The Effect of Disclusion Time Reduction on Maximal Clench Muscle Activity Levels

Kerstein, Robert B.; Radke, John

doi:10.1179/crn.2006.026

Cited by 57 publications

(48 citation statements)

References 13 publications

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“…The advent of disclusion time reduction therapy using properly performed ICAGD[16203233343536] is a potentially new direction in the treatment of myofascial pain dysfunction patients. Further studies with longer follow-up should be performed using ICAGD in the treatment of occluso-muscle pains of TMD disorders.…”

Section: Resultsmentioning

confidence: 99%

The effect of disocclusion time-reduction therapy to treat chronic myofascial pain: A single group interventional study with 3 year follow-up of 100 cases

Thumati

2016

J Indian Prosthodont Soc

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Purpose:The purpose of this study is to evaluate the longevity of reduced disclusion time in treating and removing myofascial pain dysfunction symptoms following the T-Scan-based, immediate complete anterior guidance development (ICAGD) coronoplasty. This measured occlusal adjustment has been shown to reduce the muscle hyperactivity of myofascial pain.Methods:Myofascial pain symptomatic patients were recruited as per the diagnostic criteria for temporomandibular disorders (TMDs), including the clinical protocol and assessment instruments outlined by the international RDC/TMD consortium network (version: January 20, 2014) to assess the efficacy of reduced disclusion time in left and right lateral excursions to resolve the myofascial pain symptoms. As per the inclusion and exclusion criteria, 100 cases were treated with ICAGD in three visits, each 1 week apart. Recall disclusion time measurements were recorded every 3 months over 3 years. The RDC/TMD questionnaire was used for symptom assessment at every recall visit. ICAGD brought pretreatment prolonged disclusion time down to <0.4 s, as quantified from T-Scan force and time data records, while the subjects were assessed for symptom relief. The Wilcoxon signed-rank test was used for statistical analysis (P < 0.05).Results:Changes in the intensity of many symptoms from reducing the disclusion time to <0.4 s were statistically significant from treatment day 1, and onward through the 3-year period of observation (P < 0.05).Conclusion:The results indicate that ICAGD reduces the musculoskeletal symptoms of myofascial pain, such that this methodology increases clinical therapeutic success.

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Section: Resultsmentioning

confidence: 99%

The effect of disocclusion time-reduction therapy to treat chronic myofascial pain: A single group interventional study with 3 year follow-up of 100 cases

Thumati

2016

J Indian Prosthodont Soc

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“…The researchers [23,24] have observed the shorter disoccluding time is in the benefit of dental and joint structures. Extended disclusion time leads to increased EMG activityof masticatory muscles and stress on articular disc ligaments [25].…”

Section: Discussionmentioning

confidence: 99%

Digital Evaluation of Functional Occlusion Parameters and their Association with Temporomandibular Disorders

Haralur¹

2013

JCDR

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Context: Dental researchers are contradictory in their opinion on the role of occlusion in TMD. Occlusal evaluation of both conventional and digital methods in TMD patients will provide the accurate information about the factors accountable for occlusal instability. Identifying the factors responsible will facilitate precise diagnosis and treatment for TMD. Aim:The Aim of the study was to determine the dynamic occlusal parameters strongly associated with the etiology of Temporomandibular disorders. Material and Methods:Study group consisted of 100 patients; it included 50 patients with normal TMJ(Group I) and remaining 50 patients had a minimum of one positive sign or symptom of Temporomandibular disorder (GroupII). The patient's dynamic occlusal contacts were evaluated by both conventional and digital methods. The Articulating paper was utilized for conventional occlusion analysis. During conventional analysis centric, lateral and protrusive interferences were evaluated along with loss of vertical dimension. Digital occlusal analysis was performed with T-Scan III. Clusion time, disclusion times were recorded for both groups.Chi-square and Student 't' statistical analyses were performed to ascertain the association and statistically significant difference between the groups using SPSS19.Results: Group II patients predominantly (66%)had Groupfunction occlusion compared to Group I subject. Centric slide more than 2 mm found to have strong influence (p-value 0.008) on the etiology of TMD. Among the occlusal interferences evaluated balanced side interferences had a strong correlation with TMD with P-value of 0.003. Working side interferences, protrusive interferences had a p-value of 0.157, 0.826 respectively, indicating weak association. T-Scan analysis showed Group I had 0.689, 0.9136, 0.7952, 0.9794 seconds of clusion, left, right, protrusive disclusion time respectively compared to corresponding 1.862, 1.7995, 1.6978, 1.9296 seconds for Group II. Statistically significant difference (p≤0.05) was found between the mean values of both groups. Conclusion:Among the dynamic occlusal parameters evaluated centric slide and balancing side interferences were found to be highly influential in TMD etiology. TMD patients had prolonged clusion and disclusion times compared to healthy TMJ patients.SatheeSh B. haralur

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“…The disclusion time more than 1.39 s reported to initiate the elevated muscular contraction in masseter and temporalis. [1415] The EMG study showed the resting state muscular activity was observed in disclusion time <0.5 s. The prolonged disclusion time is also reported to be the etiological factor for myofunctional pain dysfunction syndrome. [15] Disclusion time during supine position was 0.872 (0.372), 0.862 (0.378), 1.051 (0.472) s for left lateral, right lateral and protrusive disclusion.…”

Section: Discussionmentioning

confidence: 99%

Influence of functional head postures on the dynamic functional occlusal parameters

Haralur¹,

Al-Gadhaan²,

Al-Qahtani³

et al. 2014

Ann Med Health Sci Res

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Background:The dentist utilizes supine position during therapeutic procedures, while the patients assumes extended head posture during mastication. It is critical for the restorative dentist to evaluate and understand the possible effect of change in head posture on occlusal contacts. An understanding of the possible effect will help in better restorative rehabilitation.Aim:The aim of the following study is to evaluate the influence of head postures on the dynamic occlusal parameters.Subjects and Methods:Study group consisted of 50 students from College of Dentistry, King Khalid University. The students were selected randomly from the college student body; they were in the age group of 18-25 years. The head posture evaluated were supine position, upright sitting position and alert feeding position. The head postures were standardized by goniometer and dynamic occlusal contacts were analyzed with Tscan. The data obtained was subjected to statistical analysis with repeated measures of ANOVA to identify the changes in occlusal contacts.Results:The occlusion time was 1.366 (0.484), 1.226 (0.562) and 0.997 (0.429) s for supine, upright and alert feeding position respectively. Disclusion time was for right lateral movement was 0.872 (0.372), 0.629 (0.290) and 0.831 (0.369) s for corresponding head postures. Left lateral disclusion time was 0.621 (0.274), 0.274 (0.345) s for upright and alert feeding posture. Repeated measures of ANOVA showed statistically significant difference between occlusal contacts in different head postures.Conclusion:Within the limitation of the study, it was concluded that there were significant changes in initial occlusal contact, occlusion and disclusion time at all the head postures evaluated in the study.

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The Effect of Disclusion Time Reduction on Maximal Clench Muscle Activity Levels

Cited by 57 publications

References 13 publications

The effect of disocclusion time-reduction therapy to treat chronic myofascial pain: A single group interventional study with 3 year follow-up of 100 cases

The effect of disocclusion time-reduction therapy to treat chronic myofascial pain: A single group interventional study with 3 year follow-up of 100 cases

Digital Evaluation of Functional Occlusion Parameters and their Association with Temporomandibular Disorders

Influence of functional head postures on the dynamic functional occlusal parameters

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