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Farfán NC, Lezcano MF, Navarro-Cáceres PE, Sandoval-Vidal HP, Martinez-Gomis J, Muñoz L, Marinelli F, Fuentes R. Characterization of Mandibular Border Movements and Mastication in Each Skeletal Class Using 3D Electromagnetic Articulography: A Preliminary Study. Diagnostics (Basel) 2023; 13:2405. [PMID: 37510149 PMCID: PMC10378291 DOI: 10.3390/diagnostics13142405] [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: 05/17/2023] [Revised: 07/07/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023] Open
Abstract
Mandibular movement recording is relevant for the planning and evaluation of mandibular function. These movements can include mandibular border movements (MBM) or mastication. Our objective was to characterize the kinematics of MBM and mastication among skeletal classes I, II, and III in the three spatial planes. A descriptive cross-sectional study was conducted with 30 participants. Instructions were provided on how to form Posselt's envelope and to perform masticatory. After data processing, we obtained numerical values for the areas, trajectories, and ranges of MBM that formed Posselt's envelope and the values for speed, masticatory frequency, and the areas of each masticatory cycle. Significant differences were found in the area of Posselt's envelope in the horizontal plane between skeletal classes I and III and in the range of right laterality between skeletal classes II and III. Mastication showed significant differences in the area of the masticatory cycles in the horizontal plane between classes I and III and between classes II and III. In conclusion, there were differences in MBM and mastication between skeletal classes III and I in the horizontal plane. This study supports the need to establish normal values for mandibular kinematics in skeletal class III.
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Affiliation(s)
- Nicole Constanza Farfán
- Research Center for Dental Sciences (CICO), Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
- Department of Integral Adults Dentistry, Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
| | - María Florencia Lezcano
- Cybernetics Laboratory, Department of Bioengineering, Universidad Nacional de Entre Ríos, Entre Ríos CP E3100, Argentina
| | - Pablo Eliseo Navarro-Cáceres
- Research Center for Dental Sciences (CICO), Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
| | - Héctor Paulo Sandoval-Vidal
- Department of Pediatric Dentistry, Orthodontic Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
| | - Jordi Martinez-Gomis
- Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona, 08907 Barcelona, Catalonia, Spain
- Oral Health and Masticatory System Group, (Bellvitge Biomedical Research Institute) IDIBELL, L'Hospitalet de Llobregat, 08907 Barcelona, Catalonia, Spain
| | - Loreto Muñoz
- Carrera de Odontología, Facultad de Odontología, Universidad de La Frontera, Temuco 4811230, Chile
| | - Franco Marinelli
- Research Center for Dental Sciences (CICO), Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
| | - Ramón Fuentes
- Research Center for Dental Sciences (CICO), Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
- Department of Integral Adults Dentistry, Dental School, Faculty of Odontology, Universidad de La Frontera, Temuco 4811230, Chile
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Muftuoglu O, Akturk ES, Eren H, Gorurgoz C, Karasu HA, Orhan K, Akat B, Memikoglu TUT. Long-term evaluation of masseter muscle activity, dimensions, and elasticity after orthognathic surgery in skeletal class III patients. Clin Oral Investig 2023:10.1007/s00784-023-05004-3. [PMID: 37022528 DOI: 10.1007/s00784-023-05004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 03/28/2023] [Indexed: 04/07/2023]
Abstract
OBJECTIVE To evaluate changes in the masseter muscle after orthognathic surgery using electromyography (EMG), ultrasonography (US), and ultrasound elastography (USE) in individuals with skeletal class III anomaly over long-term follow-up and compare with a control group. MATERIALS AND METHODS The study group included 29 patients with class III dentofacial deformities scheduled to undergo orthodontic treatment and orthognathic surgery. The control group included 20 individuals with dental class I occlusion. Assessment of the masseter muscles using EMG, US, and USE was performed before orthognathic surgery (T1) and at postoperative 3 months (T2) and 1 year (T3) in the study group, and at a single time point in the control group. All assessments were performed at rest and during maximum clenching. Masseter muscle activity, dimension, and hardness were analyzed. RESULTS Electromyographic activity of the masseter muscle during maximum clenching was increased at postoperative 1 year but did not reach control group values. On ultrasonography, the masseter muscle showed minimal changes in dimension at postoperative 1 year compared to preoperative values and remained below control group values. The postoperative increase in masseter muscle hardness at rest and during maximum clenching persisted at postoperative 1 year. CONCLUSION The results of this study suggest that after orthognathic surgery, additional interventions and much longer follow-up are needed to ensure better muscle adaptation to the new occlusion and skeletal morphology. CLINICAL RELEVANCE All assessment methods are useful for comprehensively evaluating changes in the masticatory muscles after orthognathic surgery.
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Affiliation(s)
- Ozge Muftuoglu
- Department of Orthodontics, Faculty of Dentistry, Ankara Medipol University, Ankara, Turkey.
| | - Ezgi Sunal Akturk
- Department of Orthodontics, Faculty of Dentistry, Bezmialem Vakif University, İstanbul, Turkey
| | - Hakan Eren
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Cansu Gorurgoz
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Bursa Uludağ University, Bursa, Turkey
| | - Hakan Alpay Karasu
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ankara Medipol University, Ankara, Turkey
| | - Kaan Orhan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Bora Akat
- Department of Prosthodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey
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Masticatory path pattern and masticatory performance while chewing gummy jelly. Odontology 2022:10.1007/s10266-022-00777-7. [PMID: 36562870 DOI: 10.1007/s10266-022-00777-7] [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: 09/23/2022] [Accepted: 12/04/2022] [Indexed: 12/24/2022]
Abstract
The purpose of this study was to clarify masticatory path pattern and masticatory performance during gummy jelly chewing. A total of 235 healthy adults were asked to chew gummy jelly for 20 s on each side, and the masticatory movement was recorded using a Motion Visi-Trainer (MVT V1). Next, the amount of glucose extraction was measured as a parameter of masticatory performance. The masticatory path was classified into one of five patterns newly devised: normal pattern (N, opening: straight or concave, closing: convex) and abnormal patterns (A1-A4). The number of occurrences of each pattern was investigated and compared by sex and path pattern. Next, masticatory performance was compared between the normal pattern and the abnormal patterns by sex. Pattern N was the most frequently expressed in 346 cases out of 470 cases (73.6%), followed by patterns A1, A4, A2, and A3 in that order. Regarding the number of patterns observed, pattern N was the most common in both sexes, followed by pattern A1, with no significant difference between sexes. The amount of glucose extraction in each pattern was the highest in pattern N for both sexes, followed by A2 and others in that order, and a significant difference was observed between the normal pattern and the abnormal patterns. From these results, the existence of sex difference in masticatory path patterns during gummy jelly chewing was not proven, and that masticatory performance was higher with normal patterns than with abnormal patterns.
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Piancino MG, Tortarolo A, Macdonald F, Garagiola U, Nucci L, Brayda-Bruno M. Spinal disorders and mastication: the potential relationship between adolescent idiopathic scoliosis and alterations of the chewing patterns. Orthod Craniofac Res 2022; 26:178-184. [PMID: 35841372 DOI: 10.1111/ocr.12598] [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: 05/27/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE to evaluate mastication in a group of patients with Adolescent Idiopathic Scoliosis (AIS) with a control group, by means of the prevalence of reverse chewing cycles (RCC). MATERIAL AND METHODS this study included a group of patients (N=32; F=24; M=8; mean age ± SD = 14±3 years) with a confirmed diagnosis of Adolescent Idiopathic Scoliosis and a group of control subjects (N=32; F=24; M=8; mean age ± SD = 13±6 years) without spinal disorders. Mastication was recorded with both a hard and a soft bolus, following a standardized protocol, and the prevalence of reverse chewing cycles was compared between the groups. RESULTS The prevalence of reverse chewing cycles was significantly higher in the Adolescent Idiopathic Scoliosis group, with both a soft and a hard bolus, compared to the control group (p<0,001). CONCLUSION the results of this study indicate that the presence of Adolescent Idiopathic Scoliosis influences mastication, i.e. one of the main functions of the stomatognathic system. A multidisciplinary approach to these patients may be relevant in providing the best possible treatment outcomes.
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Affiliation(s)
- Maria Grazia Piancino
- Department of Surgical Sciences, Dental School C.I.R., Division of Orthodontics, University of Turin, Turin, Italy
| | - Alessandro Tortarolo
- Department of Surgical Sciences, Dental School C.I.R., Division of Orthodontics, University of Turin, Turin, Italy
| | | | - Umberto Garagiola
- Department of Biomedical Sciences, University of Milan, Milan, Italy
| | - Ludovica Nucci
- Department of Surgical Sciences and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Marco Brayda-Bruno
- Spine surgery III Scoliosis Department, IRCCS Orthopedic Institute Galeazzi, Milan, Italy
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Use of Transcutaneous Electrical Nerve Stimulation (TENS) for the Recovery of Oral Function after Orthognathic Surgery. J Clin Med 2022; 11:jcm11123268. [PMID: 35743339 PMCID: PMC9225233 DOI: 10.3390/jcm11123268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/07/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023] Open
Abstract
The oral functions of patients are markedly diminished immediately after orthognathic surgery, and novel approaches are needed to accelerate their recovery. The aim of this study was to examine the usefulness of weekly applications of transcutaneous electrical nerve stimulation (TENS) for this purpose, based on the evidence of its effectiveness in other types of patients with muscle alterations. Maximum jaw opening, bite force, pain, and facial inflammation were compared between patients receiving TENS and those receiving sham-TENS for 30 min at baseline and weekly over a four-week period after orthognathic surgery and were also compared between the before and after of each procedure. TENS was applied at 220 Hz, applying the maximum intensity tolerated by each individual patient. The TENS procedure was identical for all patients, but the device was not turned on in the sham-TENS group. Patients were blinded to their group membership. Results were analyzed separately in skeletal class II and III patients. Improvements in jaw opening and inflammation were significantly greater in the TENS than in the sham-TENS group, attributable to the muscle relaxation achieved with the procedure. Research is warranted on the benefits of a more frequent application of TENS.
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Shiga H, Ogura S, Hiraga Y, Takamori H, Namba N, Kobayashi Y. Stability of masticatory movements after placement of implant-supported denture. Odontology 2021; 110:216-222. [PMID: 34363555 DOI: 10.1007/s10266-021-00646-9] [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: 06/04/2021] [Accepted: 07/28/2021] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to clarify the stability of masticatory movement after placement of implant-supported denture. Fourteen patients (patient group) with mandibular implants denture and maxillary complete denture and 30 dentate adults (control group) were asked to chew a boiled fishpaste, and the masticatory movement was recorded using MKG. For the 10 cycles beginning with the 5th cycle of mastication, the parameters representing the stability of masticatory movement were calculated. Data collected at 1, 3, 6, 9 months and 1, 2, 3 years after insertion of implants denture were compared between sessions and also between the patient and control groups. The mean and standard deviation of the values in the patient group at 1 month after insertion of implants denture were large, but gradually decreased 6 to 9 months after insertion of implants denture. Each parameter maintained almost the same value from 1 to 3 years. The parameter values of the patient group were significantly larger than those of control group from 1 to 9 months after insertion of implants denture, but 1 year after insertion of implants denture, there was no significant difference between the two groups in 5 out of 7 parameters. From these results, it was suggested that a certain duration, about 9 months to 1 year, was necessary for patients with implants denture to adapt to the new masticatory function and that the timing of functional evaluation should be set to 1 year after insertion of implants denture.
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Affiliation(s)
- Hiroshi Shiga
- Department of Partial and Complete Denture, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Shin Ogura
- Division of Oral Implant, The Nippon Dental University Hospital at Tokyo, 2-3-16, Fujimi, Chiyoda-ku, Tokyo, 102-8158, Japan
| | - Yasushi Hiraga
- Division of Oral Implant, The Nippon Dental University Hospital at Tokyo, 2-3-16, Fujimi, Chiyoda-ku, Tokyo, 102-8158, Japan
| | - Hitoshi Takamori
- Division of Oral Implant, The Nippon Dental University Hospital at Tokyo, 2-3-16, Fujimi, Chiyoda-ku, Tokyo, 102-8158, Japan
| | - Nerihisa Namba
- Department of Partial and Complete Denture, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan
| | - Yoshinori Kobayashi
- Department of Partial and Complete Denture, The Nippon Dental University School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan
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Kawai N, Shibata M, Watanabe M, Horiuchi S, Fushima K, Tanaka E. Effects of functional training after orthognathic surgery on masticatory function in patients with mandibular prognathism. J Dent Sci 2020; 15:419-425. [PMID: 33505611 PMCID: PMC7816020 DOI: 10.1016/j.jds.2020.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/21/2020] [Indexed: 11/21/2022] Open
Abstract
Background/purpose Even after surgical orthodontic treatment, the level of masticatory function in patients with jaw deformities is still lower than that of healthy subjects. The purpose of this study was to evaluate the effects of functional training program using gum chewing exercise after orthognathic surgery on masticatory function in patients with mandibular prognathism. Materials and methods The study subjects were 16 patients with mandibular prognathism who underwent orthognathic surgery and 8 individuals with normal occlusion. Patients were divided into two groups (training group and non-training group; n = 8 per group). Functional training included gum chewing exercise and patient-education about masticatory function. The training; gum chewing exercise of 5 min twice a day for 90 days, started at 3 months after surgery. For each subject, electromyographic activities of masseter and temporalis muscles during maximum voluntary clenching (MVC) and jaw movement during gum chewing were recorded before and after surgical orthodontic treatment. Two parameters; activity index (AI: ratio of activity of masseter and temporalis muscles) and error index (EI: ratio of the number of abnormal chewing patterns), were used. Results In the training group, the AI value during MVC increased significantly and the EI value during gam chewing decreased significantly after surgical orthodontic treatment (AI: p < 0.01; EI: p < 0.01), indicating the improvement of activity balance of masseter and temporalis muscles and conversion of the jaw movement from abnormal to normal pattern (p < 0.01). Conclusion Our findings suggested that functional training using the gum chewing and patient-education exercise improved masticatory function in patients with mandibular prognathism.
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Affiliation(s)
- Nobuhiko Kawai
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan.,Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Manami Shibata
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Masahiko Watanabe
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Shinya Horiuchi
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kenji Fushima
- Division of Orthodontics, Department of Highly Advanced Stomatology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan
| | - Eiji Tanaka
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Dalessandri D, Tonni I, Laffranchi L, Migliorati M, Isola G, Bonetti S, Visconti L, Paganelli C. Evaluation of a Digital Protocol for Pre-Surgical Orthopedic Treatment of Cleft Lip and Palate in Newborn Patients: A Pilot Study. Dent J (Basel) 2019; 7:E111. [PMID: 31835442 PMCID: PMC6960660 DOI: 10.3390/dj7040111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 11/25/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
The aim of this study was to evaluate the accuracy, invasiveness and impact on clinical results of a digital oral impression protocol in the pre-surgical orthopedic treatment (PSOT) of newborn cleft lip and palate (CLP) patients undergoing primary alveolar surgical repair. Six patients were divided, according to impression technique used, into a digital (intraoral scanner (IOS)) and a non-digital (tray and putty (T&P)) group. Parents considered IOS impressions to be less invasive, compared to T&P impressions. The clinician that took all the impressions considered the IOS to be less stressful compared to the T&P method. In two T&P patients, the impression was repeated because some important anatomical details were missing, in one case due to patient regurgitation during the first attempt. No impression was repeated, and any adverse event was reported in the IOS group. There were no significant differences between these two protocols in pre-surgical alveolar gap reduction and surgical challenge. The study results indicate that this digital protocol can accelerate the production process of the passive molding plate with an instantaneous transmission of the digital impression to the dental lab, maintaining the same accuracy level and clinical outcomes of classical techniques and reducing the invasiveness of impression taking, avoiding any risk of impression material ingestion or inhalation.
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Affiliation(s)
- Domenico Dalessandri
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
| | - Ingrid Tonni
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
| | - Laura Laffranchi
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
| | - Marco Migliorati
- Department of Orthodontics, School of Dentistry, University of Genova, Largo Rossana Benzi 10, 16132 Genova, Italy;
| | - Gaetano Isola
- School of Dentistry, Department of General Surgery and Medical and Surgical Specialties, University of Catania, Via S. Sofia 78, 95123 Catania, Italy;
| | - Stefano Bonetti
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
| | - Luca Visconti
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
| | - Corrado Paganelli
- School of Dentistry, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (I.T.); (L.L.); (S.B.); (L.V.); (C.P.)
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Kuramochi A, Shiga H. Effect of denture treatment on masticatory movement in patients with complete dentures. J Prosthodont Res 2019; 63:245-249. [DOI: 10.1016/j.jpor.2018.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 10/27/2022]
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Prado DGDA, Berretin-Felix G, Migliorucci RR, Bueno MDRS, Rosa RR, Polizel M, Teixeira IF, Gavião MBD. Effects of orofacial myofunctional therapy on masticatory function in individuals submitted to orthognathic surgery: a randomized trial. J Appl Oral Sci 2018; 26:e20170164. [PMID: 29412368 PMCID: PMC5777416 DOI: 10.1590/1678-7757-2017-0164] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 04/20/2017] [Indexed: 11/30/2022] Open
Abstract
Objectives The esthetic and functional results of orthognathic surgery of severe dentofacial deformities are predictable, however there are differences regarding the effects on stomatognathic system. The aim was to investigate the effects of orofacial myofunctional therapy (OMT) on the masticatory function in individuals with dentofacial deformity submitted to orthognathic surgery (OGS). Material and Methods Forty-eight individuals (18-40 years) were evaluated, 14 undergoing OMT (treated group-TG), 10 without this treatment (untreated group-UTG) and 24 in a control group with normal occlusion; for clinical aspects the data of an individual was missed (n=46). Chewing was performed using the Expanded protocol of orofacial myofunctional evaluation with scores (OMES-E). Muscle tone and mobility were also analyzed before (P0), three (P1) and six months (P2) after OGS. Surface electromyography of the masseter and temporalis muscles was performed, considering the parameters amplitude and duration of act and cycle, and the number of masticatory cycles. The OMT consisted of ten therapeutic sessions along the postoperative period. The results were compared using parametric and non-parametric tests. Results TG showed higher scores in P1 and P2 than P0; for the masticatory type the scores in P2 were significantly higher than P0. In addition, the proportion of individuals with adequate tone of lower lip and adequate tongue mobility for TG increased significantly from P1 and P2 in relation to P0. The EMG results showed a decrease in act and cycle duration in P2 in relation to P0 and P1 for the TG; furthermore the values were close to controls. An increase in the number of cycles from P0 to P2 was also observed, indicating faster chewing, which may be attributed to an improvement of balanced occlusion associated with OMT. Conclusion There were positive effects of OMT on the clinical and electromyography aspects of chewing in individual submitted to orthognathic surgery.
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Affiliation(s)
- Daniela Galvão de Almeida Prado
- Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Departamento de Ciências Fisiológicas, Piracicaba, SP, Brasil
| | - Giédre Berretin-Felix
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Fonoaudiologia, Bauru, SP, Brasil
| | | | | | - Raquel Rodrigues Rosa
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Fonoaudiologia, Bauru, SP, Brasil
| | | | - Isadora Ferraz Teixeira
- Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Piracicaba, SP, Brasil
| | - Maria Beatriz Duarte Gavião
- Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Departamento de Odontologia Infantil, Piracicaba, SP, Brasil
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Celakil D, Ozdemir F, Eraydin F, Celakil T. Effect of orthognathic surgery on masticatory performance and muscle activity in skeletal Class III patients. Cranio 2017; 36:174-180. [DOI: 10.1080/08869634.2017.1311395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Deniz Celakil
- Faculty of Dentistry, Department of Orthodontics, Yeditepe University, Istanbul, Turkey
| | - Fulya Ozdemir
- Faculty of Dentistry, Department of Orthodontics, Yeditepe University, Istanbul, Turkey
| | - Feyza Eraydin
- Faculty of Dentistry, Department of Orthodontics, Yeditepe University, Istanbul, Turkey
| | - Tamer Celakil
- Faculty of Dentistry, Department of Prosthodontics, Istanbul University, Istanbul, Turkey
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Piancino MG, Falla D, Merlo A, Vallelonga T, de Biase C, Dalessandri D, Debernardi C. Effects of therapy on masseter activity and chewing kinematics in patients with unilateral posterior crossbite. Arch Oral Biol 2016; 67:61-7. [DOI: 10.1016/j.archoralbio.2016.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 11/09/2015] [Accepted: 03/22/2016] [Indexed: 12/12/2022]
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Kubota T, Yagi T, Tomonari H, Ikemori T, Miyawaki S. Influence of surgical orthodontic treatment on masticatory function in skeletal Class III patients. J Oral Rehabil 2015; 42:733-41. [PMID: 25975774 DOI: 10.1111/joor.12307] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2015] [Indexed: 11/29/2022]
Abstract
Skeletal Class III patients exhibit malocclusion characterised by Angle Class III and anterior crossbite, and their occlusion shows total or partially lateral crossbite of the posterior teeth. Most patients exhibit lower bite force and muscle activity than non-affected subjects. While orthognathic surgery may help improve masticatory function in these patients, its effects have not been fully elucidated. The aims of the study were to evaluate jaw movement and the electromyographic (EMG) activity of masticatory muscles before and after orthognathic treatment in skeletal Class III patients in comparison with control subjects with normal occlusion. Jaw movement variables and EMG data were recorded in 14 female patients with skeletal Class III malocclusion and 15 female controls with good occlusion. Significant changes in jaw movement, from a chopping to a grinding pattern, were observed after orthognathic treatment (closing angle P < 0.01; cycle width P < 0.01), rendering jaw movement in the patient group similar to that of the control group. However, the grinding pattern in the patient group was not as broad as that of controls. The activity indexes, indicating the relative contributions of the masseter and temporalis muscles (where a negative value corresponds to relatively more temporalis activity and vice versa) changed from negative to positive after treatment (P < 0.05), becoming similar to those of control subjects. Our findings suggest that orthognathic treatment in skeletal Class III patients improves the masticatory chewing pattern and muscle activity. However, the chewing pattern remains incomplete compared with controls.
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Affiliation(s)
- T Kubota
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Yagi
- Department of Orthodontics Dentistry, Medical and Dental Hospital, Kagoshima University, Kagoshima, Japan
| | - H Tomonari
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Ikemori
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - S Miyawaki
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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14
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Relationship between masticatory performance using a gummy jelly and food intake ability in Japanese complete denture wearers. Odontology 2014; 103:356-9. [DOI: 10.1007/s10266-014-0170-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 07/11/2014] [Indexed: 10/24/2022]
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15
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Al-Rayes NZ, Hajeer MY. Evaluation of occlusal contacts among different groups of malocclusion using 3D digital models. J Contemp Dent Pract 2014; 15:46-55. [PMID: 24939264 DOI: 10.5005/jp-journals-10024-1486] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES (1) To evaluate the applicability of using 3D digital models in the assessment of the magnitude of occlusal contacts by measuring occlusal contact surface areas (OCSAs) and 3D mesh points in 'contact' (OCMPs) in a sample of orthodontic patients; (2) To detect any sex differences in the magnitude of occlusal contacts in all malocclusion groups; (3) To detect inter- group differences; (4) To assess possible correlations between occlusal contacts and other dental characteristics. MATERIALS AND METHODS Study casts of 120 malocclusion patients were selected and divided into 4 groups (class I division 1, class II division 1, class II division 2, class III) with equal numbers for both sexes. 3D digital models were produced using O3DM™ technology. Occlusal contacts were quantified using two methods of measuring. RESULTS (1) No significant sexual differences were detected for OCMPs (mesh points) and OCSAs (mm(2)) in all groups. (2) There were statistically significant differences among malocclusion groups for OCMPs and OCSAs (p < 0.001). Tukey's HSD post- hoc tests showed that class III patients had significantly less occlusal contacts than other malocclusion groups. (3) Stepwise multiple regression equations showed that overjet, lower arch width and overbite could explain approximately 19.5% of the total variance of OCSAs and OCMPs. CONCLUSION Sexual differences in occlusal contacts were not detected. Class I division 1 patients had the highest amount of occlusal contacts among all groups of malocclusion. Overjet, overbite and lower dental arch width were best predictors of occlusal contacts in the current sample.
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Affiliation(s)
- Naim Z Al-Rayes
- Specialist and Clinical Lecturer, Department of Orthodontics, University of Al-Baath Dental School, Syrian Arab Republic
| | - Mohammad Y Hajeer
- Associate Professor, Department of Orthodontics, University of Damascus Dental School, Damascus, Syrian Arab Republic
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