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논문 기본 정보

자료유형
학술저널
저자정보
Roderjan Douglas Augusto (Department of Restorative Dentistry School of Dentistry State University of Ponta Grossa Ponta Grossa PR Brazil.) Stanislawczuk Rodrigo (Department of Restorative Dentistry School of Dentistry Campos Gerais Higher Education Center - CESCAGE Ponta Grossa PR Brazil.) Soares Diana Gabriela (Department of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry University of São Paulo Bauru SP Brazil.) de Souza Costa Carlos Alberto (Department of Physiology and Pathology Araraquara School of Dentistry São Paulo State University Araraquara SP Brazil.) Favoreto Michael Willian (Department of Restorative Dentistry School of Dentistry State University of Ponta Grossa Ponta Grossa PR Brazil.) Reis Alessandra (Department of Restorative Dentistry School of Dentistry State University of Ponta Grossa Ponta Grossa PR Brazil.) Loguercio Alessandro D. (Department of Restorative Dentistry School of Dentistry State University of Ponta Grossa Ponta Grossa PR Brazil.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제48권 제2호
발행연도
2023.5
수록면
1 - 11 (11page)
DOI
10.5395/rde.2023.48.e12

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초록· 키워드

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Objectives The present study evaluated the pulp response of human mandibular incisors subjected to in-office dental bleaching using gels with medium or high concentrations of hydrogen peroxide (HP). Materials and Methods The following groups were compared: 35% HP (HP35; n = 5) or 20% HP (HP20; n = 4). In the control group (CONT; n = 2), no dental bleaching was performed. The color change (CC) was registered at baseline and after 2 days using the Vita Classical shade guide. Tooth sensitivity (TS) was also recorded for 2 days post-bleaching. The teeth were extracted 2 days after the clinical procedure and subjected to histological analysis. The CC and overall scores for histological evaluation were evaluated by the Kruskal-Wallis and Mann-Whitney tests. The percentage of patients with TS was evaluated by the Fisher exact test (α = 0.05). Results The CC and TS of the HP35 group were significantly higher than those of the CONT group (p < 0.05) and the HP20 group showed an intermediate response, without significant differences from either the HP35 or CONT group (p > 0.05). In both experimental groups, the coronal pulp tissue exhibited partial necrosis associated with tertiary dentin deposition. Overall, the subjacent pulp tissue exhibited a mild inflammatory response. Conclusions In-office bleaching therapies using bleaching gels with 20% or 35% HP caused similar pulp damage to the mandibular incisors, characterized by partial necrosis, tertiary dentin deposition, and mild inflammation.

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