Treatment of malocclusion of the teeth : Angle's system.

  • Angle, Edward H. (Edward Hartley), 1855-1930.
Date:
1907
Catalogue details

Licence: In copyright

Credit: Treatment of malocclusion of the teeth : Angle's system. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    occlusion the labial and buccal surfaces of the teeth of the upper jaw slightly overhang those of the lower. The mesio-buccal cusp of the upper first molar is received in the buccal groove of the lower first molar. The teeth pos- terior to the first molars engage with their antagonists in a precisely similar way; those anterior interlock with one another in the interspaces until the incisors are reached; of these the upper usually overhang the lower about one-third the length of their crowns, though the length of overbite varies, being greater in the teeth indica- ting the bilious and nervous temperaments, and less in the sanguineous and lymphatic types. The upper central incisor being broader than the lower, it necessarily extends beyond it distally, overlapping in addition about one-half of the lower lateral incisor; the upper lateral occludes with the remaining portion of this tooth and with the mesial incline of the lower canine; the mesial incline of the upper canine occludes with the distal incline of the lower, the distal incline of the upper occlu- ding with the mesial incline of the buccal cusp of the lower first premolar. In the same order the series of buccal cusps of the premolars occlude-the mesial incline of each upper occluding with the distal incline of the correspond-, ing lower tooth. The distal incline of the second upper premolar occludes with the mesial incline of the mesio-buccal cusp ot the lower first molar. The mesial incline of the mesio-buccal cusp of the upper first molar occludes with the distal incline of the mesio-buccal cusp of the lower first molar; the dis- tal incline of the mesio-buccal cusp of the upper first molar occludes with the mesial incline of the disto-buccal cusp of the lower first molar; the mesial incline of the disto^ buccal cusp of the upper first molar occludes with the distal incline of the disto-buccal cusp of he lower first molar, and the distal incline of the disto-buccaj cusp of the upper first molar occludes with the mesial mclme ot