC) and (3) CVC and circularshaped corticotomy in the cortical bone of the edentulous space of the first premolar.Results: There was no difference in stress distribution among the different corticotomy formats. Conclusion:Different corticotomy formats used to accelerate orthodontic tooth movement did not affect stress distribution in the PDL during canine retraction. Clinical significance. From a mechanical perspective, the present study showed that the stress distribution on the PDL during canine retraction was similar in all the corticotomy formats. When using the Andrews T2 bracket, the PDL presented the highest levels of stress in the middle third of the PDL, suggesting that the force was near the center of resistance. Also, as bone weakening by corticotomies did not influence stress distribution, the surgical procedure could be simplified to a less aggressive one, focusing more on inflammatory cellular stimulation than on bone resistance. A simpler surgical act could also be performed by most orthodontists in their practices, enhancing postoperative response and reducing patient costs. Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar

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Alteração no volume do fluido gengival durante a retração de caninos superiores

Cited by 3 publications

References 11 publications

Photobiomodulation increases intrusion tooth movement and modulates IL‐6, IL‐8 and IL‐1β expression during orthodontically bone remodeling

Photobiomodulation increases intrusion tooth movement and modulates IL‐6, IL‐8 and IL‐1β expression during orthodontically bone remodeling

Evaluation of the effects of photobiomodulation on orthodontic movement of molar verticalization with mini-implant

Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar Corticotomy Techniques: A Three-dimensional Finite Element Analysis

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