Effects of Intense Chewing Exercises on the Masticatory Sensory-Motor System

2009 ◽  
Vol 88 (7) ◽  
pp. 658-662 ◽  
Author(s):  
M. Koutris ◽  
F. Lobbezoo ◽  
M. Naeije ◽  
K. Wang ◽  
P. Svensson ◽  
...  
Keyword(s):  
Masseter Muscle ◽  
Stretch Reflex ◽  
Myofascial Pain ◽  
Masticatory Muscles ◽  
Reflex Amplitude ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pain Scores ◽  
Pressure Pain Thresholds ◽  
Exercise Muscle

Nociceptive substances, injected into the masseter muscle, induce pain and facilitate the jaw-stretch reflex. It is hypothesized that intense chewing would provoke similar effects. Fourteen men performed 20 bouts of 5-minute chewing. After each bout, 20 min and 24 hrs after the exercise, muscle fatigue and pain scores and the normalized reflex amplitude from the left masseter muscle were recorded. Before, 20 min, and 24 hrs after the exercise, signs of temporomandibular disorders and pressure-pain thresholds of the masticatory muscles were also recorded. Fatigue and pain scores had increased during the exercise (P < 0.001), but the reflex amplitude did not (P = 0.123). Twenty minutes after the exercises, 12 participants showed signs of myofascial pain or arthralgia. Pressure-pain thresholds were decreased after 20 min (P = 0.009) and 24 hrs (P = 0.049). Intense chewing can induce fatigue, pain, and decreased pressure-pain thresholds in the masticatory muscles, without concomitant changes in the jaw-stretch reflex amplitude.

Stretch Reflex and Pressure Pain Thresholds in Chronic Tension-Type Headache Patients and Healthy Controls

Cephalalgia ◽  
2009 ◽  
Vol 29 (5) ◽  
pp. 556-565 ◽  
Author(s):  
A Peddireddy ◽  
K Wang ◽  
P Svensson ◽  
L Arendt-Nielsen
Keyword(s):  
Stretch Reflex ◽  
Tension Type Headache ◽  
Healthy Controls ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Chronic Tension Type Headache ◽  
Control Subjects ◽  
Pressure Pain Thresholds ◽  
Type Headache ◽  
Masseter Muscles

To compare the jaw-stretch reflex and pressure pain thresholds (PPT) in chronic tension-type headache (CTTH) patients and healthy controls, 30 patients (15 male and 15 female) and 30 age- and sex-matched healthy subjects were investigated. Stretch reflexes were recorded in the temporalis and masseter muscles and PPT was determined in the anterior temporalis, splenius capitis and masseter muscles. The results showed that the amplitude of the stretch reflex in CTTH patients was higher compared with control subjects ( P < 0.045), and higher in women compared with men in the right and left anterior temporalis muscles ( P < 0.009). There were no differences in the PPT value between CTTH and control subjects ( P > 0.509), whereas women showed significantly lower PPT measurements ( P < 0.046). The results demonstrated a facilitation of the stretch reflex pathways in CTTH patients that is unrelated to measures of pericranial sensitivity.

scholarly journals Relationship on the Pressure Pain Thresholds between the Masticatory Muscles and the Styloid Process Part 1. In Normal Subjects.

1998 ◽  
Vol 42 (3) ◽  
pp. 438-444 ◽  
Author(s):  
Kazuko Ishiura ◽  
Koichi Kimura ◽  
Makoto Matsushima ◽  
Che-cheng Chiang ◽  
Masahiro Tanaka ◽  
...  
Keyword(s):  
Normal Subjects ◽  
Styloid Process ◽  
Masticatory Muscles ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pressure Pain Thresholds

Pain Sensitivity in Pericranial and Extracranial Regions

Cephalalgia ◽  
2003 ◽  
Vol 23 (6) ◽  
pp. 456-462 ◽  
Author(s):  
S Ashina ◽  
R Jensen ◽  
L Bendtsen
Keyword(s):  
Muscle Pain ◽  
Pain Sensitivity ◽  
Temporal Summation ◽  
Myofascial Pain ◽  
Anterior Tibial Muscle ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pressure Pain Thresholds ◽  
Anterior Tibial ◽  
Nociceptive Input

Chronic myofascial pain is very common in the general population. The pain is most frequently located in the shoulder and neck regions, and nociceptive input from these regions may play an important role for tension-type headache. The mechanisms leading to the frequent occurrence of muscle pain in the shoulder and neck regions are largely unknown. It is possible that the pain is caused by increased sensitivity of muscle nociceptors or by central sensitization induced by nociceptive input from muscle. The primary aim of the present study was to compare muscle pain sensitivity in the trapezius and anterior tibial muscles. The secondary aim was to investigate whether temporal summation, a clinical correlate of wind-up, is more pronounced in muscle than in skin and, if so, whether such a difference is more pronounced in the trapezius than in the anterior tibial region. Sixteen healthy subjects were included. Pressure-pain thresholds and electrical cutaneous and intramuscular pain thresholds were measured at standard anatomical points in the trapezius and anterior tibial regions. Temporal summation was assessed by repetitive electrical stimulation. Pressure-pain thresholds ( P = 0.005) and intramuscular electrical pain thresholds ( P = 0.006) were significantly lower in trapezius than in anterior tibial muscle. Temporal summation was present in skin and muscle of both regions ( P < 0.001). The degree of temporal summation was significantly higher in muscle than in skin in the trapezius region ( P = 0.02), but not in the anterior tibial region ( P = 0.47). In conclusion, we found that muscle pain sensitivity was higher in the trapezius than in the anterior tibial muscle. We also demonstrated that temporal summation could be induced in both muscle and skin and, importantly, that temporal summation was significantly more pronounced in muscle than in skin in the trapezius but not in the anterior tibial region. These data may help to explain why chronic muscle pain most frequently is located in the shoulder and neck regions.

Differences in non-specific physical symptom levels and pressure pain thresholds between patients with masticatory myofascial pain and arthralgia

CRANIO® ◽  
2018 ◽  
Vol 38 (6) ◽  
pp. 389-395 ◽  
Author(s):  
Ricardo De Souza Tesch ◽  
Fabrício Sanches Fernandes ◽  
Eduardo Esberard Favilla ◽  
Gilberto Senechal De Goffredo Filho ◽  
Cristiana Pessoa De Queiroz Faria Goes
Keyword(s):  
Myofascial Pain ◽  
Physical Symptom ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pressure Pain Thresholds

Modulation of central sensitisation by detoxification in MOH: Results of a 12-month detoxification study

Cephalalgia ◽  
2013 ◽  
Vol 33 (7) ◽  
pp. 444-453 ◽  
Author(s):  
Signe B Munksgaard ◽  
Lars Bendtsen ◽  
Rigmor H Jensen
Keyword(s):  
Temporal Summation ◽  
Pain Perception ◽  
Threshold Pressure ◽  
Healthy Controls ◽  
Central Sensitisation ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pain Scores ◽  
Pressure Pain Thresholds

Background Human and animal models suggest that central sensitisation plays a role in medication-overuse headache (MOH). We aimed to study pain perception in MOH patients before and a year after withdrawal. Methods We examined pain perception in 35 MOH patients before and two, six and 12 months after detoxification. For baseline comparison, we tested 40 healthy controls. We measured cephalic and extra-cephalic pressure-pain thresholds and supra-threshold pressure-pain scores and extra-cephalic pain thresholds, supra-threshold pain scores and temporal summation for electrical stimulation. Results Of the 35 patients, 21 patients completed the entire study and remained cured of MOH. Statistically significant differences between patients and healthy controls were found in cephalic pressure-pain thresholds (137.3 kPa vs. 170 kPa, p < 0.05), extra-cephalic pressure pain thresholds (213.3 vs. 274.3 kPa, p < 0.05), in cephalic supra-threshold pressure-pain scores measured on a 100 mm visual analogue scale (61 vs. 27 mm, p < 0.05) and extra-cephalic supra-threshold pain scores for electrical stimulation (19.0 vs. 10.0 mm, p < 0.05). Cephalic supra-threshold pain scores decreased statistically significantly from 50.3 mm at baseline to 28.0 mm at the 12-month follow-up. In contrast to controls, temporal summation was not found in MOH patients before withdrawal, but after detoxification temporal summation normalised. Conclusion The central nervous system is sensitised in patients with MOH. For the first time we demonstrate that the pain perception continues to normalise up to a year after detoxification. This emphasises the importance of detoxification and follow-up to prevent relapse.

The immediate effect of masseter trigger points compression on masticatory muscle activity

2017 ◽  
Vol 13 (2) ◽  
pp. 78-88 ◽  
Author(s):  
Michał Ginszt ◽  
Marcin Berger ◽  
Piotr Gawda ◽  
Andrzej Bożyk ◽  
Joanna Gawda ◽  
...  
Keyword(s):  
Electrical Activity ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Trigger Points ◽  
Masticatory Muscle ◽  
Myofascial Trigger Points ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pressure Pain Thresholds ◽  
Masticatory Muscle Activity

Masticatory muscle pain (MMP) is the most prevalent source of pain related to temporomandibular disorders. Some authors suggest that MMP may be related to the presence of myofascial trigger points (TrPs). Aim. The aim of the present study was to evaluate the immediate effect of masseter (MM) trigger point compressions technique on masticatory muscle activity and pressure pain thresholds (PPT). Material and methods. The participants were 15 healthy adults (10 women and 5 men; mean age 23.1±3.6). All participants included into the study had unilateral latent trigger points (TrPs) in the masseter muscle. Compression technique (CoT) of the latent TrPs in the masseter muscle was performed by pressing with index finger using constant, calibrated pressure of 2 kg/cm2 on the TrPs for 90 seconds. The electrical activity of the examined muscles and pressure pain thresholds for masseter muscles were recorded prior and after CoT. Results. Mean surface electrical activity of the MM muscle with TrPs and both sides of digastric muscle (DA) during resting mandibular position after CoT was significantly lower than before CoT (mean differences: MM 1=-0.783, p=0.001; DA 1=-0.312, p=0.01; DA 2=-0.229, p=0.025). Mean PPT of the MM muscles with TrPs after CoT was significantly higher comparing to baseline (1.819 vs.1.529 kg, respectively; p=0.001). Conclusions. CoT of the TrPs in masseter muscle reduces masticatory muscles resting activity. The use of CoT applied to the TrPs in masseter muscle increases pain pressure threshold. CoT may be effective in the management of MMP. (Ginszt M, Berger M, Gawda P, Bożyk A, Gawda J, Szkutnik J, Suwała M, Majcher P, Kapelan M. The immediate effect of masseter trigger points compression on masticatory muscle activity. Orthod Forum 2017; 13: 79-88).

scholarly journals Quantitative Measurement of Pressure Pain Thresholds on Masticatory Muscles and Temporomandibular Joint Tenderness

1995 ◽  
Vol 49 (4) ◽  
pp. 268-273
Author(s):  
Shinichi Masumi ◽  
Mayumi Ozamoto ◽  
Katsuaki Takeya ◽  
Masahiro Arita ◽  
Hirofumi Kido ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Quantitative Measurement ◽  
Masticatory Muscles ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Joint Tenderness ◽  
Pressure Pain Thresholds

scholarly journals High concurrent validity between digital and analogue algometers to measure pressure pain thresholds in healthy participants and people with migraine: a cross-sectional study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
René F. Castien ◽  
Michel W. Coppieters ◽  
Tom S. C. Durge ◽  
Gwendolyne G. M. Scholten-Peeters
Keyword(s):  
Concurrent Validity ◽  
Tibialis Anterior Muscle ◽  
Intraclass Correlation ◽  
Cephalic Region ◽  
Limits Of Agreement ◽  
Temporal Muscle ◽  
Pain Thresholds ◽  
Pressure Pain ◽  
Pressure Pain Thresholds ◽  
Healthy Participants

Abstract Background Pressure pain thresholds (PPTs) are commonly assessed to quantify mechanical sensitivity in various conditions, including migraine. Digital and analogue algometers are used, but the concurrent validity between these algometers is unknown. Therefore, we assessed the concurrent validity between a digital and analogue algometer to determine PPTs in healthy participants and people with migraine. Methods Twenty-six healthy participants and twenty-nine people with migraine participated in the study. PPTs were measured interictally and bilaterally at the cephalic region (temporal muscle, C1 paraspinal muscles, and trapezius muscle) and extra-cephalic region (extensor carpi radialis muscle and tibialis anterior muscle). PPTs were first determined with a digital algometer, followed by an analogue algometer. Intraclass correlation coefficients (ICC3.1) and limits of agreement were calculated to quantify concurrent validity. Results The concurrent validity between algometers in both groups was moderate to excellent (ICC3.1 ranged from 0.82 to 0.99, with 95%CI: 0.65 to 0.99). Although PPTs measured with the analogue algometer were higher at most locations in both groups (p < 0.05), the mean differences between both devices were less than 18.3 kPa. The variation in methods, such as a hand-held switch (digital algometer) versus verbal commands (analogue algometer) to indicate when the threshold was reached, may explain these differences in scores. The limits of agreement varied per location and between healthy participants and people with migraine. Conclusion The concurrent validity between the digital and analogue algometer is excellent in healthy participants and moderate in people with migraine. Both types of algometer are well-suited for research and clinical practice but are not exchangeable within a study or patient follow-up.

Sign in / Sign up

Export Citation Format

Share Document