The association between patient’s compliance and age with the bonding failure of orthodontic brackets: a cross-sectional study

Abstract

BackgroundAn efficient orthodontic treatment must aim the best occlusal result in the shortest possible time. One of the factors that can interfere in this goal is the bracket debonding during the treatment. This study aimed at assessing the different factors related to brackets failure, highlighting age and patient cooperation with treatment.MethodsThe sample comprised 199 orthodontic patients of both genders (103 women and 96 men); divided into two groups—adolescents (12 to 18 years old, 118 patients) and adults (19 to 59 years old, 81 patients). A questionnaire was applied regarding the motivation of patients to seek treatment and whether they had received information on appliance care; patients also filled out their level of cooperation with treatment in a visual analog scale (VAS). Additionally, other variables were assessed, such as the teeth with bracket debonding, the presence of deep overbite, and the use of bite plate. The Mann-Whitney test was used, and a 5% significance level was applied for analyses.ResultsIt was observed that 20.1% of patients presented at least one tooth with bracket failure, and the lower arch was the most prevalent site (47.5%). Adolescents presented more debonding (25.4%) than adults (12.3%). Individuals with better VAS scores on cooperation sought treatment on their own (p = 0.042), were adults (p ≤ 0.001), and showed lower rate of failure of brackets (p ≤ 0.001). The factors related to malocclusion and treatment performed had no statistical significance.ConclusionGreater cooperation was expected from adult individuals who sought treatment on their own and presented low rate of bracket failure.

Comparison of shear bond strength of brackets bonded with four different bonding protocols at different time intervals; An in vitro study

“…The bond strength of orthodontic brackets is satisfactory clinically when it lies between 5.9 and 7.8 MPa. (4) However, to avoid enamel fractures or chipping during debonding procedures, the bond strength should not exceed the enamel tensile strength (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25). (21) Clinically, brackets are subjected to forces as early as 10-15 minutes after finishing the bonding procedures, when archwires are inserted and tied into the brackets.…”

“…Following thermocycling, Vertise flow with and without etching manifested a significant decrease in SBS with different pattern of residual remnant. (13) Since bonding efficacy (13,14) , mechanical properties after aging (15) and type of failures after debonding (16) are critical factors for orthodontists when selecting an orthodontic adhesive, the aim of this study was to evaluate the shear bond strengths (SBSs) and adhesive remnant index (ARI) of selfadhesive resin material (Heliosit) and self-etch &self-adhesive composite (Vertise flow) and compare them to a traditional orthodontic adhesive (Transbond XT).…”

Shear bond strength of a flash-free orthodontic adhesive system after thermal aging procedure

“…Since bonding efficacy (2,12), mechanical properties after aging (13) and type of failures after debonding (2) are crucial factors for orthodontists when selecting an orthodontic adhesive, the following study aimed to: (a) compare the SBS of the enamel-bracket interface between APC FF and a widely used conventional adhesive such as Transbond PLUS Color Change Adhesive (3M Unitek) (TP); (b) determine the influence of thermocycling on both adhesives; and (c) evaluate the amount of adhesive remnant on the tooth surface after bracket removal.…”

Space Regaining Made Easy: The Case of a Severely Infraoccluded Primary Molar

“…The lack of compliance can derive in a suboptimal treatment result or treatment failure. The age is also strongly related to compliance, and the younger the patient, the lesser the adherence is to the treatment prescriptions and the appliance wear time [11]. Moreover, fixed and removable appliances can cause a change in the oral microbiota and biofilm that can be related to an increased risk of caries [12].…”