Rafael R Carvalho, Natália R Carlos, Francisco Uf de Campos, Cecilia P Turssi, Waldemir F Vieira Júnior, Flávia Lb do Amaral, Roberta T Basting
{"title":"臭氧气体治疗牙齿漂白可以保持牙釉质的显微硬度、粗糙度和表面微细度。","authors":"Rafael R Carvalho, Natália R Carlos, Francisco Uf de Campos, Cecilia P Turssi, Waldemir F Vieira Júnior, Flávia Lb do Amaral, Roberta T Basting","doi":"10.54589/aol.36/1/15","DOIUrl":null,"url":null,"abstract":"<p><p>After ozone therapy for bleaching, it is important to evaluate enamel surface properties, to ensure that\nbleaching provides adequate conditions for sound dental substrate. Aim: The aim of this in vitro study\nwas to evaluate the effects of a bleaching treatment with 10% carbamide peroxide (CP), with or without\nozone (O), on the microhardness, roughness and micromorphology of the enamel surface.</p><p><strong>Materials and method: </strong>Bovine enamel blocks were planed and distributed among the following three bleaching\ntreatment groups (n=10): CP - 1 hour per day/14 days (Opalescence PF 10%/ Ultradent); O - 1 hour\nper day every 3 days/3 sessions (Medplus V Philozon, 60 mcg/mL and oxygen flow rate of 1 L/min);\nand OCP - CP with O, 1 hour per day every 3 days/3 sessions. Enamel surface microhardness (Knoop),\nroughness (Ra), and micromorphology by scanning electron microscopy (5,000x magnification) were\ndetermined before and after the treatments.</p><p><strong>Results: </strong>ANOVA and Tukey-Kramer’s test showed that\nenamel microhardness remained unchanged by treatment with O and OCP (p=0.0087), but decreased\nby treatment with CP. Treatment with O promoted higher enamel microhardness than the other groups\n(p=0.0169). Generalized linear mixed models for repeated measures over time indicated treatment with\nCP increased enamel roughness more than OCP or O (p=0.0003). CP produced slight irregularities\nin enamel micromorphology after the whitening treatment. O, with or without CP, maintained the\nmechanical and physical properties of microhardness and enamel surface micromorphology, and either\nmaintained or reduced surface roughness, compared to the conventional tray-delivered CP bleaching\ntreatment.</p><p><strong>Conclusions: </strong>Treatment with 10% carbamide peroxide in trays promoted greater changes\nin enamel surface properties than treatments with ozone and with 10% ozonized carbamide peroxide\nin the office.</p>","PeriodicalId":7033,"journal":{"name":"Acta odontologica latinoamericana : AOL","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a5/11/1852-4834-36-1-15.PMC10283381.pdf","citationCount":"0","resultStr":"{\"title\":\"Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.\",\"authors\":\"Rafael R Carvalho, Natália R Carlos, Francisco Uf de Campos, Cecilia P Turssi, Waldemir F Vieira Júnior, Flávia Lb do Amaral, Roberta T Basting\",\"doi\":\"10.54589/aol.36/1/15\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>After ozone therapy for bleaching, it is important to evaluate enamel surface properties, to ensure that\\nbleaching provides adequate conditions for sound dental substrate. Aim: The aim of this in vitro study\\nwas to evaluate the effects of a bleaching treatment with 10% carbamide peroxide (CP), with or without\\nozone (O), on the microhardness, roughness and micromorphology of the enamel surface.</p><p><strong>Materials and method: </strong>Bovine enamel blocks were planed and distributed among the following three bleaching\\ntreatment groups (n=10): CP - 1 hour per day/14 days (Opalescence PF 10%/ Ultradent); O - 1 hour\\nper day every 3 days/3 sessions (Medplus V Philozon, 60 mcg/mL and oxygen flow rate of 1 L/min);\\nand OCP - CP with O, 1 hour per day every 3 days/3 sessions. Enamel surface microhardness (Knoop),\\nroughness (Ra), and micromorphology by scanning electron microscopy (5,000x magnification) were\\ndetermined before and after the treatments.</p><p><strong>Results: </strong>ANOVA and Tukey-Kramer’s test showed that\\nenamel microhardness remained unchanged by treatment with O and OCP (p=0.0087), but decreased\\nby treatment with CP. Treatment with O promoted higher enamel microhardness than the other groups\\n(p=0.0169). Generalized linear mixed models for repeated measures over time indicated treatment with\\nCP increased enamel roughness more than OCP or O (p=0.0003). CP produced slight irregularities\\nin enamel micromorphology after the whitening treatment. O, with or without CP, maintained the\\nmechanical and physical properties of microhardness and enamel surface micromorphology, and either\\nmaintained or reduced surface roughness, compared to the conventional tray-delivered CP bleaching\\ntreatment.</p><p><strong>Conclusions: </strong>Treatment with 10% carbamide peroxide in trays promoted greater changes\\nin enamel surface properties than treatments with ozone and with 10% ozonized carbamide peroxide\\nin the office.</p>\",\"PeriodicalId\":7033,\"journal\":{\"name\":\"Acta odontologica latinoamericana : AOL\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-04-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a5/11/1852-4834-36-1-15.PMC10283381.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta odontologica latinoamericana : AOL\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.54589/aol.36/1/15\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta odontologica latinoamericana : AOL","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.54589/aol.36/1/15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.
After ozone therapy for bleaching, it is important to evaluate enamel surface properties, to ensure that
bleaching provides adequate conditions for sound dental substrate. Aim: The aim of this in vitro study
was to evaluate the effects of a bleaching treatment with 10% carbamide peroxide (CP), with or without
ozone (O), on the microhardness, roughness and micromorphology of the enamel surface.
Materials and method: Bovine enamel blocks were planed and distributed among the following three bleaching
treatment groups (n=10): CP - 1 hour per day/14 days (Opalescence PF 10%/ Ultradent); O - 1 hour
per day every 3 days/3 sessions (Medplus V Philozon, 60 mcg/mL and oxygen flow rate of 1 L/min);
and OCP - CP with O, 1 hour per day every 3 days/3 sessions. Enamel surface microhardness (Knoop),
roughness (Ra), and micromorphology by scanning electron microscopy (5,000x magnification) were
determined before and after the treatments.
Results: ANOVA and Tukey-Kramer’s test showed that
enamel microhardness remained unchanged by treatment with O and OCP (p=0.0087), but decreased
by treatment with CP. Treatment with O promoted higher enamel microhardness than the other groups
(p=0.0169). Generalized linear mixed models for repeated measures over time indicated treatment with
CP increased enamel roughness more than OCP or O (p=0.0003). CP produced slight irregularities
in enamel micromorphology after the whitening treatment. O, with or without CP, maintained the
mechanical and physical properties of microhardness and enamel surface micromorphology, and either
maintained or reduced surface roughness, compared to the conventional tray-delivered CP bleaching
treatment.
Conclusions: Treatment with 10% carbamide peroxide in trays promoted greater changes
in enamel surface properties than treatments with ozone and with 10% ozonized carbamide peroxide
in the office.