Effects of rehabilitation on the jaws and teeth of protein-deficient and calorie-deficient pigs.
The growth of the jaws and teeth was examined in pigs which had been fed protein-deficient and calorie-deficient diets for the first year of life and thereafter allowed unlimited food. After 2 years of rehabilitation, jaw size had almost reached that of well-fed controls, although in the mandible the labial alveolar process remained abnormally proclined and in both jaws the crowns of third permanent molars were smaller than in control animals. Calorie-deficient pigs did not recover as well as did protein-deficient animals. Pigs fed a calorie-deficient diet for the first 2 years of life before rehabilitation also made a good recovery and were only slightly smaller in most dimensions than those undernourished for 1 year and then rehabilitated. Despite the excellent recovery in jaw dimensions, some malposition of teeth persisted after rehabilitation, especially in animals which had been undernourished for 2 years.
D000818:Animals; D003677:Deficiency Diseases / Q000503:physiopathology* / Q000534:rehabilitation*; D007568:Jaw / Q000033:anatomy & histology; D008445:Maxillofacial Development; D011488:Protein Deficiency / Q000503:physiopathology / Q000534:rehabilitation*; D013552:Swine; D014070:Tooth / Q000254:growth & development*