Publications by authors named "Yasunori Hotta"

Article Synopsis
  • An oroantral communication (OAC) can occur after tooth extraction, and in this case, a 59-year-old female developed a bone defect leading to an oroantral fistula after the extraction of tooth #16.
  • A lateral window approach was used to address the fistula and perform a sinus floor elevation for future implant placement, successfully connecting the bone defects and preserving the Schneiderian membrane.
  • Six months later, a follow-up scan showed closure of the fistula and elevation of the sinus floor, leading to the placement of three dental implants, with positive results observed during follow-up assessments.
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Objectives: Medically, anticancer drugs contamination leading to human exposure has become an issue. The urine of patients receiving chemotherapy contains anticancer drugs. If urine containing anticancer drugs is excreted, the anticancer drugs are scattered around the toilet bowl, then adhere to slipper soles and spread.

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Background: Certain amount of anticancer drugs is excreted in the urine of patients receiving anticancer drugs, and urinary scattering including anticancer drugs at excretion has become a route of anticancer drug contamination. Therefore, we developed an active carbon sheet (HD safe sheet-U) that prevented diffusion by adsorbing anticancer drugs including that excreted in urine. The present study conducted a performance evaluation of this sheet.

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A single-tooth implant restoration is generally performed for maxillary single-first-molar replacement. If the interdental space between the second premolar and the second molar is large enough, a double-implant placement can be performed to avoid creating mesiodistal cantilever and to distribute occlusal loading forces.If there is not adequate space for a double-implant placement to be performed mesiodistally along the crest of the alveolar ridge line, they should be placed along a diagonal line offset lingually to increase the space.

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Objective: Secular change in marginal bone loss (MBL), which is the index adopted for implant success criteria, has often been used to evaluate risk factors. However, the need to revise these criteria has recently been indicated due to rapid developments in implant treatment. The purpose of this study was to evaluate risk factors by analyzing MBL with an alternative statistical method.

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A patient with a totally edentulous maxilla and a seVere Class III intermaxillary relationship in the anterior region was treated by implants. In the mandible, there were 10 teeth between the second premolars. The inclination and width of the maxillary anterior residual bone were measured on cephalometric X-ray film obtained before treatment.

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