The effects of different cavity disinfectants on fracture resistance of tooth fragment reattachments.

IF 0.9 Q3 DENTISTRY, ORAL SURGERY & MEDICINE European Oral Research Pub Date : 2023-01-09 DOI:10.26650/eor.2023996311

Nihan Gonulol, Emine Sen Tunc, Elif Kalyoncuoglu, Sukru Ozcelik, Hakan Gokturk

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Abstract

Purpose: This study was conducted to investigate the fracture strength of reattached tooth fragments after different cavity disinfection protocols.

Materials and methods: Incisal edges of 144 bovine incisors were sectioned and then randomly divided into 4 different groups as follows: Group C: no disinfectant; Group NaOCl: 2.5% sodium hypochlorite solution; Group NaOCl+Asc: 2.5% sodium hypochlorite followed by 10% ascorbic acid solution; Group CHX: 2% chlorhexidine solution. Teeth were further divided into 3 subgroups according to universal adhesive (G-Premio Bond, Scotchbond Universal, Prime and Bond Universal). Fracture resistance was evaluated using a universal testing machine. Data was analyzed using 2-way ANOVA with Bonferroni tests.

Results: Cavity disinfectant had a statistically significant effect on bond strength (p<0.05), with the highest bond strength detected in the NaOCl+Asc Group (148.22 ± 51.64) and the lowest in the NaOCl Group (112.84 ± 43.12). Scotchbond Universal exhibited the highest bond strength values (163.59 ± 49.94); however, there were no significant differences between the other adhesive systems (p> 0.05).

Conclusion: Application of ascorbic acid following sodium hypochlorite treatment can improve dentin bond strength.

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不同口腔消毒剂对牙片再植体抗折性的影响。

目的:研究不同口腔消毒方案后牙片再附着的断裂强度。材料与方法:将144只牛切牙切缘切片，随机分为4组:C组:不加消毒剂;NaOCl组:2.5%次氯酸钠溶液;NaOCl+Asc组:2.5%次氯酸钠加10%抗坏血酸溶液;CHX组:2%氯己定溶液。根据通用粘合剂将牙齿分为3个亚组(G-Premio Bond、Scotchbond universal、Prime和Bond universal)。使用万能试验机评估断裂抗力。数据分析采用Bonferroni检验的双因素方差分析。结果:口腔消毒液对结合力的影响有统计学意义(p < 0.05)。结论:次氯酸钠治疗后应用抗坏血酸可提高牙本质结合强度。

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