Light-curing adhesives have less cytotoxic and hormonal effects compared to chemically polymerized adhesives
Light-curing adhesives have less cytotoxicity and hormonal effects compared to chemically polymerized adhesives suggests a new study published in the Journal Angel orthodontist.
Researchers have found in a new study that among patients in whom indirect bonding adhesives were used, Light-curing adhesives released a significantly less amount of monomer than chemically cured adhesives. Therefore Light-curing adhesives are safer than chemically polymerized adhesives and have less potential for cytotoxicity and hormonal effects.
A study was done to quantify the amount of residual monomer released from orthodontic adhesives used in the indirect bonding technique and compare it to a direct bonding composite resin.
Five hundred stainless steel orthodontic brackets were bonded on bovine incisors using five groups of bonding resins: Transbond XT (TXT), Transbond Supreme LV (SLV), Sondhi Rapid-Set (SRS), Transbond IDB (IDB), and Custom I.Q. (CIQ). Liquid samples were gathered on the first, seventh, 21st, and 35th days. Residual monomer release was measured from the liquid samples with a liquid chromatography device. In addition, the amount and shape of the adhesive between the tooth surface and the bracket base was evaluated using obtained electron microscopy images. The data were analyzed using analysis of variance, and a Tukey post-hoc test was applied.
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