Twitch interpolation in the assessment of the maximum force-generating capacity of the jaw-closing muscles in man

Lyons, M. F.; Cadden, Samuel W.; Baxendale, R. H.; Yemm, R.

doi:10.1016/s0003-9969(96)00086-6

Cited by 26 publications

(14 citation statements)

References 11 publications

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“…Fracture is one of the greatest concerns when FPDs are fabricated from ceramic or resin material. The maximum bite force of adult males in the posterior region is said to be around 600 N 26,27) . In our experiment, control FPDs that were not reinforced with FRC had such low fracture loads(an average of 403 N) that they probably would not be able to withstand the maximum bite force in the posterior region.…”

Section: Discussionmentioning

confidence: 99%

Fracture Resistance of Inlay-retained Fixed Partial Dentures Reinforced with Fiber-reinforced Composite

Waki

Nakamura

et al. 2006

Dent. Mater. J.

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In this study, the effect on the fracture load of inlay-retained composite fixed partial dentures（FPDs）caused by reinforcing them with fiber-reinforced composite（FRC）in different positions was examined. Experimental FPDs were fabricated using Estenia/EG Fiber（Kuraray Medical） . Pontic reinforcement was then performed in one of the following three ways: reinforced the central area in a single line or in double straight lines, or reinforced the bottom in a curved line. The finding was that, when the area ranging from the connector to the bottom of the pontic was reinforced with FRC in a curved line, the fracture load of the FPDs tended to become higher. In addition, the FPDs fractured mainly at the veneering composite of the connector area. Based on the results of this study, it was concluded that reinforcement using FRC is effective, and that the veneering composite in the connector area needs to have sufficient strength to prevent the fractures.

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Section: Discussionmentioning

confidence: 99%

Fracture Resistance of Inlay-retained Fixed Partial Dentures Reinforced with Fiber-reinforced Composite

Waki

Nakamura

et al. 2006

Dent. Mater. J.

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“…The load was then increased 25 - 50N, and the entire was process repeated. Within a simulated human occlusal force range from 0 N to 522 N [ 12 , 13 ], the casts were loaded at 25, 50, 100, 150, 200, 250, 300, 350, 400, and 450 N. The experimental design produced 100 photos for analysis. In all photographs, 6 consistent markings (indicating 6 contacts) were identified on both casts.…”

Section: Methodsmentioning

confidence: 99%

Determining a Relationship Between Applied Occlusal Load and Articulating Paper Mark Area

Carey¹,

Craig²,

Kerstein³

et al. 2007

TODENTJ

153

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Articulating paper mark size has been widely accepted in the dental community to be descriptive of occlusal load. The objective of this study is to determine if any direct relationship exists between articulating paper mark area and applied occlusal load. A uniaxial testing machine repeatedly applied a compressive load, beginning at 25N and incrementally continuing up to 450N, to a pair of epoxy dental casts with articulating paper interposed. The resultant paper markings (n = 600) were photographed, and analyzed the mark area using a photographic image analysis and sketching program. A two-tailed Student's t-test for unequal variances compared the measured size of the mark area between twelve different teeth (p < 0.05). Graphical interpretation of the data indicated that the mark area increased non-linearly with increasing load. When the data was grouped to compare consistency of the mark area between teeth, a high variability of mark area was observed between different teeth at the same applied load. The Student's t-test found significant differences in the size of the mark area approximately 80% of the time. No direct relationship between paper mark area and applied load could be found, although the trend showed increasing mark area with elevating load. When selecting teeth to adjust, an operator should not assume the size of paper markings, accurately describing the markings' occlusal contact force content.

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“…The value of 240 N is within the researched range of average human occlusal force. 20,21 The T-Scan II occlusal analysis recording handle was mounted in the POFS handle nest in order to fix the recording handle in place so that each test sensor was aligned consistently in the same orientation, centered on the midline of the maxillary incisors of the casts ( Figure 2). The nest stabilized the recording handle while the test sensor underwent repeated closures of the epoxy casts to minimize sensor-positioning variability.…”

Section: Data Collectionmentioning

confidence: 99%

A Force Reproduction Analysis of Two Recording Sensors of a Computerized Occlusal Analysis System

Kerstein¹,

Lowe²,

Harty³

et al. 2006

CRANIO®

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The purpose of this study was to measure the performance of a new design of occlusal sensor, the high definition (HD) sensor, and directly compare this sensor to the previous design. This new HD sensor design has increased active recording area by 33%, and decreased inactive recording area by 50% as compared to the previous design (G3). This was accomplished by determining the force reproduction variability for repeated occlusal closures on the same sensor for a sampling of sensors from both designs. Thirty (30) G3 and 30 HD sensors were consistently positioned and loaded 24 times between articulated epoxy casts by a Pneumatic Occlusal Force Simulator. Their force reproduction consistency was measured as an electronic voltage drop across six occlusal contacts that were consistently located on all sensors. The force variability of the two sensor designs was determined by comparing the consistency of the voltage drops across the six occlusal contacts. An analysis of variance was employed to determine the variability of force reproduction over multiple closures across six occlusal contact regions. For five of the six contacts, the G3 sensor mean variances, were significantly larger (p < 0.05) than those of the HD sensor. The within sensor variability of the HD sensor was significantly less than that of the G3 sensor. Within the limitations of this study, the HD sensor exhibited less variable force reproduction than the G3 sensor for at least 20 in-laboratory loading cycles.

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Twitch interpolation in the assessment of the maximum force-generating capacity of the jaw-closing muscles in man

Cited by 26 publications

References 11 publications

Fracture Resistance of Inlay-retained Fixed Partial Dentures Reinforced with Fiber-reinforced Composite

Fracture Resistance of Inlay-retained Fixed Partial Dentures Reinforced with Fiber-reinforced Composite

Determining a Relationship Between Applied Occlusal Load and Articulating Paper Mark Area

A Force Reproduction Analysis of Two Recording Sensors of a Computerized Occlusal Analysis System

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