IntroductionWind instrument players sometimes suffer from erosion of the mucous membrane of the lip.This is caused by the action and pressure of the mouthpiece of the wind instrument against teeth.To address this problem, a lip shield is fitted over the dental arch to prevent direct contact between the lips and teeth.However, there are a few studie

Farmers are often overlooked and undervalued as sources of innovation, but can be powerful drivers of ingenuity and development.We evaluate historical developments in the Australian subterranean clover seed-production industry as a case study of farmer-driven innovation.Subterranean clover seed machinery patents (75% of which were patented by farme