Vol. 11, Issue 1, Part B (2025)

Objective: To evaluate the effects of a fluoride releasing orthodontic bonding material on the colonisation of SM and LB in saliva, on plaque index and gingival index. The null hypothesis assumed that fluoride releasing orthodontic bonding material have no effect on these parameters.
Design and Methods: Randomised, prospective, controlled trial. The 45 patients were randomly divided into 3 equal groups according to bonding material type - Group 1: TransbondTM Plus SEP and TransbondTM Plus colour change adhesive (fluoride releasing bonding material, compomer); Group 2: TransbondTM XT primer and Transbond XT adhesive (conventional composite); and Group 3: untreated control group (no brackets were bonded, negative control group).
Results: SM level showed a significant increase in the Transbond XT group only. LB level showed a significant increase in the Transbond Plus, Transbond XT groups (p<0.05). There was no statistical differences in LB level between the groups at T₀, T₁ and T₂. PI and GI scores showed a significant increase in all groups, except the negative control (p<0.05). There were no statistical differences in PI and GI scores between the groups, except the negative control.
Limitations: The study only covers the period of one month. Blinding of the clinician was also lost. 
Conclusion: Fluoride releasing orthodontic bonding material could prevent SM increase, but had no effect on LB increase, plaque index and gingival index.