Saving a hopeless tooth with a four-wall bone defect: A case report.

Background: Recombinant human fibroblast growth factor-2 (rhFGF-2) has been shown to effectively promote the formation of new periodontal tissues, and its efficacy has been demonstrated in clinical settings. Moreover, the clinical and radiographic outcomes in the treatment of periodontal infrabony defects can be improved by using rhFGF-2 in combination with a bone substitute. Here, we present a case of four-wall bone defect in a tooth treated by combination regenerative therapy using rhFGF-2 and beta-tricalcium phosphate (β-TCP).

Quantum collective motion of macroscopic mechanical oscillators.

Collective phenomena arise from interactions within complex systems, leading to behaviors absent in individual components. Observing quantum collective phenomena with macroscopic mechanical oscillators has been impeded by the stringent requirement that oscillators be identical. We demonstrate the quantum regime for collective motion of = 6 mechanical oscillators, a hexamer, in a superconducting circuit optomechanical platform.

Osteoporosis screening using X-ray assessment and osteoporosis self-assessment tool for Asians in hip surgery patients.

Objectives: As many patients with osteoporosis remain undiagnosed, we aimed to develop a simple method to efficiently screen for osteoporosis using a combination of anteroposterior hip X-ray assessment and the Osteoporosis Self-Assessment Tool for Asians (OSTA), which is calculated as (body weight - age) × 0.2.

Methods: One hundred Japanese women (age: 73 ± 11 years, body weight: 54.

Brain-derived neurotrophic factor promotes bone regeneration in a canine model of peri-implantitis.

Purpose: The present study aims to determine whether the brain-derived neurotrophic factor (BDNF)/high-molecular-weight hyaluronic acid (HMW-HA) complex could regenerate bone around implants lost due to peri-implantitis.

Methods: Dogs had their three premolars extracted, and three implants were placed on each side. After osseointegration, 3-0 silk threads were ligated around the healing abutment for 12 weeks.