Characteristics of protrusive and lateral excursions of the mandible in children with the primary dentition

Hayasaki,; Yamasaki,; Nishijima,; Naruse,; Nakata,

doi:10.1046/j.1365-2842.1998.00236.x

Cited by 1 publication

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“…Many points about relationships between occlusion and mandibular movement of adults have thus been clarified. However, few studies have reported mandibular movements of children, and these have focused on children with normal occlusion in the primary dentition (Gibbs et al ., 1982; Yamasaki et al ., 1992; Hayasaki et al ., 1998). No reports about children with malocclusion in the primary dentition have been reported as far as we are aware.…”

Section: Introductionmentioning

confidence: 99%

Incisal and condylar paths during habitual mouth opening movement of children with anterior reverse bite in the primary dentition

Nagata

Yamasaki

Hayasaki

et al. 2002

J of Oral Rehabilitation

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The purpose of this study was to evaluate whether the path of habitual mouth opening was influenced by anterior reverse bite malocclusion in children. Two groups of children with the primary dentition were chosen: (i) 10 children with anterior reverse bite (reverse bite group) and (ii) 10 with normal occlusion (normal occlusion group). Their habitual mouth opening movements were measured by an opto-electronic movement-analysing system with 6 d.f. at a sampling rate of 100 Hz. These movements were projected on the sagittal plane at the incisal and condylar points. To characterize the path, we used the angles between the path and the horizontal plane. In the initial stage of opening, the incisal path of the reverse bite group was displaced more posteriorly from the intercuspal position than that of the normal occlusion group. However, as opening continued, the direction of the path of the reverse bite group was more anterior than those of the normal occlusion group. During the entire opening movement, the condylar path of the reverse bite group was flatter than those of the normal occlusion group. In conclusion, it was demonstrated that anterior reverse bite in the primary dentition clearly affects the paths of habitual opening movements.

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Section: Introductionmentioning

confidence: 99%