Three-dimensional finite element analysis of fixed complete-arch prostheses supported by 4 immediate-loaded implants in the completely edentulous maxilla using clinical computerized tomography data.

Mechanical simulation by loading an occlusal force (load), assumed to be that loaded under clinical conditions, was performed in a computerized tomography (CT) data-based immediate-loaded implant placement simulation. Stresses on and displacements of the implants and surrounding bone tissue were analyzed mechanically using 3-dimensional finite element analysis (FEA). The purpose of this study was to investigate the possibility of practical preoperative design and its evaluation and to assess the effects of connected fixation.

Study of salivary strontium and silver concentrations in primary school children related to dental caries.

To investigate the relationship between the salivary Sr and Ag concentrations and tooth conditions, saliva was collected from 521 primary school children in Kitakyushu. The salivary Sr and Ag levels were determined using an atomic absorption spectrophotometry. The salivary Sr and Ag levels were 7.

Maxillary distraction osteogenesis using Le Fort I osteotomy without intraoperative down-fracture.

The aim of this study is to present a technique for maxillary distraction osteogenesis using Le Fort I osteotomy without down-fracture. Six cleft-related patients suffering from severe midfacial deficiency were treated with maxillary distraction osteogenesis. The RED II system was chosen as the extraoral device and the Leipzig retention plate system to anchor the maxillary segment.

Actinobacillus actinomycetemcomitans induces apoptosis in human monocytic THP-1 cells.

It has previously been reported that the murine macrophage cell line J774.1 and the human oral epithelial cell line KB undergo apoptosis as a result of Actinobacillus actinomycetemcomitans infection. Recent studies have demonstrated that apoptosis regulation is modulated by multiple phosphorylation of several different protein kinases, including the major subtypes of the mitogen-activated protein kinase (MAPK) family.

Advanced imaging of carcinoma of the mandibular gingiva.

Objective: To evaluate the validity of MRI in detecting spread of mandibular gingival carcinoma within the bone marrow. SCHEME: Three patients with mandibular gingival carcinoma were examined by panoramic radiography, CT, MRI and radionuclide scanning. The resected mandibles were examined histologically for invasion of bone marrow by the tumor.

Implant diameter and bone density: effect on initial stability and pull-out resistance.

It is well known that the standard diameter dental implant so often utilized is often inadequate in patients with poor bone quality or quantity, and larger diameter implants have been utilized to overcome this deficiency. The objective of this study was to compare the pull-out resistance of small and large diameter (3.25- and 4.

Clinical evaluation of a light-cured glass ionomer lining cement.

This study was a clinical evaluation of a light-cured glass ionomer lining material (Fuji Lining LC) applied to prepared cavities in 45 primary teeth of children aged 3-5 years. The overall assessment, based on clinical and radiographic findings, was 'good' in 42 cases and 'fair' in the other three cases. The material had no effect on the shade of the composite resin restorative material that was used.