Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial
Abstract Objective To assess pulp oxygen saturation levels (SaO2) in maxillary central incisors after dental bleaching. Materials and Methods 80 participants (160 teeth) were randomly allocated to four groups: G1 In-office bleaching with two applications of 35% hydrogen peroxide (HP) (20 minutes...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of São Paulo
2019-04-01
|
| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100445&lng=en&tlng=en |
| _version_ | 1818386547440877568 |
|---|---|
| author | LIMA Lorena Ferreira ALENCAR Ana Helena Gonçalves de Daniel de Almeida DECURCIO Julio Almeida SILVA Isabella Negro FAVARÃO Marco Antônio Zaiden LOUREIRO Fernando Branco BARLETTA Carlos ESTRELA |
| author_facet | LIMA Lorena Ferreira ALENCAR Ana Helena Gonçalves de Daniel de Almeida DECURCIO Julio Almeida SILVA Isabella Negro FAVARÃO Marco Antônio Zaiden LOUREIRO Fernando Branco BARLETTA Carlos ESTRELA |
| author_sort | LIMA Lorena Ferreira |
| collection | DOAJ |
| description | Abstract Objective To assess pulp oxygen saturation levels (SaO2) in maxillary central incisors after dental bleaching. Materials and Methods 80 participants (160 teeth) were randomly allocated to four groups: G1 In-office bleaching with two applications of 35% hydrogen peroxide (HP) (20 minutes), followed by at-home bleaching with 10% carbamide peroxide (CP) (2 hours/day for 16 days); G2 - Same protocol as G1, plus desensitizing toothpaste; G3 - In-office bleaching with 35% HP and one application of placebo gel (20 minutes), followed by at-home bleaching with 10% CP (2 hours/day for 16 days); and G4 - Same protocol as G3, plus desensitizing toothpaste. Pulp SaO2 levels were measured before (T0) and immediately after (T1) in-office bleaching; on the 5th (T2), 8th (T3), 12th (T4), and 16th days of at-home bleaching (T5); and on the 7th (T6) and 30th (T7) days. Mean (SD) pulp SaO2 levels were compared within groups by generalized estimating equations (GEE) and Student’s t-test (P<0.05). Results Mean pulp SaO2 at T0 was 84.29% in G1, 84.38% in G2, 84.79% in G3, and 85.83% in G4. At T1, these values decreased to 81.96%, 82.06%, 82.19%, and 81.15% in G1, G2, G3, and G4 respectively, with significant difference in G4 (P<0.05). During home bleaching, pulp SaO2 levels varied in all groups, with 86.55%, 86.60%, 85.71%, and 87.15% means at T7 for G1, G2, G3, and G4, respectively; G2 presented significant difference (P<0.05). Conclusions Pulp SaO2 level in maxillary central incisors was similar at baseline, reducing immediately after in-office bleaching, regardless of using desensitizing toothpaste and increasing at 30 days after dental bleaching. |
| first_indexed | 2024-12-14T03:55:47Z |
| format | Article |
| id | doaj.art-4782c5c491054692af20291f29fd1890 |
| institution | Directory Open Access Journal |
| issn | 1678-7765 |
| language | English |
| last_indexed | 2024-12-14T03:55:47Z |
| publishDate | 2019-04-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-4782c5c491054692af20291f29fd18902022-12-21T23:18:05ZengUniversity of São PauloJournal of Applied Oral Science1678-77652019-04-0127010.1590/1678-7757-2018-0442S1678-77572019000100445Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trialLIMA Lorena FerreiraALENCAR Ana Helena Gonçalves deDaniel de Almeida DECURCIOJulio Almeida SILVAIsabella Negro FAVARÃOMarco Antônio Zaiden LOUREIROFernando Branco BARLETTACarlos ESTRELAAbstract Objective To assess pulp oxygen saturation levels (SaO2) in maxillary central incisors after dental bleaching. Materials and Methods 80 participants (160 teeth) were randomly allocated to four groups: G1 In-office bleaching with two applications of 35% hydrogen peroxide (HP) (20 minutes), followed by at-home bleaching with 10% carbamide peroxide (CP) (2 hours/day for 16 days); G2 - Same protocol as G1, plus desensitizing toothpaste; G3 - In-office bleaching with 35% HP and one application of placebo gel (20 minutes), followed by at-home bleaching with 10% CP (2 hours/day for 16 days); and G4 - Same protocol as G3, plus desensitizing toothpaste. Pulp SaO2 levels were measured before (T0) and immediately after (T1) in-office bleaching; on the 5th (T2), 8th (T3), 12th (T4), and 16th days of at-home bleaching (T5); and on the 7th (T6) and 30th (T7) days. Mean (SD) pulp SaO2 levels were compared within groups by generalized estimating equations (GEE) and Student’s t-test (P<0.05). Results Mean pulp SaO2 at T0 was 84.29% in G1, 84.38% in G2, 84.79% in G3, and 85.83% in G4. At T1, these values decreased to 81.96%, 82.06%, 82.19%, and 81.15% in G1, G2, G3, and G4 respectively, with significant difference in G4 (P<0.05). During home bleaching, pulp SaO2 levels varied in all groups, with 86.55%, 86.60%, 85.71%, and 87.15% means at T7 for G1, G2, G3, and G4, respectively; G2 presented significant difference (P<0.05). Conclusions Pulp SaO2 level in maxillary central incisors was similar at baseline, reducing immediately after in-office bleaching, regardless of using desensitizing toothpaste and increasing at 30 days after dental bleaching.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100445&lng=en&tlng=enDental bleachingDental pulpClinical trialTooth bleaching |
| spellingShingle | LIMA Lorena Ferreira ALENCAR Ana Helena Gonçalves de Daniel de Almeida DECURCIO Julio Almeida SILVA Isabella Negro FAVARÃO Marco Antônio Zaiden LOUREIRO Fernando Branco BARLETTA Carlos ESTRELA Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial Journal of Applied Oral Science Dental bleaching Dental pulp Clinical trial Tooth bleaching |
| title | Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial |
| title_full | Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial |
| title_fullStr | Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial |
| title_full_unstemmed | Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial |
| title_short | Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial |
| title_sort | effect of dental bleaching on pulp oxygen saturation in maxillary central incisors a randomized clinical trial |
| topic | Dental bleaching Dental pulp Clinical trial Tooth bleaching |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100445&lng=en&tlng=en |
| work_keys_str_mv | AT limalorenaferreira effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT alencaranahelenagoncalvesde effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT danieldealmeidadecurcio effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT julioalmeidasilva effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT isabellanegrofavarao effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT marcoantoniozaidenloureiro effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT fernandobrancobarletta effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial AT carlosestrela effectofdentalbleachingonpulpoxygensaturationinmaxillarycentralincisorsarandomizedclinicaltrial |