Comparison of the functional occlusal plane in adults with class III malocclusion showing open bite and non-open bite.
A retrospective study of lateral cephalograms of 24 Japanese adults with Class III malocclusion was made in order to compare the angles of the horizontal plane between open bite and non-open bite cases. The following results were obtained: i) There was no significant difference in the angle of the NF-upper occlusal plane between the open bite and non-open bite groups. ii) There were significant differences between the two groups in the angle of the SN-upper and lower occlusal planes, the FH-upper and lower occlusal planes and MP-lower occlusal plane. There was also a significant difference between the groups in the distance from the Xi point to the upper occlusal plane. iii) In both the open bite and non-open bite groups there was a wide variation in occlusal plane angles, compared with normal cases.
Kuno
T
T
Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan.
Hasegawa
M
M
Okaue
M
M
Matsunaga
S
S
Matsumoto
M
M
Hori
M
M
Tanaka
H
H
Shimoyama
T
T
Takahashi
Y
Y
D000293:Adolescent; D000328:Adult; D002508:Cephalometry; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008297:Male; D008313:Malocclusion, Angle Class III / Q000473:pathology* / Q000601:surgery; D011378:Prognathism / Q000473:pathology* / Q000601:surgery; D011379:Prognosis; D012189:Retrospective Studies