Comparison between fiber-reinforced polymers and stainless steel orthodontic retainers
Lucchese Alessandra, Manuelli Maurizio, Albertini Claudio Ciuffredab Paolo, Gherlone Enrico, Perillo Letizia,
소속 상세정보
( Lucchese Alessandra ) - Vita Salute San Raffaele University Department of Orthodontics
( Manuelli Maurizio ) - Vita Salute San Raffaele University Department of Orthodontics
( Albertini Claudio Ciuffredab Paolo ) - IRCCS San Raffaele Scientific Institute Research Area in Dentofacial Orthopedics and Orthodontics
( Gherlone Enrico ) - Vita Salute San Raffaele University Unit of Dentistry
( Perillo Letizia ) - Seconda Universita degli Studi di Napoli Department of Orthodontics
Abstract
Objective: The aim of this study was to examine the properties of fiber-reinforced composite and stainless steel twisted retainers for orthodontic retention.
Methods: Three different span lengths (5.0, 8.0, and 14.0 mm) of fiber-reinforced composite were investigated. The three fiber-reinforced composite retainer groups were subdivided according to the storage condition (dry and wet), resulting in a total of six groups. Each stainless steel and fiber-reinforced composite group was comprised of six specimens. The three-point bending flexural test was conducted using a universal testing machine. ANOVA was used to assess differences in the maximum load and maximum stress according to the span length, material, and storage condition. Post-hoc comparisons were performed if necessary.
Results: The maximum stress and maximum load were significantly (p < 0.001) associated with the span length, material, and storage condition. The significant interaction between the material and span length (p < 0.001) indicated the differential effects of the material for each span length on the maximum stress and maximum load, with the difference between materials being the highest for the maximum span length.
Conclusions: Our findings suggest that fiber-reinforced composite retainers may be an effective alternative for orthodontic retention in patients with esthetic concerns or allergy to conventional stainless steel wires.
키워드
Orthodontic materials; Orthodontic retainers; Fiber-reinforced composite
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