Comparative evaluation of failure of three different aged orthodontic bonded retainers related to vertical load: in vitro study

ElSorogy, Mayada; Hanafy, Seham; Yousry, Tarek; Zaher, Abbas

doi:10.21608/eos.2019.77636

Cited by 5 publications

(26 citation statements)

References 19 publications

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“…e ARI scores were also assessed in the present study, which are important in determining the location of debonding. e results showed no significant difference in the frequency of ARI scores between the groups, which was in line with the results of Scribante et al [26], El-Sorogy et al [2], Cook et al [1], and Kotta et al [10] but different from the results of Foek et al [7]. In the latter study, the mode of failure was the same for all specimens.…”

Section: Discussionsupporting

confidence: 87%

“…International Journal of Dentistry 125,000 load cycles applied to the incisal edge of the incisor tooth positioned in the middle to simulate the masticatory forces applied to the teeth during a 6-month period in the clinical setting (Figure 3) [2]. Any fracture in the aging process was recorded.…”

Section: Agingmentioning

confidence: 99%

“…e ARI scores were then determined by quantifying the amount of adhesive remaining on the enamel surface of each tooth where the debonding occurred according to Artun and Bergland [11]. For this purpose, the teeth were inspected under a stereomicroscope (Leica 245E, USA) at x20 magnification [1,2]. e ARI scores were determined as follows [12]:…”

Section: Adhesive Remnant Indexmentioning

confidence: 99%

“…Retention is mandatory following orthodontic treatment to prevent relapse. Relapse is an unpredictable phenomenon which is variable in different individuals [ 2 ]. Several factors are involved in the occurrence of relapse following completion of orthodontic treatment such as the abnormal function of the muscles, occlusal stresses, and regeneration of periodontal fibers [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…Different types of wires have been used for assessment of the bond strength of retainers such as flat-braided wire (Bond-A-Braid®, Reliance Orthodontic Products), three-strand wire (Ortho Technology) [ 1 ], five-strand wire (PentaOne, Masel), dead-soft eight-braided wire (Bond-A-Braid, Reliance), dead-soft coaxial wire (Respond, Ormco) [ 4 ], fiber-reinforced composite (InFibra Ribbon, Italy) [ 2 ], polyethylene ribbon reinforced, and braided stainless steel wire [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

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Shear Bond Strength of Four Types of Orthodontic Retainers after Thermocycling and Cyclic Loading

Golshah

Simkooei

2021

International Journal of Dentistry

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Objectives. This study assessed the shear bond strength (SBS) of four types of orthodontic retainers after thermocycling and cyclic loading. Materials and Methods. This in vitro, experimental study evaluated 120 extracted mandibular central and lateral incisors. The teeth were mounted in acrylic resin blocks in sets of three, such that the interdental contacts and positioning of the teeth resembled the dental arch. The acrylic blocks were divided into four groups (n = 10) for the use of 0.016 × 0.022-inch Bond-A-Braid® wire, 0.0195-inch twisted wire, 0.0175-inch coaxial wire, and 0.038 × 0.016-inch Ortho-Flex Tech® wire, as retainers. The retainers were bonded to the lingual surface of the teeth with Transbond XT adhesive in all groups, and the specimens underwent thermocycling and cyclic loading (125,000 load cycles applied to the incisal edge of the incisor tooth in the middle, simulating 6 months of clinical service). Any fracture in the process of aging was recorded. The teeth were then subjected to vertical loads applied along their occlusoapical axis in a universal testing machine to determine the SBS in Newtons. The adhesive remnant index (ARI) scores were also determined. Data were analyzed using ANOVA, the Monte Carlo chi-square test, and the Kruskal–Wallis test. Results. Thermocycling and cyclic loading did not cause degradation or fracture of the retainers. The SBS and ARI scores of the four groups were not significantly different ( P > 0.05 ). Conclusion. The SBS of retainers with flat rectangular-shaped cross-section was similar to that of retainers with a round cross-section; thus, they have no superiority over each other in this respect.

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Section: Discussionsupporting

confidence: 87%

Section: Agingmentioning

confidence: 99%

Section: Adhesive Remnant Indexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shear Bond Strength of Four Types of Orthodontic Retainers after Thermocycling and Cyclic Loading

Golshah

Simkooei

2021

International Journal of Dentistry

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A comparative study of CAD/CAM fabricated polyether ether ketone and fiber-glass reinforcement composites versus metal lingual retainers under vertical load (an in vitro study)

Alabbadi,

Abdalla,

Hanafy

et al. 2023

BMC Oral Health

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Background Retainer is a necessary procedure when orthodontic treatment complete to avoid relapse due to periodontal fiber elasticity and to allow for alveolar bone regeneration. Compare the influence of vertical force on the failure of three fixed retainers: CAD/CAM polyether ether ketone (PEEK), CAD/CAM fiber glass reinforced composites (FRCs), and lingual retainer wire “Bond-A-Braid™”. Materials and methods One hundred and eight maxillary first premolars teeth were randomly allocated to three groups: Group A (CAD/CAM PEEK), Group B (CAD/CAM FRC), and Group C (lingual retainer wire " Bond-A-Braid™”). These retainers were bonded using Assure Plus Bonding Resin and GO TO Paste. For each specimen, a loading cycling and thermocycling machine was used. The failure debonding forces were measured on the interproximal segments using a universal testing machine with a cross-head speed of 1 mm/min. The adhesive remnant index (ARI) was calculated after identifying types of failure with a stereomicroscope at (X 20) magnification. Results Group B and group C showed the highest failure bonding forces, with a mean of 209.67 ± 16.15 and 86.81 ± 4.59 N, respectively. However, Group A had a statistically significant lower bond failure force, with a mean value of 45.73 ± 4.48 N. At baseline, there was a statistically significant difference in connector retainer displacement between the three studied groups (p < .001). The ARI score was not statistically significant (p < .001) between the three study groups; for groups A and B, the ARI was predominantly score 3, and group C showed a mixed score of 2 and 3. The failure mode of retainers was investigated using an optical stereomicroscope. In group B, there was a cohesive breakdown in the retainer, and groups A and C exhibited failures primarily in the adhesive at the retainer interface. Conclusion All groups differed significantly, with group A having the lowest debonding force and group B having the highest. Furthermore, there was not a substantial variation in ARI, but there was a significant difference in connector retainer displacement and the types of failure amongst the three groups.

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Mechanical properties of combined packable and high-filled flowable composite used for the fixed retainer: an in vitro study

Alamdarloo,

Mosaddad,

Golfeshan

2024

BMC Oral Health

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Background Clinicians often utilize both flowable and packable composites concurrently in bonding fixed retainers. Thus, this study aimed to assess the synergistic effect of these composites in the bonding process. Methods This in vitro study divided specimens into three groups: flowable composite (nano-hybrid, Tetric N-Flow, Ivoclar Vivadent), packable composite (nano-hybrid, Tetric N-ceram, Ivoclar Vivadent), and combined use of flowable and packable composite. Shear bond strength (SBS), adhesive remnant index (ARI), and wire pull-out resistance were compared among the groups. Statistical analyses were conducted using ANOVA and Tukey tests to compare study groups. Additionally, Chi-square and Kruskal-Wallis tests were employed to analyze the ARI index among the groups. Results ANOVA results indicated no statistically significant differences among test groups (P = 0.129) regarding SBS. However, a significant difference existed between flowable and packable composite groups (P = 0.01) regarding ARI scores. Among the study groups, flowable composite exhibited the highest frequencies of ARI scores of 1 and 2, whereas packable composite showed the highest frequency of ARI scores of 0. The combined group had higher frequencies of ARI scores of 0 and 1 compared to the flowable composite. The wire pull-out test revealed that the combined application of flowable and packable composite resulted in significantly lower detachments compared to the packable composite alone (P = 0.008). However, no significant differences were observed in the comparisons between the flowable-packable (P = 0.522) and combined-flowable (P = 0.128) groups. Conclusion The combined use of flowable and packable composites for fixed retainers demonstrated adequate shear bond strength and ideal ARI scores, suggesting it as a suitable adhesive system for bonding orthodontic fixed retainers.

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Comparative evaluation of failure of three different aged orthodontic bonded retainers related to vertical load: in vitro study

Cited by 5 publications

References 19 publications

Shear Bond Strength of Four Types of Orthodontic Retainers after Thermocycling and Cyclic Loading

Shear Bond Strength of Four Types of Orthodontic Retainers after Thermocycling and Cyclic Loading

A comparative study of CAD/CAM fabricated polyether ether ketone and fiber-glass reinforcement composites versus metal lingual retainers under vertical load (an in vitro study)

Mechanical properties of combined packable and high-filled flowable composite used for the fixed retainer: an in vitro study

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