Study on masticatory movement and its ability: efficacy of a test capsule in the evaluation of masticatory movement

Murai, K; Okimoto, Kimie; Matsuo, Koichiro; Terada, Yoshihiro

doi:10.1046/j.1365-2842.2000.00487.x

Cited by 16 publications

(12 citation statements)

References 16 publications

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“…In the analysis of mandibular movements, cycle 10 to cycle 18 on average is favourable for analysis. Earlier cycles may be influenced by consciousness, and later cycles may sometimes be interrupted by salivary retention or affected by movements preceding swallowing (8). Moreover, the chewing gum is consistent in property and allows stable masticatory mandibular movements, except that the movement path becomes unstable at swallowing.…”

Section: Discussionmentioning

confidence: 99%

“…Envelope angle was defined as the angle between the line connecting the maximal intercuspal position and a turning point to the closing path from the opening path in the frontal plane and the sagittal plane (33). Mean values from 10 cycles (from cycle 11 to cycle 20) for each subject in each measurement were calculated as representative values for each subject, as movement paths of cycles from cycle 11 to cycle 20 were stable (8).…”

Section: Methodsmentioning

confidence: 99%

“…Various methods have been used to obtain objective evaluations of masticatory performance. For example, measurement of particle size distributions in the food bolus such as peanuts, almonds, raw carrots and silicone rubber (2-4), concentrations of dissolved solutions such as sugar, gelatin and pigment from comminuted test items such as gums and gummy jellies (5)(6)(7)(8)(9), and colour mixtures and shapes of chewed wax cubes (10)(11)(12) have been used as methods of objective evaluation. However, most are complicated and time-consuming and use expensive, bulky equipment for analysis.…”

Section: Introductionmentioning

confidence: 99%

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Association between masticatory performance using a colour-changeable chewing gum and jaw movement

Komagamine

Kanazawa

Minakuchi

et al. 2011

Journal of Oral Rehabilitation

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The purpose of this study was to investigate the relationship between masticatory performance as determined using a colour-changeable chewing gum and mandibular movements. Subjects comprised 45 fully dentate adults (23 men, 22 women; mean age, 28·1 years). The gum was chewed for a specified number of chewing strokes (20, 40, 60, 80, 120 or 160 strokes) without any instructions as to chewing side. A colourimeter was used to measure L*, a* and b* values (CIE-L*a*b* colour system) for the chewed gum, then the difference between two colours in the CIE-L*a*b* colour space (ΔE) for each number of chewing strokes was calculated according to a formula. Index of masticatory performance (ΔE60) for each subject was obtained using ΔE for 20, 40, 60, 80, 120 and 160 strokes. Mandibular movements were recorded using an opto-electric system with six degrees of freedom. Twelve parameters of mandibular movements relating to amplitude, duration, velocity and angle were computed for each cycle, and mean values for 10 cycles (from cycle 11 to 20) were calculated separately. Stepwise multiple regression analysis identified maximum closing velocity and closing angle as predictors accounting for 18% of the variation in ΔE60. These results suggest that lower angles of approach to intercuspation and faster speed during closing duration are associated with colour changes in the colour-changeable chewing gum.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Association between masticatory performance using a colour-changeable chewing gum and jaw movement

Komagamine

Kanazawa

Minakuchi

et al. 2011

Journal of Oral Rehabilitation

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“…The reason for this discrepant result is thought to be because each human subject has a characteristic masticatory behavior, and the masticatory path can be classified into several patterns. 15,16 There are cases with the chopping type of behavior with a small width and those with the grinding type of behavior with a large width, that is, the masticatory width of the subjects would also differ based on the pattern, even among subjects with a similar stability of path. From this experiment it was clarified that the variation of path was unrelated to the amount of lateral movement, but was proportionally related to the amount of vertical movement.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Amount of Incisal Point Movement and Variations of Path in Chewing

Shiga

Kobayashi

Arakawa

et al. 2008

Prosthodont Res. Pract.

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This study confirms that the amount of masticatory movement has an influence over variations of the masticatory path, and that there is a proportional relation between the amount of movement and variations of the masticatory path. AbstractPurpose: The purpose of this experiment was to clarify the effect of amount of masticatory movement on variation of path of mandibular incisor point.Methods: Forty healthy subjects were asked to chew softened chewing gum on their habitual side. For the 10 cycles from the fifth cycle of mastication, the opening distance (amount of vertical movement) and the masticatory width (amount of lateral movement) as the indicators representing the amount of masticatory movement, and the standard deviations of the lateral opening, lateral closing, and vertical compoments as indicators representing the variations of the masticatory path were calculated. The relationship between the indicators for the amount of movement and indicators for variations of the masticatory path were investigated. Results:The values of indicators for variations of the masticatory path were large when the opening distance was large, and there was a significant positive correlation between the two (r =0.508-0.685, P <0.01). There was no correlation between the masticatory width and the indicators for variations of the masticatory path.

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“…Çiğneme performansının belirlenmesi amacıyla doğal test gıdaları için; 5,10, 20, 40, 60, 80, 100 çiğneme darbe sayısı kullanılırken, yapay test gıdaları için ise 10,15,20,40,55,60,80 …”

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Evaluation of Chewing Performance with Implant Supported Overdentures

Demirekin¹,

Türkaslan²

2016

Akd Med J

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ÖZAmaç: Diş eksikliği, bireylerin estetik özelliklerini, fonksiyon ve fonasyonlarını kötü yönde etkilemektedir. Özellikle tam dişsizlik olgularında, hazırlanacak protezler, çiğneme fonksiyonunu etkinleştirip kolaylaştırarak hayat kalitesini yükseltmelidir.Tam protez kullanan hastaların büyük bölümü özellikle alt protezlerin tutuculuğu ve stabilitesinden şikayetçidirler. Tam protez kullanımıyla çiğneme kas aktivitelerinde belirgin bir azalma olduğu bilinmektedir. Tam protez kullanan hastaların, hasta memnuniyetini artırmak amacıyla birçok yöntem denenmiş ve implant destekli tam protezlerle hasta memnuniyetinin belirgin bir düzeyde arttığı görülmüştür. uygulanan tam protezlerin implant yardımıyla stabilitesinin artırılması ile kas aktivitelerinde artış sağlanarak, tam protez kullanan hastaların çiğneme etkinliklerinin artırılması amaçlanmıştır. Gereç ve Yöntemler:Anatomik koşullar göz önüne alınarak, tam dişsiz hastaların her iki çenesine de 2 adet implant yerleştirildi. implantların osseointegrasyonunun ardından protezleri uygulandı. Protezlerin uyum süreci olan 1 aylık kullanımdan sonra test materyali olarak ceviz verildi, hastalar tarafından çiğnemeleri istendi ve hastaların çiğneme performanslarının değerlendirilmesi amacıyla, elek analizi yöntemi kullanıldı. Bu test, implant destekli hareketli protez hastalarının dışında, tam protez ve tam dişli hastalara da uygulandı. Bulgular:Hasta gruplarının elek üzerinde kalan materyal miktarlarının ortalamaları arasındaki farklılıklar değerlendirildiğinde, istatistiksel olarak anlamlı sonuçlar elde edilmiştir. Sonuç:Tam protez kullanan hasta grubu elek açıklığı en geniş olan 8 nolu elekte en yüksek değeri göstermiştir. Bu veriye göre tam protez hastalarının daha küçük boyutlara test materyalini getirebilecek yeterli çiğneme performansının olmadığını göstermektedir. Daha dar açıklığa sahip olan 45-60 nolu eleklerde iDHP hastalarının TD hastalarıyla benzer sonuçlar göstermesi, iDHP hastalarının implantın retansiyona ve stabiliteye katkı sağlaması nedeniyle daha iyi çiğneme performası gösterdiğini ve hastaların daha stabil protezler ile daha rahat çiğneyebildiklerini gösterdi.Anahtar Sözcükler: Mastikatör performans, implant üstü hareketli protezler, Çiğneme performansı, Dental implant, Elek testi aBstract objective: Missing teeth negatively affect aesthetic characteristics of individuals besides the function and phonation. Especially, in the case of edentulous patients, prepared dentures activate and also facilitate the chewing function. What's more, they improve the quality of life for individuals.The majority of patients treated with complete dentures particularly suffer from lower denture retention and stability. It is known that a marked decrease occurs in the activity of the muscles of mastication with the use of complete dentures. Many methods have been tried to increase the satisfaction of patients using complete dentures and patient satisfaction has been shown to increase with complete dentures and implant-supported prostheses. Patients treated with complete dentu...

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Study on masticatory movement and its ability: efficacy of a test capsule in the evaluation of masticatory movement

Cited by 16 publications

References 16 publications

Association between masticatory performance using a colour-changeable chewing gum and jaw movement

Association between masticatory performance using a colour-changeable chewing gum and jaw movement

Relationship between Amount of Incisal Point Movement and Variations of Path in Chewing

Evaluation of Chewing Performance with Implant Supported Overdentures

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