Chitosan's effects on the acidity, copper ion release, deflection, and surface roughness of copper-nickel-titanium archwire

• Main Authors: Ika Devi (Author), Erliera Sufarnap (Author), Finna (Author), Eric Rionaldi P Pane (Author)
• Format: Book
• Published: Universitas Airlangga, 2023-03-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 1978-3728; 2442-9740; 10.20473/j.djmkg.v56.i1.p41-47
• Keywords: cuniti; chitosan; copper ion release; deflection; surface roughness; Dentistry; RK1-715
• Source: Dental Journal, Vol 56, Iss 1, Pp 41-47 (2023)

Background: Chitosan has an antimicrobial effect in oral hygiene control. Orthodontists sometimes prescribe mouthwash to adolescent patients. Copper-nickel-titanium (CuNiTi) orthodontic archwire is widely used in orthodontic treatment. Chitosan's effects on the CuNiTi properties of orthodontic archwire are not generally known. Purpose: This study aimed to measure the acidity, copper ion release, deflection, and surface roughness of CuNiTi orthodontic archwire immersed in artificial saliva and 2% chitosan. Methods: This study comprised experimental laboratory research. Forty-two CuNiTi orthodontic archwires were divided into three groups. Group A consisted of 18 archwires immersed in artificial saliva, Group B consisted of 18 archwires immersed in 2% chitosan, and Group C was six archwires for the baseline sample. The two intervention groups (A and B) were divided into three subgroups of six samples and were subjected to different immersion times-i.e., two, four, and six weeks. Acidity, copper ion release, deflection, and surface roughness were measured using pH meters, atomic absorption spectrophotometry (AAS), a universal testing machine (UTM), and a scanning electron microscope (SEM). Results: The results showed that Group A was more alkaline than Group B, and it was significantly different only in Week 2. Group B's copper ion release was significantly lower than Group A for all the time observations (p<0.05), and the deflection analysis showed no significant difference in any of the groups (p>0.05). Furthermore, the SEM images showed CuNiTi in Group A at Week-6 had the most porosities and defects. Conclusion: The chitosan produces buffer effects on the pH; it also exhibits lower copper ion release, no differences in unloading forces, and subjectively has better surface roughness.