[Importance of posterior tooth-to-denture base discrepancy in the development of skeletal open-bite malocclusion].
This paper describes the relationship between the development of skeletal open-bite malocclusion and the tooth-to-denture base discrepancy. The cases which have a severe skeletal open-bite malocclusion are presented to evaluate the causing factor of the anterior open-bite. The anterior open-bite was associated with inferiorly positioned maxillary molars caused by the squeezing out effect of the tooth-to-denture base discrepancy, especially those in posterior part of dentition (posterior discrepancy), which provided a less steep maxillary occlusal plane in the denture frame. It was suggested that the posterior discrepancy induced a descending movement of the posterior teeth followed by a change of the occlusal plane and this effect of the posterior discrepancy was important factor in developing anterior open-bite malocclusion.
Sato
S
S
Department of Orthodontics, Kanagawa Dental College.
Sasaguri
K
K
Kamoi
S
S
Goto
M
M
Suzuki
Y
Y
D002508:Cephalometry; D003724:Dental Arch / Q000254:growth & development; D006801:Humans; D008310:Malocclusion / Q000209:etiology*; D008445:Maxillofacial Development; D008963:Molar