Unilateral, isometric bite force in 8‐68‐year‐old women and men related to occlusal factors

Bakke, Merete; Holm, Bente; Jensen, Bo Boye Busk; Michler, Lars; Möller, Eigild

doi:10.1111/j.1600-0722.1990.tb00954.x

Cited by 202 publications

(269 citation statements)

References 22 publications

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“…Similarly, in a previous study, the majority of failures for one piece zirconia post and cores were catastrophic, presenting root fracture with or without post fracture. 12 Additionally, a previous study by Bakke et al 13 determined the occlusal forces on anterior teeth to be 222 N. According to the values obtained in the present study, all of the systems exceeded this value. Since the failures occurred at much higher values than the average occlusal forces reported for anterior teeth, none of them could be considered at risk for failure as a result of normal occlusal forces.…”

Section: Discussionsupporting

confidence: 45%

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Ergün¹,

Kaya²,

Eğilmez³

et al. 2014

Cumhuriyet Dent J

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Objectives:The aim of this study was to investigate the effect of different core materials on the fracture strength of endodontically treated roots. Materials and Methods: Twenty-one (CAD/CAM zirconia post) posts were cemented to the central incisors with a resin cement (Rely X Unicem). After fabrication of core restorations (zirconia, resin core, resin composite), the metal crowns were fabricated on these cores and cemented with a polycarboxylate cement. Each specimen was embedded in an acrylic resin mold. A compressive load was applied on the lingual surface (2 mm below the incisal edge) at 45º angle and crosshead speed of 0.5 mm/min until a fracture occurred. Then fracture strength was measured using a universal testing machine. Data were analyzed using one-way analysis of variance and Tukey tests (p<0.05). Results: The core materials used had significant effect on fracture strength of tooth restored with zirconia post (p<0.05). The mean fracture strength values of the specimens restored with different core materials were ranked as follows: Zirconia core (480 ± 132 MPa) > resin composite (344 ± 60 MPa) ≥ resin core (332 ± 89 MPa). Conclusions: Zirconia post-core system showed higher fracture strength values than resin composite and resin core groups. However, the fracture patterns observed in teeth restored with resin-based materials were more favorable than teeth restored with zirconia posts.

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Section: Discussionsupporting

confidence: 45%

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Ergün¹,

Kaya²,

Eğilmez³

et al. 2014

Cumhuriyet Dent J

View full text Add to dashboard Cite

show abstract

“…Bite force is reported to decrease with increasing age after 25 years in female and after 45 years in male (20). It also was reported that the direct effect of age on bite force was statistically significant but relatively small between 37 and 80 years (16).…”

Section: Resultsmentioning

confidence: 87%

Maximal bite force and its association with temporomandibular disorders

et al. 2007

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Individuals with temporomandibular disorders (TMD) are expected to have decreased maximum bite forces (MBF). This way, this study compared the MBF in subjects with TMD to a control group and also evaluated its association with age, gender, height and weight. Forty healthy adults with complete natural dentition divided into four groups according to gender and presence or absence of TMD signs/symptoms (based on the Research Diagnostic Criteria -RDC) underwent a MBF test with a gnathodynamometer in molar and incisal areas. Statistical analysis was performed by ANOVA and Student-Newman-Keuls test (p=0.05), and the relationship between age, gender, weight, height and MBF was verified by Pearson's correlation test. There were no differences in MBF results between TMD and control groups (p>0.05). Female subjects exhibited lower MBF than male and MBF for the anterior area was lower than that for posterior area (p<0.05). Significant correlation was found between MBF and weight in TMD subjects (p<0.05), except for the anterior area in female subjects. There was a positive correlation between MBF and height in TMD male subjects (p<0.05). Within the limitations of this study, it is possible to conclude that bite force was not affected by TMD. Correlation between MBF and weight in TMD subjects and between MBF and height in TMD male subjects was observed.

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“…An increase in number of chewing strokes was observed with aging (7)(8)(9), possibly due to the concomitant decrease in muscle mass and maximal occlusal force that occurs with age (10)(11)(12)(13). In addition, many studies reported a 50-80% decrease in mastication efficiency in denture wearers compared with dentate subjects (14)(15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 99%

Blood flow in denture-supporting maxillary mucosa in response to simulated mastication by loading

Okada

Ueda

Sakurai

2010

Journal of Prosthodontic Research

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Purpose: The purpose of this study was to determine the effect of number of chewing strokes on change in blood flow in denture-supporting maxillary mucosa.Methods: Subjects consisted of 11 healthy dentate men. Mastication was simulated by intermittent loading (10 N, 1/0.75 Hz) on a lateral area of the hard palate using a 2-cm 2 test plate.Loading duration was set at 1, 4, 8 or 12 minutes (80, 320, 640 or 960 chewing strokes). A non-contact laser Doppler blood flow meter was used to determine change in blood flow and time taken for recovery to 110% of the pre-loading value. Mean blood flow at pre-loading and at each duration of intermittent loading were compared using a repeated measures ANOVA (α =0.05) and the Dunnett test. Recovery times for each loading duration were compared using a one-way ANOVA (α=0.05) and the Bonferroni test.Results: Three subjects showed no increase in mean blood flow with loading. Eight subjects consistently showed an increase in mean blood flow during intermittent loading relative to at pre-loading. Duration of loading yielded no significant difference in mean blood flow.Significant differences were observed in recovery time between at after 8 min loading and at after the other 3 loading (1 min, 4 min, and 12 min loading) durations.Conclusion: Number of simulated chewing strokes showed no influence on mean blood flow during intermittent loading in denture-supporting mucosa. It did, however, affect 3 recovery time taken for blood flow to return to its pre-loading level.

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Unilateral, isometric bite force in 8‐68‐year‐old women and men related to occlusal factors

Cited by 202 publications

References 22 publications

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Maximal bite force and its association with temporomandibular disorders

Blood flow in denture-supporting maxillary mucosa in response to simulated mastication by loading

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