scholarly journals Surface Electromyography (sEMG) Activity of Masticatory Muscle (Masseter and Temporalis) with Three Different Types of Orthodontic Bracket

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Shamima E. Nishi ◽  
Norma Ab Rahman ◽  
Rehana Basri ◽  
Mohammad K. Alam ◽  
Nor Farid M. Noor ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Repeated Measures ◽  
Orthodontic Treatment ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Orthodontic Bracket ◽  
Significant Difference ◽  
Fixed Appliances ◽  
Ceramic Bracket ◽  
Semg Activity

Objective. This pre-post study is aimed at determining the effects of masticatory muscle activity (masseter and temporalis) measured via sEMG between conventional, self-ligating, and ceramic bracket after six months of orthodontic treatment. Methods. A total of eighteen (18) malocclusion patients were identified. Malocclusion patients were subdivided into 3 groups based on the bracket selection (conventional, self-ligating, and ceramic bracket) with 6 patients for each group. sEMG of muscles were done using a two-channel electromyography device, where pregelled and self-adhesive electrodes (bilateral) were applied. Chewing and clenching of masseter and temporalis muscle activity were recorded for 20 s pre and 6 months of orthodontic treatment using sEMG (frequency 60 Hz). The data were analysed by using repeated measures ANOVA in IBM SPSS Statistics Version 24.0. Results. Chewing and clenching for masseter muscle showed no significant difference ( P > 0.05 ) in sEMG activity of three types of the brackets. However, for temporalis muscle, there was a significant difference found in sEMG activity during chewing ( P < 0.05 ) and clenching ( P < 0.05 ) between these three brackets. Conclusion. The activity of temporalis muscle showed significant changes in chewing and clenching, where the conventional group demonstrated better muscle activity pre and at six months of fixed appliances.

scholarly journals Evaluation of the release of nickel and titanium under orthodontic treatment

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Rafael Velasco-Ibáñez ◽  
Edith Lara-Carrillo ◽  
Raúl Alberto Morales-Luckie ◽  
Elizabeth Teresita Romero-Guzmán ◽  
Víctor Hugo Toral-Rizo ◽  
...  
Keyword(s):  
Metal Ions ◽  
Repeated Measures ◽  
Inductively Coupled Plasma ◽  
Orthodontic Treatment ◽  
Optical Emission ◽  
Inductively Coupled ◽  
Anova Model ◽  
Significant Difference ◽  
Salivary Ph ◽  
Fixed Appliances

AbstractThe metal alloys used in dentistry are made mainly of nickel (Ni), titanium (Ti), and other elements such as molybdenum (Mo), zirconium (Zr), iron (Fe), tin (Sn), chrome (Cr), carbon (C), copper (Cu) and niobium (Nb) which can release metal ions in unstable environments. The aim of this work was determine the salivary pH before and during orthodontic treatment; evaluate the release of metal ions, mainly Ni and Ti, in urine and saliva using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES); and evaluate the corrosion using Scanning Electronic Microscopy (SEM). In this study, we selected 35 individuals under orthodontic treatment, from whom saliva and urine samples were collected in 3 stages: (a) basal, (b) at 3 and (c) 6 months after the placement of the fixed appliances. SEM analyzed the Ni–Ti (0.016″) and stainless steel (SS) (0.016 × 0.022″) archs after 1 month of being in contact with the oral cavity. Statistical analysis was performed with Stata using the ANOVA model of repeated measures with a p < 0.05. A statistically significant difference in the concentration of Ni in saliva were found between 3 and 6 months of intervention and Ti in urine was found 3 and 6 months.

scholarly journals Pain Experience with Micro-osteoperforations during Initial Orthodontic Alignment: A Randomized Clinical Trial.

2020 ◽  
Vol 9 (4) ◽  
pp. 309-318
Author(s):  
Azaitun Akma Shahrin ◽  
◽  
Sarah Haniza Abdul Ghani ◽  
Noraina Hafizan Norman ◽  
◽  
...  
Keyword(s):  
Clinical Trial ◽  
Repeated Measures ◽  
Pain Perception ◽  
Tooth Movement ◽  
Intervention Group ◽  
Orthodontic Tooth Movement ◽  
Control Group ◽  
Initial Alignment ◽  
Significant Difference ◽  
Fixed Appliances

Objetive: The objective of this clinical trial was to investigate the perception of pain during initial maxillary alignment with an adjunctive procedure of micro-osteoperforations (MOPs) compared to conventional orthodontics. Material and methods: This study design was a single-centre, two-arm parallel prospective randomised clinical trial. Thirty consecutive adult subjects (25 females and 5 males; mean age ± SD, 22.66 ± 3.27 years) with 5-8mm moderate upper labial segment crowding were randomly allocated using block randomisation into intervention and control group. All subjects had first premolar extractions, bonded conventional fixed appliances and 0.014-inch nickel-titanium archwire was placed for initial alignment. The intervention group received a 3-mm deep MOPs procedure under local anaesthesia using a Propel device (PROPEL Ortho Singapore) on the labiogingival aspect between the maxillary incisors. Both groups received a set of 100 mm visual analogue scale to complete over the first week, recording pain at 24 hours, 3 days and 1 week. Data were analysed using repeated-measures analysis of variance (ANOVA). Results: There was a statistically significant difference observed in perceived pain levels between MOPs and the control group on day 1, day 3 and day 7 postoperatively. Pain perception was significantly lower in the intervention group at all time points. Conclusion: Accelerating orthodontic tooth movement with MOPs did not accentuate pain perceived during initial maxillary alignment with fixed appliances.

scholarly journals A comparison of treatment results of adult deep-bite cases treated with lingual and labial fixed appliances

2021 ◽  
Author(s):  
Hande Pamukçu ◽  
Ömür Polat Özsoy
Keyword(s):  
Orthodontic Treatment ◽  
Inclusion Criteria ◽  
Treatment Results ◽  
Lower Incisor ◽  
Deep Bite ◽  
Mandibular Plane ◽  
Number Of Patients ◽  
Significant Difference ◽  
Fixed Appliances ◽  
Lower Incisors

ABSTRACT Objectives To compare the cephalometric treatment results of adult deep-bite cases after labial and lingual fixed orthodontic treatment. Materials and Methods A total of 102 patients underwent lingual orthodontic treatment and complete records were evaluated. The following inclusion criteria were used: patients who had Angle Class I or mild Class II malocclusion; comprehensive orthodontic treatment that did not include intrusion mechanics or any extractions; patients with an initial overbite of more than 3.7 mm. Thirteen patients met the inclusion criteria. These cases were matched with the same number of patients according to age with a labial orthodontic treatment group. Pre- and post-treatment cephalometric radiographs were evaluated. Independent t test or Fisher exact tests were performed to assess the differences between the groups. Results Proclination of the upper incisors was higher in the labial group. Incisor mandibular plane angle (IMPA) showed an increase of 1.2° in the lingual group and 9.7° in the labial group. Lower incisor edge was approximately in a stable sagittal position in the lingual group but significant lower incisor proclination was seen in the labial group. The lower incisors were intruded (-1 mm) in the lingual group but lower incisors were minimally extruded (0.3 mm) in the labial group. No significant difference was found in the movements of upper and lower molars for both groups. Conclusions The nature of lower incisor movement involved less protrusion in lingual orthodontics than the labial treatment. Lingual orthodontic treatment is a better option in adult cases where intrusion of lower incisors without labial tipping is desired.

scholarly journals In vivo effect of antibacterial and fluoride-releasing adhesives on enamel demineralization around brackets: A micro-CT study

2017 ◽  
Vol 87 (6) ◽  
pp. 841-846 ◽  
Author(s):  
Aslihan Zeynep Oz ◽  
Abdullah Alper Oz ◽  
Sabahat Yazıcıoglu
Keyword(s):  
Orthodontic Treatment ◽  
In Vivo Study ◽  
White Spot Lesion ◽  
Micro Ct ◽  
Preventive Effect ◽  
Orthodontic Bracket ◽  
Enamel Demineralization ◽  
Significant Difference ◽  
Preventive Effects

ABSTRACT Objectives: The aim of this in vivo study was to investigate the preventive effect of two different adhesives on enamel demineralization and compare these adhesives with a conventional one. Materials and Methods: Fifteen patients requiring the extraction of their first four premolars for orthodontic treatment were included in the study. One premolar was randomly selected, and an antibacterial monomer-containing and fluoride-releasing adhesive (Clearfil Protect Bond, Kuraray Medical, Okayama, Japan) was used for orthodontic bracket bonding. Another premolar was randomly selected, and a fluoride-releasing and recharging orthodontic adhesive (Opal Seal, Ultradent Products, South Jordan, Utah) was used. One premolar was assigned as a control, and a conventional adhesive (Transbond XT, 3M Unitek, Monrovia, Calif) was used. The teeth were extracted after 8 weeks, and the demineralization areas of the 45 extracted teeth were analyzed using microcomputed tomography with software. Results: There was no significant difference between the white spot lesion (WSL) rates of the adhesives (P &gt; .05). The volumes of the WSLs varied from 0 to 0.019349 mm3. Although Opal Seal showed the smallest lesion volumes, there was no significant difference in volumetric measurements of the lesions among the groups (P &gt; .05). Conclusions: The findings indicated no significant differences between the preventive effects of the adhesives used in this in vivo study over 8 weeks.

scholarly journals Assessment of Masticatory Muscle Function in Patients with Bilateral Complete Cleft Lip and Palate and Posterior Crossbite by means of Electromyography

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Agata Budzyńska ◽  
Mariusz Lipski ◽  
Sławomir Kulesza ◽  
Krzysztof Woźniak
Keyword(s):  
Muscle Activity ◽  
Muscle Function ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Emg Activity ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Posterior Crossbite ◽  
Electrical Potentials ◽  
Masseter Muscles

Aim. The aim of this study was to evaluate the electrical activity of the masticatory muscles in children with a bilateral complete cleft lip and palate (BCCLP) and posterior crossbite as well as in noncleft subjects with no malocclusion. Another purpose of the study was to examine the possible factors associated with this muscle activity. Methods. The study included 52 children with mixed dentition and Class I occlusions (20 patients with nonsyndromic BCCLP and 32 subjects with no clefts). All the cleft patients had posterior crossbite. The surface electromyography (sEMG) was used to identify the electrical potentials of the temporalis and masseter muscles. The electromyographical (EMG) recordings were taken with a DAB-Bluetooth Instrument (zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC). The relationships between muscle EMG activity and independent variables were identified through multivariate logistic regression analysis. Results. The EMG activity of the temporalis muscles at rest was significantly higher in BCCLP patients with malocclusion in comparison with the noncleft subjects with normal occlusion. During MVC, significantly lower electrical potentials of the temporalis and masseter muscles were observed in cleft patients compared to the noncleft group. The presence of BCCLP, unilateral posterior crossbites, increased vertical overlap, and increased overjet are factors strongly associated with higher temporalis muscle EMG activity at rest. Conclusion. The use of surface electromyography in imaging muscle function showed that children with BCCLP and posterior crossbite exhibited altered masticatory muscle potentials at rest and during clenching. The presence of unilateral posterior crossbites, increased vertical overlap, and increased overjet had a significant impact on temporalis muscle activity in cleft patients. This knowledge is important in the aspect of early and proper diagnosis and orthodontic treatment of malocclusions, thereby achieving correct occlusion and improvement in muscle function.

Comparison of Hip- and Back-Muscle Activity and Pelvic Compensation in Healthy Subjects During 3 Different Prone Table Hip-Extension Exercises

2017 ◽  
Vol 26 (4) ◽  
pp. 216-222 ◽  
Author(s):  
In-cheol Jeon ◽  
Oh-yun Kwon ◽  
Jong-hyuck Weon ◽  
Ui-jae Hwang ◽  
Sung-hoon Jung
Keyword(s):  
Outcome Measures ◽  
Muscle Activity ◽  
Repeated Measures ◽  
Motion Tracking ◽  
Gluteus Maximus ◽  
Biceps Femoris ◽  
Erector Spinae ◽  
Repeated Measure ◽  
Significant Difference ◽  
Hip Extension

Context:Prone hip extension has been recommended for strengthening the back and hip muscles. Previous studies have investigated prone hip extension conducted with subjects on the floor in the prone position. However, no study has compared 3 different table hip-extension (THE) positions in terms of the activities of the back- and hip-joint muscles with lumbopelvic motion.Objective:To identify more effective exercises for strengthening the gluteus maximus (GM) by comparing 3 different exercises (THE alone, THE with the abdominal drawing-in maneuver [THEA], and THEA with chair support under the knee [THEAC]) based on electromyographic muscle activity and pelvic compensation.Design:Repeated-measure within-subject intervention.Setting:University research laboratory.Participants:16 healthy men.Main Outcome Measures:Surface electromyography (EMG) was used to obtain data on the GM, erector spinae (ES), multifidus, biceps femoris (BF), and semitendinosus (ST). Pelvic compensation was monitored using an electromagnetic motion-tracking device. Exertion during each exercise was recorded. Any significant difference in electromyographic muscle activity and pelvic motion among the 3 conditions (THE vs THEA vs THEAC) was assessed using a 1-way repeated-measures analysis of variance (ANOVA) with Bonferroni post hoc test.Results:The muscle activities recorded by EMG differed significantly among the 3 exercises (P < .01). GM activity was increased significantly during THEAC (P < .01). There was a significant difference in lumbopelvic kinematics in terms of anterior tilting (F = 19.49, P < .01) and rotation (F= 27.38, P < .01) among the 3 exercises.Conclusions:The THEAC exercise was the most effective for strengthening the GM without overactivity of the ES, BF, and ST muscles and lumbopelvic compensation compared with THE and THEA.

scholarly journals Serum amyloid A and muscle activity biomarkers in horses submitted to equestrian show jumping

2019 ◽  
Vol 39 (8) ◽  
pp. 668-671 ◽  
Author(s):  
Wilson P. Carvalho Filho ◽  
Leandro A. Fonseca ◽  
Fabricia M. Girardi ◽  
Lucas D. Bento ◽  
Pollyanna C. Souto ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Repeated Measures ◽  
Serum Amyloid A ◽  
Serum Amyloid ◽  
Amyloid A ◽  
Significant Difference ◽  
Aspartate Amino Transferase ◽  
Jumping Exercise ◽  
Level Of Significance ◽  
Show Jumping

ABSTRACT: The aim of this study was to evaluate the serum amyloid A (SAA) and biomarkers of muscle activity of horses submitted to show jumping activity. To do this, the variables SAA, glucose, lactate and the biomarkers creatine kinase (CK) and aspartate amino transferase (AST) were evaluated in 10 horses submitted to the show jumping exercise in a tournament for beginners. The evaluations occurred before exercise (T0), immediately after (T1), 30 minutes (T2), 60 minutes (T3) and 24 hours after the end (T4). Data were evaluated using analysis of variance for repeated measures. The statistical software SAEG 9.1 was used to verify the level of significance between the moments for P<0.05. Glucose presented a difference between the moments T0 (97.7±13.3mg/dL) and T1 (79.7±14.1mg/dL). Lactate presented elevation in T1 (15.3±6.1mmol/L) compared to the others T0 (3.8±0.8mmol/L), T2 (6.5±3.9mmol/L), T3 (5.3±2.2mmol/L) and T4 (5.1±1.6mmol/L). The CK showed a significant difference between T0 (82.8±51.2U/L) and T1 (140.1±58.5U/L) and between T4 (74.4±43.1U/L) with T1 (140.1±58.5U/L). The AST presented no difference between moments. The show jumping activity with one-meter obstacles did not induce changes in the SAA protein between the moments.

scholarly journals Immediate Effect of Occlusal Errors on Masticatory Muscle Activity in Denture Wearers: A Pilot Study

2012 ◽  
Vol 1 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Russell Wicks ◽  
David Cagna ◽  
Robert Brandt
Keyword(s):  
Pilot Study ◽  
Muscle Activity ◽  
Scientific Progress ◽  
Emg Activity ◽  
Masticatory Muscle ◽  
Complete Dentures ◽  
Equal Distribution ◽  
Significant Difference ◽  
Occlusal Interferences ◽  
Masticatory Muscle Activity

ABSTRACT Over the past three decades, little scientific progress has been made relative to occlusion in conventional complete dentures. Equal distribution of functional load throughout the residual denture foundation is likely an important factor in prosthesis stability and patient acceptance of dentures. A better understanding the relationship between denture occlusion and the physiologic behavior of muscles involved in mastication may prove beneficial in the clinical management of edentulism. The purpose of the present study was to determine the short-term immediate effects of unilateral and bilateral posterior occlusal interferences on masticatory muscle activity in edentulous patients treated with conventional complete dentures. Bilateral EMG activity of the anterior temporalis and masseter muscles was recorded in ten subjects at baseline, following introduction of unilateral posterior occlusal interferences, and following introduction of bilateral posterior interferences. During each experimental event, muscle activity was recorded bilaterally at maximal clench and the intended denture occlusion was electronically verified. Patients responded to questionnaires after each experimental intervention and following removal of occlusal interferences. Student's paired t-test was used to compare the data obtained (p = 0.05). Results indicate no significant difference in EMG values at baseline, after introduction of bilateral posterior interferences, after the introduction of unilateral right posterior interferences and after removal of the occlusal interference. In the group with unilateral left posterior occlusal interferences there was a significant reduction in the EMG activity of the left masseter. Analysis of questionnaires did not reveal any significant findings. Taken together, results suggest that there was no significant difference in the EMG values of the patient after the introduction of the posterior interferences. How to cite this article Ahuja S, Wicks R, Cagna D, Brandt R, Scarbecz M. Immediate Effect of Occlusal Errors on Masticatory Muscle Activity in Denture Wearers: A Pilot Study. Int J Exper Dent Sci, 2012;1(1):1-7.

Comparison of Trunk Muscle Activity During Modified Side-Bridge Exercises and Traditional Side Bridge Exercise

2020 ◽  
Vol 29 (7) ◽  
pp. 963-969 ◽  
Author(s):  
Chi-Whan Choi ◽  
Jung-Wan Koo ◽  
Yeon-Gyu Jeong
Keyword(s):  
Analysis Of Variance ◽  
Muscle Activity ◽  
Repeated Measures ◽  
Statistical Significance ◽  
Compressive Load ◽  
University Hospital ◽  
Healthy Men ◽  
Bonferroni Adjustment ◽  
Repeated Measures Analysis ◽  
Significant Difference

Context: The modified side-bridge exercise is designed for some special situations in which it is impossible to tolerate the compressive load on the side supported during the side bridge, such as in the older people with a hip or knee replacement and even in athletes with shoulder pain. Objectives: To examine the effects of 3 modified side-bridge exercises on the spinal stability muscles compared with traditional side-bridge (TSB) exercises for healthy men. Design: The effects of different exercises on the muscle activities of the external oblique (EO), internal oblique (IO), and quadratus lumborum (QL) during TSB exercise, both legs lift on side lying (BLLS), torso lift on a 45° bench while side lying (TLBS), and wall side bridge (WSB) were analyzed with the 1-way repeated-measures analysis of variance. Setting: This study was conducted in a university hospital laboratory. Participants: A total of 20 healthy men were recruited for this study. Interventions: The participants performed TSB, BLLS, TLBS, and WSB in a random order. Main Outcome Measures: Surface electromyography measured the muscle activity of the EO, IO, and QL. A 1-way repeated-measures analysis of variance assessed the statistical significance of the EO, IO, and QL muscle activity. When there was a significant difference, a Bonferroni adjustment was performed. Results: BLLS and TLBS showed similar effects to TSB in the EO, IO, and QL muscle activity, whereas WSB showed significantly less QL muscle activity than TSB (P < .05). Moreover, TLBS was significantly greater in the muscle activity of QL and EO than WSB (P < .05). Conclusion: BLLS and TLBS may be effective rehabilitation techniques to activate EO, IO, and QL in patients who are unable to perform TSB as spine stability exercises.

Analysis of Muscle Activity on Sedentary Group Spinal Muscle in Different Sitting Postures

2020 ◽  
Vol 10 (5) ◽  
pp. 1178-1183
Author(s):  
Yong Feng ◽  
XianJian Chen
Keyword(s):  
Sedentary Behavior ◽  
Muscle Activity ◽  
Repeated Measures ◽  
Sitting Position ◽  
Sitting Posture ◽  
Time Points ◽  
Sedentary Group ◽  
Significant Difference ◽  
Splenius Capitis ◽  
The Relationship

The prevention of sedentary behavior and discussing the relationship between sedentary behavior and health are very significant. In this study, sEMG was used to detect the changes of spinal muscle activity in three positions: sitting, and standing. It was aimed to find out the sEMG characteristics of splenius capitis (SCA), trapezius (TR), erector spine muscle (ESM) and spinalis (SP) under the sedentary, sitting-moving and sittingstanding posture. Through the two-factor repeated measures analyses of variance, the results revealed that there were a significant difference in MPF and MF between SCA, ESM, TR and SP at different time points. The results showed that the MFslope and MPFslope of ESM, SP, TR, and SCA were smaller in the sitting position than in the sitting position. The MFslope and MPFslope of both SP and SCA were larger than that in the sedentary posture. These results confirm that sitting posture can alleviate spinal muscle fatigue compared to sedentary posture, while sitting posture can alleviate ESM and TR fatigue. The sitting-moving posture can’t improve the fatigue of SCA and SP which caused by sedentary posture.

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