Al-Emran Sulaiman, Barakati Rakan
Department of Preventive Dental Sciences, Collage of Dentistry, King Saud University, Riyadh, Saudi Arabia.
J Contemp Dent Pract. 2007 Nov 1;8(7):108-13.
The objective of this article is to present a simple technique for stabilizing a lingual fixed retainer wire in place with good adaptation to the teeth surfaces and checking for occlusal interferences prior to the bonding procedure.
Bonding of an upper or lower fixed lingual retainer using stainless steel wires of different sizes and shapes is a common orthodontic procedure. The retainer can be constructed in a dental laboratory, made at chair side, or it can be purchased in prefabricated form. All three ways of creating a fixed retainer are acceptable. However, the method of holding the retainer wire in place adjacent to the lingual surfaces of the teeth before proceeding with the bonding process remains a problem for some practitioners.
The lingual fixed retainer was fabricated using three pieces of .010" steel ligature wire which were twisted into a single strand wire. Another four to five 0.010" pieces of steel ligature wires were twisted in the same way to serve as an anchor wire from the labial side of the teeth. The retainer wire was bonded using the foible composite.
The technique presented here for stabilizing the retainer wire prior to bonding provides good stabilization, adaptation, and proper positioning of the retainer wire while eliminating contamination of etched surfaces which might arise during wire positioning before bonding. This technique also allows the clinician the opportunity to check the occlusion and adjust the retainer wire to avoid occlusal interference prior to bonding maxillary retainers. This same clinical strategy can be used to stabilize wires for splinting periodontally affected teeth and traumatized teeth.
本文的目的是介绍一种简单的技术,用于将舌侧固定保持丝稳定就位,使其能很好地贴合牙齿表面,并在粘结操作前检查有无咬合干扰。
使用不同尺寸和形状的不锈钢丝粘结上、下颌舌侧固定保持器是一种常见的正畸操作。保持器可以在牙科实验室制作,也可以在椅旁制作,或者购买预制的。这三种制作固定保持器的方法都是可行的。然而,对于一些从业者来说,在进行粘结过程之前,将保持丝固定在牙齿舌侧表面附近的方法仍然是个问题。
舌侧固定保持器由三根0.010英寸的结扎钢丝拧成一股制成。另外四到五根0.010英寸的结扎钢丝以同样的方式拧成一股,用作从牙齿唇侧的锚定丝。保持丝使用流动复合树脂粘结。
本文介绍的在粘结前稳定保持丝的技术能提供良好的稳定性、贴合度和保持丝的正确定位,同时消除粘结前在定位丝过程中可能出现的蚀刻表面污染。该技术还使临床医生有机会在粘结上颌保持器之前检查咬合情况并调整保持丝以避免咬合干扰。同样的临床策略可用于稳定用于固定牙周病损牙齿和外伤牙齿的钢丝。