The Effect of Oral Hygiene Status on the Bond Failure Rate of the Orthodontic Bracket


Background Bracket bond failure is one of the major clinical dilemmas in orthodontic specialty that directly affect the success of the orthodontic treatment. Objectives The objectives of the present study were to assess the effect of oral hygiene status of the patients wearing fixed orthodontic appliances on the bond failure rate of thebracket. Materials and Methods Twenty-four patients (14 females, 10 males) with age range (14-25 years) were participants and fixed orthodontic appliances were placed for them. Oral hygiene status was assessed using Orthodontic Plaque Index (OPI) with a score from zero to four. The OPI was evaluated in each patient at follow up visit three-week apart during a six-month observation period. Each bond failure (other than due to trauma) was documented on a data collection sheet remarking the date and tooth type. The effect of OPI scores on the bond failure rate was evaluated. Any relation between the age of the patient, gender, dental arches, sides and tooth type with the deboning behavior was evaluated and the data were analyzed statistically. Results The highest percentage of bond failure rate was apparent with oral hygiene scores three and four. The male and younger patients showed a higher percentage of bond failure. The maxillary arch exhibited a higher percentage of bond failure. Regarding tooth type, both maxillary right lateral incisors and canines had higher percentage of bond failure. Conclusion Maintaining good oral hygiene during the course of orthodontic treatment has a crucial role in the success of bond strength. Bond failure rate varies according to age, gender, dental arch, and tooth type.