Nannelli, P [Orthodontic extrusion and periodontal alignment. Indications and theoretical considerations. I]. [electronic resource] - Dental Cadmos May 1987 - 59-64, 67 p. digital Publication Type: Journal Article ISSN: 0011-8524 Subjects--Topical Terms: HumansPeriodontium--anatomy & histologyTooth Diseases--therapyTooth Fractures--therapyTooth Movement Techniques--methods