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Ciavarella D, Lorusso M, Fanelli C, Ferrara D, Esposito R, Laurenziello M, Esperouz F, Lo Russo L, Tepedino M. The Efficacy of the RME II System Compared with a Herbst Appliance in the Treatment of Class II Skeletal Malocclusion in Growing Patients: A Retrospective Study. Dent J (Basel) 2024; 12:254. [PMID: 39195098 DOI: 10.3390/dj12080254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2024] [Revised: 08/03/2024] [Accepted: 08/07/2024] [Indexed: 08/29/2024] Open
Abstract
(1) Background: The objective of this study was to evaluate the efficacy of the Rapid Maxillary Expander (RME) II System compared to a Herbst appliance and a control group in the treatment of class II skeletal malocclusions in growing patients. (2) Methods: A total of 30 class II patients treated using the RME II System (group R) were compared with 30 patients treated with a Herbst appliance (group H) and 30 untreated class II children (group C). Cephalograms were compared at the start (T0) and after 24 months (T1). Nine cephalometric parameters were analyzed: SN-MP, SN-PO, ANB, AR-GO-ME, AR-GO-N, N-GO-ME, SN-PP, LFH, CO-GN, 1+SN, IMPA, OVERJET, and OVERBITE. Since the variables failed the normality test, a Wilcoxon test was performed for a pairwise comparison of the cephalometric measurements taken at T0 (pre-treatment) and at T1 (post-treatment). ANOVA with Tukey post hoc correction was used to evaluate the differences among the groups. (3) Results: ANOVA showed a statistically significant difference for all analyzed variables except for AR-GO-ME, AR-GO-N, and N-GO-ME. Post hoc Tukey's HSD test showed the following difference: the SN-PO angle in group H was 3.59° greater than in group R; the LFH in group H was 4.13 mm greater than in group R. The mandibular length (CO-GN) in group H was 3.94 mm greater than in group R; IMPA in group H was 6.4° greater than in group R; and the ANB angle in group H was 1.47° greater than in group R. (4) Conclusions: The RME II System is an effective therapeutic device for class II skeletal malocclusion treatment in growing patients.
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Affiliation(s)
- Domenico Ciavarella
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Mauro Lorusso
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Carlotta Fanelli
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Donatella Ferrara
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Rosa Esposito
- Department of Biotechnological and Applied Clinical Sciences, Dental School of L'Aquila, University of L'Aquila, 67100 L'Aquila, Italy
| | - Michele Laurenziello
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Fariba Esperouz
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Lucio Lo Russo
- Department of Clinical and Experimental Medicine, Dental School of Foggia, University of Foggia, 71122 Foggia, Italy
| | - Michele Tepedino
- Department of Biotechnological and Applied Clinical Sciences, Dental School of L'Aquila, University of L'Aquila, 67100 L'Aquila, Italy
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Bykova KM. Measurement of surface electromyography activity during swallowing in paediatrics: a scoping literature review. Eur J Pediatr 2024:10.1007/s00431-024-05685-2. [PMID: 39037451 DOI: 10.1007/s00431-024-05685-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 07/23/2024]
Abstract
Surface electromyography (sEMG) could be used for diagnostic and therapeutic purposes in various health conditions. For example, sEMG biofeedback is shown to be beneficial in adults with swallowing disorders (dysphagia), whereas there are no easily identifiable studies to support such evidence in paediatrics. The current review aimed to evaluate the feasibility of implementing sEMG during swallowing tasks in paediatric populations with various diagnoses. Additionally, the review aimed to describe findings in publications involving participants with cerebral palsy (CP) and dysphagia. Paediatric-related publications were sourced using English keywords and phrases across the following seven databases: PubMed, EMBASE, CINAHL, Web of Science, PsycINFO, and ProQuest Dissertations and Theses Global. The search included all available publications without language and date restrictions. Publications using sEMG during chewing tasks were also accepted in the review as chewing is considered to be part of the act of swallowing. The feasibility of measuring sEMG during swallowing in children with various health conditions was supported by 116 publications (n = 6 literature reviews) that met the inclusion criteria for the final full-text review. However, a few publications described some difficulties occurring directly during the sEMG data collection sessions. The review identified 15 publications involving 177 participants with CP who underwent sEMG while swallowing (n = 1 publication focused solely on the assessment of chewing). Ten publications described studies that recruited children with dysphagia. Children with CP who had dysphagia were recruited in five of these studies. CONCLUSIONS The acquisition of sEMG measurements while performing swallowing tasks was shown to be feasible in children with various diagnoses including those who have CP and dysphagia. Future studies should investigate the implementation of sEMG as a part of paediatric dysphagia therapy alongside biofeedback swallowing skill training. WHAT IS KNOWN • Surface electromyography (sEMG) could be implemented for diagnostic and therapeutic purposes in various health conditions. • Biofeedback using sEMG is beneficial in adults with swallowing disorders (dysphagia). WHAT IS NEW • Implementation of sEMG was shown to be feasible during swallowing tasks in paediatric populations with various diagnoses, including dysphagia and cerebral palsy. • The usage of sEMG biofeedback as a part of paediatric dysphagia management should be investigated in future studies.
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Affiliation(s)
- Ksenia M Bykova
- Rose Centre for Stroke Recovery and Research, School of Psychology Speech and Hearing, University of Canterbury, 249 Papanui Road, Christchurch, 8052, New Zealand.
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Szyszka-Sommerfeld L, Sycińska-Dziarnowska M, Cernera M, Esposito L, Woźniak K, Spagnuolo G. Electromyographic Assessment of Muscle Activity in Children Undergoing Orthodontic Treatment-A Systematic Review. J Clin Med 2024; 13:2051. [PMID: 38610819 PMCID: PMC11012508 DOI: 10.3390/jcm13072051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/24/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Background: Surface electromyography (sEMG) can provide an objective and quantitative image of the functional state of neuromuscular balance in the stomatognathic system. The objective of this systematic review is to examine current scientific evidence regarding the effects of orthodontic treatment on muscle electromyographic (EMG) activity in children. Methods: The search strategy included the PubMed, PubMed Central, Web of Science, Scopus, and Embase databases. The inclusion criteria were studies assessing EMG muscle activity in children undergoing orthodontic treatment compared with untreated children. The Cochrane risk-of-bias tool (RoB2) and the Newcastle-Ottawa Scale (NOS) were used to evaluate the quality of the studies. The quality of evidence assessment was performed using GRADE analysis. The PRISMA diagram visually represented the search strategy, as well as screening and inclusion process. Results: The search strategy identified 540 potential articles. Fourteen papers met the inclusion criteria. Six studies were judged at a low risk of bias. The certainty of evidence was rated as moderate to low, according to the GRADE criteria. Studies showed alterations in EMG muscle activity in children undergoing orthodontic treatment. Conclusions: Orthodontic treatment appears to affect muscle activity in children undergoing orthodontic treatment. However, the quality of evidence is low and, therefore, it is not possible to definitively state this effect. Further long-term studies are needed to confirm the findings of this review. Study protocol number in PROSPERO database: CRD42023491005.
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Affiliation(s)
- Liliana Szyszka-Sommerfeld
- Department of Maxillofacial Orthopaedics and Orthodontics, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70111 Szczecin, Poland; (M.S.-D.); (K.W.)
- Laboratory for Propaedeutics of Orthodontics and Facial Congenital Defects, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70111 Szczecin, Poland
| | - Magdalena Sycińska-Dziarnowska
- Department of Maxillofacial Orthopaedics and Orthodontics, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70111 Szczecin, Poland; (M.S.-D.); (K.W.)
| | - Mariangela Cernera
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Napoli, Italy; (M.C.); (L.E.); (G.S.)
| | - Luigi Esposito
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Napoli, Italy; (M.C.); (L.E.); (G.S.)
| | - Krzysztof Woźniak
- Department of Maxillofacial Orthopaedics and Orthodontics, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70111 Szczecin, Poland; (M.S.-D.); (K.W.)
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Napoli, Italy; (M.C.); (L.E.); (G.S.)
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Wu Q, Zhang Y, Xiao H, Zheng J, Jiang T, Du Y, Cao M, Li F. Evaluation of mandibular motion in adolescents with skeletal class II division 1 malocclusion during mandibular advancement using clear functional aligners: a prospective study. BMC Oral Health 2024; 24:320. [PMID: 38461253 PMCID: PMC10924979 DOI: 10.1186/s12903-024-04082-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 02/27/2024] [Indexed: 03/11/2024] Open
Abstract
BACKGROUND This study aimed to evaluate the characteristics of mandibular protrusive condylar trajectory in adolescents with skeletal Class II Division 1 malocclusion and the changes of condylar trajectory during mandibular advancement (MA) treatment using clear functional aligners. METHODS This prospective study consisted of a cross-sectional study and a longitudinal study. In cross-sectional study, sixty-one adolescents were divided into two groups: Class I (n = 30) and Class II Division 1 (n = 31). The condylar trajectory was measured and compared using the Mann-Whitney U test. The longitudinal study was the MA treatment group using clear functional aligner and consisted of 16 participants from Class II Division 1group. The condylar trajectory was collected at three-time points: pre-treatment (T1), during MA treatment at approximately 3 months (T2, 105.6 days average), and at the end of MA treatment (T3, 237.6 days average). The changes at T1, T2, and T3, as well as the symmetry between the left and right condyles across all groups, were examined using the Wilcoxon paired test. RESULTS A greater increase in the anteroposterior displacement and space displacement during protrusive movements was observed in the Class II Division 1 group compared with that in the Class I group, with a large difference being observed in the left and right condylar movements. The condylar anteroposterior displacement and space displacement decreased significantly at T2 and increased significantly at T3; however, no significant difference was observed between T1 and T3. A significant difference was observed between the condylar movement on the left and right sides at T1; however, no significant difference was observed at T2 and T3. CONCLUSIONS Adolescents with Class II Division 1 malocclusion had higher protrusive capacity than those with Class I. Moreover, their left and right condylar motion was more asymmetric. The range of condyle motion decreased first and then increased during MA therapy, and the left and right condyle movement became more symmetrical, which may be the adaptive response of neuromuscular function to the changes in jaw position.
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Affiliation(s)
- Qiuyue Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Yueying Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Hua Xiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Jiajing Zheng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Tianlu Jiang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Yusen Du
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Meng Cao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China.
| | - Feifei Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, National Clinical Research Center for Oral Diseases, The Third Affiliated Hospital of Air Force Medical University, Xi'an, Shaanxi, 710032, People's Republic of China.
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Fatima K, Qureshi T. Queries regarding cephalometric effects of Twin-block and van Beek Headgear-Activator in the correction of Class II malocclusion. Am J Orthod Dentofacial Orthop 2023; 163:587. [PMID: 37142348 DOI: 10.1016/j.ajodo.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 01/31/2023] [Indexed: 05/06/2023]
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Zhang Q, Liu G, Liu R, Liu J, Zeng X, Ren D, Yan X, Yuan X. Dual role of endoplasmic reticulum stress-ATF-6 activation in autophagy and apoptosis induced by cyclic stretch in myoblast. Apoptosis 2023; 28:796-809. [PMID: 36881290 DOI: 10.1007/s10495-023-01825-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2023] [Indexed: 03/08/2023]
Abstract
OBJECTIVE Mandibular growth that is induced by functional appliances is closely associated with skeletal and neuromuscular adaptation. Accumulating evidence has proved that apoptosis and autophagy have a vital role in adaptation process. However, little is known about the underlying mechanisms. This study sought to determine whether ATF-6 is involved in stretch-induced apoptosis and autophagy in myoblast. The study also sought to uncover the potential molecular mechanism. MATERIALS AND METHODS Apoptosis was assessed by TUNEL and Annexin V and PI staining. Autophagy was detected by transmission electron microscopy (TEM) analysis and immunofluorescent staining for autophagy-related protein light chain 3 (LC3). Real time-PCR and western blot were performed to evaluate the expression level of mRNA and proteins that were associated with endoplasmic reticulum stress (ERS), autophagy and apoptosis. RESULTS Cyclic stretch significantly decreased the cell viability and induced apoptosis and autophagy of myoblasts time-dependently. Stretching stimuli activated ATF-6 pathway and induced ERS-mediated apoptosis. Moreover, using 4-PBA significantly inhibited ERS-related apoptosis, as well as partially decreasing autophagy. In addition, inhibition of autophagy by 3-MA enhanced apoptosis by affecting the expression of CHOP and Bcl-2. However, it had no obvious effects on ERS-related proteins of GRP78 and ATF-6. More importantly, knockdown ATF-6 effectively weakened apoptosis and autophagy. It did so by regulating the expression of Bcl-2, Beclin1 and CHOP, but not cleaved Caspase-12, LC3II and p62 in stretched myoblast. CONCLUSION ATF-6 pathway was activated in myoblast by mechanical stretch. ATF-6 may regulate the process of stretch-induced myoblast apoptosis and autophagy via CHOP, Bcl-2 and Beclin1 signaling.
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Affiliation(s)
- Qiang Zhang
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China.,School of Stomatology, Qingdao University, Qingdao, China
| | - Guirong Liu
- Department of Stomatology, Qingdao Municipal Hospital, Qingdao, China
| | - Ran Liu
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jun Liu
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China.,School of Stomatology, Qingdao University, Qingdao, China
| | - Xuemin Zeng
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China.,School of Stomatology, Qingdao University, Qingdao, China
| | - Dapeng Ren
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China.,School of Stomatology, Qingdao University, Qingdao, China
| | - Xiao Yan
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China. .,School of Stomatology, Qingdao University, Qingdao, China.
| | - Xiao Yuan
- Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, China. .,School of Stomatology, Qingdao University, Qingdao, China.
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Zhan Y, Yang M, Bai S, Zhang S, Huang Y, Gong F, Nong X. Effects of orthodontic treatment on masticatory muscles activity: a meta-analysis. Ann Hum Biol 2023; 50:465-471. [PMID: 37929786 DOI: 10.1080/03014460.2023.2271840] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023]
Abstract
Context: A comprehensive meta-analysis was carried out to investigate the impact of orthodontics on masticatory muscles.Methods: A thorough search of various databases, including CNKI, Wan Fang, VIP, CBM, MEDLINE, PubMed, Cochrane Library, EMBASE, Web of Science, and Google Scholar, was performed to identify relevant studies on patients undergoing orthodontics or functional corrections. Six case-control studies were finally included in this analysis, which specifically examined the effect of orthodontic treatment on masticatory muscle function.Results: The results revealed that the mean masticatory muscle voltage in patients treated with orthodontics was found to be higher after treatment compared to before treatment [odds ratio (OR)=1.57, 95% confidence interval (CI) (0.57, 2.57), p = 0.002], which could potentially have an impact on masticatory muscle function, particularly in individuals with Class II Division 1 malocclusion.Conclusion: These findings contribute to our understanding of the effects of orthodontic interventions on masticatory muscles, further highlighting the importance of orthodontics in optimising masticatory function.
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Affiliation(s)
- Yuxiang Zhan
- Department of Maxillofacial Surgery, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Minjie Yang
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Shuoqiu Bai
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Siqin Zhang
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Yunqin Huang
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Fansheng Gong
- Department of Maxillofacial Surgery, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaolin Nong
- Department of Maxillofacial Surgery, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
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Stefanovic NL, Uhac M, Brumini M, Zigante M, Perkovic V, Spalj S. Predictors of patient compliance during Class II division 1 malocclusion functional orthodontic treatment. Angle Orthod 2021; 91:502-508. [PMID: 33587107 DOI: 10.2319/090820-780.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/01/2020] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To determine factors that could predict Class II/1 malocclusion patient compliance during functional treatment. MATERIALS AND METHODS The sample consisted of 77 subjects (aged 11-13 years; 47% girls) presenting with Class II/1 malocclusion. Inclusion criteria were distal molar relationship, overjet greater than 5 mm, and confirmed pubertal growth spurt. Removable functional appliances (62% Twin Block [TB], 38% Sander Bite Jumping [BJ]) with built-in maxillary expansion screws were used. Follow-up period was 1 year. Patients and parents independently filled out the Child Perception Questionnaire, Parental/Caregiver Perception Questionnaire, and Family Impact Scale to assess emotional and social well-being, oral symptoms, functional limitations, parental emotions, family activities, conflicts, and financial burden as possible predictors of compliance during treatment. Sex, overjet, and appliance type were also analyzed. RESULTS There were more noncompliant than compliant patients (55% vs 45%). Parental perception of altered emotional well-being of their children was the strongest predictor, increasing compliance odds 3.4 times (95% confidence interval [CI], 1.2-9.4; P = .017). Patients were 3.2 times (95% CI, 1.1-9.3; P = .033) more likely to cooperate with TB compared with BJ appliance. OJ ≥ 8 mm increased compliance odds 3.1 times (95% CI, 1.0-9.4; P = .044). CONCLUSIONS Parental perception of child's emotional well-being alteration, severity of malocclusion, and type of appliance are major predictors of compliance. Psychosocial issues and oral function limitations reported by children and family impact are of negligible influence.
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Behroozian A, Kalman L. Clear Twin Block: A Step Forward in Functional Appliances. DENTAL HYPOTHESES 2020. [DOI: 10.4103/denthyp.denthyp_14_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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10
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Effects of wear time differences of removable functional appliances in class II patients: prospective MRI study of TMJ and masticatory muscle changes. Oral Radiol 2019; 36:47-59. [DOI: 10.1007/s11282-019-00379-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 02/03/2019] [Indexed: 12/20/2022]
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Di Palma E, Tepedino M, Chimenti C, Tartaglia GM, Sforza C. Effects of the functional orthopaedic therapy on masticatory muscles activity. J Clin Exp Dent 2017; 9:e886-e891. [PMID: 28828155 PMCID: PMC5549586 DOI: 10.4317/jced.53986] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 05/27/2017] [Indexed: 11/09/2022] Open
Abstract
Background The purpose of this study was to examine surface electromyographic (sEMG) activity of masticatory muscles before and after functional orthopaedic therapy with Sander appliance. Material and Methods Ten adolescents (5 girls, 5 boys) with an Angle Class II, division I malocclusion, 9-13 years old, were submitted to sEMG before and after functional orthopaedic therapy. To verify the neuromuscular equilibrium, the standardized EMG activities of right and left masseter and anterior temporal muscles were recorded during maximum voluntary clench, and analysed calculating: POC (index of the symmetric distribution of the muscular activity determined by the occlusion); TC (index of presence of mandibular torque) and Ac (index suggesting the position of occlusal barycentre). The total muscular activity was also calculated. Pre- and post- functional therapy data were compared with Wilcoxon Signed-Rank Test. Results Before treatment, all subjects had a good neuromuscular equilibrium, which was not altered by treatment. Conclusions sEMG evaluations allow to quantify the impact of occlusion on masticatory muscle activity and to control that the functional orthopaedic therapy maintain a good muscular coordination. Key words:Functional appliance, Sander appliance, electromyography, masticatory muscles.
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Affiliation(s)
- Elena Di Palma
- DDS, PhD, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Michele Tepedino
- DDS, PhD, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Claudio Chimenti
- Professor, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Gianluca M Tartaglia
- DDS, PhD, Department of Human Morphology, Functional Anatomy Research Center (FARC), Faculty of Medicine and Surgery, University of Milan, Italy
| | - Chiarella Sforza
- Professor, Department of Human Morphology, Functional Anatomy Research Center (FARC), Faculty of Medicine and Surgery, University of Milan, Italy
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Smailienė D, Intienė A, Dobradziejutė I, Kušleika G. Effect of Treatment with Twin-Block Appliances on Body Posture in Class II Malocclusion Subjects: A Prospective Clinical Study. Med Sci Monit 2017; 23:343-352. [PMID: 28107314 PMCID: PMC5279871 DOI: 10.12659/msm.899088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background There is strong evidence that malocclusion and body posture are interdependent. The relationship between improvement of nasopharyngeal airway, correction of malocclusion by orthodontic treatment or orthognathic surgery, and changes in body posture were evaluated in several studies. The purpose of the present study was to analyze the effect of the orthodontic treatment with Twin-block appliance on body posture. Material/Methods The study group consisted of 23 children (mean age 12.45 (1.06) years). They were orthopedically (back shape analysis) and orthodontically (cephalometric radiograph analysis) examined before the treatment with Twin-block appliance and 10–14 months after the beginning of treatment. Results Treatment with Twin-block appliance caused mandibular protrusion as SNB increased by 0.91°, distance Ar-B increased by 4.9 mm, ANB decreased by 0.15°; and increase of face height. Oropharynx airway increased by 1.54 mm and deep pharynx airway by 1.08 mm. The decrease in kyphotic, lordotic, craniocervical angles, upper thoracic, pelvic, and trunk inclinations was found to be statistically significant. When comparing orthopedic measurements between study and control groups, no differences were detected. The control group also showed reduction of all measured angles. Although the decrease of kyphotic angle, upper thoracic inclination, trunk inclination, and craniocervical angle were more pronounced in the study group, the differences were not significant. Conclusions Based on these results, the body posture changes during treatment with Twin-block appliance were an expression of the physiological growth, not a response to improvement in occlusion.
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Affiliation(s)
- Dalia Smailienė
- Department of Orthodontics, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Aistė Intienė
- Department of Orthodontics, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Irma Dobradziejutė
- Department of Orthopedic Traumatology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Gintaras Kušleika
- Department of Orthopedic Traumatology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
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de Bittencourt Neto AC, Saga AY, Pacheco AAR, Tanaka O. Therapeutic approach to Class II, Division 1 malocclusion with maxillary functional orthopedics. Dental Press J Orthod 2015; 20:99-125. [PMID: 26352852 PMCID: PMC4594316 DOI: 10.1590/2176-9451.20.4.099-125.sar] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
INTRODUCTION: Interceptive treatment of Class II, Division 1 malocclusion is a challenge orthodontists commonly face due to the different growth patterns they come across and the different treatment strategies they have available. OBJECTIVE: To report five cases of interceptive orthodontics performed with the aid of Klammt's elastic open activator (KEOA) to treat Class II, Division 1 malocclusion. METHODS: Treatment comprehends one or two phases; and the use of functional orthopedic appliances, whenever properly recommended, is able to minimize dentoskeletal discrepancies with consequent improvement in facial esthetics during the first stage of mixed dentition. The triad of diagnosis, correct appliance manufacture and patient's compliance is imperative to allow KEOA to contribute to Class II malocclusion treatment. RESULTS: Cases reported herein showed significant improvement in skeletal, dental and profile aspects, as evinced by cephalometric analysis and clinical photographs taken before, during and after interceptive orthodontics.
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Affiliation(s)
| | | | | | - Orlando Tanaka
- School of Health and Biosicences, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, BR
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Coskuner HG, Ciger S. Three-dimensional assessment of the temporomandibular joint and mandibular dimensions after early correction of the maxillary arch form in patients with Class II division 1 or division 2 malocclusion. Korean J Orthod 2015; 45:121-9. [PMID: 26023540 PMCID: PMC4446373 DOI: 10.4041/kjod.2015.45.3.121] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/01/2014] [Accepted: 12/04/2014] [Indexed: 11/23/2022] Open
Abstract
Objective This study aimed to assess three-dimensional changes in the temporomandibular joint positions and mandibular dimensions after correction of dental factors restricting mandibular growth in patients with Class II division 1 or division 2 malocclusion in the pubertal growth period. Methods This prospective clinical study included 14 patients each with Class II division 1 (group I) and Class II division 2 (group II) malocclusions. The quad-helix was used for maxillary expansion, while utility arches were used for intrusion (group I) or protrusion and intrusion (group II) of the maxillary incisors. After approximately 2 months of treatment, an adequate maxillary arch width and acceptable maxillary incisor inclination were obtained. The patients were followed for an average of 6 months. Intraoral and extraoral photographs, plaster models, and cone-beam computed tomography (CBCT) images were obtained before and after treatment. Lateral cephalometric and temporomandibular joint measurements were made from the CBCT images. Results The mandibular dimensions increased in both groups, although mandibular positional changes were also found in group II. There were no differences in the condylar position within the mandibular fossa or the condylar dimensions. The mandibular fossa depth and condylar positions were symmetrical at treatment initiation and completion. Conclusions Class II malocclusion can be partially corrected by achieving an ideal maxillary arch form, particularly in patients with Class II division 2 malocclusion. Restrictions of the mandible in the transverse or sagittal plane do not affect the temporomandibular joint positions in these patients because of the high adaptability of this joint.
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Affiliation(s)
- Hande Gorucu Coskuner
- Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Semra Ciger
- Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
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da Cunha DA, da Silva HJ, Nascimento GKBO, da Silva EGF, da Cunha RA, Régis RMFL, de Castro CMMB. Analysis of the masticatory process of asthmatic children: Clinical and electromyographic research. Int Arch Otorhinolaryngol 2015; 16:358-64. [PMID: 25991958 PMCID: PMC4399629 DOI: 10.7162/s1809-97772012000300010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 04/03/2012] [Indexed: 11/11/2022] Open
Abstract
Introduction: The prevalence of asthma has grown considerably in recent decades, but some studies have shown stabilization of this trend. The masticatory process of asthmatic children may be altered due to asthma-related anatomo-functional changes. Objective: The study objective was to determine the clinical and electromyographic characteristics of the masticatory process in asthmatic children and compare the electrical activities of their masseter and anterior temporal muscles (at rest and during maximal voluntary contraction and mastication) with those of non-asthmatic children. Method: Case study. Asthmatic and non-asthmatic groups, each consisting of 30 children of both sexes between 6 and 10 years of age, were evaluated. Mastication was evaluated clinically and electromyographically in all subjects. RESULTS: The masticatory process did not differ significantly between asthmatic and non-asthmatic children. Conclusion: Although the masticatory process did not differ significantly between asthmatic and non-asthmatic children, the masticatory process of asthmatic children may be altered because of anatomical changes of Asthma.
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Gomes AF, Nejaim Y, Brasil DM, Groppo FC, Ferreira Caria PH, Haiter Neto F. Assessment of Volume and Height of the Coronoid Process in Patients With Different Facial Types and Skeletal Classes: A Cone-Beam Computed Tomography Study. J Oral Maxillofac Surg 2015; 73:1395.e1-5. [PMID: 25976692 DOI: 10.1016/j.joms.2015.02.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 01/16/2015] [Accepted: 02/19/2015] [Indexed: 11/25/2022]
Abstract
PURPOSE To determine the height and volume of the mandibular coronoid process (CP) by cone-beam computed tomography (CBCT) and to identify the presence of any correlations of these measurements with age, gender, facial type, and skeletal class. MATERIALS AND METHODS The sample consisted of 132 patients from a departmental routine patient base. After CBCT, CP height was determined using OnDemand 3D software (CyberMed, Seoul, Republic of Korea), and CP volume was obtained using ITK-SNAP 3.0 software (Cognitica, Philadelphia, PA). Measurements were subjected to analysis of covariance against facial type, skeletal class, gender, and age, with a significance level of 5%. RESULTS CP height and volume were similar regardless of age, facial type, and skeletal class. However, the 2 measurements were statistically different regarding gender, with larger values for men than for women. CONCLUSIONS These observations suggest that gender is the only factor influencing the height and volume of the CP.
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Affiliation(s)
- Amanda Farias Gomes
- Master's Student, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil.
| | - Yuri Nejaim
- PhD Student, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil
| | - Danieli Moura Brasil
- Master's Student, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil
| | - Francisco C Groppo
- Professor, Department of Physiological Sciences, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil
| | - Paulo H Ferreira Caria
- Associate Professor, Department of Morphology, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil
| | - Francisco Haiter Neto
- Professor, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil
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Melgaço CA, Neto JC, Jurach EM, Nojima MDCG, Nojima LI. Immediate changes in condylar position after rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2014; 145:771-9. [DOI: 10.1016/j.ajodo.2014.01.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/01/2014] [Accepted: 01/01/2014] [Indexed: 11/15/2022]
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Functional and fixed orthodontic treatment in a child with cerebral palsy. Am J Orthod Dentofacial Orthop 2014; 145:523-33. [DOI: 10.1016/j.ajodo.2013.06.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 06/01/2013] [Accepted: 06/01/2013] [Indexed: 11/24/2022]
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Farronato G, Giannini L, Galbiati G, Grillo E, Maspero C. Occlus-o-Guide® versus Andresen activator appliance: neuromuscular evaluation. Prog Orthod 2013; 14:4. [PMID: 24325935 PMCID: PMC3847849 DOI: 10.1186/2196-1042-14-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 04/16/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of the present study was to assess the muscular variations at the electromyography (EMG) level for the anterior temporalis muscles and masseter muscles during treatment with Occlus-o-Guide® and Andresen activator appliances. METHODS Eighty-two patients (35 males and 47 females) aged between 8 and 12 years (mean age, 10.5±0.8 years) participated in the study. Fifty patients underwent treatment with an Occlus-o-Guide® and 32 patients with an Andresen activator. All patients underwent EMG examination using a Freely EMG (De Gotzen, Legnano, Italy) and surface bipolar electrodes when the appliances were worn for the first time (T0), and after 6 months (T1) and after 12 months (T2) of appliance use. RESULTS Statistical analysis showed that both at T0 and T2, the percent overlapping coefficient (POC) of the anterior temporalis muscles was not statistically different between the appliance groups. At T0, the POC of the masseter muscles was significantly lower for the Andresen appliance as compared to the Occlus-o-Guide® (p=0.02), while at T2 this significance was lost. CONCLUSIONS At insertion of an appliance, all patients show neuromuscular balance that does not correspond to orthognathic occlusion. Both appliances work by creating muscular imbalance. With the appliances in situ, EMG responses were generally analogous for the Occlus-o-Guide® and the Andresen activator; however, the imbalance was greater and the recovery of the orthological muscular balance was slower in patients under treatment with the Andresen activator as compared to those with the Occlus-o-Guide®.
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Affiliation(s)
- Giampietro Farronato
- Department of Orthodontics, Fondazione IRCCS Cà Granda - Ospedale Maggiore Policlinico, University of Milan, Milan 20122, Italy.
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3-Dimensional Physiologic Postural Range of the Mandible: A Computerized-Assisted Technique—A Case Study. Case Rep Med 2013; 2013:698397. [PMID: 24194764 PMCID: PMC3806511 DOI: 10.1155/2013/698397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/10/2013] [Accepted: 08/23/2013] [Indexed: 11/29/2022] Open
Abstract
Previous studies demonstrated that while the mandible assumes its resting position in space, antagonistic muscles should assume minimal muscle activity within a spatial range. This zone of mandibular rest has been mapped using physiologic parameters of muscle activity and incisal spatial kinematics. This case study expands on previous research by monitoring incisal and posterior jaw position and includes lateral pterygoid muscle activity, thus allowing for determining the spatial range including additional relevant coordinates and muscle activity. Four positions were evaluated: a maximum physiologic open position, a maximum physiologic closed position, physiologic rest position, and maximum physiologic protrusion position. Within the physiologic zone of rest formed by these 4 positions, the vertical and anterior borders of the envelope of function may be documented for the incisal and posterior mandible in true 3-dimensional fashion to assist the clinician in determining a physiologic interocclusal freeway space and vertical dimension of occlusion. Advantages and limitations are discussed.
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Maspero C, Giannini L, Galbiati G, Sesso G. Apparecchiatura funzionale Andreasen e riscontri elettromiografici. Revisione della letteratura. DENTAL CADMOS 2012. [DOI: 10.1016/j.cadmos.2012.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Neuromuscular adaptations with flexible fixed functional appliance – a 2-year follow-up study. J Orofac Orthop 2011; 72:434-45. [DOI: 10.1007/s00056-011-0048-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 08/17/2011] [Indexed: 11/26/2022]
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De Rossi M, De Rossi A, Hallak JEC, Vitti M, Regalo SCH. Electromyographic evaluation in children having rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2009; 136:355-60. [PMID: 19732669 DOI: 10.1016/j.ajodo.2007.08.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2007] [Revised: 08/01/2007] [Accepted: 08/01/2007] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The aim of this study was to analyze the electromyographic activity of the masseter and temporalis muscles of children having rapid maxillary expansion (RME) with a bonded rapid maxillary expansion appliance. METHODS The sample consisted of 27 children (mean age, 8.6 years) with posterior crossbite who required RME treatment. Electromyographic activity of the masseter and temporalis muscles was analyzed before treatment and after the appliance was removed. The mean interval between the 2 analyses was 5 months. Muscular activity was electromyographically analyzed in rest position, and with maximum voluntary dental clenching and chewing. Differences in the 2 measurements were evaluated by using paired t tests. RESULTS AND CONCLUSIONS Electromyographic analysis showed that activity of the masseter and temporalis muscles increased significantly after the expansion appliance was removed during rest, dental clenching, and habitual chewing.
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Affiliation(s)
- Moara De Rossi
- Postgraduate student, Department of Pediatric Dentistry, Piracicaba School of Dentistry, State University of Campinas, São Paulo, Brazil
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Johal A, Gill G, Ferman A, McLaughlin K. The effect of mandibular advancement appliances on awake upper airway and masticatory muscle activity in patients with obstructive sleep apnoea. Clin Physiol Funct Imaging 2007; 27:47-53. [PMID: 17204038 DOI: 10.1111/j.1475-097x.2007.00714.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND There is little understanding of how dental appliances, designed to posture the mandible forwards, act on pharyngeal airway dilatory and masticatory muscles in patients with obstructive sleep apnoea (OSA). This study evaluates, in a prospective cohort design, the effect of mandibular advancement splints (MAS) on awake genioglossus (GG), geniohyoid (GH) and masseter (M) muscle activity. METHODS Fifty OSA patients received a custom-made removable Herbst MAS appliance, adjusted for maximum therapeutic benefit, as judged by subjective improvement. Awake electromyographic (EMG) activity was recorded at baseline and with the MAS in situ, by using bipolar surface electrodes in patients seated upright and in the natural head position. The lower splint was modified to facilitate the placement of the intra-oral bipolar surface electrodes used to record GG EMG activity. RESULTS Significant increases in GG (P = 0.041), GH (P<0.001) and M (P<0.001) muscle activity accompanied placement of the MAS. CONCLUSIONS These findings support the contention of a physiological role, which may act to augment the anatomical action of MAS.
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Affiliation(s)
- Ama Johal
- Oral Growth and Development, Institute of Dentistry, Bart's and The London Queen Mary's School of Medicine and Dentistry, University of London, London, UK.
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