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Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study
STATEMENT OF PROBLEM: When reconstructing the occlusal curvatures dentists often use a 4-inch radii arc as a rough standard based on Monson spherical theory. The use of an identical radius for the curve of Spee for all patients may not be appropriate because each patient is individually different. T...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062145/ https://www.ncbi.nlm.nih.gov/pubmed/27746596 http://dx.doi.org/10.4103/0972-4052.191290 |
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author | Surendran, Sowmya Velekkatt Hussain, Sharmila Bhoominthan, S. Nayar, Sanjna Jayesh, Ragavendra |
author_facet | Surendran, Sowmya Velekkatt Hussain, Sharmila Bhoominthan, S. Nayar, Sanjna Jayesh, Ragavendra |
author_sort | Surendran, Sowmya Velekkatt |
collection | PubMed |
description | STATEMENT OF PROBLEM: When reconstructing the occlusal curvatures dentists often use a 4-inch radii arc as a rough standard based on Monson spherical theory. The use of an identical radius for the curve of Spee for all patients may not be appropriate because each patient is individually different. The validity of application of this theory in the Indian population and the present study has been undertaken. AIMS AND OBJECTIVES: This study is an attempt to evaluate the curve of Spee and curve of Wilson in young Indian population using three dimensional analysis. This study compared the radius and the depth of right and left, maxillary and mandibular curves of Spee and the radius of maxillary and mandibular curves of Wilson in males and females. MATERIALS AND METHODS: The cusp tips of canines, buccal cusp tips of premolars and molars and palatal/lingual cusp tips of second molars of 60 maxillary and 60 mandibular casts were obtained. Three-dimensional (x, y, z) coordinates of the cusp tips of the molars, premolars, and canines of the right and left sides of the maxilla and mandible were obtained with three dimensional coordinate measuring machine. The radius and the depth of right and left, maxillary and mandibular curves of Spee and the radius of maxillary and mandibular curves of Wilson were measured by means of computer software Metrologic-XG. Pearson's correlation test and Independent t-test were used to test the statistical significance (α=.05). CONCLUSION: The values of curve of Spee and curve of Wilson in Indian population obtained from this study were higher than the 4 inch (100 mm) radius proposed by Monson. These findings suggest ethnic differences in the radius of curve of Spee and curve of Wilson. |
format | Online Article Text |
id | pubmed-5062145 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-50621452017-10-01 Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study Surendran, Sowmya Velekkatt Hussain, Sharmila Bhoominthan, S. Nayar, Sanjna Jayesh, Ragavendra J Indian Prosthodont Soc Original Article STATEMENT OF PROBLEM: When reconstructing the occlusal curvatures dentists often use a 4-inch radii arc as a rough standard based on Monson spherical theory. The use of an identical radius for the curve of Spee for all patients may not be appropriate because each patient is individually different. The validity of application of this theory in the Indian population and the present study has been undertaken. AIMS AND OBJECTIVES: This study is an attempt to evaluate the curve of Spee and curve of Wilson in young Indian population using three dimensional analysis. This study compared the radius and the depth of right and left, maxillary and mandibular curves of Spee and the radius of maxillary and mandibular curves of Wilson in males and females. MATERIALS AND METHODS: The cusp tips of canines, buccal cusp tips of premolars and molars and palatal/lingual cusp tips of second molars of 60 maxillary and 60 mandibular casts were obtained. Three-dimensional (x, y, z) coordinates of the cusp tips of the molars, premolars, and canines of the right and left sides of the maxilla and mandible were obtained with three dimensional coordinate measuring machine. The radius and the depth of right and left, maxillary and mandibular curves of Spee and the radius of maxillary and mandibular curves of Wilson were measured by means of computer software Metrologic-XG. Pearson's correlation test and Independent t-test were used to test the statistical significance (α=.05). CONCLUSION: The values of curve of Spee and curve of Wilson in Indian population obtained from this study were higher than the 4 inch (100 mm) radius proposed by Monson. These findings suggest ethnic differences in the radius of curve of Spee and curve of Wilson. Medknow Publications & Media Pvt Ltd 2016 /pmc/articles/PMC5062145/ /pubmed/27746596 http://dx.doi.org/10.4103/0972-4052.191290 Text en Copyright: © 2016 The Journal of Indian Prosthodontic Society http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Surendran, Sowmya Velekkatt Hussain, Sharmila Bhoominthan, S. Nayar, Sanjna Jayesh, Ragavendra Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title | Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title_full | Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title_fullStr | Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title_full_unstemmed | Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title_short | Analysis of the curve of Spee and the curve of Wilson in adult Indian population: A three-dimensional measurement study |
title_sort | analysis of the curve of spee and the curve of wilson in adult indian population: a three-dimensional measurement study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062145/ https://www.ncbi.nlm.nih.gov/pubmed/27746596 http://dx.doi.org/10.4103/0972-4052.191290 |
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