Observing Anterior Crowding In a Population Living a Century Ago
DOI:
https://doi.org/10.5195/d3000.2016.52Abstract
Purpose: To observe the frequency of mandibular anterior crowding in a population who lived during the nineteenth century and compare the rate of occurrence in the current population, which is claimed to be two-thirds of adults experiencing crowding by early adulthood. Materials and Methods: The School of Dental Medicine at the University of Pittsburgh possesses a collection of skulls of individual’s likely living in the northeast United States during the late 19th century and early 20th century. Of this skull collection, 29 skulls were evaluated for the presence of mandibular anterior crowding. Results: 55% of the evaluated mandibular anterior arches were positive for mandibular anterior crowding. 57% of the male specimens were positive for anterior crowding, while 50% of the females were recorded to have anterior crowding. These frequencies are lower than the one suggested for the current live population in the United States. Conclusion: From this sample of the population living a century ago, there was a lower prevalence of anterior crowding (55%) than the research suggested two-thirds of adults.
Riferimenti bibliografici
Late mandibular incisor crowding. American Association of Orthodontics: Orthodontic Dia-logue. 1999;11(1).
Caries and periodontal disease: insight from two US popu-lations living a century apart. Rose E, Vieira AR. Oral Health Prev Dent. 2008;6(1):23–8. PMID:18399304
Orthodontics. Part 3: Pa-tient assessment and examination II. Roberts-Harry D, Sandy J. Br Dent J. 2003 Nov 22;195(10):563–5. PMID:14631426
Goldberg AI. An evalua-tion of mandibular anterior crowd-ing as it relates to facial diver-gence in treated and untreated subjects. 2012; A thesis presented to the Graduate Faculty of Saint Louis University in partial fulfill-ment of the requirements for the degree of Master of Science in Dentistry.
The effect of extraction of third molars on late lower inci-sor crowding: a randomized con-trolled trial. Harradine NW, Pear-son MH, Toth B. Br J Orthod. 1998 May;25(2):117-22. PMID:9668994
Mandibular anterior bony support and incisor crowd-ing: Is there a relationship? Uysal T, Yagci A, Ozer T, Veli I, Ozturk A. Am J Orthod Dentofacial Orthop. 2012 Nov;142(5):645–53. PMID:23116505
##submission.downloads##
Pubblicato
Fascicolo
Sezione
Licenza
Authors who publish with this journal agree to the following terms:
- The Author retains copyright in the Work, where the term “Work” shall include all digital objects that may result in subsequent electronic publication or distribution.
- Upon acceptance of the Work, the author shall grant to the Publisher the right of first publication of the Work.
- The Author shall grant to the Publisher and its agents the nonexclusive perpetual right and license to publish, archive, and make accessible the Work in whole or in part in all forms of media now or hereafter known under a Creative Commons Attribution 4.0 International License or its equivalent, which, for the avoidance of doubt, allows others to copy, distribute, and transmit the Work under the following conditions:
- Attribution—other users must attribute the Work in the manner specified by the author as indicated on the journal Web site;
- The Author is able to enter into separate, additional contractual arrangements for the nonexclusive distribution of the journal's published version of the Work (e.g., post it to an institutional repository or publish it in a book), as long as there is provided in the document an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post online a prepublication manuscript (but not the Publisher’s final formatted PDF version of the Work) in institutional repositories or on their Websites prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the Publisher-assigned DOI (Digital Object Identifier) and a link to the online abstract for the final published Work in the Journal.
- Upon Publisher’s request, the Author agrees to furnish promptly to Publisher, at the Author’s own expense, written evidence of the permissions, licenses, and consents for use of third-party material included within the Work, except as determined by Publisher to be covered by the principles of Fair Use.
- The Author represents and warrants that:
- the Work is the Author’s original work;
- the Author has not transferred, and will not transfer, exclusive rights in the Work to any third party;
- the Work is not pending review or under consideration by another publisher;
- the Work has not previously been published;
- the Work contains no misrepresentation or infringement of the Work or property of other authors or third parties; and
- the Work contains no libel, invasion of privacy, or other unlawful matter.
- The Author agrees to indemnify and hold Publisher harmless from Author’s breach of the representations and warranties contained in Paragraph 6 above, as well as any claim or proceeding relating to Publisher’s use and publication of any content contained in the Work, including third-party content.
Revised 7/16/2018. Revision Description: Removed outdated link.