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关于牙槽骨的吸收,曾定义为:“一种由物理和生理法则所控制的复杂的多因素口腔疾病。”本病在病因学、治疗学和预防方面几乎没有什么大进展。但事实上牙齿被拔除后牙槽骨呈进行性降低,且为不可逆性。据估计,牙齿丧失后留下的残余牙槽嵴每年平均降低0.5mm。目前已知预防牙槽嵴丧失的唯一可靠方法就是防止牙齿丧失。复盖义齿是通过保留作或来作过根管治疗的天然牙而保持牙槽骨,制作的义齿直接复盖于这些天然牙上。遗憾的是牙周病,龋病和必需的费用给复盖义齿带来了很多麻烦。由于这些缺点,人们寻求更简使的牙根
Absorption of alveolar bone has been defined as “a complex, multifactorial oral disease controlled by physical and biological laws.” There is little progress in the etiology, treatment, and prevention of this disease. However, in fact, the tooth is removed after the alveolar bone progressive decline, and is irreversible. It is estimated that the residual alveolar ridge remaining after tooth loss is reduced by an average of 0.5 mm per year. The only reliable method currently known to prevent loss of alveolar ridge is to prevent tooth loss. The overdenture is the alveolar bone that is maintained by retaining the natural teeth that have been or have undergone root canal treatment. Dentures made are directly applied to these natural teeth. Sadly, periodontal disease, dental caries and the necessary expenses have caused a lot of trouble for the overdenture. Because of these shortcomings, people seek simpler roots