Effects of increased occlusal vertical dimension on the jaw-opening reflex in adult rats

Alteration of occlusal vertical dimension induces signs of neuroplastic changes in corticomotor control of masseter muscles: Preliminary findings

“…Reorganisation may occur in response to novel experiences and environmental changes; alterations in OVD are perhaps not significant enough to induce such reorganisation reflected by motor cortex mapping . Animal studies have suggested that motor cortex reorganisation induced by skill task training is transient and cannot be detected after a longer period (ie 4 weeks) . Therefore, in the present study, as the TMS recordings were only observed at the baseline and the end of the intervention (ie four weeks), it could be speculated that the reorganisation might have occurred only for a transient period during the course of the four weeks of intervention.…”

“…Therefore, in the present study, as the TMS recordings were only observed at the baseline and the end of the intervention (ie four weeks), it could be speculated that the reorganisation might have occurred only for a transient period during the course of the four weeks of intervention. Furthermore, it can be debated that changes may also have occurred in other jaw muscles, for example the jaw‐opening muscles or the perioral muscles, or at the level of CPGs. However, the TMS technique used in the present study does not allow for a precise delineation of the subcortical regions that may be associated with neuroplastic changes in response to an altered peripheral input .…”

Two-year observation of the occlusal vertical dimension after bite raising via cone-beam computerized tomography: A preliminary study

“…et al ., who studied the lateral cephalometric radiographs of twenty patients with anterior splints over sixty-seven months, also reported no relapse or rapid return to baseline 19 . Other scholars further demonstrated the adaptability of the masticatory muscles and neural system, implying that the OVD is variable and can be sustained within rational limits 1,27–29 . Empirical considerations regarding the fixed OVD may actually repudiate the variable nature of the dentoalveolar complex 30 .…”

“…The compensation for OVD loss has also been suggested to reflect tooth movement without bone remolding 10,11 . Mostly, the masticatory muscles and neural system are sufficiently flexible to adapt to the newly changed OVD in the first several weeks 27–29 . However, although compensations occurs, it may not derive from variation in APHs.…”

O ensino de odontologia garante o conhecimento necessário da oclusão e da articulação temporomandibular?

“…Um exemplo clínico muito estudado e discutido é o aumento da dimensão vertical de oclusão e suas consequências para os músculos da mastigação e o que isso implica no equilíbrio do sistema estomatognático. Quando perdida pode causar grandes parafunções, mas se restaurada, agregando os conhecimentos sobre oclusão, causa melhora substancial ao paciente, sendo o tratamento de algumas doenças como a disfunção temporomandibular (Makiguchi et al, 2016). É notável, nos estudos mais recentes sobre oclusão, a mudança de perspectiva na relação entre oclusão e articulação temporomandibular, que mostram que a primeira é afetada pela segunda através de suas anormalidades (Caldas, Conti, Janson, & Conti, 2016).…”