Original Article

Year : 2023 | Volume : 14 | Issue : 1 | Page : 18-25

Evaluation and comparison of shear bond strength and adhesive remnant index score in brackets bonded with probiotics impregnated orthodontic adhesive and commercially available orthodontic adhesive- An in vitro study

Azmina Idaayath M1 , Poornima.R.Jnaneshwar2 , R.Krishnaraj3 , K.Ravi 4

1Post Graduate, 2,3Professor, 4Professor and Head of Department, Department of Orthodontics and Dentofacial Orthopaedics, SRM Dental College.

Address for Correspondence:

Dr.Azmina Idaayath

‘Nazeer manzil’ no 46, 3 rd Cross Street Minor Trustpuram, Choolaimedu, Chennai 94 Phone number- 9940277336

Email- azminaidaayath16@gmail.com

Abstract:

Aim:

White spot lesions are one of the main drawbacks of fixed orthodontic mechanotherapy. Probiotic bacteria have been included in mouthwashes and lozenges to check the activity of S.mutans on surface enamel. Aim of the present study was to evaluate and compare shear bond strength and adhesive remnant index scores of orthodontic brackets bonded with probiotic impregnated (Lactobacillus rhamnous) orthodontic adhesive and conventional light cure orthodontic adhesive.

Materials and methods:

In this in-vitro study,two groups were tested in one group brackets were bonded to extracted maxillary premolars using probiotic impregnated composite and in the other with conventional light cure composite resin.Shear bond strength was assessed using universaltesting machine. Adhesive remnantindex scores were assessed on the same samples.

Results:

Shear bond strength of the new composite resin was significantly decreased when compared to conventional light cure composite(p=0.001). There was no significant difference in ARI scores (p=0.51) between the groups.

Conclusions:

The shear bond strength of the novel probiotic impregnated composite was significantly reduced. Though there was no significant variation in ARIscores when compared to control, avenues to improve the shear bond strength should be assessed.

Key words- Probiotic impregnated composite resin, white spot lesions, lactobacillus rhamnous GG, Streptococcus mutans.

SOURCE OF FUNDING:

Nil

CONFLICT OF INTEREST:

The authors have no conflicts of interest to declare.

How to cite this article:Idaayath, A., Jnaneshwar, P., R. Krishnaraj, & K.Ravi. (2023). Evaluation and comparison of shear bond strength and adhesive remnant index score in brackets bonded with probiotics impregnated orthodontic adhesive and commercially available orthodontic adhesive - An in vitro study: Original Research. International Journal of Orthodontic Rehabilitation, 14(1), 18–25. https://doi.org/10.56501/intjorthodrehabil.v14i1.696

Original Research

Year : 2022 | Volume : 13 | Issue : 3 | Page : 10-21

Evaluation and comparison of copper and zinc ion release from copper-oxide and zinc-oxide nanoparticles coated orthodontic brackets- An In vitro Study

Nausheen Mobeen1,Sangeetha Duraisamy 2,K.Ravi 3

1Post Graduate,2 Professor,3 Dean and HOD,SRM Dental College,Ramapuram, Chennai

Corresponding author:

Dr.NausheenMobeen,M.D.SPG,

Dept of Orthodontics and Dentofacial Orthopaedics, SRM Dental College, Ramapuram

Email-nausheenmobeen@gmail.com

Phone number-9952922347

Abstract

AIM :

To evaluate the release of zinc and copper ions from zinc oxide and copper oxide nanoparticles coated orthodontic brackets in artificial saliva under Invitro condition.

METHODOLOGY :

Thirty six metal brackets were coated with copper oxide (group A) and zinc oxide (group B ) nanoparticles using spray pyrolysis method  and bracket was randomly selected  and assessed under scanning electron microscope. The nano-coated brackets with copper oxide and zinc oxide nanoparticles (Group A and B) were bonded on the extracted first premolar tooth with standard protocol and immersed in artificial saliva at pH of 6.5.  The nanocoated brackets were analysed for ion release using atomic absorption spectrometer  at four different time intervals baseline, day 7, day 14, and day 21 under invitro condition.

RESULT:

The highest concentration of zinc ion released from the zinc oxide and copper oxide  nano coated brackets in the artificial saliva was on the 7th day and the quantity of zinc ion released was well below the levels that are toxic to humans throughout the study period.

CONCLUSION:  

The concentration of zinc ions released zinc oxide nano coated brackets was significantly greater than the concentration of copper ion released from the copper oxide nano-coated brackets in the artificial saliva under similar experimental conditions.

Keywords:

Zinc oxide nanoparticles, copper oxide nanoparticles, ion release, nanomaterials.

SOURCE OF FUNDING

None

CONFLICT OF INTEREST

There is no conflict of interest.

How to cite this Article: Mobeen, N., Duraisamy, S., & K, R. (2022). Evaluation of the Ion release from nanoparticles coated orthodontic brackets - In vitro Study: Original research. International Journal of Orthodontic Rehabilitation, 13(3), 10–21. https://doi.org/10.56501/intjorthodrehabil.v13i3.288