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Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study

BACKGROUND AND OBJECTIVES: The purpose of this study was to evaluate the positional changes of the periodontal tissues, particularly the biological width, following surgical crown-lengthening in human subjects. MATERIALS AND METHODS: A clinical trial study involving 15 patients was carried out for a...

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Autores principales: Shobha, K. S., Mahantesha, Seshan, Hema, Mani, R., Kranti, K
Formato: Texto
Lenguaje:English
Publicado: Medknow Publications 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3100858/
https://www.ncbi.nlm.nih.gov/pubmed/21760669
http://dx.doi.org/10.4103/0972-124X.75910
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author Shobha, K. S.
Mahantesha,
Seshan, Hema
Mani, R.
Kranti, K
author_facet Shobha, K. S.
Mahantesha,
Seshan, Hema
Mani, R.
Kranti, K
author_sort Shobha, K. S.
collection PubMed
description BACKGROUND AND OBJECTIVES: The purpose of this study was to evaluate the positional changes of the periodontal tissues, particularly the biological width, following surgical crown-lengthening in human subjects. MATERIALS AND METHODS: A clinical trial study involving 15 patients was carried out for a period of 6 months. Sites were divided into 3 groups: treated (TT) sites, adjacent (AD) sites and nonadjacent (NAD) sites. Free gingival margin [FGM], attachment level, pocket depth, bone level, biological width [BW] were recorded at baseline, 1, 3 and 6 months. Direct bone level after flap reflection was recorded before and after osseous resection at baseline only. Level of osseous crest was lowered based on BW, and supracrestal tooth structure needed using a combination of rotary and hand instruments. STATISTICAL ANALYSIS: Student t test and ANOVA were used. RESULTS: Overall, apical displacement of FGM at TT, AD and NAD sites was statistically significant compared to baseline. The apical displacement of FGM at TT site was more when compared to that at AD and NAD sites at 3 and 6 months. The BW at the TT site was smaller at 1, 3 and 6 months compared to that at baseline. However, at all sites, BW was reestablished to the baseline value at the end of 6 months. INTERPRETATION AND CONCLUSION: The BW at TT sites was reestablished to its original vertical dimension by 6 months. In addition, a consistent 2-mm gain of coronal tooth structure was observed at the 1, 3 and 6-month examinations.
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spelling pubmed-31008582011-07-14 Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study Shobha, K. S. Mahantesha, Seshan, Hema Mani, R. Kranti, K J Indian Soc Periodontol Original Article BACKGROUND AND OBJECTIVES: The purpose of this study was to evaluate the positional changes of the periodontal tissues, particularly the biological width, following surgical crown-lengthening in human subjects. MATERIALS AND METHODS: A clinical trial study involving 15 patients was carried out for a period of 6 months. Sites were divided into 3 groups: treated (TT) sites, adjacent (AD) sites and nonadjacent (NAD) sites. Free gingival margin [FGM], attachment level, pocket depth, bone level, biological width [BW] were recorded at baseline, 1, 3 and 6 months. Direct bone level after flap reflection was recorded before and after osseous resection at baseline only. Level of osseous crest was lowered based on BW, and supracrestal tooth structure needed using a combination of rotary and hand instruments. STATISTICAL ANALYSIS: Student t test and ANOVA were used. RESULTS: Overall, apical displacement of FGM at TT, AD and NAD sites was statistically significant compared to baseline. The apical displacement of FGM at TT site was more when compared to that at AD and NAD sites at 3 and 6 months. The BW at the TT site was smaller at 1, 3 and 6 months compared to that at baseline. However, at all sites, BW was reestablished to the baseline value at the end of 6 months. INTERPRETATION AND CONCLUSION: The BW at TT sites was reestablished to its original vertical dimension by 6 months. In addition, a consistent 2-mm gain of coronal tooth structure was observed at the 1, 3 and 6-month examinations. Medknow Publications 2010 /pmc/articles/PMC3100858/ /pubmed/21760669 http://dx.doi.org/10.4103/0972-124X.75910 Text en © Journal of Indian Society of Periodontology http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Shobha, K. S.
Mahantesha,
Seshan, Hema
Mani, R.
Kranti, K
Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title_full Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title_fullStr Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title_full_unstemmed Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title_short Clinical evaluation of the biological width following surgical crown-lengthening procedure: A prospective study
title_sort clinical evaluation of the biological width following surgical crown-lengthening procedure: a prospective study
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3100858/
https://www.ncbi.nlm.nih.gov/pubmed/21760669
http://dx.doi.org/10.4103/0972-124X.75910
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