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Revisión sistemática

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Effect of botulinum toxin type A on muscular temporomandibular disorder: A systematic review and meta-analysis of randomized controlled trials.

Autores Li K , Tan K , Yacovelli A , Bi WG
Revista Journal of oral rehabilitation
Año 2023
Enlaces Pubmed DOI

Este artículo incluye 19 Estudios primarios 15 Estudios primarios (19 referencias)

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BACKGROUND: Botulinum toxin type A (BTX-A) is increasingly used to manage painful temporomandibular disorders (TMD). However, the effect of BTX-A on muscular TMD remains unclear. OBJECTIVE: To assess the efficacy, safety and optimal dose of BTX-A for treating TMD. METHODS: We conducted systematic literature searches in MEDLINE, Embase, Web of Science, ClinicalTrials.gov and Cochrane Library until March 2023. We extracted data from randomized controlled trials (RCTs) that evaluated the efficacy and safety of BTX-A in treating muscular TMD. We performed a meta-analysis using a random-effects model. RESULTS: Fifteen RCTs involving 504 participants met the inclusion criteria. BTX-A was significantly more effective than placebo in reducing pain intensity, as measured on a 0-10 scale, at 1 month (MD [95% CI] = -1.92 [-2.87, -0.98], p < .0001) and 6 months (MD [95% CI] -2.08, [-3.19 to -0.98]; p = .0002). A higher dosage of BTX-A (60-100 U bilaterally) was associated with a greater reduction in pain at 6 months (MD [95% CI] = -2.98 [-3.52, -2.44]; p < .001). BTX-A also resulted in decreased masseter muscle intensity (μV) (MD [95% CI] = -44.43 [-71.33, -17.53]; p = .001) at 1 month and occlusal force (kg) at 3 months (MD [95% CI] = -30.29 [-48.22 to -12.37]; p = .0009). There was no significant difference in adverse events between BTX-A and placebo. CONCLUSIONS: BTX-A is a safe and effective treatment for reducing pain and improving temporomandibular muscle and joint function in muscular TMD patients. A bilateral dose of 60-100 U might be an optimal choice for treating muscular TMD pain.

Revisión sistemática

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Botulinum Toxin for Treating Temporomandibular Disorders: What is the Evidence?

Revista Journal of oral & facial pain and headache
Año 2022
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Este artículo incluye 24 Estudios primarios 24 Estudios primarios (24 referencias)

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AIMS: To systematically review the scientific literature for evidence concerning the clinical use of botulinum toxin (BTX) for the management of various temporomandibular disorders (TMDs). METHODS: A comprehensive literature search was conducted in the Medline, Web of Science, and Cochrane Library databases to find randomized clinical trials (RCT) published between 2000 and the end of April 2021 investigating the use of BTX to treat TMDs. The selected articles were reviewed and tabulated according to the PICO (patients/problem/population, intervention, comparison, outcome) format. RESULTS: A total of 24 RCTs were selected. Nine articles used BTX injections to treat myofascial pain, 4 to treat temporomandibular joint (TMJ) articular TMDs, 8 for the management of bruxism, and 3 to treat masseter hypertrophy. A total of 411 patients were treated by injection of BTX. Wide variability was found in the methods of injection and in the doses injected. Many trials concluded superiority of BTX injections over placebo for reducing TMD pain levels and improving maximum mouth opening; however, this was not universal. CONCLUSION: There is good scientific evidence to support the use of BTX injections for treatment of masseter hypertrophy and equivocal evidence for myogenous TMDs, but very little for TMJ articular disorders. Studies with improved methodologic design are needed to gain better insight into the utility and effectiveness of BTX injections for treating both myogenous and TMJ articular TMDs and to establish suitable protocols for treating different TMDs.

Revisión sistemática

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Clinical efficacy of local injection therapies for lateral epicondylitis: A systematic review and network meta-analysis.

Revista Caspian journal of internal medicine
Año 2022
Enlaces Pubmed DOI PubMed Central

Este artículo incluye 31 Estudios primarios 31 Estudios primarios (31 referencias)

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BACKGROUND: We aimed to compare the efficacy of local injection therapies for lateral epicondylitis in a Bayesian framework. METHODS: We searched the Embase, PubMed, Cochrane Central Register of Controlled Trials, Web of Science, Scopus, and ProQuest, for randomized controlled trials published from inception to February 2021 in any languages. The injection therapies included corticosteroids (CSs), autologous blood (AB), botulinum toxin (BT), and platelet-rich plasma (PRP). Placebo was the reference group for comparison. The study outcomes were pain, function, and strength, at 1, 3 and 6 months after injection. RESULTS: Thirty-one trials were finally included in this network meta-analysis, comprising 1,948 patients. In the first month of treatment, CS and BT were more efficacious than placebo in terms of pain reduction, and CS was superior to BT. In the same follow-up time, CS was also superior to placebo in terms of functional improvement. In the third month of treatment, BT was the only intervention that was more efficient than placebo in pain relief. With regard to functional improvement, none of the treatments significantly had a higher effectiveness than placebo in the same period. Moreover, no therapies were found to be more efficient than placebo in the sixth month of treatment in terms of any study outcomes. In addition, we did not identify an intervention superior to placebo regarding strength improvement outcome in any times of follow-up. CONCLUSION: CSs and BT are efficient in improving clinical outcomes of lateral epicondylitis in the short term. Also, the efficacy of CSs seems to be greater than BT. On the other hand, AB and PRP were not significantly more efficient than placebo in any times of follow-up.

Revisión sistemática

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Efficacy of botulinum-A for nocturnal bruxism pain and the occurrence of bruxism events: A meta analysis and systematic review

Revista British Journal of Oral and Maxillofacial Surgery
Año 2022
Enlaces Pubmed DOI https://www.sciencedirect.com/science/article/pii/S0266435621001121

Este artículo incluye 6 Estudios primarios 6 Estudios primarios (6 referencias)

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PURPOSE: The purpose of this study is to explore the treatment efficacy of botulinum-A (BTX-A) in nocturnal bruxism. MATERIALS AND METHODS: Five electronic databases (PubMed, Web of Science, Cochrane, Embase and Clinical Trials) were searched to identify related randomized controlled trials through September 1, 2020. Five evaluation indexes were extracted, namely, the pain at rest and at chewing (PR and PC), the number of bruxism events (NBEs) and the self-assessment by patients (SA), to assess the treatment efficacy of BTX-A in bruxism. All data analyses were conducted using Review Manager (Version 5.3; The Cochrane Collaboration, London, United Kingdom). RESULT: Six studies were included in this review. The sample was composed of 148 participants. Compared with the placebo group, the BTX-A group showed the significantly improved the PR index scores (MD, 1.16 cm; 95%CI, 0.65 to 1.67 cm; P < 0.00001), slightly improved the PC index scores (SMD, 0.25; 95%CI -0.14 to 0.64; P = 0.21), and the NBEs were significantly decreased in the before-injection group compared with that in the after-injection group (MD, 1.72; 95%CI, 0.60 to 2.85; P = 0.003). CONCLUSIONS: The results of this study suggest that BTX-A possesses significant therapeutic efficiency for the relief of pain and events of bruxism. However, whether the events of bruxism would recur or rebound after botulinum toxin injection needs more follow-up clinical evidence.

Revisión sistemática

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Clinical outcomes of botulinum toxin type A injections in the management of primary bruxism in adults: A systematic review.

Revista The Journal of prosthetic dentistry
Año 2021
Enlaces Pubmed DOI

Este artículo incluye 10 Estudios primarios 10 Estudios primarios (10 referencias)

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STATEMENT OF PROBLEM: Botulinum toxin has been used for various therapeutic and esthetic purposes for nearly 4 decades and has shown positive outcomes in patients with bruxism. However, the effectiveness of botulinum toxin injections as an alternative to traditional therapies in the management of primary bruxism is still unclear. PURPOSE: The purpose of this systematic review was to analyze the clinical outcomes of the use of botulinum toxin type A injections in the management of primary bruxism in adults. MATERIAL AND METHODS: Databases such as PubMed, Web of Science, Scopus, LILIACS, Cochrane Library, and Open Grey Literature were searched without language or date restrictions until October 6, 2019. Using Mendeley Desktop software to organize the references, 2 independent researchers selected the published clinical studies (Study type) on the improvement of symptoms (Outcome) in human adults with primary bruxism (Participants/Population) who received botulinum toxin type A injections (Intervention), placebo injections, saline injections, no injections, or other treatments (Comparator(s)/Control) for the management of bruxism. RESULTS: A total of 601 references were initially obtained from the 6 databases. Six randomized clinical trials and 4 case series were selected and critically appraised according to the Fowkes and Fulton guidelines. Heterogeneity among the studies did not allow for a meta-analysis. All studies supported the efficacy and safety of botulinum toxin injections in reducing the symptoms of primary bruxism. CONCLUSIONS: Botulinum toxin type A injections are effective in the treatment of the symptoms of primary bruxism in adults. Randomized clinical trials are still needed to establish a protocol for using botulinum toxin as an alternative to traditional therapies in the management of primary bruxism.

Revisión sistemática

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The effect of botulinum toxin injections on bruxism: A systematic review.

Autores Ågren M , Sahin C , Pettersson M
Revista Journal of oral rehabilitation
Año 2020
Enlaces Pubmed DOI

Este artículo incluye 4 Estudios primarios 4 Estudios primarios (4 referencias)

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Botulinum neurotoxins are produced by the gram-positive anaerobic bacteria Clostridium botulinum, of which several different serotypes have been identified 1,2 . Botulinum neurotoxin type A (BTA) is clinically used the most due to the longer duration of its effect 3,4 and is the focus of this article. One of the first to investigate BTA was Brooks, as he in 1953, showed that when injecting BTA in muscle tissue it inhibited the release of Acetylcholine (ACh) at the neuromuscular junction and rendered motor nerve filaments unexcitable 3 . It has since been shown that BTA inhibits synaptosomal nerve-associated protein 25 (SNAP-25), a protein involved in the release of ACh filled vesicles into the synaptic cleft through the assembly of the soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptors (SNARE) complex, which is necessary for docking and fusing neurotransmitter vesicles with neuronal membranes.

Revisión sistemática

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Botulinum toxin in the management of temporomandibular disorders: a systematic review

Revista Br. J. Oral Maxillofac. Surg.
Año 2020
Enlaces Pubmed DOI

Este artículo incluye 7 Estudios primarios 7 Estudios primarios (7 referencias)

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Revisión sistemática

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Botulinum toxin type a for painful temporomandibular disorders: Systematic review and meta-analysis.

Revista The journal of pain : official journal of the American Pain Society
Año 2020
Enlaces Pubmed DOI

Este artículo incluye 6 Estudios primarios 6 Estudios primarios (6 referencias)

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This systematic review investigated the effectiveness and safety of botulinum toxin type A (BTX-A) for painful temporomandibular disorders. We searched for randomized controlled trials (RCTs) in 10 databases, from inception to February 12, 2019 (MEDLINE, EMBASE, CENTRAL, LILACS, BBO, Web of Science, Scopus, ClinicalTrials.gov, WHO and OpenGrey). We included 12 RCTs that compared BTX-A versus inactive or active interventions. BTX-A was slightly more effective than placebo for pain reduction at 1 month: mean difference −1.74 points (0–10 scale), 95% confidence interval −2.94 to −.54, 3 RCTs, 60 participants, I-square (I²) = 0%. However, there were no significant differences at 3 and 6 months. BTX-A was similar to no treatment for pain reduction at 3 and 6 months. BTX-A was more effective than conventional treatment and low-level laser therapy for pain reduction at 1, 6, and 12 months, but less effective than facial manipulation for pain reduction at 3 months. BTX-A was not associated with a significant increase in the risk of adverse events. The quality of the evidence was low, and results are insufficient to support the use of BTX-A for painful temporomandibular disorders. High-quality RCTs are needed to increase confidence in effect estimates. PERSPECTIVE: BTX-A for painful temporomandibular disorders appears to be well tolerated. For pain reduction, BTX-A is slightly more effective than placebo only at 1 month; conventional treatment and low-level laser at 1, 6, and 12 months. Low-quality evidence limits the applicability of these findings and precludes recommendations for practice. (PsycInfo Database Record (c) 2022 APA, all rights reserved)

Revisión sistemática

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Needling therapies in the management of myofascial pain of the masticatory muscles: A network meta‐analysis of randomised clinical trials.

Revista Journal of oral rehabilitation
Año 2020
Enlaces Pubmed DOI

Este artículo incluye 20 Estudios primarios 20 Estudios primarios (20 referencias)

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OBJECTIVE: A network meta‐analysis (NMA) of randomised clinical trials (RCTs) was performed aiming to compare the treatment outcome of dry needling, acupuncture or wet needling using different substances in managing myofascial pain of the masticatory muscles (TMD‐M). METHOD: An electronic search was undertaken to identify RCTs published until September 2019, comparing dry needling, acupuncture or wet needling using local anaesthesia (LA), botulinum toxin‐A (BTX‐A), granisetron, platelet‐rich plasma (PRP) or passive placebo versus real active placebo in patients with TMD‐M. RCTs meeting the inclusion criteria were stratified according to the follow‐up time: immediate post‐treatment to 3 weeks, and 1 to 6 months post‐treatment. Outcome variables were post‐treatment pain intensity, increased mouth opening (MMO) and pressure threshold pain (PPT). The quality of evidence was rated according to Cochrane's tool for assessing risk of bias. Mean difference (MD) was used to analysed via frequentist NMA using Stata software. RESULTS: Twenty‐one RCTs involving 959 patients were included. The quality of evidence of the included studies was low or very low. There was significant pain decrease after PRP when compared to an active/passive placebo and acupuncture. There was a significant improvement of MMO after LA (MD = 3.65; CI: 1.18‐6.1) and dry needling therapy (MD = 2.37; CI: 0.66‐4) versus placebo. The three highest ranked treatments for short‐term post‐treatment pain reduction in TMD‐M (1‐20 days) were PRP (95.8%), followed by LA (62.5%) and dry needling (57.1%), whereas the three highest ranked treatments at intermediate‐term follow‐up (1‐6 months) were LA (90.2%), dry needling (66.1%) and BTX‐A (52.1%) (all very low‐quality evidence). LA (96.4%) was the most effective treatment regarding the increase in MMO followed by dry needling (72.4%). CONCLUSION: Based on this NMA, one can conclude that the effectiveness of needling therapy did not depend on needling type (dry or wet) or needling substance. The outcome of this NMA suggests that LA, BTX‐A, granisetron and PRP hold some promise as injection therapies, but no definite conclusions can be drawn due to the low quality of evidence of the included studies. This NMA did not provide enough support for any of the needling therapies for TMD‐M.

Revisión sistemática

No clasificado

A systematic review of botulinum toxin in the management of patients with temporomandibular disorders and bruxism.

Autores Patel J , Cardoso JA , Mehta S
Revista British dental journal
Año 2019
Enlaces Pubmed DOI

Este artículo incluye 11 Estudios primarios 11 Estudios primarios (11 referencias)

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Introduction The medical and cosmetic use of botulinum toxin (BTX) is now widespread. With an increased number of clinicians adopting the use of BTX in the management of temporomandibular disorders (TMD) and/or bruxism, as either a standalone treatment or as an adjunct, affirmation is required in regards to whether it has a clinically justifiable position among the current spectrum of available treatment modalities.Objectives To establish the usefulness of BTX when treating patients with TMD and/or bruxism, and thereby determine whether there may be an appropriate purpose for the prescription of BTX in the management of these patients.Data sources and data selection A systematic review of the relevant literature was conducted. The literature search was carried out by applying key terms to appropriate data sources (Medline, Embase, Pubmed, Cochrane Central Register of Controlled Trials, and OpenSIGLE). The resultant papers were subjected to inclusion and exclusion criteria, which were then assessed for bias using a framework outlined in the Cochrane Handbook.Results A total of 11 trials met the inclusion criteria. The primary outcome measure was changes in pain experience in groups that had been treated with BTX, relative to an appropriate control group. Secondary outcomes included changes in the frequency of bruxism events, changes in maximum mouth opening, changes in occlusal force and changes in electromyography (EMG) readings of muscles of mastication.Conclusion The evidence to support the use of BTX in the management of TMD and/or bruxism is not entirely unequivocal. A number of studies that have met the inclusion criteria have shown promising results and thereby justify further investigation. Given the current evidence, BTX should certainly be considered but due to financial implications and possible side effects, it seems appropriate that conservative options, such as self-management with explanation and physical therapies, should be exhausted first.