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INTRODUCTION The palate is a suitable site for the placement of orthodontic mini-implants. This study was conducted to assess the bone thickness of the palate to provide a more reliable guide for mini-implant placement. METHODS Computed tomographic records of 18 adults (9 men, 9 women) 18 to 35 years old (mean age, 26.8 +/- 4.0 years) were used to measure(More)
Salivary duct carcinoma (SDC) is a rare, extremely aggressive malignancy arising in the ductal epithelium of the salivary glands. Radiologic investigations of and reports on minor salivary gland SDC are very rare. We present 3 cases of SDC of the palate with the attendant radiologic features and clinicopathologic findings. We also review English-language(More)
BACKGROUND A paucity of reports exist on the use of botulinum toxin type A injections as an alternative noninvasive treatment for masseteric hypertrophy. OBJECTIVE To evaluate the effects of botulinum toxin type A on masseteric hypertrophy using computed tomography. METHODS Percutaneous intramuscular injections of botulinum toxin type A of 30 U per side(More)
OBJECTIVES We evaluated the radiographic changes to the operational sites after orthognathic surgery by using fractal analysis. STUDY DESIGN Panoramic radiographs from 35 patients who underwent orthognathic surgery on the mandible without any complications during the osseous healing process were selected. The radiographs taken before the operation (stage(More)
PURPOSE This study was performed to analyze human maxillary and mandibular trabecular bone using the data acquired from micro-computed tomography (micro-CT), and to characterize the site-specific microstructures of trabeculae. MATERIALS AND METHODS Sixty-nine cylindrical bone specimens were prepared from the mandible and maxilla. They were divided into 5(More)
PURPOSE The purpose of this study was to estimate the frequency of and describe the clinical characteristics and complications of patients with nonsyndromic multiple mandibular supernumerary premolars. PATIENTS AND METHODS Among 110,500 patients seen between July 2003 and January 2007, 32 cases of multiple (2 or more) mandibular supernumerary premolars(More)
The medical records of 3 patients who visited our hospital with preauricular pain and limited jaw movement were retrospectively reviewed. All were clinically evaluated, diagnosed through the use of conventional radiographs, and initially treated as having temporomandibular disorders (TMD). However, their symptoms did not improve and even increased or facial(More)
PURPOSE The aim of this study was to provide sex-matched three-dimensional (3D) statistical shape models of the mandible, which would provide cephalometric parameters for 3D treatment planning and cephalometric measurements in orthognathic surgery. MATERIALS AND METHODS The subjects used to create the 3D shape models of the mandible included 23 males and(More)
PURPOSE It has been suggested that primary implant stability plays an essential role in successful osseointegration. Resonance frequency analysis (RFA) is widely used to measure the initial stability of implants because it provides superior reproducibility and non-invasiveness. The purpose of this study is to investigate whether the fractal dimension from(More)
Accurate simulation and evaluation of mandibular movement is fundamental for the analysis of functional changes and effects of the mandible and maxilla before and after surgical treatments. We applied principal axes of inertia to the three-dimensional (3D) trajectories generated by patient-specific simulations of TMJ movements for the functional evaluations(More)