PMID: 15248560Jul 14, 2004Paper

A morphological study on the classification of maxillary dental arches

Okajimas Folia Anatomica Japonica
Michiko NakatsukaShunji Kumabe

Abstract

To evaluate the morphology of dental arches, 62 (male: 36, female: 26) paired casts having normal dentitions and occlusion were selected from 396 (age: 18 to 26 years old; male: 257, female: 139) sets of dental study models. The maxillary dentitions were preliminarily classified as square, round-square, round and round V-shaped arches based on the conventional morphological descriptions. Midpoints of the incisor edge (I1(R), I1(L), I2(R), & I2(L), summits of the cuspids (CR & CL), buccal cusps of the premolars (P1(R), P1(L), P2(R), & P2L), mesial buccal cusps of the first and second molars (M1(R), M1(L), M2(R), & M2(L)), and the midpoint (A) of line I1(R)-I1(L) were designated as reference points. From A, let a vertical line intersected line M2(R)-M2(L) at reference point B. The line A-B intersected C(R)-C(L) at reference point E. We evaluated 1) the protrusion of the cuspids by (1) angle I2(R)-C(R)-P1(R) (angle R) + angle I2(L)-C(L)-P1(L) (angle L); 2) the curvature of the anterior teeth by (2) A-B/C(R)-C(L), (3) 180 degrees - angle C(R)-A-C(L), and (4) A-E/C(R)-C(L); 3) the length to width ratio of the dental arch by (5) A-B/M2(R)-M2(L); 4) the degree of roundness of the maxillary arch by estimation of (6) (rtheta5 - rtheta4)...Continue Reading

References

Mar 1, 1977·Kōkūbyō Gakkai zasshi. The Journal of the Stomatological Society, Japan·M Iwabayashi
Sep 1, 1972·Journal of Dental Research·R H Biggerstaff
Aug 1, 1969·American Journal of Orthodontics·J H Currier
Nov 1, 1970·American Journal of Physical Anthropology·C L LavelleM C Hamilton
Jan 1, 1980·The International Journal of Biochemistry·D J HeafJ Glover
May 1, 1981·American Journal of Orthodontics·P D Sampson

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Citations

Oct 11, 2005·Okajimas Folia Anatomica Japonica·Shunji KumabeGi-Seup Kim
Jul 28, 2012·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Jin-Gang Jiang, Yong-De Zhang
Sep 30, 2010·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Yong-de ZhangYong Wang
Oct 27, 2016·Surgical and Radiologic Anatomy : SRA·Pinar CagimniZuhal Kazak

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