title: The depth of the lingual fossa in permanent incisors of Norwegians. I. Method of measurement, statistical distribution and sex dimorphism.
abstract: The depth of the incisor lingual fossa in permanent extracted incisors and plaster casts of Norwegians was examined. It was shown that plaster casts are well suited for measurements of lingual fossa depth, and that the measurements can be performed with great accuracy. Skewness values showed the symmetry of the distribution to decrease with decreasing mean lingual fossa depth. Kurtosis was found small in maxillary incisors, in mandibular outside the limits for normal theory. The distribution of the depth of the lingual fossa cannot generally be described as normal. No sex differences were found. The inheritance of this trait in Norwegians is probably not sex linked.
authors.affiliation: Department of Anatomy, Dental Faculty. L’nwersrty of Oslo. P 0 Box 1052,Blindern, Oslo 3. Norway.
authors.forename: I H
authors.initials: IH
authors.lastname: Aas
authors.forename: S
authors.initials: S
authors.lastname: Risnes
mesh_terms: D005260:Female; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology*; D008297:Male; D009664:Norway; D009811:Odontometry; D012737:Sex Factors; D016008:Statistical Distributions