Bond strength of different bracket bonding materials to the enamel subjected to thermal cycling

Rosolen, Alcir; Bridi, Enrico Coser; Basting, Roberta Tarkany

doi:10.1590/1981-863720150001000042957

Cited by 1 publication

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although previous studies have not evaluated the influence of cumulative intraoral stresses on brackets’ debonding values and ARIs, the effects of both thermocycling and cyclic fatigue loading had been separately tested in previous in-vitro studies, but often yielded contradicting findings. Ribeiro-Neto et al 19 and Rosolen et al 20 found no effect of thermocycling on bracket bonding strengths, and found that enamel damage was likely to occur during debonding when etch-and-rinse primer was utilized to bond composite adhesives to enamel. Elekdag-Turk et al 21 recorded no effect of thermocycling on bonding strengths after using etch-and rinse primers, although they found a significant reduction in bracket bonding strength to enamel when self-etch primer was used.…”

Section: Discussionmentioning

confidence: 99%

Debonding characteristics of orthodontic brackets subjected to intraoral stresses under different adhesive regimes: An in-vitro study

Abdelaziz

Alshahrani

Kamran

et al. 2020

Journal of Applied Biomaterials & Functional Materials

View full text Add to dashboard Cite

Aim: To evaluate the effect of simulated intraoral hydraulic, thermal, and mechanical stresses on the debonding characteristics of orthodontic brackets under different adhesive regimes. Materials and methods: Groups of pre-coated (G1) and non-coated (G2) orthodontic metal brackets were bonded onto the buccal surfaces of 96 premolars using etch-and-rinse (SG1, n = 24) and self-etch (SG2, n = 24) primers. Twelve specimens (C1) from each subgroup were subjected to early debonding resistance tests, while the other twelve (C2) were used to test delayed debonding resistance after exposure to conditions simulating intraoral hydraulic, thermal, and mechanical stresses. The debonding resistance of the brackets was evaluated using a universal testing machine and the debonding patterns were micro-visualized to determine the adhesive remnant indexes of subgroups of specimens. Results: Within each group, the etch-and-rinse primer (SG1) resulted in higher debonding resistance than self-etch primers (SG2) ( p < 0.05), while there was no difference between non-stressed and stressed specimens ( p > 0.05). Within each category of test specimens, there was no difference between pre-coated (G1) and non-coated (G2) brackets ( p > 0.05). The tested specimens in all categories showed comparable adhesive remnant indexes. However, higher percentages of favorable scores (0 and 1) were obtained for all stressed specimens. Conclusions: Short-term cumulative intraoral stresses have no adverse effect on the debonding values of either pre-coated or non-coated brackets when either etch-and-rinse or self-etch primer is used for bonding. Exposure of the bonded brackets to different types of stress reflects favorable debonding patterns.

show abstract

Section: Discussionmentioning

confidence: 99%