Palatogingival groove and root canal instrumentation
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/iej.13259 http://hdl.handle.net/11449/198406 |
Resumo: | Aim: To evaluate the morphology and impact of root canal preparation in maxillary incisors with palatogingival grooves (PGG). Methodology: Twenty extracted human maxillary incisors with PGG were subjected to macroscopic analysis and scanning electron microscopy analysis (SEM). The following characteristics of the PGG were evaluated: depth, point of origin in the cingulum, extension and position on the lingual surface. Furthermore, the presence of calculus, communications between the root canal system and the PGG, and root resorptions were investigated. The root canals were subsequently instrumented with K-files of three consecutive sizes. The teeth were sectioned, and the axial plane of each tooth section was imaged using SEM before and after instrumentation. The distance between the root canal walls and the PGG was calculated according to the location. Additionally, the distance between canal walls and cementum was measured at three different sites, to verify if instrumentation influenced dentine removal on a specific wall in teeth with PGG. Statistical analysis was performed using the Mann–Whitney or Student’s t-test (P < 0.05). Results: Macroscopic analysis revealed that a deep groove was most frequently observed (75%), followed by a depression/shallow groove (25%) (P < 0.05). PGG typically originated in the distal margin ridge of the cingulum (65%) (P < 0.05), extending only to the middle (45%) or up to the apical (50%) third of the root (P < 0.05). Additionally, PGGs were typically located on the distal aspect of the lingual surface (70%) (P < 0.05). Calculus was concentrated on the surface of the crown and cementum–enamel junction (P < 0.05). Communication between the root canal and PGG was present in 35% of teeth, and root resorptions were noted in 50% of teeth. The distance between the external root surface and the pulp cavity was significantly narrower after instrumentation (P < 0.05); however, root canal preparation did not influence dentine removal on the specific wall associated with the groove (P > 0.05). Conclusions: Palatogingival grooves were characteristically deep and originated from the distal margin of the cingulum. Although it has been associated with a thinner root wall, root canal preparation did not influence the thickness of the specific wall in the maxillary incisors with PGG. |
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Palatogingival groove and root canal instrumentationdental morphologypalatogingival grooveroot canal treatmentscanning electron microscopy (SEM)Aim: To evaluate the morphology and impact of root canal preparation in maxillary incisors with palatogingival grooves (PGG). Methodology: Twenty extracted human maxillary incisors with PGG were subjected to macroscopic analysis and scanning electron microscopy analysis (SEM). The following characteristics of the PGG were evaluated: depth, point of origin in the cingulum, extension and position on the lingual surface. Furthermore, the presence of calculus, communications between the root canal system and the PGG, and root resorptions were investigated. The root canals were subsequently instrumented with K-files of three consecutive sizes. The teeth were sectioned, and the axial plane of each tooth section was imaged using SEM before and after instrumentation. The distance between the root canal walls and the PGG was calculated according to the location. Additionally, the distance between canal walls and cementum was measured at three different sites, to verify if instrumentation influenced dentine removal on a specific wall in teeth with PGG. Statistical analysis was performed using the Mann–Whitney or Student’s t-test (P < 0.05). Results: Macroscopic analysis revealed that a deep groove was most frequently observed (75%), followed by a depression/shallow groove (25%) (P < 0.05). PGG typically originated in the distal margin ridge of the cingulum (65%) (P < 0.05), extending only to the middle (45%) or up to the apical (50%) third of the root (P < 0.05). Additionally, PGGs were typically located on the distal aspect of the lingual surface (70%) (P < 0.05). Calculus was concentrated on the surface of the crown and cementum–enamel junction (P < 0.05). Communication between the root canal and PGG was present in 35% of teeth, and root resorptions were noted in 50% of teeth. The distance between the external root surface and the pulp cavity was significantly narrower after instrumentation (P < 0.05); however, root canal preparation did not influence dentine removal on the specific wall associated with the groove (P > 0.05). Conclusions: Palatogingival grooves were characteristically deep and originated from the distal margin of the cingulum. Although it has been associated with a thinner root wall, root canal preparation did not influence the thickness of the specific wall in the maxillary incisors with PGG.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Oral Pathology and Oral Medicine Dental School of Amazonas State UniversityEndodontics School of Dentistry São Paulo State University (Unesp)Cariology Restorative Sciences and Endododontics University of MichiganRestorative Dentistry School of Dentistry Federal University of Minas GeraisOral Pathology Bauru Dental School University of São PauloEndodontics School of Dentistry São Paulo State University (Unesp)FAPESP: 03/10721-5Dental School of Amazonas State UniversityUniversidade Estadual Paulista (Unesp)University of MichiganUniversidade Federal de Minas Gerais (UFMG)Universidade de São Paulo (USP)Pinheiro, T. N.Cintra, L. T.A. [UNESP]Azuma, M. M.Benetti, F. [UNESP]Silva, C. C. [UNESP]Consolaro, A.2020-12-12T01:12:00Z2020-12-12T01:12:00Z2020-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article660-670http://dx.doi.org/10.1111/iej.13259International Endodontic Journal, v. 53, n. 5, p. 660-670, 2020.1365-25910143-2885http://hdl.handle.net/11449/19840610.1111/iej.132592-s2.0-85077902252Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Endodontic Journalinfo:eu-repo/semantics/openAccess2021-10-23T11:02:37Zoai:repositorio.unesp.br:11449/198406Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:06:47.418144Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Palatogingival groove and root canal instrumentation |
title |
Palatogingival groove and root canal instrumentation |
spellingShingle |
Palatogingival groove and root canal instrumentation Pinheiro, T. N. dental morphology palatogingival groove root canal treatment scanning electron microscopy (SEM) |
title_short |
Palatogingival groove and root canal instrumentation |
title_full |
Palatogingival groove and root canal instrumentation |
title_fullStr |
Palatogingival groove and root canal instrumentation |
title_full_unstemmed |
Palatogingival groove and root canal instrumentation |
title_sort |
Palatogingival groove and root canal instrumentation |
author |
Pinheiro, T. N. |
author_facet |
Pinheiro, T. N. Cintra, L. T.A. [UNESP] Azuma, M. M. Benetti, F. [UNESP] Silva, C. C. [UNESP] Consolaro, A. |
author_role |
author |
author2 |
Cintra, L. T.A. [UNESP] Azuma, M. M. Benetti, F. [UNESP] Silva, C. C. [UNESP] Consolaro, A. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Dental School of Amazonas State University Universidade Estadual Paulista (Unesp) University of Michigan Universidade Federal de Minas Gerais (UFMG) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Pinheiro, T. N. Cintra, L. T.A. [UNESP] Azuma, M. M. Benetti, F. [UNESP] Silva, C. C. [UNESP] Consolaro, A. |
dc.subject.por.fl_str_mv |
dental morphology palatogingival groove root canal treatment scanning electron microscopy (SEM) |
topic |
dental morphology palatogingival groove root canal treatment scanning electron microscopy (SEM) |
description |
Aim: To evaluate the morphology and impact of root canal preparation in maxillary incisors with palatogingival grooves (PGG). Methodology: Twenty extracted human maxillary incisors with PGG were subjected to macroscopic analysis and scanning electron microscopy analysis (SEM). The following characteristics of the PGG were evaluated: depth, point of origin in the cingulum, extension and position on the lingual surface. Furthermore, the presence of calculus, communications between the root canal system and the PGG, and root resorptions were investigated. The root canals were subsequently instrumented with K-files of three consecutive sizes. The teeth were sectioned, and the axial plane of each tooth section was imaged using SEM before and after instrumentation. The distance between the root canal walls and the PGG was calculated according to the location. Additionally, the distance between canal walls and cementum was measured at three different sites, to verify if instrumentation influenced dentine removal on a specific wall in teeth with PGG. Statistical analysis was performed using the Mann–Whitney or Student’s t-test (P < 0.05). Results: Macroscopic analysis revealed that a deep groove was most frequently observed (75%), followed by a depression/shallow groove (25%) (P < 0.05). PGG typically originated in the distal margin ridge of the cingulum (65%) (P < 0.05), extending only to the middle (45%) or up to the apical (50%) third of the root (P < 0.05). Additionally, PGGs were typically located on the distal aspect of the lingual surface (70%) (P < 0.05). Calculus was concentrated on the surface of the crown and cementum–enamel junction (P < 0.05). Communication between the root canal and PGG was present in 35% of teeth, and root resorptions were noted in 50% of teeth. The distance between the external root surface and the pulp cavity was significantly narrower after instrumentation (P < 0.05); however, root canal preparation did not influence dentine removal on the specific wall associated with the groove (P > 0.05). Conclusions: Palatogingival grooves were characteristically deep and originated from the distal margin of the cingulum. Although it has been associated with a thinner root wall, root canal preparation did not influence the thickness of the specific wall in the maxillary incisors with PGG. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:12:00Z 2020-12-12T01:12:00Z 2020-05-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1111/iej.13259 International Endodontic Journal, v. 53, n. 5, p. 660-670, 2020. 1365-2591 0143-2885 http://hdl.handle.net/11449/198406 10.1111/iej.13259 2-s2.0-85077902252 |
url |
http://dx.doi.org/10.1111/iej.13259 http://hdl.handle.net/11449/198406 |
identifier_str_mv |
International Endodontic Journal, v. 53, n. 5, p. 660-670, 2020. 1365-2591 0143-2885 10.1111/iej.13259 2-s2.0-85077902252 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Endodontic Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
660-670 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129161539092480 |