A5018482210- Dental Implant Techniques and Outcomes
- Dental materials and restorations
- Endodontics and Root Canal Treatments
- Orthodontics and Dentofacial Orthopedics
- Orthopaedic implants and arthroplasty
- Periodontal Regeneration and Treatments
- Advanced Sensor and Energy Harvesting Materials
- Temporomandibular Joint Disorders
- Dental Research and COVID-19
- Oropharyngeal Anatomy and Pathologies
- Photopolymerization techniques and applications
- Materials Engineering and Processing
- Additive Manufacturing and 3D Printing Technologies
- Dental Radiography and Imaging
Tokyo Medical and Dental University
2005-2022
Iwate Medical University
2006
The influence of alveolar bone support on the functional capability a tooth remains unclear. It was hypothesized that reduction in causes an increase maximum stress periodontal structures. Mathematical models maxillary incisor to simulate vivo movement were constructed with periodontium normal or reduced height, and widened ligament (PDL) space. Under simulated bite force, tensile at lingual cervical region PDL increased height reduction, but decreased widening. compressive cortical no more...
To investigate the influence of elastic modulus mismatch between tooth and post core restorations on mechanisms root fracture.Three-dimensional mathematical models a filled maxillary premolar with supporting periodontium were constructed. The was restored cast Ni-Cr alloy or fibre-reinforced composite that bonded nonbonded to dentine. In simulation, nonlinear contact analysis executed simulate friction potential sliding phenomenon in interface core. Risks fracture debonding at estimated...
The dynamic behavior of oral soft tissues supporting removable prostheses is not well understood. We hypothesized that the stress and strain mucosa exhibited time-dependent under masticatory loadings. Displacement on maxillary residual ridge was measured in vivo by means a magnetic actuator/sensor vertical loading partially edentulous individuals. Subject-specific finite element models homogeneous bone were constructed based computed tomography images. A mean initial elastic modulus 8.0 ×...
To assess the influence of preparation design on failure risk ceramic inlays by means finite element (FE) analysis.Both 2D and 3D models maxillary first premolar were constructed. MOD designed with an isthmus width 1.5 to 5.0 mm a minimum thickness 1 3 mm. Occlusal contact motion debonding at tooth/ceramic adhesive interface simulated in downward displacement ball (1.5 diameter) onto central groove. The stress distributions within analyzed using models. A maximum occlusal load 250 N was...
This study aimed to introduce a procedure for determining the bilinear elastic moduli (E1 and E2) of periodontal ligament mathematical tooth model analyse stress in mandible. The bone morphology were scanned from dry skull an extracted intact tooth, respectively, reconstructed three-dimensional finite element model. showed good agreement with previously reported vivo premolar movement when E1 first phase 0.05 MPa E2 second 8.0 ε12 0.075 adopted. mandible analysis indicated that remarkably...
The effect of new adhesives on the bond strength elastomeric impression materials to acrylic trays was evaluated. Two polyvinyl siloxane (Fusion and Imprinsis) with reactive one (Examix) a conventional adhesive were tested. Flat, double-sided plates auto-polymerizing methyl methacrylate (10×10×2.5 mm) prepared adhesives. Five specimens by injecting each material into 2-mm gap between two plates. Tensile tests conducted until separation failure occurred. mean strengths Fusion (1.0 MPa)...
The purpose of this study was to evaluate the reinforcing effect fiberglass on composite resin retainers telescopic dentures. A finite element method used assess abutment height and embedment stress distributions retainers. experimental Poly(methylmethacrylate), (CR) fiber-reinforced (FRC) were in fracture test. load FRC significantly greater than those other reduced at upper surface CR origin seen surface, while that cervical region near abutment. These results suggest change pass by...
To evaluate the fracture resistance of computer-aided design and computer-assisted manufacturing restorations as abutment removable partial dentures, experimental blocks, with rest seat made feldspar, hybrid resin composite, lithium disilicate glass ceramic, or zirconia, were subjected to loading by a metallic occlusal rest. The contacted an accurate fit two mismatch contact conditions: bottom sidewall contact. Zirconia exhibited highest load, load was significantly higher than that (p<0.05)...
Purpose: The clinical decision to use abutments for overdentures in cases with loss of tooth structure has not been fully assessed relation the periodontal condition. aim this study was investigate stresses around overdenture and without crown restoration various bone heights.Methods: Three-dimensional finite element models mandibular right first second premolars, a ligament, one five alveolar different heights were constructed. crown-to-root ratios at premolar 0.86 (Model A), 1.05 B), 1.28...
症例の概要：73歳男性．下顎義歯の不適合により咀嚼困難を訴え来院した．上顎は多数の歯が保存可能であったが，下顎はすべての歯が保存困難な状態であった．治療用義歯を用いて咬合の安定を図った後に最終補綴装置として，上顎にブリッジと部分床義歯，下顎に全部床義歯を製作した．