Adhesion of Streptococcus mutans to ligature and self-ligating brackets: laboratory study
https://doi.org/10.33667/2078-5631-2026-1-61-64
Abstract
Introduction: although self-ligating braces are supposed to provide better hygiene conditions, there is still no consensus. The purpose of this study was to evaluate the adhesion of Streptococcus mutans (SM) to self-ligating and ligature braces from various manufacturers and types of ligatures. Methods: two commercial brands of metal braces for upper premolars («Damon 3» Ormco® and «In-Ovation» GAC®) were tested. Each of them was divided into three groups, which differed by the type of ligature (steel and elastomeric) and the model of the bracket (metal, self-ligating), for a total of six groups of six braces each. The pre-sterilized braces were immersed in saliva for one hour, then washed and added to a bacterial suspension kept under aerobic conditions for 72 hours (3 days). The adhering bacteria were then separated and counted by the number of colonies (CFU/mL) after 48 hours of growth. The groups were compared using the Kruskal – Wallis criteria (p <0.05). Results: regardless of the manufacturer’s brand, self-ligating braces showed significantly fewer colonies of microorganisms Cfu/ml. Among the compared models of self-ligating «In-Ovation» braces, GAC® showed the highest level of bacterial adhesion. Conclusions: self-ligating braces are likely to exhibit lower levels of biofilm adhesion compared to ligature braces. This is especially true for «Damon 3» Ormco® braces, which are less prone to biofilm accumulation, which is important to know for practicing orthodontics.
About the Authors
T. F. Kosyreva
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Tamara F. Kosyreva – DMD, PhD, DSc, Professor, Department of the Pediatric Dentistry and Orthodontics, Medical Institute
Moscow
M. A. Al-okbi
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Mustafa A. Al-Okbi – DMD, PhD student, Department of the Pediatric Dentistry and Orthodontics, Medical Institute
Moscow
I. Katbeh
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Imad Katbeh, DMD – PhD, Associate Professor, Department of the Pediatric Dentistry and Orthodontics, Medical Institute
Moscow
E. Gergos
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Eyad Gergos – Assistant, Department of Peadiatric Dentistry and Orthodontics, Medical Institute
Moscow
A. Saleh
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Ahmad Saleh – PhD student in orthodontics, Department of the orthodontics and paediatric dentistry, Medical Institute
Moscow
O. V. Virginskaia
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation
Russian Federation
Olga Vyacheslavovna Virginskaya – PhD, Senior Lecturer Department of Peadiatric Dentistry and Orthodontics, Medical Institute
Moscow
G. Saleh
Peoples’ Friendship University of Russia named after Patrice Lumumba; Al Andalus University for Medical Sciences
Syrian Arab Republic
Syrian Arab Republic
Ghaith Saleh – Student of Dentistry
Moscow
Qadmus, Tartus
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Review
For citations:
Kosyreva T.F., Al-okbi M.A., Katbeh I., Gergos E., Saleh A., Virginskaia O.V., Saleh G. Adhesion of Streptococcus mutans to ligature and self-ligating brackets: laboratory study. Medical alphabet. 2026;(1):61-64. (In Russ.) https://doi.org/10.33667/2078-5631-2026-1-61-64
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