In 1921, when the School Dental Service was established, New Zealand embarked on a unique social experiment: improving the terrible state of the nation's teeth. Set up by veterans of the First World War, the service -- focused on 'battling Bertie Germ' -- was run like a military operation and the all-female dental nurses were treated like foot-soldiers: underpaid, overworked and poorly resourced. Eventually they rebelled. In this lively history,...