Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-28T04:23:28.908Z Has data issue: false hasContentIssue false
  • English
  • Français

Evaluation of physical and adhesive properties of enamel after a therapeutic dose of radiation and bonding of orthodontic metal brackets: an in vitro study

Published online by Cambridge University Press:  23 January 2020

A. Anushree ,
Ashutosh Shetty Open the ORCID record for Ashutosh Shetty [Opens in a new window] ,
Crystal Runa Soans ,
M. N. Kuttappa ,
Akhil Shetty ,
Kaushik Shetty  and
U. S. Krishna Nayak
A. Anushree
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
Ashutosh Shetty*
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
Crystal Runa Soans
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
M. N. Kuttappa
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
Akhil Shetty
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
Kaushik Shetty
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
U. S. Krishna Nayak
Affiliation:
Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India
*
Author for correspondence: Ashutosh Shetty, Department of Orthodontics and Dentofacial Orthopaedics, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India. E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Aim:

The study aimed to evaluate the shear bond strength (SBS) of metal brackets and adhesive properties of bonded irradiated and non-irradiated teeth.

Methods:

Sixty-six extracted premolar samples were randomly divided into three groups—(a) Control group consisting of 22 non-irradiated, non-aged teeth (Group 1), (b) 22 non-irradiated, aged samples (Group 2) and (c) 22 irradiated, aged samples (Group 3). Irradiation was done using gamma irradiation with a fractionated dose of 60 Gy for 5 consecutive days per week over 6 weeks. Metal brackets were bonded on all samples with light cure adhesive and subjected to SBS test using universal testing machine. The samples were assessed under the scanning electron microscope to check for the adhesive remnant index (ARI) and tag depth.

Results:

There was a statistically significant decrease in the mean SBS of the irradiated samples compared to the non-irradiated teeth. The non-irradiated, aged samples showed a majority of ARI scoring 1 and 2. Whereas, the irradiated samples showed ARI scoring 2 and 3. Approximately, 77·3% of the non-irradiated samples showed no adhesive present on the tooth surface, and 27·2% of the irradiated samples had more than 50% adhesive present on the enamel surface.

Conclusion:

There is a statistically significant decrease in SBS of irradiated enamel compared to that of non-irradiated teeth. However, the SBS observed in the three groups was well above the ideal SBS for orthodontic bonding, that is, 5·6–6·8 MPa. The adhesive remnant was found on all samples of the irradiated group. Deeper adhesive resin tags were found in the irradiated group in the resin–enamel interface.

Keywords

adhesive remnant indexbonding on irradiated teethradiotherapyscanning electron microscopyshear bond strength
Type
Original Article
Information
Journal of Radiotherapy in Practice , Volume 20 , Issue 1 , March 2021 , pp. 78 - 82
Check for updates
Copyright
© The Authors, 2020. Published by Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Fitzmaurice, C, Allen, C, Barber, R M et al. Global, regional, and national cancer incidence, mortality, years of life lost, years lived with disability, and disability-adjusted life-years for 32 cancer groups, 1990 to 2015: a systematic analysis for the global burden of disease study. J Am Med Assoc Oncol 2017; 3 (4): 524–548.Google ScholarPubMed
Santin, G C, Palma-Dibb, R G, Romano, F L, de Oliveira, H F, Nelson Filho, P, de Queiroz, A M. Physical and adhesive properties of dental enamel after radiotherapy and bonding of metal and ceramic brackets. Am J Orthod Dentofacial Orthop 2015; 148 (2): 283–292.10.1016/j.ajodo.2015.03.025CrossRefGoogle ScholarPubMed
Beech, N, Robinson, S, Porceddu, S, Batstone, M. Dental management of patients irradiated for head and neck cancer. Aust Dent J 2014; 59 (1): 20–28.CrossRefGoogle ScholarPubMed
Sciubba, J J, Goldenberg, D. Oral complications of radiotherapy. Lancet Oncol 2006; 7 (2): 175–183.10.1016/S1470-2045(06)70580-0CrossRefGoogle ScholarPubMed
Naidu, M U, Ramana, G V, Rani, P U, Suman, A, Roy, P. Chemotherapy-induced and/or radiation therapy-induced oral mucositis-complicating the treatment of cancer. Neoplasia 2004; 6 (5): 423–431.CrossRefGoogle ScholarPubMed
Gonçalves, L M, Palma-Dibb, R G, Paula-Silva, F W, de Oliveira, H F, Nelson-Filho, P, da Silva, L A, de Queiroz, A M. Radiation therapy alters microhardness and microstructure of enamel and dentin of permanent human teeth. J Dent 2014; 42 (8): 986–992.10.1016/j.jdent.2014.05.011CrossRefGoogle ScholarPubMed
Walker, M P, Wichman, B, Cheng, A L, Coster, J, Williams, K B. Impact of radiotherapy dose on dentition breakdown in head and neck cancer patients. Pract Radiat Oncol 2011; 1 (3): 142–148.10.1016/j.prro.2011.03.003CrossRefGoogle ScholarPubMed
Kumar, N, Brooke, A, Burke, M, John, R, O’Donnell, A, Soldani, F. The oral management of oncology patients requiring radiotherapy, chemotherapy and/or bone marrow transplantation. Fac Dent J 2013; 4 (4): 200–203.10.1308/204268513X13776914744952CrossRefGoogle Scholar
Naves, L Z, Novais, V R, Armstrong, S R, Correr-Sobrinho, L, Soares, C J. Effect of gamma radiation on bonding to human enamel and dentin. Supportive Care Cancer 2012; 20 (11): 2873–2878.10.1007/s00520-012-1414-yCrossRefGoogle ScholarPubMed
Dahllöf, G, Huggare, J. Orthodontic considerations in the pediatric cancer patient: a review. Semin Orthod 2004; 10 (4): 266–276).CrossRefGoogle Scholar
Reynolds, IR, Von Fraunhofer, JA. Direct bonding of orthodontic brackets—a comparative study of adhesives. Br J Orthod 1976; 3 (3): 143–146.CrossRefGoogle ScholarPubMed
Gale, MS, Darvell, BW. Thermal cycling procedures for laboratory testing of dental restorations. J Dent 1999; 27 (2): 89–99.CrossRefGoogle ScholarPubMed
Årtun, J, Bergland, S. Clinical trials with crystal growth conditioning as an alternative to acid-etch enamel pretreatment. Am J Orthod 1984; 85 (4): 333–340.CrossRefGoogle ScholarPubMed
Dare, A, Hachisu, R, Yamaguchi, A, Yokose, S, Yoshiki, S, Okano, T. Effects of ionizing radiation on proliferation and differentiation of osteoblast-like cells. J Dent Res 1997; 76 (2): 658–664.CrossRefGoogle ScholarPubMed
Harhash, A, Arnout, E. The effect of radiotherapy dose on the bond strength of resin composite to both enamel and dentin. Egypt Dent J 2013; 59 (4): 3995–4002.Google Scholar