Publicação
Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial
| Resumo: | Background: This study aimed to elucidate the effects of botulinum toxin A (BoNT-A) treatment for patients diagnosed with masseter hypertrophy on the temporalis muscle, with a particular focus on assessing alterations in muscle thickness, electromyographic (EMG) activity, and the development of muscle pain. Methods: The present randomized triple-blinded clinical trial enrolled 26 female participants aged between 25 and 50 years complaining about masseter hypertrophy. Participants received 75U of BoNT-A (abobotulinumtoxinA) in both masseter muscles and after three months were randomized to receive a second treatment session of saline solution (S-BoNT-A) or BoNT-A (M-BoNT-A). Longitudinal assessments included temporalis muscle thickness through ultrasound, EMG activity, subjective pain, and masseter prominence severity after one, three, and six months of the first injection session. Muscle thickness, EMG, and subjective pain were analysed using two-way ANOVA with repeated measures and post hoc Sidak test, and for masseter prominence severity, Friedman and Mann–Whitney tests were used. Results: Regarding inter-group comparisons, a higher muscle thickness (p < 0.02) and a higher EMG activity (p < 0.01) were found in the M-BoNT-A group at the 6-month follow-up. For subjective pain assessments, inter-group comparisons showed a higher prevalence of painful regions in M-BoNT-A group at the 6-month follow-up (p < 0.02). No significant differences were found in masseter prominence severity at the 6 months assessment between groups. Conclusion: BoNT-A treatment for masseter hypertrophy lead to structural and functional changes in the temporalis muscle, presenting higher changes after multiple injections of this treatment. |
|---|---|
| Autores principais: | Nobre, Bryanne B. de Souza |
| Outros Autores: | Machado, Luciana de Oliveira Resende; Poluha, Rodrigo Lorenzi; Câmara-Souza, Mariana Barbosa; Carbone, Ana Claudia; Almeida, Andre Mariz de; Grigoriadis, Anastasios; Kumar, Abhishek; Canales, Giancarlo De la Torre |
| Assunto: | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | contribuição para revista |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| Idioma: | inglês |
| Origem: | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| _version_ | 1868695868375302144 |
|---|---|
| author | Nobre, Bryanne B. de Souza |
| author2 | Machado, Luciana de Oliveira Resende Poluha, Rodrigo Lorenzi Câmara-Souza, Mariana Barbosa Carbone, Ana Claudia Almeida, Andre Mariz de Grigoriadis, Anastasios Kumar, Abhishek Canales, Giancarlo De la Torre |
| author2_role | author author author author author author author author |
| author_facet | Nobre, Bryanne B. de Souza Machado, Luciana de Oliveira Resende Poluha, Rodrigo Lorenzi Câmara-Souza, Mariana Barbosa Carbone, Ana Claudia Almeida, Andre Mariz de Grigoriadis, Anastasios Kumar, Abhishek Canales, Giancarlo De la Torre |
| author_role | author |
| contributor_name_str_mv | Repositório Comum |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Nobre, Bryanne B. de Souza\"},{\"Person.name\":\"Machado, Luciana de Oliveira Resende\"},{\"Person.name\":\"Poluha, Rodrigo Lorenzi\"},{\"Person.name\":\"Câmara-Souza, Mariana Barbosa\"},{\"Person.name\":\"Carbone, Ana Claudia\"},{\"Person.name\":\"Almeida, Andre Mariz de\"},{\"Person.name\":\"Grigoriadis, Anastasios\"},{\"Person.name\":\"Kumar, Abhishek\"},{\"Person.name\":\"Canales, Giancarlo De la Torre\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório Comum |
| datacite.creators.creator.creatorName.fl_str_mv | Nobre, Bryanne B. de Souza Machado, Luciana de Oliveira Resende Poluha, Rodrigo Lorenzi Câmara-Souza, Mariana Barbosa Carbone, Ana Claudia Almeida, Andre Mariz de Grigoriadis, Anastasios Kumar, Abhishek Canales, Giancarlo De la Torre |
| datacite.date.Accepted.fl_str_mv | 2024-10-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2026-04-23T15:50:45Z |
| datacite.date.embargoed.fl_str_mv | 2026-04-23T15:50:45Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| datacite.titles.title.fl_str_mv | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| dc.contributor.none.fl_str_mv | Repositório Comum |
| dc.creator.none.fl_str_mv | Nobre, Bryanne B. de Souza Machado, Luciana de Oliveira Resende Poluha, Rodrigo Lorenzi Câmara-Souza, Mariana Barbosa Carbone, Ana Claudia Almeida, Andre Mariz de Grigoriadis, Anastasios Kumar, Abhishek Canales, Giancarlo De la Torre |
| dc.date.Accepted.fl_str_mv | 2024-10-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2026-04-23T15:50:45Z |
| dc.date.embargoed.fl_str_mv | 2026-04-23T15:50:45Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.26/62851 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Springer Nature |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| dc.title.fl_str_mv | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_3e5a |
| description | Background: This study aimed to elucidate the effects of botulinum toxin A (BoNT-A) treatment for patients diagnosed with masseter hypertrophy on the temporalis muscle, with a particular focus on assessing alterations in muscle thickness, electromyographic (EMG) activity, and the development of muscle pain. Methods: The present randomized triple-blinded clinical trial enrolled 26 female participants aged between 25 and 50 years complaining about masseter hypertrophy. Participants received 75U of BoNT-A (abobotulinumtoxinA) in both masseter muscles and after three months were randomized to receive a second treatment session of saline solution (S-BoNT-A) or BoNT-A (M-BoNT-A). Longitudinal assessments included temporalis muscle thickness through ultrasound, EMG activity, subjective pain, and masseter prominence severity after one, three, and six months of the first injection session. Muscle thickness, EMG, and subjective pain were analysed using two-way ANOVA with repeated measures and post hoc Sidak test, and for masseter prominence severity, Friedman and Mann–Whitney tests were used. Results: Regarding inter-group comparisons, a higher muscle thickness (p < 0.02) and a higher EMG activity (p < 0.01) were found in the M-BoNT-A group at the 6-month follow-up. For subjective pain assessments, inter-group comparisons showed a higher prevalence of painful regions in M-BoNT-A group at the 6-month follow-up (p < 0.02). No significant differences were found in masseter prominence severity at the 6 months assessment between groups. Conclusion: BoNT-A treatment for masseter hypertrophy lead to structural and functional changes in the temporalis muscle, presenting higher changes after multiple injections of this treatment. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | contributionToPeriodical |
| fulltext.url.fl_str_mv | https://comum.rcaap.pt/bitstreams/2f13352f-c15c-4851-9d43-1f68447400f7/download |
| id | em_eeab928622b416ad3bc075cb4e53d25e |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.26/62851 |
| instacron_str | em |
| institution | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| instname_str | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| language | eng |
| network_acronym_str | em |
| network_name_str | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| oai_identifier_str | oai:comum.rcaap.pt:10400.26/62851 |
| organization_str_mv | urn:organizationAcronym:em |
| person_str_mv | Nobre, Bryanne B. de Souza Machado, Luciana de Oliveira Resende Poluha, Rodrigo Lorenzi Câmara-Souza, Mariana Barbosa Carbone, Ana Claudia Almeida, Andre Mariz de Grigoriadis, Anastasios Kumar, Abhishek Canales, Giancarlo De la Torre |
| publishDate | 2024 |
| publisher.none.fl_str_mv | Springer Nature |
| reponame_str | Egas Moniz - Cooperativa de Ensino Superior, CRL |
| repository_id_str | urn:repositoryAcronym:em |
| service_str_mv | urn:repositoryAcronym:em |
| spelling | engSpringer NatureengBackground: This study aimed to elucidate the effects of botulinum toxin A (BoNT-A) treatment for patients diagnosed with masseter hypertrophy on the temporalis muscle, with a particular focus on assessing alterations in muscle thickness, electromyographic (EMG) activity, and the development of muscle pain. Methods: The present randomized triple-blinded clinical trial enrolled 26 female participants aged between 25 and 50 years complaining about masseter hypertrophy. Participants received 75U of BoNT-A (abobotulinumtoxinA) in both masseter muscles and after three months were randomized to receive a second treatment session of saline solution (S-BoNT-A) or BoNT-A (M-BoNT-A). Longitudinal assessments included temporalis muscle thickness through ultrasound, EMG activity, subjective pain, and masseter prominence severity after one, three, and six months of the first injection session. Muscle thickness, EMG, and subjective pain were analysed using two-way ANOVA with repeated measures and post hoc Sidak test, and for masseter prominence severity, Friedman and Mann–Whitney tests were used. Results: Regarding inter-group comparisons, a higher muscle thickness (p < 0.02) and a higher EMG activity (p < 0.01) were found in the M-BoNT-A group at the 6-month follow-up. For subjective pain assessments, inter-group comparisons showed a higher prevalence of painful regions in M-BoNT-A group at the 6-month follow-up (p < 0.02). No significant differences were found in masseter prominence severity at the 6 months assessment between groups. Conclusion: BoNT-A treatment for masseter hypertrophy lead to structural and functional changes in the temporalis muscle, presenting higher changes after multiple injections of this treatment.application/pdfengTemporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trialNobre, Bryanne B. de SouzaMachado, Luciana de Oliveira ResendePoluha, Rodrigo LorenziCâmara-Souza, Mariana BarbosaCarbone, Ana ClaudiaAlmeida, Andre Mariz deGrigoriadis, AnastasiosKumar, AbhishekCanales, Giancarlo De la TorreHostingInstitutionOrganizationalRepositório Comume-mailmailto:comum@rcaap.ptcomum@rcaap.ptISSNIsPartOf1432-5241DOIIsPartOf10.1007/s00266-024-04064-42026-04-23T15:50:45Z2024-102024-10-01T00:00:00ZHandlehttp://hdl.handle.net/10400.26/62851http://purl.org/coar/access_right/c_abf2open accessBotulinum toxin type AMasseter hypertrophyTemporalis muscle523367 bytesother research producthttp://purl.org/coar/resource_type/c_3e5acontribution to journal2024-10http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://comum.rcaap.pt/bitstreams/2f13352f-c15c-4851-9d43-1f68447400f7/downloadAesthetic Plastic Surgery4839793987 |
| spellingShingle | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial Nobre, Bryanne B. de Souza Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| status | SINGLETON |
| subject.fl_str_mv | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| title | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| title_full | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| title_fullStr | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| title_full_unstemmed | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| title_short | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| title_sort | Temporalis muscle changes following botulinum toxin A injections in masseter hypertrophy patients : a randomized triple-blinded trial |
| topic | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| topic_facet | Botulinum toxin type A Masseter hypertrophy Temporalis muscle |
| url | http://hdl.handle.net/10400.26/62851 |
| visible | 1 |