Effect of CO2 Laser and Fluoride Varnish Application on Microhardness of Enamel Surface Around Orthodontic Brackets

被引:8
|
作者
Mahmoudzadeh, Majid [1 ]
Rezaei-Soufi, Loghman [2 ]
Farhadian, Nasrin [1 ]
Jamalian, Seyed Farzad
Akbarzadeh, Mahdi [3 ]
Momeni, Mohammadali [4 ]
Basamtabar, Masome [5 ]
机构
[1] Hamadan Univ Med Sci, Dept Orthodont, Dent Res Ctr, Hamadan, Iran
[2] Hamadan Univ Med Sci, Dept Restorat Dent, Dent Res Ctr, Hamadan, Iran
[3] Hamadan Univ Med Sci, Dept Biostat, Hamadan, Iran
[4] Shahrekord Univ Med Sci, Fac Dent, Orthodont Dept, Chaleshtar, Shahrekord, Iran
[5] Kermanshah Univ Med Sci, Fac Dent, Dept Orthodont, Kermanshah, Iran
关键词
CO2; laser; Fluoride varnish; Demineralization; Orthodontic bracket;
D O I
10.15171/jlms.2018.10
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Introduction: Orthodontic treatment has many advantages such as esthetic improvement and self-esteem enhancement; yet it has some disadvantages such as increasing the risk of formation of white spot lesions, because it makes oral hygiene more difficult. It is rational to implement procedures to prevent these lesions. The present study was aimed to assess the effect of CO2 laser and fluoride varnish on the surface of the enamel surface microhardness around the orthodontic braces. Methods: Eighty extracted premolar teeth were selected, scaled, polished with nonfluoridated pumic and metal brackets were bonded to them. Then, they were randomly allocated to 5 groups: control (neither fluoride nor laser is used on enamel surfaces), fluoride (4 minutes fluoride varnish treatment of the enamel surfaces), CO2 laser (10.6 mu m CO2 laser irradiation of the teeth), laserfluoride (fluoride application after laser irradiation) and fluoride-laser (fluoride was applied and then teeth were irradiated with laser). After surface treatment around brackets on enamel, the samples were stored in 0.1% thymol for less than 5 days and then they were exposed to a 10-day microbiological caries model. Microhardness values of enamel were evaluated with Vickers test. One sample of each group (5 teeth from 80 samples) was prepared for SEM (scanning electron microscopy) and the data from 75 remaining teeth were analyzed with analysis of variance (ANOVA) and chi-square tests (alpha = 0.05). Results: Microhardness mean values from high to low were as follow: fluoride-laser, laser-fluoride, laser, fluoride and control. Microhardness in fluoride-laser group was significantly higher compared with that of the control group. Distribution adhesive remnant index (ARI) scores were significantly different between groups and most of bond failures occurred at the enamel-adhesive interface in groups 2 to 5 and at the adhesive-bracket interface in the control group. Conclusion: Combination of fluoride varnish and CO2 laser irradiation can reduce enamel demineralization around orthodontic brackets.
引用
收藏
页码:43 / 49
页数:7
相关论文
共 50 条
  • [1] Effect of carbon dioxide laser irradiation on enamel surface microhardness around orthodontic brackets
    Miresmaeili, Amirfarhang
    Farhadian, Nasrin
    Rezaei-Soufi, Loghman
    Saharkhizan, Mehdi
    Veisi, Meysam
    AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 2014, 146 (02) : 161 - 165
  • [2] Effect of CO2 Laser-Assisted Titanium Tetra-fluoride on Demineralization of Enamel Around Orthodontic Brackets
    Moshkelgosha, Vahid
    Zandian, Reza
    Sohrabi, Mona
    Fekrazad, Reza
    JOURNAL OF LASERS IN MEDICAL SCIENCES, 2024, 15
  • [3] EFFECT OF CO2 LASER AND FLUORIDE DENTIFRICE ON DEMINERALIZATION AROUND ORTHODONTIC BRACKETS- AN IN SITU STUDY
    Rodrigues, Livia
    Parisotto, Thais
    Steiner-Oliveira, Carolina
    Azevedo, Lidiany
    Tabchoury, Cinthia
    Nobre-dos-Santos, Marines
    LASERS IN SURGERY AND MEDICINE, 2014, 46 : 57 - 57
  • [4] Effect of fluoride varnish on enamel demineralization around brackets: An in-vivo study
    Farhadian, Nasrin
    Miresmaeili, Amirfarhang
    Eslami, Behnam
    Mehrabi, Sara
    AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 2008, 133 (04) : S95 - S98
  • [5] Evaluation of the preventive effect of two concentrations of xylitol varnish versus fluoride varnish on enamel demineralization around orthodontic brackets: a randomized controlled trial
    Najafi, Hooman Zarif
    Shavakhi, Mojgan
    Pakshir, Hamid Reza
    EUROPEAN JOURNAL OF ORTHODONTICS, 2022, 44 (03) : 243 - 251
  • [6] Effect of a fluoride varnish on demineralization adjacent to orthodontic brackets
    Todd, MA
    Staley, RN
    Kanellis, MJ
    Donly, KJ
    Wefel, JS
    AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 1999, 116 (02) : 159 - 167
  • [7] The effect of fluoride varnish in preventing enamel demineralization around and under orthodontic bracket
    Abou Hamdan, Wadih
    Badr, Sherine
    El Sayed, Ahmed
    INTERNATIONAL ORTHODONTICS, 2018, 16 (01) : 1 - 11
  • [8] Enamel resistance to demineralisation around orthodontic brackets after CO2 laser irradiation: a randomised clinical trial
    Raghis, Tuqa
    Mahmoud, Ghiath
    Abdullah, Ahmed
    Hamadah, Omar
    JOURNAL OF ORTHODONTICS, 2018, 45 (04) : 234 - 242
  • [9] In vitro Evaluation of Topical Fluoride Varnishes Effect on Enamel Demineralization Around Orthodontic Brackets
    Oancea, Roxana
    Mesaros, Anca
    Balean, Octavia Iulia
    Podariu, Angela Codruta
    REVISTA DE CHIMIE, 2018, 69 (11): : 3013 - 3017
  • [10] Influence of CO2 (10.6 μm) and Nd:YAG laser irradiation on the prevention of enamel caries around orthodontic brackets
    Seino, Priscila Yumi
    Freitas, Patricia Moreira
    Marques, Marcia Martins
    de Souza Almeida, Fernanda Campos
    Botta, Sergio Brossi
    Nunes Araujo Moreira, Maria Stella
    LASERS IN MEDICAL SCIENCE, 2015, 30 (02) : 611 - 616