Universidade do Estado do Rio de Janeiro, Faculdade de Odontologia, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).
Private practice (Rio de Janeiro/RJ, Brazil).
Dental Press J Orthod. 2021 Oct 25;26(5):e2119353. doi: 10.1590/2177-6709.26.5.e2119353.oar. eCollection 2021.
The most currently recommended method for sterilization of orthodontic pliers is the autoclave, while peracetic acid has also been shown to be effective in the chemical sterilization process.
This study sought to compare the corrosive effects of peracetic acid and autoclave sterilization process of orthodontic pliers.
Four active tungsten carbide (WC) stainless steel tie-cutting pliers from the manufacturers Quinelato (Rio Claro, SP, Brazil) and ICE (Cajamar, SP, Brazil) were selected. The active ends of the pliers were sectioned, and six active tips were obtained and distributed into the following groups: 1) control group (no sterilization); 2) AC group (two active pliers tips submitted to 100 autoclave sterilization cycles); and 3) AP group (two active pliers tips submitted to 100 cycles of sterilization by immersion in 2% peracetic acid solution for 30 minutes).
Chemical analysis using X-ray dispersive energy spectroscopy showed that after autoclave sterilization, only the ICE pliers presented oxidation corrosion (Δ[O] = +24.5%; Δ[Fe] = +5.8%; Δ[WC] = -1.9%). In comparison, following peracetic acid sterilization, both manufacturers ICE (Δ[O] = +1.8%; Δ[Fe] = +18.0%; Δ[WC] = -1.1%) and Quinelato (Δ[O] = +5.3%; Δ[Fe] = -10.4%; Δ[WC] = -15.2%) showed corrosion. The morphological analysis revealed that peracetic acid caused a pitting and localized corrosion in both brands, while the autoclave caused uniform surface corrosion on the ICE pliers.
Autoclave application was the sterilization method that generated less corrosive damage to the orthodontic cutting pliers, when compared to the immersion in 2% peracetic acid.
目前最推荐的正畸钳灭菌方法是高压蒸汽灭菌，而过氧乙酸也已被证明在化学灭菌过程中有效。
本研究旨在比较过氧乙酸和高压蒸汽灭菌过程对正畸钳腐蚀性的影响。
从 Quinelato（巴西里卡 SP）和 ICE（巴西卡贾马 SP）制造商处选择 4 个活性碳化钨（WC）不锈钢结扎剪。钳的活动端被切开，获得 6 个活动尖端，并分为以下组：1）对照组（未消毒）；2）AC 组（2 个活动钳尖经 100 次高压蒸汽灭菌循环）；和 3）AP 组（2 个活动钳尖经 100 次浸入 2%过氧乙酸溶液中 30 分钟的消毒循环）。
使用 X 射线能谱分析化学分析表明，高压蒸汽灭菌后，只有 ICE 钳出现氧化腐蚀（Δ[O] = +24.5%；Δ[Fe] = +5.8%；Δ[WC] = -1.9%）。相比之下，过氧乙酸消毒后，两个制造商 ICE（Δ[O] = +1.8%；Δ[Fe] = +18.0%；Δ[WC] = -1.1%）和 Quinelato（Δ[O] = +5.3%；Δ[Fe] = -10.4%；Δ[WC] = -15.2%）都出现了腐蚀。形态分析表明，过氧乙酸导致两个品牌的点蚀和局部腐蚀，而高压蒸汽仅在 ICE 钳上造成均匀的表面腐蚀。
与浸入 2%过氧乙酸相比，高压蒸汽应用是对正畸切割钳腐蚀性较小的消毒方法。
