Cherry trees, scientifically known as *Prunus spp.* (or *Cerasus spp.*), are widely recognized for their beautiful blossoms and ornamental value. Common names include cherry tree, wedge, and Jingtao. These trees belong to the genus *Prunus*, which is native to the temperate regions of the northern hemisphere. China, particularly its southwest region, is home to the greatest diversity of species, while cultivated varieties can be found all over the world.
Among the many types, Japanese cherry trees (*Prunus serrulata*) are especially renowned. They are adaptable to a wide range of climates and soils, thriving in well-drained conditions and showing resilience to cold, drought, and sunlight. Most cherry trees are deciduous, with oval or spherical crowns, alternate leaves that have glandular sawtooth edges, and flowers that appear singly on branches or in clusters of 3 to 6, often arranged in umbel-like inflorescences. The flowers bloom either at the same time as the leaves or shortly after, typically in April, and many cultivars feature double petals. The fruits are red or black, ripening between May and June.
Propagation methods include sowing, grafting, and cuttings. When sowing seeds, it's important to keep the embryos moist, and they should be planted either immediately or using a wet sand stratification method in the following spring. Common pests and diseases include aphids, moths, scale insects, white feather disease, and crown gall.
Cherry blossoms are celebrated for their beauty and are a popular attraction in both China and Japan. Their delicate blooms create breathtaking landscapes, whether planted in large groups to form a "flower bud" effect or used in smaller arrangements to add color to green spaces. They also make excellent street trees, hedges, or even bonsai specimens.
Some commonly cultivated ornamental species include:
1. **Prunus ferruginea**: A deciduous tree reaching 15–25 meters tall, with dark chestnut-brown bark and ovate or obovate leaves with awned margins. Flowers are white or pink, 2.5–4 cm in diameter, blooming in April.
2. **Prunus lannesiana** (Japanese Cherry): About 10 meters tall, with pale gray bark and obovate leaves with long, awn-like teeth. Flowers are pink or nearly white, fragrant, and appear in clusters of 2–5 during April.
3. **Prunus subhirtella**: A small tree up to 5 meters high, with striped bark and brown branchlets. Leaves are obovate or ovate-lanceolate, and flowers are pink, appearing in clusters of 2–5 before the leaves emerge in spring.
4. **Prunus sargentii**: Reaching 12–20 meters, this species has smooth chestnut-brown bark and elliptic-obovate leaves. Its pink flowers appear in clusters of 2–4, blooming from March to April.
5. **Prunus cerasoides** (Yunnan Cherry): A 10-meter-tall tree with brown bark and purple-brown branchlets. Leaves are elliptic-ovate or obovate, and flowers are pink to dark red, appearing in clusters of 2–5 from February to March.
6. **Prunus majestica** (Winter Cherry): A tall tree up to 25 meters, with light brown bark and green branchlets. Leaves are long elliptic or lanceolate, and it blooms with pink flowers from November to January.
In Japan, cherry blossoms are not only a natural wonder but also the national flower, symbolizing beauty, transience, and renewal. Whether enjoyed in parks, along rivers, or in urban settings, cherry trees continue to captivate people around the world with their elegant and fleeting blooms.
Maxillofacial Fixation
Maxillofacial fixation system -- micro-plate for cranial and maxillofacial fracture fixation, designed for the surgical treatment of maxillofacial trauma fractures, suitable for the forehead, nose, orbit, zygomatic, maxillary region, and pediatric craniofacial bones.
The system is an orthopedic surgical instrument for neurosurgical tools. The maxillofacial fixation system includes micro-plates, straight plates, L-shaped plates, T-shaped plates, Y-shaped plates, double Y-shaped plates, H-shaped plates for cranial and maxillofacial fractures. The product range is complete, covering three-dimensional titanium mesh, self-drilling rotary bone screws, anatomical orbital floor plates, orthodontic nails, etc. However, the facial anatomical structure is special, and the screw plate needs to be placed away from the fracture line and avoid important anatomical structures such as nerves and teeth roots. Therefore, the specifications of the screw plate system are required to be as diverse as possible in order to be used in different bone structures, such as different radian, length, and number of screw holes. The bone plates forcranial and maxillofacial fractures are mainly divided into 1.5mm, 2.0mm and 2.4mm systems.
Titanium (including pure titanium and titanium alloy) is the most common material for hard tissue implants. Its elastic modulus and tensile strength are higher than those of human bone, and it is better than other metal materials such as nickel-titanium alloy and cobalt-chromium alloy in terms of biocompatibility and corrosion resistance. Our maxillofacial plate is made of titanium, and the self-tapping screws are mainly made of titanium alloy.
Jaw fractures include maxillary fractures and mandibular fractures. According to whether the fracture trauma is exposed, it can be divided into open fracture and closed fracture. Trauma is the most common cause of jaw fracture, which usually includes hit, traffic injury, fall injury, firearm injury, and a few iatrogenic injuries. All are caused by external forces acting directly or indirectly on the maxillofacial region. With the popularization of motor vehicles, the proportion of jaw fractures caused by traffic accidents has increased year by year, which has become the main cause of jaw fractures. In addition, neoplastic lesions in the maxillofacial region often lead to pathological jaw fractures.
In summary, maxillofacial fixation system has been widely used in clinical maxillofacial surgery, plastic surgery and ENT, and has a relatively mature market.
Titanium Plate,Rectangular Plate,orthognathic surgery,oral and maxillofacial
Jiangsu Aomed Ortho Medical Technology Co.,Ltd , https://www.aomedortho.com