69 research outputs found
Prediction of individual mandibular changes induced by functional jaw orthopedics followed by fixed appliances in Class II patients
Friction produced by types of elastomeric ligatures in treatment mechanics with the preadjusted appliance
Forces in the presence of ceramic versus stainless steel brackets with unconventional vs conventional ligatures
An improved version of the cervical vertebral maturation (CVM) method for the assessment of mandibular growth
Early predictive variables for upper canine impaction as derived from posteroanterior cephalograms
Glenoid fossa position in Class II malocclusion associated with mandibular retrusion
Abstract
Objective: To assess the position of the glenoid fossa in subjects with Class II malocclusion associated with mandibular retrusion and normal mandibular size in the mixed dentition.
Materials and Methods: A sample of 30 subjects (16 male, 14 female), age 9 years ± 6 months, with skeletal and dental Class II malocclusion associated with mandibular retrusion, normal skeletal vertical relationships, and normal mandibular dimensions, was compared with a matched group of 37 subjects (18 male, 19 female) with skeletal and dental Class I relationships. The comparisons between the Class II group and the control group on the cephalometric measures for the assessment of glenoid fossa position were performed by means of a nonparametric test for independent samples (Mann-Whitney U-test, P < .05).
Results: Subjects with Class II malocclusion presented with a significantly more distal position of the glenoid fossa, when compared with the control group as measured by means of three parameters (GF-S on FH, GF-Ptm on FH, and GF-FMN).
Conclusions: A posteriorly displaced glenoid fossa is a possible diagnostic feature of Class II malocclusion associated with mandibular retrusion. An effective cephalometric measurement to evaluate glenoid fossa position is the distance from the glenoid fossa to the frontomaxillonasal suture (GF-FMN)
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