J. Cobo et al., DENTOALVEOLAR STRESS FROM BODILY TOOTH MOVEMENT AT DIFFERENT LEVELS OF BONE LOSS, American journal of orthodontics and dentofacial orthopedics, 110(3), 1996, pp. 256-262
This study was undertaken to determine the stress that appears in the
tooth, the periodontal ligament, and tile alveolar bone, when a couple
and horizontal forces were applied to obtain the bodily movement of a
lower digitalized canine and its changes depending on the degree of l
oss of the supporting bone. The analysis of tensions was carried out b
y means of the finite element method (FEM) with no bone loss and after
reducing the support bone 2, 4, 6, and 8 mm. False color three-dimens
ional images indicating intensity of stress (tensile and compressive)
and extension are generated. After the application of the forces in th
e model without bone loss, a rather uniform distribution of stress is
observed. When the bone loss is 2 mm, an increased stress in the level
s next to the alveolar crest is already apparent. After 4, 6, and 8 mm
of bone support reduction, a change of the sign and an increment of t
he magnitude of stress in the lowest levels occurs.