The Effects of Dental Prosthodontic Treatments on Masticatory Function in the Edentulous Patients

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  • IMAI Tomoko
    Department of Geriatric Dentistry, Showa University School of Dentistry
  • KITAGAWA Noboru
    Department of Geriatric Dentistry, Showa University School of Dentistry
  • SATO Yuji
    Department of Geriatric Dentistry, Showa University School of Dentistry
  • YAMAGUCHI Asako
    Department of Geriatric Dentistry, Showa University School of Dentistry
  • KUWAZAWA Miki
    Department of Geriatric Dentistry, Showa University School of Dentistry

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  • 補綴治療が無歯顎者の咀嚼機能に与える影響
  • ホテツ チリョウ ガ ムシ ガクシャ ノ ソシャク キノウ ニ アタエル エイキョウ

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Abstract

Because of promotion of the 8020 campaign and public interest in oral health, the number of existing teeth is presenting an increasing tendency. On the other hand,recently implant overdentures are gain ing the popularity as one of the treatment options for edentulous patients. The purpose of this study is to reveal the mastication level of implant overdentures in edentulous patients relative to dentulous patients and to extract their problems.<br/>Matching the gender and age, subjects in this study were divided by the dentulous group (10 older patients with multiple remaining teeth), IOD group (10 mandibular implant overdenture wearers) and CD group (10 both maxillary and mandibular complete denture wearers). In the above groups, we examined the repetitive saliva swallowing test, physical and social conditions, oral problems, Quality of Life evaluation, occlusal force evaluation using Dental prescale, masticatory efficiency determined by a simplified sieve method and masticatory score (the ratio of acceptable food).<br/>As a result, in the CD group, the mastication score showed their satisfaction although the occlusal force and masticatory efficiency were low. In the IOD group, although the occlusal force and masticatory score were low, the same level of masticatory efficiency with the dentulous group was found. This result suggested that if types and hardness of food are carefully selected, mastication may occur smoothly in the IOD group. In the IOD group, some subjects concerned about esthetic aspects and felt unhappiness regarding their halitosis and other oral problems, suggesting necessity of multidisciplinary approaches in prosthodontic treatment.

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