38. Effect of Chlorhexidine Rinsed Blood Contamination on Bond Strength of Brackets Bonded with Self-etch Primer- An in Vitro Study.
Mymensingh Med J
; 32(2): 550-555, 2023 Apr.
Article
en En
| MEDLINE
| ID: mdl-37002770
ABSTRACT
The present invitro type of study has done to check the effect of blood contamination & chlorhexidine combination on the bond strength of brackets bonded with self-etch primer technique. The study consisted of ninety sound human upper premolars (extracted for orthodontic purpose) fixed in a self-cure acrylic block and segregated into three groups of 30 samples each. 0.022 slot metal MBT brackets (Gemini series-3M unitek) were bonded with self-etch primer using Transbond XT composite, CA, USA and light cure for 40 seconds) on clean buccal surface. Teeth were divided into 3 groups-Group A/Control group, Group B, Group C. A computer was used to record the force applied to debond the bonded bracket in the unit of Newton. The analysis of variance indicated that there were significant differences (F value = 6.891, p value=0.002) in bond strengths between the various groups tested. The highest value of shear bond strength occurred when chlorhexidine (Group C) was used to remove the blood contamination (mean=15.874 MPa). When bonding was done in ideal condition (Group A), shear bond strength obtained was slightly lower (mean=14.497 MPa) as compared to Group C. On the other hand, lowest shear bond strength among all three groups occurred when blood contamination (Group B) was removed with water (mean=11.059 MPa). Analysis of the study showed that shear bond strength of orthodontic brackets to enamel significantly decreased during bonding with self-etch primer in blood contamination condition. Self-etch primer displayed considerably superior performance with the use of chlorhexidine instead of water to wash the blood contamination.
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Base de datos:
MEDLINE
Asunto principal:
Clorhexidina
/
Soportes Ortodóncicos
Límite:
Humans
Idioma:
En
Revista:
Mymensingh Med J
Asunto de la revista:
MEDICINA
Año:
2023
Tipo del documento:
Article