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Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults

PURPOSE: The aim of this investigation was to analyze the dimensions of clinical crowns and to classify the crown and the gingival type in the anterior teeth in Korean young adults. MATERIALS AND METHODS: Casts were obtained from 50 subjects ranging in age from 24 to 32. Measurements of length and w...

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Autores principales: Song, Jae-Won, Leesungbok, Richard, Park, Su-Jung, Chang, Se Hun, Ahn, Su-Jin, Lee, Suk-Won
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Prosthodontics 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5582099/
https://www.ncbi.nlm.nih.gov/pubmed/28875000
http://dx.doi.org/10.4047/jap.2017.9.4.315
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author Song, Jae-Won
Leesungbok, Richard
Park, Su-Jung
Chang, Se Hun
Ahn, Su-Jin
Lee, Suk-Won
author_facet Song, Jae-Won
Leesungbok, Richard
Park, Su-Jung
Chang, Se Hun
Ahn, Su-Jin
Lee, Suk-Won
author_sort Song, Jae-Won
collection PubMed
description PURPOSE: The aim of this investigation was to analyze the dimensions of clinical crowns and to classify the crown and the gingival type in the anterior teeth in Korean young adults. MATERIALS AND METHODS: Casts were obtained from 50 subjects ranging in age from 24 to 32. Measurements of length and width were made on the casts using a pair of digital calipers on the entire dentition. Crown thickness and papilla height were also measured and MDW/CL (mesiodistal width to clinical length) and CW/CL (cervical width to clinical length) ratios of the maxillary anterior teeth were calculated. The K-clustering method was used for CW/CL to classify the anterior tooth shape into three groups (tapered, ovoid, and square), and one-way analysis of variance and Duncan's post-hoc comparison were used to evaluate statistical significance between the groups. Pearson's correlation analysis was performed between tooth shape and papillary height (PH) to demonstrate the correlation between tooth shape and gingival morphological characteristics. RESULTS: The average length of the maxillary central incisors was 9.89 mm; the mesio-distal width was 8.54 mm; and the ratio of width/length was 0.86 in Korean young adults. The average bucco-palatal thickness of the central incisor was 3.14 mm at the incisal 1/3 aspect. Ovoid type was the most common tooth shape (48%), followed by square type (29%) and taper type (23%) in the central incisors of Korean young adults. Tooth shape and gingival type were correlated with each other. CONCLUSION: New reference data were established for tooth size in Korean young adults and the data show several patterns of tooth shape and gingival type. Clinicians should diagnose and treat based on these characteristics for better results in the Korean population.
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spelling pubmed-55820992017-09-05 Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults Song, Jae-Won Leesungbok, Richard Park, Su-Jung Chang, Se Hun Ahn, Su-Jin Lee, Suk-Won J Adv Prosthodont Original Article PURPOSE: The aim of this investigation was to analyze the dimensions of clinical crowns and to classify the crown and the gingival type in the anterior teeth in Korean young adults. MATERIALS AND METHODS: Casts were obtained from 50 subjects ranging in age from 24 to 32. Measurements of length and width were made on the casts using a pair of digital calipers on the entire dentition. Crown thickness and papilla height were also measured and MDW/CL (mesiodistal width to clinical length) and CW/CL (cervical width to clinical length) ratios of the maxillary anterior teeth were calculated. The K-clustering method was used for CW/CL to classify the anterior tooth shape into three groups (tapered, ovoid, and square), and one-way analysis of variance and Duncan's post-hoc comparison were used to evaluate statistical significance between the groups. Pearson's correlation analysis was performed between tooth shape and papillary height (PH) to demonstrate the correlation between tooth shape and gingival morphological characteristics. RESULTS: The average length of the maxillary central incisors was 9.89 mm; the mesio-distal width was 8.54 mm; and the ratio of width/length was 0.86 in Korean young adults. The average bucco-palatal thickness of the central incisor was 3.14 mm at the incisal 1/3 aspect. Ovoid type was the most common tooth shape (48%), followed by square type (29%) and taper type (23%) in the central incisors of Korean young adults. Tooth shape and gingival type were correlated with each other. CONCLUSION: New reference data were established for tooth size in Korean young adults and the data show several patterns of tooth shape and gingival type. Clinicians should diagnose and treat based on these characteristics for better results in the Korean population. The Korean Academy of Prosthodontics 2017-08 2017-08-16 /pmc/articles/PMC5582099/ /pubmed/28875000 http://dx.doi.org/10.4047/jap.2017.9.4.315 Text en © 2017 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Song, Jae-Won
Leesungbok, Richard
Park, Su-Jung
Chang, Se Hun
Ahn, Su-Jin
Lee, Suk-Won
Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title_full Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title_fullStr Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title_full_unstemmed Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title_short Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults
title_sort analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in korean young adults
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5582099/
https://www.ncbi.nlm.nih.gov/pubmed/28875000
http://dx.doi.org/10.4047/jap.2017.9.4.315
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