外观正常的环状病损。
结论：细菌感染是造成种植体尖周病损的重要原因。
Conclusion: The bacterial infection was considered to be an important cause of IPL.
损是一种多发病及常见病，在运动员和普通人群中都有较高的发生率。
The incidence of lumbar muscle strain in athlete and normal people are both high.
损是一种多发病及常见病，在运动员和普通人群中都有较高的发生率。
The incidence of lumbar muscle strain in athlete and normal people are both high.
应用推荐