Relationship between age and occlusal force in adults with natural dentition

Shiga, Hiroshi; Komino, Marie; Yokoyama, Masaoki; Sano, Mako; Arakawa, Ichiro; Nakajima, Kunihisa; Fujii, Shigehisa

doi:10.1007/s10266-022-00750-4

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…The mean fracture load values of the IZCs evaluated in the current study exceeded 1.91 kN, which is higher than the physiological average occlusal force of 0.45-0.57 kN in adults 32) . This demonstrates the potential for the clinical application of IZCs with mechanical retentive devices employed in the current study.…”

Section: Discussioncontrasting

confidence: 68%

Influence of attaching mechanical retentive devices onto frameworks on fracture resistance of implant-supported zirconia crowns

KOBAYASHI,

HONDA,

KUBOCHI

et al. 2024

Dent. Mater. J.

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This study investigated the fracture load of implant-supported zirconia crowns (IZCs), in which indirect composite resin or feldspathic porcelain was layered onto zirconia frameworks with mechanical retentive devices. Three different zirconia frameworks were assessed: attaching mechanical retentive devices on glaze and opaque porcelain materials (GL and OP groups, respectively), and no attaching mechanical retentive devices (ND group). The frameworks were layered using feldspathic porcelain (FP veneer) and indirect composite resin (IC veneer). Fracture load of the specimens was measured. In FP veneer, the GL group recorded the highest fracture load. In the IC veneer, the GL and OP groups had significantly higher fracture load than the ND group. The fracture resistance of IZCs can be enhanced by applying glaze material before attaching mechanical retentive devices for porcelain layering. The mechanical retentive devices effectively yielded mechanical interlocking between the zirconia frameworks and the IC veneer in GL and OP groups.

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Section: Discussioncontrasting

confidence: 68%

Influence of attaching mechanical retentive devices onto frameworks on fracture resistance of implant-supported zirconia crowns

KOBAYASHI,

HONDA,

KUBOCHI

et al. 2024

Dent. Mater. J.

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“…We can then perhaps also explain the strong tendency for females to have less tissue loss than males. Females have a lower bite force [ 34 , 35 ], so lower loads act on the tooth surfaces. If we assume that enamel cracks play a relevant role in the wear process, the healing tendency for such cracks could be important.…”

Section: Discussionmentioning

confidence: 99%

Intraoral scanner-based monitoring of tooth wear in young adults: 36-month results

Schlenz,

Wöstmann

et al. 2024

Clin Oral Invest

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Objectives The study continues our longitudinal observation of wear aiming to further monitoring of progression and lesion morphology and to identify relationships with assumed aetiological factors. Materials and methods Molars (FDI #36 or #46) of 74 participants (23.8 ± 2.2 years) were scanned (Trios 3, 3Shape) at the third follow-up (T3; observation period 1,111 ± 10 days). Data sets from T3, T2 (24-month follow-up) and T1 (12-month follow-up) were superimposed with baseline in a 3D analysis software (GOM Inspect). Wear was quantified as maximum vertical tissue loss (µm; median, 95% CI) in various occlusal areas (4/5 cusps and 2 ridges). Morphologies were classified into cupping (C), facet (F), and combined cupping-facet (CF). Aetiological factors were assessed with questionnaires. Results Wear increased at T3 significantly at low rates in all areas of the occlusal surface (median between 7.0 (4.0;10.5) and 9.5 (6.0;15.0) µm). There was a clear trend for higher loss values in males, but no association with other factors such as nutrition. C and CF showed significantly higher loss values than F. Areas without initial wear developed F first, which either persisted or developed into C and CF. Conclusions Wear continued at low rates with C/CF morphology and sex as significant factors. Cupped lesions seem to develop from facets and thus may not be a valid diagnostic criterion for erosive tooth wear. Clinical relevance Wear is a cumulative process that apparently follows complex mechanisms that cannot be conceptualized in simplified terms; C and CF may be indicators for higher progression rates.

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“…Given the established reliability achieved through pre-experimental practice, bite force was measured once after the subject was instructed on and had practiced the method for performing maximum clenching before the examination. The maximum bite forces were calculated from the pressure and area at the contact points using the software (Bite Force Analyzer, GC, Tokyo, Japan) [ 27 , 28 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Occlusal Contact on Maxillary Alveolar Bone Morphology in Patients with and without Anterior Open Bite: A Cross-Sectional Study

Shimizu-Tomoda,

Ishida,

Ishizaki-Terauchi

et al. 2024

JCM

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Background/Objectives: Anterior open bite (AOB) is characterized by the absence of occlusal contact between the maxillary and mandibular anterior teeth, while the posterior teeth are in contact when occluded. Here, we aimed to clarify the difference in maxillary alveolar bone morphology in adult patients with and without AOB. Methods: This cross-sectional study was conducted on 50 adults aged 18–39 years: 25 patients without AOB (control group; 13 males and 12 females; age: mean ± standard deviation [SD], 22.2 ± 4.5 years) and 25 patients with AOB (9 males and 16 females; age: 24.2 ± 6.4 years). Using cone-beam computed tomography images, the height of the maxillary alveolar bone crest in the anterior and posterior teeth and thickness of the alveolar cortical bone on the labial and palatal sides were measured and compared between the two groups. An independent t-test and Pearson’s correlation analysis were used to examine statistical significance (p < 0.05). Results: The AOB group showed a significantly longer (p = 0.016) posterior alveolar crest and thinner cortical bone on the buccal (p < 0.001) and lingual (p = 0.009) sides of the anterior region and the buccal (p = 0.006) sides of the posterior region than the control group did. Moreover, a significant negative correlation (p = 0.046; r = −0.403) was observed between bite force and cortical bone thickness on the buccal side of the posterior region in the AOB group. Conclusions: It is suggested that the absence of occlusal contact in the anterior area influences the alveolar bone morphology of the maxilla.

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Relationship between age and occlusal force in adults with natural dentition

Cited by 15 publications

References 29 publications

Influence of attaching mechanical retentive devices onto frameworks on fracture resistance of implant-supported zirconia crowns

Influence of attaching mechanical retentive devices onto frameworks on fracture resistance of implant-supported zirconia crowns

Intraoral scanner-based monitoring of tooth wear in young adults: 36-month results

Effects of Occlusal Contact on Maxillary Alveolar Bone Morphology in Patients with and without Anterior Open Bite: A Cross-Sectional Study

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