Study on the Fracture Strength of Root Reconstructed with Post and Core : Alveolar Bone Resorbed Case

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概要

• 論文の詳細を見る

• This study evaluated the influence of alveolar bone level on the fracture resistance of root restored with post and core. Forty-eight extracted human mandibular premolars were divided into six groups. Cast posts and cores were cemented (MN8 and MP8) or resin cores were built up with fiber posts and composite resin (FN8, FP8, FN4, and FP4). Post length was 8mm (MN8, MP8, FN8, and FP8) or 4mm (FN4 and FP4). Specimens were embedded 2mm (MN8, FN8 and FN4) or 5mm (MP8, FP8 and FP4) below cement-enamel junction. All specimens were loaded at 45 degrees to the long axis until fracture. With normal bone model, cast post and core (MN8) showed the highest fracture resistance (2262.4N). However, in the resorbed bone model, there were no significant differences in fracture resistance between cast post and core and fiber post with composite resin.

• 日本歯科理工学会の論文

著者

• MIURA Hiroyuki

  Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental U

• Miura Hiroyuki

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc

• Miura Hiroyuki

  Fixed Prosthodontics Department Of Restorative Science Graduate School Tokyo Medical And Dental Univ

• Yoshida Kenichi

  Division Of Applied Prosthodontics Nagasaki University Graduate School Of Biomedical Sciences

• Okada Daizo

  Fixed Prosthodontics Department Of Restorative Sciences Graduate School Tokyo Medical And Dental Uni

• Okada D

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc

• Yoshida Keiichi

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc

• KOMADA Wataru

  Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate

• Komada Wataru

  Fixed Prosthodontics Department Of Restorative Sciences Graduate School Tokyo Medical And Dental Uni

• Miura Hiroyuki

  Fixed Prosthodontics Department Of Restorative Sciences Graduate School Tokyo Medical And Dental Uni

• Yoshida K

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate Sc

• Miura H

  Fixed Prosthodontics Tokyo Medical And Dental University

• Okada D

  Fixed Prosthodontics Tokyo Medical And Dental University

• Okada Daizo

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate School Tokyo Medical And Dental University

• Komada Wataru

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate School Tokyo Medical And Dental University

• Miura Hiroyuki

  Fixed Prosthodontics Department Of Restorative Sciences Division Of Oral Health Sciences Graduate School Tokyo Medical And Dental University

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