Influence of balancing‐side occlusal interference on smoothness of working‐side condylar movement and intra‐articular space in chewing efforts

Yashiro, Kohtaro; Yamamoto, Katsuhiko; Takada, Kenji; Murakami, Shumei; Uchiyama, Yuka; Furukawa, Souhei

doi:10.1111/joor.12225

Cited by 6 publications

(12 citation statements)

References 23 publications

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“…Some authors (16,17) found no relationships between nonworking/working interferences and TMD. Nevertheless, based on a few studies conducted on the function of the condyle and lower jaw with artificial occlusal interferences, it can be concluded that man-dibular function has changed with the occurrence of interference (18,19). Huang et al (18) investigated the influence of the laterotrusion interferences on the movements of the working condyle.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Occlusal Interference on the Mandibular Condylar Position

Čimić¹,

Žaja²,

Šimunković³

et al. 2016

Acta Stomatol Croat

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Section: Discussionmentioning

confidence: 99%

“…interferenca može se zaključiti da se nastankom interferenca pojavljuju promjene u funkciji donje čeljusti (18,19). Huang i suradnici (18) proučavali su utjecaj laterotruzijskih interferenca na kretnje kondila radne strane.…”

Section: Conflict Of Interestunclassified

Influence of Occlusal Interference on the Mandibular Condylar Position

Čimić¹,

Žaja²,

Šimunković³

et al. 2016

Acta Stomatol Croat

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“…They also pointed out the importance of a greater mechanical load on the balancing side condyle during clenching. Okubo et al [26][27][28][29] demonstrated that when an occlusal force is exerted with food interposed, the occlusal contact generated on the balancing side creates mechanical stability, which they inferred was possibly rotating the mandible, with the working side as the fulcrum. From this, the occlusal contact and movement pattern on the balancing side when crushing food during mastication might influence the maxillofacial morphology.…”

Section: Contact Pattern Of the Upper And Lower Dentitionmentioning

confidence: 99%

An advanced method of individual jaw movement analysis

Minemura

Takeuchi

Manome³

et al. 2022

Showa Univ J Med Sci

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The assessment of jaw movements is a common method of evaluating stomatognathic function. However, with conventional methods, detailed examination of the interrelationship between maxillofacial morphology, tooth morphology, and jaw movements is difficult. Therefore, we engineered a method of analyzing individual three-dimensional (3D) jaw movements along a time axis. This study included five adult patients with permanent dentition and no notable oral parafunctional habits who visited the orthodontic department of the Showa University Dental Hospital. We used a jaw movement analysis system to assess jaw movements during free mastication. We assessed the (1) movement trajectory of the main occluding area, (2) rate of change in the distance between the origin and the insertion of the masticatory muscles, and (3) contact patterns of the dentition. The results for (1) showed no interrelationships. For (2) , the origin and insertion of the lateral pterygoid muscle exhibited characteristic changes. The analysis of the contact pattern between the upper and lower dentition showed the contact of the molars posterior to the first premolar when masticating on the balancing side. These results indicate that jaw movements occur in a way that is appropriate for the maxillofacial morphology when food is crushed during mastication. Additionally, the occlusal contact and condylar movement during mastication may be more affected on the balancing side than on the working side. Thus, the jaw movement analysis system used in this study was useful for movement analysis during functional activity.

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“…16 Artificial OIs created with metal, acrylic or composite resin onlays and overlays have been used to assess their functional effects after prosthodontic treatment. 6,[17][18][19][20][21][22][23] Although eccentric OI would implicitly seem to affect food comminution by creating new occlusal guidance, the evidence in this regard is limited. 17 Only one experimental study found that mediotrusive occlusal interference (MOI) had an immediate effect on the degree of comminution.…”

Section: Introductionmentioning

confidence: 99%

Effect of artificial eccentric occlusal interferences on masticatory performance: A randomised double‐blind clinical trial

Da Silva,

Dos Santos,

Carneiro

et al. 2023

J of Oral Rehabilitation

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BackgroundOcclusal interferences lead to changes in mandibular kinematics to compensate and improve function. However, the effects of different types of eccentric disturbance on the comminution capacity are not known.ObjectiveTo determine the immediate effect of eccentric occlusal interferences on masticatory performance.MethodsThis crossover clinical trial included 12 healthy dentate subjects aged 25.2 ± 3.3 years who were randomly submitted to seven types of occlusal interference: unilateral and bilateral laterotrusive and mediotrusive, protrusive, dummy and control (no interference). The interference forms were planned in a semi‐adjustable articulator, fabricated with composite resin and adhered to the mandibular first molars such that subjects' maximum intercuspation was maintained. Masticatory performance and the chewing rate during 20 cycles were evaluated during subjects' comminution of silicone test food under one interference condition per test day; the multiple sieve method was applied to the comminuted particles. The interference was removed upon test completion, and a 1‐week washout period was applied between tests.ResultsComminuted median particle sizes were larger under unilateral (4.94 ± 0.41 mm) and bilateral (4.81 ± 0.49 mm) laterotrusive, bilateral mediotrusive (4.65 ± 0.50 mm) and protrusive (4.83 ± 0.54 mm) interferences (p < .05) than under the control (4.01 ± 0.52 mm) and dummy (4.18 ± 0.58 mm) conditions (p < .05). Only unilateral and bilateral laterotrusive interferences narrowed the comminuted particle size dispersion (p < .05). The chewing rate did not differ among conditions (p = .1944).ConclusionArtificial eccentric interferences had an immediate adverse effect on masticatory performance by resulting in larger comminuted particles.Clinical trial registrationBrazilian Registry of Clinical Trials (RBR‐8g5zfg8).

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Influence of balancing‐side occlusal interference on smoothness of working‐side condylar movement and intra‐articular space in chewing efforts

Cited by 6 publications

References 23 publications

Influence of Occlusal Interference on the Mandibular Condylar Position

Influence of Occlusal Interference on the Mandibular Condylar Position

An advanced method of individual jaw movement analysis

Effect of artificial eccentric occlusal interferences on masticatory performance: A randomised double‐blind clinical trial

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