TY - JOUR
T1 - Influence of irrigation protocol on peroxide penetration into dentinal tubules following internal bleaching
T2 - A confocal laser scanning microscopy study
AU - Elbahary, Shlomo
AU - Gitit, Zafrir
AU - Flaisher-Salem, Nurit
AU - Azem, Hanaa
AU - Shemsesh, Hagay
AU - Rosen, Eyal
AU - Tsesis, Igor
N1 - Publisher Copyright:
©
PY - 2021/9/17
Y1 - 2021/9/17
N2 - Introduction: Discoloration of anterior teeth can result in cosmetic impairment in young children. The walking bleach technique stands out because of its esthetic results with minor side effects. Little information is available regarding the influence of various irrigation solutions on peroxide penetration. The aim of this study is to evaluate the influence of different irrigation protocols on peroxide penetration into dentinal tubules using confocal laser scanning microscopy (CLSM). Study design: Cavity preparations were made in 50 extracted permanent premolars. The teeth went through different irrigation sequences: A. control B. saline C. EDTA, NaOCl D. phosphoric acid E. EDTA, NaOCl, phosphoric acid. Then, mixture of fluorescent dyed sodium perborate paste was placed along the pulp chamber and the coronal access cavity, and was refilled at days 7, 14 and 21. Results: The minimal and maximal penetration depths were 324 and 3045 μm, respectively, with a mean of 1607μm. The stained areas were significantly larger in the buccal and lingual directions (P<0.05). Groups B and C showed significantly larger penetration in weeks 2 and 3 compared to week 1 (P<0.05). Group D and E showed significantly larger penetration compared to groups B and C at all times (P<0.05). Conclusion: Bleaching agents penetrate to the extra-radicular region of teeth; however, the level of peroxide penetration is significantly higher when the irrigation sequence consists of phosphoric acid prior the bleaching agent placement.
AB - Introduction: Discoloration of anterior teeth can result in cosmetic impairment in young children. The walking bleach technique stands out because of its esthetic results with minor side effects. Little information is available regarding the influence of various irrigation solutions on peroxide penetration. The aim of this study is to evaluate the influence of different irrigation protocols on peroxide penetration into dentinal tubules using confocal laser scanning microscopy (CLSM). Study design: Cavity preparations were made in 50 extracted permanent premolars. The teeth went through different irrigation sequences: A. control B. saline C. EDTA, NaOCl D. phosphoric acid E. EDTA, NaOCl, phosphoric acid. Then, mixture of fluorescent dyed sodium perborate paste was placed along the pulp chamber and the coronal access cavity, and was refilled at days 7, 14 and 21. Results: The minimal and maximal penetration depths were 324 and 3045 μm, respectively, with a mean of 1607μm. The stained areas were significantly larger in the buccal and lingual directions (P<0.05). Groups B and C showed significantly larger penetration in weeks 2 and 3 compared to week 1 (P<0.05). Group D and E showed significantly larger penetration compared to groups B and C at all times (P<0.05). Conclusion: Bleaching agents penetrate to the extra-radicular region of teeth; however, the level of peroxide penetration is significantly higher when the irrigation sequence consists of phosphoric acid prior the bleaching agent placement.
KW - Bleaching
KW - CLSM
KW - Discoloration
KW - Peroxide
KW - Sodium perborate
UR - http://www.scopus.com/inward/record.url?scp=85115747769&partnerID=8YFLogxK
U2 - 10.17796/1053-4625-45.4.6
DO - 10.17796/1053-4625-45.4.6
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C2 - 34534304
AN - SCOPUS:85115747769
SN - 1053-4628
VL - 45
SP - 253
EP - 258
JO - Journal of Clinical Pediatric Dentistry
JF - Journal of Clinical Pediatric Dentistry
IS - 4
ER -