Teo, Terry Kuo-Yih Lower first permanent molars: developing better predictors of spontaneous space closure. [electronic resource] - European journal of orthodontics Feb 2016 - 90-95 p. digital Publication Type: Journal Article ISSN: 1460-2210 Standard No.: 10.1093/ejo/cjv029 doi Subjects--Topical Terms: AdolescentBicuspid--diagnostic imagingChildFemaleHumansMaleMolar--diagnostic imagingMolar, Third--diagnostic imagingOrthodontics, Corrective--methodsPrognosisRadiography, Dental--methodsRetrospective StudiesTooth Eruption--physiologyTooth Extraction--methodsTooth Migration--diagnostic imaging