Short-term crossover study on the effect of orthogonalized deep- grooved posterior artificial teeth on the masticatory efficiency of complete denture wearers

Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Hikaru Sugimoto, Shougo Minagi

Research output: Contribution to journalArticle

Abstract

Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated. Six edentulous participants, 1 male and 5 females, were assigned into two groups. One received duplicated complete dentures with grooved molars first, and the other received duplicated complete dentures with conventional molars first. The design of the teeth was crossover after evaluating masticatory efficiency. Raw carrot, raw lettuce and mixed foodstuffs were used to evaluate masticatory efficiency. Subjects were instructed to masticate 20 strokes and arbitrary strokes until they felt like swallowing. Results: The number of masticatory strokes taken was significantly smaller using the grooved design (p<.05). Masticatory efficiency analysis revealed that the grooved design achieved significantly higher masticatory efficiency at 20 masticatory strokes for raw carrot and mixed foodstuffs (p<.05). Conclusion: Results show that compared with conventional lingualized occlusion, the grooved design accomplishes higher masticatory efficiency in vivo. Considering the distinction of this design that it can be applied to any existing denture occlusion, the design might help improve the dietary life of the elderly.

Original languageEnglish
Pages (from-to)255-264
Number of pages10
JournalOpen Dentistry Journal
Volume12
DOIs
Publication statusPublished - Mar 30 2018

Fingerprint

Artificial Teeth
Complete Denture
Cross-Over Studies
Stroke
Daucus carota
Denture Design
Lettuce
Mastication
Deglutition
Tooth
Quality of Life

Keywords

  • Artificial teeth
  • Denture
  • Elderly
  • Lingualized occlusion
  • Mastication
  • Masticatory efficiency

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Short-term crossover study on the effect of orthogonalized deep- grooved posterior artificial teeth on the masticatory efficiency of complete denture wearers. / Hashimoto, Yuki; Sugimoto, Kyoko; Tanaka, Yuki; Sugimoto, Hikaru; Minagi, Shougo.

In: Open Dentistry Journal, Vol. 12, 30.03.2018, p. 255-264.

Research output: Contribution to journalArticle

@article{2c5951974a814b409e7630187e15fa13,
title = "Short-term crossover study on the effect of orthogonalized deep- grooved posterior artificial teeth on the masticatory efficiency of complete denture wearers",
abstract = "Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated. Six edentulous participants, 1 male and 5 females, were assigned into two groups. One received duplicated complete dentures with grooved molars first, and the other received duplicated complete dentures with conventional molars first. The design of the teeth was crossover after evaluating masticatory efficiency. Raw carrot, raw lettuce and mixed foodstuffs were used to evaluate masticatory efficiency. Subjects were instructed to masticate 20 strokes and arbitrary strokes until they felt like swallowing. Results: The number of masticatory strokes taken was significantly smaller using the grooved design (p<.05). Masticatory efficiency analysis revealed that the grooved design achieved significantly higher masticatory efficiency at 20 masticatory strokes for raw carrot and mixed foodstuffs (p<.05). Conclusion: Results show that compared with conventional lingualized occlusion, the grooved design accomplishes higher masticatory efficiency in vivo. Considering the distinction of this design that it can be applied to any existing denture occlusion, the design might help improve the dietary life of the elderly.",
keywords = "Artificial teeth, Denture, Elderly, Lingualized occlusion, Mastication, Masticatory efficiency",
author = "Yuki Hashimoto and Kyoko Sugimoto and Yuki Tanaka and Hikaru Sugimoto and Shougo Minagi",
year = "2018",
month = "3",
day = "30",
doi = "10.2174/1874210601812010255",
language = "English",
volume = "12",
pages = "255--264",
journal = "Open Dentistry Journal",
issn = "1874-2106",
publisher = "Bentham Science Publishers",

}

TY - JOUR

T1 - Short-term crossover study on the effect of orthogonalized deep- grooved posterior artificial teeth on the masticatory efficiency of complete denture wearers

AU - Hashimoto, Yuki

AU - Sugimoto, Kyoko

AU - Tanaka, Yuki

AU - Sugimoto, Hikaru

AU - Minagi, Shougo

PY - 2018/3/30

Y1 - 2018/3/30

N2 - Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated. Six edentulous participants, 1 male and 5 females, were assigned into two groups. One received duplicated complete dentures with grooved molars first, and the other received duplicated complete dentures with conventional molars first. The design of the teeth was crossover after evaluating masticatory efficiency. Raw carrot, raw lettuce and mixed foodstuffs were used to evaluate masticatory efficiency. Subjects were instructed to masticate 20 strokes and arbitrary strokes until they felt like swallowing. Results: The number of masticatory strokes taken was significantly smaller using the grooved design (p<.05). Masticatory efficiency analysis revealed that the grooved design achieved significantly higher masticatory efficiency at 20 masticatory strokes for raw carrot and mixed foodstuffs (p<.05). Conclusion: Results show that compared with conventional lingualized occlusion, the grooved design accomplishes higher masticatory efficiency in vivo. Considering the distinction of this design that it can be applied to any existing denture occlusion, the design might help improve the dietary life of the elderly.

AB - Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated. Six edentulous participants, 1 male and 5 females, were assigned into two groups. One received duplicated complete dentures with grooved molars first, and the other received duplicated complete dentures with conventional molars first. The design of the teeth was crossover after evaluating masticatory efficiency. Raw carrot, raw lettuce and mixed foodstuffs were used to evaluate masticatory efficiency. Subjects were instructed to masticate 20 strokes and arbitrary strokes until they felt like swallowing. Results: The number of masticatory strokes taken was significantly smaller using the grooved design (p<.05). Masticatory efficiency analysis revealed that the grooved design achieved significantly higher masticatory efficiency at 20 masticatory strokes for raw carrot and mixed foodstuffs (p<.05). Conclusion: Results show that compared with conventional lingualized occlusion, the grooved design accomplishes higher masticatory efficiency in vivo. Considering the distinction of this design that it can be applied to any existing denture occlusion, the design might help improve the dietary life of the elderly.

KW - Artificial teeth

KW - Denture

KW - Elderly

KW - Lingualized occlusion

KW - Mastication

KW - Masticatory efficiency

UR - http://www.scopus.com/inward/record.url?scp=85046653232&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046653232&partnerID=8YFLogxK

U2 - 10.2174/1874210601812010255

DO - 10.2174/1874210601812010255

M3 - Article

AN - SCOPUS:85046653232

VL - 12

SP - 255

EP - 264

JO - Open Dentistry Journal

JF - Open Dentistry Journal

SN - 1874-2106

ER -