上顎顎義歯症例における直接支台装置に関する実態調査

木村 尚美; 吉岡 文; 尾澤 昌悟; 宮前 真; 岡崎 祥子; 平井 秀明; 坂根 瑞; 浅見 和哉; 秦 正樹; 松川 良平; 山田 康平; 門田 千晶; 服部 正巳; 田中 貴信

doi:10.34333/jamp.35.2_59

Investigation of Direct Retainers for Obturator Prostheses

Naomi KIMURA, Fumi YOSHIOKA, Shogo OZAWA, Shin MIYAMAE, Sachiko OKAZAKI, Hideaki HIRAI, Mizuho SAKANE, Kazuya ASAMI, Masaki HATA, Ryohei MASTUKAWA, Kohei YAMADA, Chiaki KADOTA, Masami HATTORI, Yoshinobu TANAKA

Author information

Naomi KIMURA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Fumi YOSHIOKA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Shogo OZAWA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Shin MIYAMAE
Department of Gerodontology, School of Dentistry, Aichi Gakuin University
Sachiko OKAZAKI
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Hideaki HIRAI
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Mizuho SAKANE
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Kazuya ASAMI
Department of Gerodontology, School of Dentistry, Aichi Gakuin University
Masaki HATA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Ryohei MASTUKAWA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Kohei YAMADA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Chiaki KADOTA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University
Department of Rehabilitation Medicine, Seirei Hamamatsu General Hospital
Masami HATTORI
Department of Gerodontology, School of Dentistry, Aichi Gakuin University
Yoshinobu TANAKA
Department of Removable Prosthodontics, School of Dentistry, Aichi Gakuin University

Keywords: prognosis, obturator prosthesis, direct retainer, probing depth

JOURNAL FREE ACCESS

2012 Volume 35 Issue 2 Pages 59-65

DOI https://doi.org/10.34333/jamp.35.2_59

Details

Abstract

The purpose of this study was to describe a long-term observation of abutment teeth in patients with maxillary defects and rehabilitated with obturator prostheses. Forty-eight patients participated in this study. Maxillary defect classification, history of irradiation therapy and flap reconstruction, types of obturator design and weight, types of direct retainers and duration, and periodontal conditions were investigated retrospectively. The results showed that the majority of obturator wearers had a maxillary midline defect or unilateral defect in which their prosthesis used a wire clasp or magnetic attachment as a direct retainer near the defect side. The average duration of abutment teeth was five years and ten months, and periodontal conditions were favorable with a probing depth of less than 3 mm in most of the cases. While nine percent of the abutment teeth were extracted, in most of the cases the teeth spontaneously dropped out due to excessive loading over long-term usage and deteriorated periodontal conditions. The probing depth and weight of the obturator showed a significant positive relation. Alveolar bone around the abutment teeth was significantly highly absorbed in midline resection cases. This study suggested typical designs of obturator prostheses and prognosis for direct retainers. Further study is needed for indirect retainers and functional assessments.

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