office procedure如何翻译？

This office procedure consists of local anesthetic infiltration, a 1.5 to 2.0 cm incision just through the lower lip mucosal epithelium, and careful dissection of 4 or 5 minor salivary glands, one at a time, from the subepithelial connective tissue (12).

该手术包括局麻药浸润，在下唇粘膜上皮切开1.5 - 2.0 cm的切口，仔细地从上皮下结缔组织中剥离4或5个小唾液腺，每次一个(12)。

问题：

1.         office procedure如何翻译？

2.         “剥离4或5个小唾液腺，每次一个”，不是切一块，而是切4-5块？肉眼能看到小唾液腺吗？