A 4 year follow-up study of alveolar bone height influenced by two dissimilar Class II amalgam restorations.
Fifty-four paired, approximal amalgam fillings, extended (E) versus unextended (NE) were placed in forty-three patients and followed up to 4 years. Yearly measurements between the alveolar crest and (a) the apical margin of the fillings (E, NE), and (b) the cemento-enamel junction of the control group, were performed using bite-wing radiographs joined to a translucent grid magnified ten-fold. The rate of alveolar crest resorption was similar for the control (C) and the unextended filling (NE) and reached 0.45 mm after 4 years of follow-up. The resorption of the alveolar crest under the extended (E) filling was significantly higher and reached 0.80 mm after 4 years (P less than 0.001).
D000293:Adolescent; D000328:Adult; D000539:Alveolar Process / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D001862:Bone Resorption / Q000209:etiology; D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000379:methods; D003793:Dental Restoration, Permanent; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006801:Humans; D011859:Radiography
D003723:Dental Amalgam