Measurements are taken at the First Molars only. Bill thinks that the measure of a mouth guard's effectiveness is how well it protects all the teeth. He says a metal dental model is irrelevant for testing what happens to human teeth, and that basically ineffective mouth guards can pass the test as written. Mr. Whitney also had an issue with 2 figures that were added to the draft without dimensioning. Dr. Henry Cross, the technical contact for Item 10, was not present, but responded in writing.
Mouth guards follow, and are tested per their respective mouth guard group.
Testing mouth guards on a metal teeth model is no more irrelevant than testing helmets on epoxy or magnesium headforms. Many commercially available mouth guards do not cover beyond the first molar, so this test would effectively measure their capabilities. All changes to figures were approved in previous ballots. Dimensions are from a standard model or are in the text. Dave Halstead noted that the ADA is working on a standard for mouth guards.