Evaluation of the relationship between anterior and posterior functionally disclusive angles. Part II: Study of a population.
The lateral and protrusive anterior and posterior disclusive angles were recorded and measured by using a newly developed method (part I) on a population of 50 subjects (mean age 27.2 years). All of the subjects had natural anterior teeth, 45 had a clinically acceptable anterior guidance, and the remaining five had a partial (unilateral) or total lack of anterior guidance. A statistically significant correlation between the anterior and posterior disclusive angles was not found either in the entire population (n = 50) or in the stratum of the population that consisted of subjects with a clinically acceptable anterior guidance (n = 45). The Angle class of occlusion or anterior deep bite malocclusion were not identified as possible confounders or effect modifiers. This study suggested that the intra-articular tissues of the temporomandibular joint played a significant role in the relationship of their osseous components. Practical guidelines to determine anterior guidance could be established by using population means.
Pelletier
L B
LB
Harvard School of Dental Medicine, Boston, Mass.
Campbell
S D
SD
D000328:Adult; D002508:Cephalometry; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008297:Male; D008310:Malocclusion / Q000453:epidemiology; D013704:Temporomandibular Joint / Q000033:anatomy & histology*; D014481:United States / Q000453:epidemiology