Dental microwear in adult and still-born guinea pigs (Cavia porcellus).
Scanning electron microscope analyses of dental microwear showed that (1) microscopic striations are not caused by tooth-tooth contact, and (2) the model of striation formation used by Ryan (1979a, J. dent. Res. 58, 525-530; 1979b, Am. J. phys. Anthrop. 50, 155-168) to make directional interpretations of jaw movement is incorrect.
D000818:Animals; D006168:Guinea Pigs; D008409:Mastication; D008854:Microscopy, Electron; D013314:Stress, Mechanical; D014070:Tooth / Q000502:physiology / Q000648:ultrastructure*